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Home My WebLink AboutCC 1981-02-02 Agendas WORKSESSION 2/2/81 City of JKórth Richland HiUs,Texas - i i\ """':--/ ¡ '\.: .;,! -"~}~+~l ~- January 29, 1981 PUB LIe NOT ICE ------ ------ The City Council of the City of North Richland Hills, Texas, will have a Work Session, ~nday, February 2,1981, 7:30 p.m., in the Ci~ Hall of North Richland Hills, 7301 Northeast Loop 820. ITEMS FOR CONSIDERATION ARE AS FOLLOWS: 1. Discussion on perma steel multi-family apartment units 2. Discussion on water and sewer revenue bond fund project 3. Discussion on revisions to the rules, regulations, po 1 i c i es and procedures for water and sewer system . 4. Discussion on adopting uniform plumbing code 5. Discussion on updating current electric code 6. Discussion on amending building code 7. Legal litigation* JL J-~~ / Dï ck\ Faram, t1ayor ¡?þL/ *Closed due to subject matter POSTED: / ~ ./Â û/ - ~ /" - ó/ Date /;/1 -- ~, v .::> Time 17/ ~.~' (t:¿~L/~ /Ií~ --~.-.. . -r----. (/tí ty Secretary . (817) 281-0041 I 7301 N.E. LOOP 820 ,I P. O. BOX 13305 / NORTH RICHLAND HiLLS, TEXAS 75118 e City of JK8rth Rich1and Hills, Texas ~I il--:1. ' ~! ~// ~1F:=- ~ w A 1(., R... (JJ.e ¡J S Water well permits will be issued by the Permit Department upon approval and payment of fee. The well can not exceed 200 feet. e e P4re / / (817) 281-0041 I 4101 MORGAN CIRCLE / P. O. ROX 13305 / FORT WORTH, TEXAS 76118 r . L. ESTIA~TES OF WATER LOSS. e The Director of Utilities shall maintain currently by months an accou..'I1ting of estimated total water produced by wells and by purchases &8 well as the total water sales, and shall estim2.te the distributj.ons of the . difference to fire usage, leakage, unaccounted losses arld other cause· of loss if knO\\'11. ItT. k~INTEN~~CE OF DETOURS. Installation of water and sewer mains shall be done so as to provide 2nd maintain detours and keep open facilities for public travel. Ii. FINAL CLE.Al~Ir;G '(JP OF RIG·HT-O~'-\VAY. e Upon completion of the installe.tion of water and sewer mains, the Contractor shall clean and remove from the right-of-way all falsework, all surplus and discarded materials, rubbish, and temporary structures, restore in an acceptable manner all property, both public and private; which has been d2~aged because of the work, and shall leave the streets ~ld right-of-way unobstructed and in a neat and finished condition throughout the en- tire length of the project. No rubbish or discarded materials shall be dumped in the City without the express written permission oÎ the Director of Public Works. o. BARRICADES, WARNING AND DETOUR SIG~S. Any person installing water and sewer mains shall pro- vide erect and maintain all necessary barricades, suitu.ble and sufficient red lights, danger signals and signs, provide a sufficient number of watchmen and take all necessary precautions for the protection of the work and the safety of the public. All lights shall be kept burning from sunset to sunrise. P. SALE OF WATER OUTSIDE CITY LIMITS. No water will be sold to any individual that is not with- in the legal city limits oÎ North Richland Hills or the city of Watauga as no~ served, without prior approval of the city council of the city of North Richland Hills. Q. WATER WELLS. J ¡> t No water \lvell permi ts will be issued until approved by i city council. W Page 11 ~~~... '..." ~';'Iric: ~~- ',- .... ~~"'~I" ··R·S'TEf!..~~L-;J, '''' ,'<lflc. . .': ", . t ". \' ;:'t . I" ,:1 ~,. ~ : '" ,: . ¡ , f. ;. ,;.,/:! ~" < i ) I:.~ !I'-,~-:",,,,,, }";9~ '~-' , .,\ ;'~.i;),\ " I, ' ';.: '~f~¡~Fi~;~~~i~~î~;,~~ j:1~~~'~:'~ ,i~.l;;i:;i I ~'::'])f , ',- . - ... -'.' ,,', .~,-,; '... . '. -,; 'en " 'J/" -¡ ,.)f~;.. t.'" ,. ". ~-" ,~~, : ~f~~~Ji~i¡~i~¡~:~¡2iti\~~r / ] anuCULY 7 5 , 1 9 8 1 I~Vt. CfLCVLtel.S w. W~~ P.O. Box 18609 FOlL;t CVofLth, T e.XM 767 18 De.alL SÁ.JL: I woU£cl a/:JplteúCLte. veJLfj mtLch bung placed on YOWl. age.nda 60ft ,the me.eting 06 JanuaAY '26, 1981. ^1y iJU/1.-rJO~ e bOlL .t~ Jz.equ~t ÁJ!) ,to plLe-6ent a plLOpO-óa£. bOlt ,6ome mu,¿u-<6am{£~f apalt:ánent uni~) to be. COV1.,6Vtu~ted by ou.Jz. c.ornpany. OWL bLU£.ding-6 a/l..~ a uYÚque concept thaX. I bilie.ve ljOuJL c.ouncJ.£. w~/t bind VeJLlj ..[n,te.fLe-6Üng. e S"tnc.eJtely, .' .........-- "-. / !._,..J/' Bo b A6 h PfteAident Pvuna-Steet CO~v~:tJtuU-vion Co., I ne. BAlwR.. e e ,(\~ \.~t~\ J\\\ e e ~ ".. , ~,.) ~~~ '\. 'õ-_ ~\,':;, 'i.:.~~.. operation shall keep all streets, alleys and sidewalks adjacent to such excavations or building operations carried on by them, in a clean and orderly condition, and unobstructed, except as provided herein, during such operation, and at the expiration of the time stipulated in the permission aforesaid, they shall restore all such streets, alleys and side\'lalks to as good condition as they were before the beginning of such operations. 1.04 75% Brick All multi-family, two family and one family dV/ellings shall have exterior walls constructed of 75% brick, stone, or if apprõVëëf-ET-lhe--è:TfvCõuncíT~[other masonry or material s of equal characteristics. Exterior wall shall mean that exposed portion of the building from the foundation up to the ceiling line of the first floor of the building. SECTION 1.05 Barbed Wire Fence. It shall be unlawful for any person, persons, firm or corporatipn, or agent or employee thereof, to build, erect, keep or maintain or permit or allow to be'built, erected, kept or maintained, any barbed wire fènce on o!~ around any property or premises owned or controlled by such person, persons, firm or corporation within the limits of the City of North Richland Hnls, Texas. SECTION 1.06 Enclosure of Swimming Pool. a. Every swimming pool shall be completely surrouned by a fence or wall not less than four feet in'height, which shall be so constructed as not to have openings, holes, or gaps larger than four inches in any dimension except for doors and gates; and if a picket fence is erected or maintained, the horizontal spacing between pickets shall not exceed four inches. A d\'¡elling house, or accessory building may be used as part of such enclosure. b. All gates or doors opening through such enclosure shall be equipped ~'Jith a self-closing and self-latching device for keeping the gate or door securely closed at all times when not in actual use, except that the door of any dwelling which forms a part of the enclosure need not be so equipped. .. r,. " .". '~';' ." .~ <t.~, . , (': () \ . \~ () ,Þ,..,A~ -~ V" Ïi " Q ~ ,c '; ¥ /' "-,,;/\,,, ~' ~_....J~....,';> .~ 1. , ,: j lit-A.:' :~/\..1 , ~ . ~,- p i_ "'.--' ..........:.. (J ;;~F ----þ ~-'-, : \.:, '\, ~f1 E F~ "h~"""".,ø " : t.Þ \,!,~;S ',-"" ----...-.- ~ \; r o R':I -____4 . }'- . i 22, 19;3'1 --- /J J// iI f3ronstad, ;]irector or Utilities rth Ric!11and Hills ~GDp B20 :. i i 11 s) T ~ x.] s 7 oS 11 g (~. U\ , \ \. ' ~, '" ',", ;1 _ I ~ f '\ . '. ~, > í ¡ {, '~.I / \í¡/ 1\ Su bj ec~: 3- r;f)ÎI. CITY OF 'w~r! RI C!Li'¡'¡1'} LIT !.lS . SF:~~:¡ES 1990 !·fA.TER .~~.:'~f) SE~·n:r p~VEnu~ ga~'!!1 :: j .: '~ : 0 f) ~-: f)..J :: :: T Pursuant to your rer¡ue3t~ h,:> JnV2 pre0ar'~d a 1 i st G f constructior. projects to he Ü1(:: 111 ded in t h 8 ;r :'10- /\ r~ it n J -? Cr? It i fi cat e 1'1 -:: t J en ~',; . Tr.-:> ;:$ t i na t2d cost of the five projects list0ri totals $2,nOO,G00. The nrovisionscf the C~rtifi(:at~ r~uir~ that ·jesigrt Or! an fiv2 proJ~cts h,:oins Hit.hir: the next 5 i x r:Gnths and that a 1 ì Cf> com') 1 i.:te \-11th .1 '/",~ IS of t::e C~rti fi cate da t~. H{~ ,·¡ould r2'1U~S t tha t ~")íl SC h.::r!'J h: e,Jcn of ti--¡:::sP. project s fo r COU11C 11 ¡] :Jthori Zd t i Oil to het] i r' :; ns i n~.::-¡-i:19 i i1 Hha t~v'~r or:hr YO~I ff~e 1 anprnpria tr:? !ill tn-in t~l:? next T2t1 r10nths. e ~i~ s taw] rf:.1åy to ;¡ s s i s t VOl! in th2 i ;~01 ¡:Y1e:1ta ti on of e.3ch of th~se projects and !.,nl he avail...!bl!~ t8 discuss I~::ch of th~ Hith the Cauncil t1 n ,..~ s t £1 f f J ~ , )' () U reo 1 \! f~ n i en ca. ~ ¡'( Ie} 1,4 R D A. At U In, r) t:; £ . ~ . RU,:\/l j c cc: r-1r. , C h a r 1 e.5 L[. ~~ i 111 E1S) Ci ty Hanaq?r /ì ?!~ÿ ~~ l·rß~ > / , .Iii _ __ ~ ~~ 1 ~~ r ;ß~ JiJ~ ~~ / ~ µ4 e ~ ~ e e e ( ( NO-ARBITRAGE CERTIFICATE THE STATE OF T~~S § § COUNTY OF TAP~T § § CITY OF NORTH RICHL~~ HILLS § We, the undersigned, Mayor and City Manager~ respectively, of the City of North Richland Hills, Texas, who with other officers are charged with the responsibility in the issuance of bonds, DO HEREBY CERTIFY that to the best of our knowledge and belief, the . Íollowing facts and estimates are reasonable expectations as to H . future events regarding the amount, and use of funds, rec.eived ¡( from the issuance and sale of "City of North Richland Hills. Texas. " \{aterworks and Sewer System Revenl1:e Bonds, Series 1980t.) dated ;; September 1, 1980. in. the total principal amount of $2.400.000 n (hereinafter referred to as the "Bonds"), to wit: ¡ ~ ¡ : !' ; t ~ I, ~ ; H n ~ i! i; ! I! I , ' t: \ j t· H i 1 -n Ii ~ ~ i ~ J i : t p 1 : H U H 11 II i! t ~ Ii ¡¡ ! f H p Ii d p !! if 1: 1! .' ¡: (a) The Bonds were sold on the 8th day of September, 1980, at the price of par and accrued interest to the date of delivery, plus a premium of $ , and 'payment therefor occurred'on the day of , 1980~ the City having received the following amount fram the purchasers: ~ , , t i ~ . t ¡ i t 1 ! i ; J t , t t I j I f ¡ ! t r 1 t ì i I PRINCIPAL AtIOUNT ----------------$2,400,000.00 ACCRu~D INTEREST----------------- PP~IL~ ------------------------- T01'AL .MíOtJNT RECEIVED ------$ (b) The amount received from. the purchasers of the Bonds representing accrued interest and premium, if any~ was deposited in the interest and sinking fund for the Bonds to be used to pay the first interest pa)ïTIentto become due on the Bonds on March 1, 1981. (c) The balance of the amount received, $2,400,000, has been deposited in one or more construction aCColli~ts and allo,cated for various proj ects and purposes "tvhich are planned to be undertaken, accomplished and completed as ShO'\VTI in the attached Schedule A, which is made a part of this certificate for all purposes. i ~ (à) Within six (6) months from the date o£ this certificate the Cì·ty 'tv-ill have incurred substantial binding obligations or commitments for each project to be financed by the Bonds, either by entering into contracts for some part of the cost of each of the projects; £or construction, or architecr~ral se~,ices; or engineering services; or land ac~ùisitions; or site development; or cònstruction materials; or the purchase of equipmentjeach contract or commit::rJ1ent involving an expenditure in excess of 2-1/2% of that- portion of the estimated total project cost of each project to be £inanced by the Bonds. i ¡ t i ¡ ~ : , I .' , L . ; ! t ¡ r "eel liter entering into said contracts, work on the proj ect will proceed vlith due diligence to completion. j: n i' r t·, ( ~ : : ! ¡ ; , , (f) All of the spendable proceeds of the Bonds will be expended for project costs by the end of the three-year period fram the d2te hereof. . , . ~ J.J · , "f,~ ,. . \ e e " L i ~ : ¡ f: ¡ ¡ t: p t' \ : ¡: iÌ f ê H !1 r n I" q , . j I i: f! It t ¡ ¡¡ It II E I ¡ i; II ¡¡ E 11 ~ 1 e ' ; i¡ \ ' n ¡ ; ! i". ., f; " ! j 1 r 1 i I i; ( , \., (g) None of the projects will be sold or othen~ise disposed of, in whale or in part, prior to the. last maturity of the Bonds. J ~ (h) Save and exceDt for the Interest and Sinking Fund (to pay current principal and interest on the Bonds as the same matures) and the Reserve Fund (to proviàe a reserve in the @mount of $ - being the average annual principal and interest requirements of the Bonds and outstanding parity bonds) referred to in Section 12 of the Bond Ordinance, no other sinking fund or sLmilar fund has been created or established for the Bonds. Moneys' deposit~d in the Interest and Sinking Fund \vill be ~~pended within one year from the date of deposit and after the required æ~ounts have been acct..illlulated in the Reserve J;und, any earnings and profits from investoents of moneys deposited therein will be transferred to an operating account to prevent the accumu- lation therein of moneys in excess of the required amount. The foregoing certifications are based on facts, estimates and circumstances in existence on the date of this certificate, and on such basis it is reasonably expected that the above-listed events will occur. Furthermore, on the qasis of the foregoing the proceeds of the Bonds will not be used in any manner that would cause them to be or become arbitrage bonds under Section 103 (c) of the I.nternal Re,¡enue Code of 1954, as amended, or the Regulations thereunder applicable, thereto. , To the best of our knowleàge and belief, there are no other facts1 estimates or circumstances that would materially change the above~recited conclusions. We further certify that to the best of our knowleàge and belief, no Notice has been published in the Internal Revenue Bulletin w~th regard to the City under the provisions of paragraph (a)(2)(iii) of Section 1.103-13 of the Regulations and the City has not been advised that any such Notice is contemplat~d. EXECUTED this , 1980, the date of delivery of the bonàs hereinabove mentioned, be,ing the date. of issue as provided. in the Regulations. ~~ I Î , C~/ rt1/1~ M&yor, C~ty 0 North" Ric~ Hills:l T~""\:as City Manager~ City of North Richland Hills, T~as (ci ty Seal) . ' ! ~ 1· , .. -' :.. "~~" .. , " "";. .." -. , SCHED1JL.E A ;, Re = $2.400 I 000 "CITY OF NORTH RICHLAJ.'iD HILLS I TEXAS. \.JATERWOR.XS AtID SE~ÆR SYSTB~I RE'lENUE BO~1)S 1 SERIES 1980" e ;;t i ~ t: : ' £:,'./) ff I /( n 2. / i. L i< ! ~ f: 1 : L t L e ::4- /0 I_ I' , ¡ q ì t· r ¡ ~ H t ¡ H I; ; i ! ; f¡ i: H a H , . H H I ~ t! H ¡. II f J i; !I 5. e ; L f } 6~ i: ¡ : j i 1 ! ; I! ! ¡ ~ I I' ~ : h . ~ I: ; ; . I; ¡ ¡ L ~ I I (a) (b) (c) (d) Pro j ec t or Purp,ose Ident ifica tion : DAV IS BLVD. 2 r~. G. ELEVATED STORAGE TANK ADoune .c\llocateà: $ 1 ,600,000. Estim2ted Date (illonth and year) issue.r will have ente::.-ed into a substantial binding obligation or C0G2it~2rrt for proje;:t or pu:~?se described j.D-P- _ w ~.-.... ~; e~ attacrred certlI1.Cate. "-- OCIOBtR, 1930 _r~ EstiIîlat:2d Date (month and year) proJecc or pu.rpose \~ill be c03pleted or acc()mplished OCT08ER~ 1982 (a) (b) (c) Proj ect or Purpose Identific'atiOil: DAVIS BLVD. 16-INCH ' WATER LINE FROM SHADY GROVE TO STARN~S GAD PEount Allocated: 380,000. Estimated Date (month and year) issuer ~¡ill have enter'eel into 2. substantial binding obligation or cOillI!litmertt: for proj ec t or purpose described in p_ª]:a.g..Fa-p-~'F-,~..(d} vI ---E--h~' attacrled certificate. .~. ~- NOVEr~1ß::P~-1-9&B----~-~---' EstiLl1ated Date (month and year) proj ect or purpose. \~írr be completed or accomplished SEPTEr~8ER, 1981 (d) (a) (0) (c) Proj ect or Purpose Identification: CARDINAL LANE 16-INCH WATER LINE FROM SIMMONS ROAD TO COLLEGE HILLS ÞZOUZlt Alioea ted $ 300) 000. Estimated Date (month and year) issuer will have entered into a substantial binding obligation or co~itment for project or purpose de.scribed i~~_pªr2..~ Cd} of---·th~ attached. certificate. ·'",~~,.~__DEC E~1B ER,. 198..D..--¥..~..."'..,~··-·-·--· Estimated D2.te' (month and year) proj ect or purpose' ~'lÌ1L~ be completed or accomplished OCTOBER, 1981 (i:roj ect or Purpose Identification: DENTON HIGH'AAY 16-INCH ~__ If] HATER LINE FRO~1 HATAUGA ROAD TO GREENFIELD DRIVE . .Amount Allocated: $ 68"tOOO. " Estimated Date (month and )'22..r) issuer ~·;ill have entered: into a substantial binding obligation or commit cent for project or purpose described i~~~ the attach-ed certificate. ../ JANUARY, - 1981,__,) Estimated Date' (month, and )-rear or p'-1rpose \~¡i, 1 be completed or accomplished Jut y" ) 981 Proj ect or Purpose Identification: LEHIS LANE 12-INCH \'lATER LINE FROM DAVIS BLVD. TO NEWMAN DRIVE ...L\mount Allocated: ~ 52~OOO. Estimated Date (month and year) íssuer will have enterèd into a substantial binding obligation or co~itwent for project or purpose described in,,~.2,;L:c¿gr..aP.L(.d~ t.he attached certificate ".~ ,'--' FEBRUARY, 1981 _._'~'"':) Estimated Date (month and yð¿r) p.L.uj e·croi' -'purpose will ," be completed or accomplished (d) (a) (d) (a) (b) (c) (d) Estimated Date (month and year) all funds \?ill h2.ve be e d d þ,UGUST) 1981 en :<pen e \. e e e , -3 KNOWL TON-ENGLlSH-FLOWERS, INC. CONSULTING ENGINEERS / Fort Worth-Dallas November 7, 1980 Mr. Allen Bronstad, Director of Utilities City of North Richland Hills 7301 N.E. Loop 820 North Richland Hills, Texas 76118 Subject: 3-500, CITY OF NORTH RICHLAND HILLS, REVISIONS TO THE HRULES, REGULATIONS, POLICIES AND PROCEDURES FOR THE WATER AND SE~JERAGE SYSTEr1" In accordance with your instructions, we have prepared additions and changes to the subject manual, as presented in the enclosed revision pages, for your review and Council consideration. These revisions consist generally of the following items: 1. Fire protection coverage to include entire platted area. 2. Limitation on use of 4-inch water lines. 3. Elimination of cast iron and asbestos cement water pipe. Only ductile iron, PVC and concrete steel cylinder permitted on future installations. 4. Adjustmant to finished grade of water valve boxes, meter boxes, manholes, cleanouts, etc. required by Contractor. 5. Fine for unauthorized opening or closing of water system valves. We will be available to discuss with you and the Council these proposed revisions at your convenience. w, ~ ALBIN, P.E. RWA/ljc Enclosures cc: Nr. Charles W. Williams~ City ~1anager S5Ö FIRST STATE BANK BLDG. · BEDFORD. TEXAS 76021 · 817/283-6211· METRO/257-3367 ORDINANCE NO. BE IT ORDAINED by the City Council of the City of North R;chland Hills, Texas, that ORDINANCE NO. 381, "Rules, Regulations, Policies and Procedures for the City of North Richland Hills Water and Sewer System" adopted November 8, 1971, and as heretofore amended, be and the same is hereby AMENDED by substituting the pages numbered, 30, 31, 34, 58, 59, 62, 63, 63a, 63b, 64, 64a, 65, 65a, 66a, and 67, as Exhibi t nAu for the correspondingly numbered pages, if any, contained in such ordinance. The policy, procedure and specification changes presented in Exhibit "All shall take effect on APPROVED AND PASSED in regular Council Meeting on this the day of , 1980. Dick Faram, Mayor ATTEST: Jeanette Moore, City Secretary APPROVED AS TO FORM AND LEGALITY: Rex McEntire, City Attorney / .~.r.'...' ·T......'.· ~..>...,... .1,' . .. .. ~~ . '. . . #, ' ~~.. .~ d' \. ..'EVISIONG · . , I,t, .. e e e maintenance and operation of the system. These valves shall be 1~1ue11er", or approved equal. 3. Standa rd three-way, improved type, dry head fi re hydrants cons tructed to provide a minimum of three (31) feet of covèr over the connecting main shall be installed at locations such that all areas of single family development are located within a five hundred (5001) foot radius from a fire hydrant or all such hydrants will be placed so that hose line routes will be no more than eight hundred (800') feet by public right-af-way. In the areas other than single family development fire hydrants shall be on a three hundred (3001) foot radius. The area of development shall be defined as the full area delineated by the limits of the approved develop- ment plat. These fire hydrants shall be "Mueller", or approved equal. 4. All fire hydrants shall be installed with a cut off valve and shall be served by a six inch (6") or larger Supply or Distribution Main. 5. Four inch (4") Distribution Mains shall be ductile iron pipe and shall not be used to serve more than twenty (20) Standard 3/4" Service Con- nections or ten (10) Double 3/4" Service Connections and no 4" Distri- bution Mains shall exceed one thousand feet (1,000');n length between direct connections to larger mains. Four inch (411) mains may be in- stalled in cul-de-sacs to serve not more than four (4) residential customers, provided that no fire hydrants are required in the cul-de-sac. 6. All distribution mains from nominal 6" 1.D. to 12" 1.0. inclusive shall be either ductile iron or PVC in accordance with the Standard Specifi- cations. - 7. All supply Mains and Distribution Mains installed within a Developer's platted and filed area of development must extend to the borders of his development as required for future extension of the Cityls system, regardless of whether or not such extensions are required for service within the area of development. 8. After installation of water lines and curb and gutter the Contractor will be required to install all meter boxes to top of curb grade at his own expense. The City will furnish the meter boxes._ In addition, the Contractor will be required to adjust all valve boxes, fire hydrants, etc., to top of curb grade if the water main is located behind the curb and gutter. Afterwards, the Builder or Homeowner will be responsible for adjusting valve boxes, fire hydrants, meter boxes, etc., to finished lot grade upon final inspection. 9. A $200 fine will be levied against any unauthorized person or persons opening or closing a City water valve without the express pennission and supervision of the City Utility Department. R 09/23/74 R 11/28/77 Page 30 ./ e e - 10. Water system extensions and improvements shall be designed in accordance with Master Water and Sewer Plan. c. SE\~ERAGE SYSTEM DESIGN AND CONTSTRUCTION STANDARDS. 1. All materials and workmanship used in extensions or improvements to the City's sewerage s'ystem shall confonn to the latest revisions of the applicable sections of the American Society of Testing Materials Standards as prescribed in the latest revision of the Detailed Specifications which have been adopted by the City; a copy of which is on file at the offices of the City and will be made available for inspection upon' , request. All installations shall conform to the latest applicable Design Criteria for Sewerage Systems as published by the Texas State Department of Health. Approach Sewers shall be designed with consideration for serving the full drainage area subject to collection by the system, but modified as governed by the projected rate of development and the financial feasi- bility of the proposed extension. Lateral Sewers shall be designed to serve the planned area of development with provision for extension where possible into adjacent undeveloped areas. . The popul ation density for undeveloped areas shall be based on sur- rounding development, but shall not be less than 9.5 persons per acre unless approved otherwise by the City. The contributing sewage flow shall be determined on the basis of an average flow of 100 gallons per person per day without separate provision for infiltration. Outfall Sewers, Approach Sewers and Collector Sewers shall be designed on the basis of the following peaking factor formula: Peaking Factor = 1 + 14 4 + V p 2. P = Population expressed in thousands. 3. All Lateral Sewers or Sewer Mains installed within a Developer's platted and filed area of development must extend to the borders of his develop- ment as required for future extensions of the collecting system regardless of whether or not such extensions are required for service within the development. 4. Detailed determination of the sanitary sewerage area shall be the re- sponsibility of the City. Where there Page 31 11. The following design practices shall be consigered as generally appli~ cable, but they may be modified by concurrence of the City·s Eng;neer(s) and Director in specific cases where they are impractical. No sewers other than Service Sewers and Ho~se Sewers shall be less than six (611) inches in diameter. Service Sewers and House Sewers shall not be less than four (411) inches in diameter and shall approach the "Lateral Sewer" on at least a one (1%) percent grade. All Lateral and Approach Sewers shall be designed with hydraulic slopes sufficient to give mean velocities, when flowing full or half-full of not less than two (2.0') feet per second based on Kutter's or Manning's formula using an unll valve of 0.013. Grades which will produce velocities in excess of five (51) feet per second shall be avoided. Sewers shall be laid in straight alignment wherever possible. Where horizontal curvature must be used, the smallest radius shall be one hundred (100') feet. Manholes shall be constructed at all changes in alignment, grade or size of sewer intersection of other sewers except Service Sewers and at the ends of all sewer lines that will be extended. Intersecting sewers shall enter the manholes at the crown line or top of the intersection or main sewer and the inverts of all manholes shall be formed concave to fit the connecting sewer pipes. 12. All six (611) inch and eight (811) inch sewer lines shall be air tested and hold four (4) P.S.I. for twenty (20) minutes. All ten (10n) inch and larger sewer mains shall hold three (3) P.S.I. for fifteen (15) minutes. 13. The Contractor will be required to adjust all sanitary sewer manholes and cleanouts to top of curb grade after construction of curb and gutter if the sewer main ;s located behind the curb. Afterwards~ the Builder or Homeowner will be responsible for adjusting manholes and cleanouts to finished lot grade upon final inspection. The top of the manhole cone shall be installed at least 18 inches below the proposed finished grade with final adjustment of·rim made with precast reinforced concrete grade rings or red face brick, as shown in the manhole detail on page 82. R 11/28/77 Page 34 e e - Item Trenching and Backfill such usage. All necessary precautions shall be taken by the Contractor, and provisions shall be made for the protection of the new work, and all blasting shall be so conducted as not to endanger persons or property. Only a sufficient quantity of explosives for the immediate day's work shall be kept at the site of the work by the Contractor. Caps, exploders and explosives shall be stored separ- ately. The Contractor shall be responsible for, and shall make good, any damage caused by blasting or accidental explosions. 12. Tunnelling and Casing. Tunnelling under highways, streets, or railroads shall be accomplished by means of jacking and tunnelling equipment which has been åpproved prior to starting tunnelling operations. Tunnels shall be pressure grouted or backfilled as completely as practicable with selected materials, compacted by means of mechanical tampers or hydraulically placed in such manner that no voids remain between the backfilled material and the roof of the tunnel. Tunnelling and casing shall be further in accordance with the Item, IIRailroad and Highway CrossingsU or as further provided in the Special Provisions or shown on the plans. 13. Crossings to be Kept Open. At such street, railroad, and all other crossings as may be designated: by the Engineer, the trenches are to be hand tamped and filled in such a manner as to prevent any serious interruption of traffic upon the roadway or sidewalks, the cost thereof to be borne by the Contractor. 14. Protection of Unfinished Work. Before leaving work for the night, 'or during a storm, or at other times care must be taken to protect and securely close the unfinished end of the pipe. Any earth or other materials that may find entrance into the pipe through any such open or unplugged end of the pipe must be removed at the Contractor's expense. 15. Lights and Guards~ The Contractor must provide and maintain adequate de,tours around the work under construction. The Contractor must provide sufficient lights, warning signs~ and watchmen to provide adequately for the safety of the public. 16. Backfill, Materials and Workmanship. Excavation shall be backfilled only with approved materials; the type of backfill shall vary according to the type of pipe being installed. (A) Unless special granular embedment or encasement is required, the injtial blinding-over of the pipe shall be as follows: (1) All polyvinyl chloride (PVC) pipe shall be embedded and blinded over with not less than 4" below & 4" above the barrel of pipe with select IIhauled-in" cushion sand. Material from the trench will not be used for cushion sand unless the Contractor furnishes suitable reports from an independent laboratory showing that it has proper qualities. Page 58 Item Trenching and Backflll (2) All ductile iron or steel cyl inder concrete pipe laid on rOCK or i" clay material with P.I. of 20 or greater shall be embedded and bl"1. ..ed over with not less than 411 below and 4," above barrell of pipe with select "Hauled-inll cushion ~and. (3) Ductile iron or steel cylinder concrete pipe laid through materials of P.I. less than 20 which granulate or crumble to particles less than 1" in size may be blinded and backfilled with the native material unless some other condition is found that would be deterimental to this installation. Embedding and blinding must be not less than 4" below and 4u above barrel of pipe. (4) All clay or other sewer pipe shall be blinded and backfilled with native material where the excavated material is good earth free from rock, broken concrete, broken pavement or other lumpy material larger than I" in the greatest dimension. The pipe shall be blinded by carefully placing by hand, and hand or mechanically tamping layers to a height twelve (1211) inches above the pipe. (B) After initial blinding-over has been accomplished as specified above, the remainder of the backfill shall be placed and treated depending upon the location of the trench as follows: (1) Where trenches are located in open or undeveloped land, and in land which has not been planned or platted and submitted for review by the City Planning Commission or City Council, backfill shall be added 1..') the trench to bring it up to natural ground level. The ditch sha.. then be allowed to settle with additional fill material added from time to time as natural settlement is accomplished and until all back-' fill has stabilized or the period of maintenance as prescribed for the project has expired. (2) Where trenches are located in land for which a preliminary plan has been or is being presented to the City Planning Commission or City Council, the backfill shall be jetted until all settlement has been ceased. Jets shall be used at not over six (6) foot spacing and on alternate sides of the trench. After jetting and prior to any street construction in the area planned, the ditches shall be thoroughly nwalked in" by tracked machinery and any settlement corrected by addition of material up to ground level. (3) Where trenches are located in areas dedicated as streets in a plat which is filed of record, these trenches shall be backfilled with select material from trench excavation and this backfill shall be hand or mechanically tamped in not more than six (611) inch layers or hydra-tamped to minimum 90% density. If the material is dry, and if so instructed, the Contractor shall moisten the backfill material in order to obtain satisfactory compaction. (4) Where trenches are located in existing paved streets, all excavated material shall be removed from the site and the full trench abovf initial embedment filled with crushed stone or other approved granular material of a nature that Page 59 e e I e ITEM WATER DISTRIBUTION SYSTEM 1. Description. This item covers the material and labor required for the construcion of the water distribution system, or extensions to the existing system as shown on the plans. Included are all mains, laterals, valves, valve boxes and appurtenances unless specifically covered by separate specification item. IIService Connections", "Railroad and Highway Crossings" and other special devices and situations will be covered by separate items. This specification item may be amended or adapted to the particular project by the IISpecial Provisions. It 2. Excavations and Backfilling. All trenching and backfill shall be accomplished in conformity with the specification item, IITrenching and Backfillll, and the costs of furnishing and placing cushion sand or other embedment material as required in Section 16 of the "Trenching and Backfill" item shall be included in the installed price of each size and type of pipe unless specifically provided otherwise in the uSpecial Pro- visions" and JlProposalll. 3. Selection of Pipe Type. All buried distribution system pipe used on this proj,ect shall be Ductile Iron, polyvinyl chloride (PVe) or Copper suitable for working pressure of at least 150 p.s.i., unless otherwise provided in the IISpecial Provisions" or shown on the plans. The selection of pipe type for any given situation shall be governed as follows: (a) All service lines 211 and smaller shall be Type uK" copper. (b) All distribution mains smaller than nominal 6" 1.0. shall be ductile iron and if smaller than 4", joint lengths shall not exceed 12 feet, nor shall wall thickness be les.s than 0.25". (c) All distribution mains from nominal 611 1.0. to 1211 1.0. inclusive shall be either ductile iron or polyvinyl chloride (PVC) at Contractor1s option, with the type selected to be stated in the Proposal. (d) Pipe larger than ncxninal 1211 I.O. will be "of type selected by the City based upon the individual circumstances of the particular job involved. Galvanized steel or other special types of pipe shall be used only when specifically approved and provided on the plans or in the nSpecial Provisions." Where more than one class of pipe is required, the location of the various classes will be shown on the plans. Pa·ge 62 4. Materials Specifications. 4.1 Copper Pipe shall be cold drawn seamless tubing and it shall conform to A.S.T.M. Specification B88-66a~ Type K; Federal Specifi- cation WW-T-799, Type K; and ~WA C800-66~ Type K. All brass castings shall conform to A.S.T.M. Specification B62-63 for Composition Bronze or Ounce Metal Castings. 4.2 Ductile Iron Pipe in sizes 3" through 54" nominal I.D. shall conform to the latest edition of AWWA C151 (ANSI A21.51) as further clarified or excepted herein. The ductile iron pipe shall be manufactured with a metal having a tensile strength of 60~OOO p.s.i.~ yield strength of 42,000 p.s.i. and a 10% elongation (60-42-10). The thickness class of ductile iron pipe shall be adequate for the internal working pressures, external loads, and laying conditions as shown on the plans~ and unless specifically provided for otherwise on the Plans or in the Proposal and/or Project Specifications shall be not less than that required for an internal working pressure of 200~s.i. and for installation with 5-feet of cover in laying condition "A"~ flat bottom trench with untamped backfill computed in accordance with the latest edition of AWHA C-150 (ANSI A21.50) "Thickness Design of Ductile-Iron Pipe", nor shall the thickness be less than the minimum thicknesses tabulated below: NOMINAL DIAMETER OF PIPE (INCH) 3 4 6 8 10 12 14 16 18 20 24 MINIMUM \'JALL THICKNESS (INCH) 0.25 0.26 0.25 0.27 0.29 0.31 0.33 0.34 0.35 0.36 0.38 MINIMUM THICKNESS CLASS 51 51 50 50 50 50 50 50 50 50 50 Ductile iron pipe shall be furnished with nominal laying lengths of 18-feet~ with permissible shorter random lengths as specified in AWvlA CI51. All ductile iron pipe shall have a "Standard'Thicknessl~ cement mortar lining and bituminous seal coat over the cement mortar, lining in accordance with latest edition of AWWA CI04 (ANSI A21.4). Ductile iron pipe shall have a bituminous "Standard Outside Coating" of either coal tar or asphalt base in accordance with the latest edition of AWWA CI06 (ANSI A21.6). R 01/28/74 Page 63 e All ductile iron pipe joints shall conform to the latest edition-of AWWA Cll! (ANSI A21.11) and may be either "t~echanical Joint" or "Push On" type at the Contractor1s option unless specifically stated otherwise in the Project Specifications. Bolts scheduled for use with mechanical joints shall be of corten type steel (IIUsalloyll) or other approved, corrosive resistant material which is cathodic to the pipe. Ductile iron pipe and fittings shall be wrapped with polyethylene as hereinafter specified in the Proposal and/or Project Specifications. 4.3 Polyvinyl Chloride (PVe) Pressure Pipe in sizes 6" through 12" nominal 1.0. shall confonn to the latest edition of A~/WA C900 pressure class 150, (DR 18), or pressure class 200, (DR 14), as further clarified or excepted herein. The PVC pipe shall have ring joints (flexible elastomeric seals) as recommended by the pipe manufacturer and shall bear the seal of approval (or I1NSFu mark) of the National Sanitation Foundation Testing Laboratory for potable water pipe. Pipe and fittings must be furnished with non-toxic lubricant. e PVC pipe shall be furnished with standard laying lengths of 20 feet with permissible shorter random lengths as specified in AWWA C900. Bedding conditions shall be as specified in Paragraph 16 (A) (1) of the Trenching and Backfill specifications. The class of PVC 1120 pipe shall be adequate for internal working pressures, external loads, and bedding conditions as shown on the Plans, and unless specifically provided otherwise on the Plans or in the Proposal and/or Project Specifications, shall be not less than that required for an internal working pressure of 150 psi for installation with 3 feet of cover in an embedment which shall conform with Class UBU as detailed in ASCE Manual No. 37, or with the recommended practices given in ASTM 0-2321 and computed as specified in Appendix A, Section A3.1, of AWWA C900. The dimensions and pressure classes permitted for Dimension Ratio (DR) for PVC 1120 pipe with ductile iron pipe equivalent OD's are shown below: NOMINAL PRESSURE DR AVERAGE t,tIN I~1UM WALL SIZE CLASS 00 THICKNESS ( INCH) ( PS I) (INCH) ( INCH) 6 150 18 6.900 0.383 6 200 14 6.900 0.493 8 150 18 9.050 0.503 8 200 14 9.050 0.646 10 150 18 11.100 0.617 It 10 200 14 11.100 0.793 12 150 18 13.200 0.733 12 200 14 13.200 0.943 Page 63a Taps for service connections shall be made at locations approved by the City and the tap shall be made using a bronze service clamp with double strap, and no more than one (1) service tap shall be made with each service clamp. Page 63b e 4.4 Fittin s for Ductile Iron and PVC Water Distribution Pi e shall be ductile iron conforming to AWWA CII0-7I ANSI A21.10-1971) designed for a working pressure of not less than 150 p.s.i. nor less than the design pressure of the pipe in which they are installed. All cast iron fittings shall have a IIStandard Thickness" cement mortar lining and bituminous seal coat over the cement mortar lining in accordance with AWWA CI04-71 (ANSI A21.4-1971). Ductile iron fittings shall have a bituminous "Standard Outside Coatingll of either coal tar or asphalt base in accordance with AWWA CI06-70 (ANSI 20.6-1970). Unless provided for otherwise on the Plans or specified otherwise in the Proposal and/or Project Specifications, fittings for direct burial underground shall have joints which are either of the IIMechanical" or IIPush On" type manufactured in accordance with the requirements of AWWA Cl11-72 (ANSI A21.11-1972); and where such buried fittings cannot feasibly be restrained by concrete blocking, the Contractor shall provide other means to prevent joint separation. Fittings installed in exposed locations shall have joints flanged with ASA 125 lb. flanges unless noted otherwise, or if installed with pipe rated greater than 150 p.s.i. working pressure, flanges shall be rated equal to or greater than the design working pressure of the pipe. e Gaskets shall be "Rainbow", "Durable Garlock", or approved equal. Gaskets ei ght (8") inch di ameter shall be 3/32" thick un1 ess speci fi- cally required otherwise by individual job requirements. Bo1 ts shall be of "Cor-Ten" type "Usa1loy" or other approved cor- rosion resisting material with American Standard Heavy Unfinished Hexagonal Heads and the nuts shall be American Standard Heavy Unfinished Heaxagonal dimensions as specified in American Standard for Wrench Head Bolts and Nuts and Wrench Openings (A.S.A. B 12.2- 1941). All bolts or bolt-studs, if used, and all nuts shall be threaded in accordance with American Standards or Screw Threads (A.S.A. 81.1-1935). Coarse-Thread Series Class 2 Fit. 4.5 Gate Valves which are to be installed at locations shown on the plans shall conform to the requirements of A.W.W.A. C500-71, liGate Valves - 3 In. through 48 In. - For ~~ater and Other Liquids", except for the changes and additions specifically outlined below. Unless specifically provided for otherwise on the Plans or specified in the Proposal and/or Project Specifications, gate valves shall be of the double-disc, parallel seat internal wedging, non-rising stem, cast iron body and bronze mounted type designed fQr 200 p.s.i. working pressure 400 p.s.i. test pressure, in sizes 2" through, 1211 and 150 p.s.i. working pressure, 300 p.s.i. test pressure, in sizes 14" through 4811. e All gate valves, unless otherwise shown on the plans or specified shall be installed in a vertical position. Page 64 Valves shown in the plans or specified to be installed horizontally in horizontal pipelines, shall be equipped with gearing, grease case, track, roller and scraper mechanism that will function properly to local conditions equal to not less than two and one-half times the maximum design conditions required. for the valve without failure. of any nature. . The operating nut shall be 2" square. To open the valve, the operating nut shall be turned to the Left (counter clockwise) whether the operating nut is located directly on the valve stem or not. Unless specifically provided for otherwise on the Plans or specified in the Proposal and/or Project Specifications, the Contractor shall have the option of furnishing valves with any of the following joint types or combinations thereof: 1. push-on joint 2. Mechanical joint 3. Flange joint to match connecting flanges 4. Concrete pipe joints to match the specific concrete pipe manufacturer's pattern for gasket joints on which it is to be installed. In addition to the above general requirements, gate valves shall be designed so that when closing or opening the valve, the discs mOve freely with the wedging mechanism in a collapsed position, thus eliminating abrasive action between the seat rings and the disc rings. I To eliminate deflection of the valve discs, seating force resulting from the wedging mechanism shall be applied equally and at four separate contact points on the back side of each disc. The stem seal for all gate valves shall consist of an IIO"-ring type packing. Lubrication of the thrust collar shall be accom- plished by means of a lubricant sealed between two "Oil-rings. Seat rings shall be screwed into the valve body. The disc rings shall be pressed or rolled into the discs in an approved manner. Both seat rings and disc rings shall be of bronze and shall make an absolutely watertight. joint. The threads on the bronze stem shall be Acme threads. The stem for valves, size 1611 and smaller, shall be made from rolled bronze rod with the collar formed by a forging operation. Stems for valves 18" and larger may be made from rod or casting. Page 64a e Unless specifically shown on the Plans or specified otherwise, all horizontal gate valves and vertical gate valves 18n and larger shall be equipped with gears. Cut-tooth steel gears having a factory lubricated enclosed gear case of the "Extended Type" shall be furnished. - Unless specifically shown on the Plans or specified otherwise, gate valves 1611 and larger shall be equipped with non-rising stem type by-pass valves. When specifically shown on the Plans or specified in the Proposal and/or Project Specifications, geared gate valves shall be equipped, \"ith a Uposition indicator" to show the position of the gate in relation to the ports. All external bolts and nuts shall be made from a corrosion- resistant material which is cathodic to the valve body. Extension stems of sufficient length to bring the operating nut up to within one foot (I') of the surface of the ground shall be provided when the operating nut on the gate valve or by-pass valve is three feet (3') or more beneath the surface of the ground. e All iron castings; bonnet, body, discs, etc., shall be made from a superior quality of iron. Iron shall be tough and of even grain and shall possess a tensile strength of not less than 31,000 p.s.i. All bronze castings, except the stem, shall have a tensile strength of not less than 30,000 p.s.i. All stems shall be made from bronze having a tensile strength of not less than 60,000 p.s.i. In addition to the detailed specifications, above, all gate valves furnished for underground installation shall comply in all respects to the American Water Works Specifications, and shall be Mueller or approved equal. Valve keys shall be furnished only if specifically called for in the IISpecial Provisions" or "Proposal". Valves installed in exposed locations shall generally comply with the above requirements, except with flanged joints and other special details as shown on the plans or in the Special Provisions. e 4.6 Cast Iron Valve Boxes and Covers shall be provided for the complete installation of the gate valve and by-pass valve. The boxes shall be installed as shown on the details included herein. Adjustment to final grade and pouring the 'concrete base block where required shall be included in the price bid for valve and boxes. 4.7 Fi re Hydrants shall be of proper length for 3611 cover on ma ins~ unless specifically shown otherwise and shall have one (1) 4~" pumper nozzle and two (2) 2~tI hose.nozzels, national std. threads. Fire hydrants shall open counter clockwise and shall be manufactured in strict compliance with the latest specifications as approved by the American Water Works Association. In addition, other design Page 65 service connections as covered by separate detailed specifications. No other types of small diameter pipes and fittings will be used in the system except with specific approval of the individual in- stallation. 4.11 Polyethylene Wrapping of Water Lines: Polyethylene wrapping for ductile iron water mains shall consist of a thin tubular section of polyvinyl plastic, which has a high dielectric and tensile strength, for use in insulating the pipe from the electrolytic action encountered in highly active soils. Polyethylene wrapping shall consist of opaque polyvinyl sheet continuously thermal bonded to form a tubular section. The tubes may be supplied in bulk length on rolls; however, when supplied in specific pipe lengths, the tubes shall contain a minimum of three (3') feet over the actual pipe leng~h to allow for overlap. The polyvinyl sheet of film for the tubular wrapping shall be of virgin polyethylene, as produced from DuPont Alathon Resin or U.S.!. Petrothene Resin or equal. The material shall be of an 8 mil un; fom film thickness and be free of imperfections such as pin holes, etc., after being thermally seamed into tubular form. Tape for use in conjunction with the installation of the poly- ethylene wrapping shall be Polyken No. 900 (polyethylene), Scotchrap No. 50 (Polyvinyl), or equal. Tape shall have a minimum thick- ness of 10 mils with a maximum thickness consistent with a pliable installation. The polyethelyene material shall have no volatile constituents, the loss of which may affect ductility. The material shall also have the following properties: (a) Mechanical: The polyethylene film shall have a tensile strength of 1200 - 2500 psi, with an elongation of up to 600%. (b) Dialetric: The film shall have a dieletric strength of 500 to 850 volts per mil thickness. (c) Chemical: The film shall be chemically inert, with a moisture absorption rate less than .01% in 24 hours. Page 66a e 5. Construction Methods shall be as set forth following herein and ;n event a situation accurSt not covered by this specification, the requirements set forth in A~~HA Standards C600-77, IIInstallation of Gray and Ductile Cast Iron Water Mains" and C900-75-A6, "Installation of PVC Water Pipe" shall govern. 5.1 Receivin, Unloadin and Distribution of Materials: All pipe, special castlngs, gate va ves, fire hydrants, and other fittings may be delivered by the Contractor on sidings or team tracks at available points, as near the work as practicable. Should switching charges be lawfully demanded by the railroads, the Con- tractor will pay any such charges incurred. All pipe, special castings, gate valves, valve stems, etc., shall be carefully examined by the Contractor before unloading, and the atten- tion of the Engineer and the Agent of the Railroad called to breaks, cracks, or other defects. A certificate of acknowledgement of defects, where such defects are caused by transportation, a receipt signed by the Agent of the Railroad with authorization to do so, shall be taken by the Contractor. All materials shall be unloaded at the Contractor's risk. e All pipe, special castings, gate valves and fire hydrants shall be lifted by tackle not skidded or dumped off cars and trucks. No dumping or other rough handling will be permitted. All pipe and other material shall be transported to site of trench and distributed in such manner as to be convenient for laying and placed in such a manner as to afford as little inconvenience to the public as possible. · 5.2 Cost of unloading, transporting, trucking and distribution of materials shall be included in the unit prices bid for material in place, it being intended that no separate price be paid for any unloading, transporting or distribution of material. Pipe Laying: All pipe, castings, valves and fire hydrants shall be thoroughly cleaned of all dirt and trash before lowering into the trench. Pipe and appurtenances shall be lowered into the trench by derrick, crane, side boom or other means capable of completely lifting the pipe --- not dumped or rolled in by ropes. Before lowering, and preferably while suspended, pipe shall be rung with a light hammer to detect cracks or flaws and shall be carefully examined to see that the inside of the pipe is clean. After lowering in the trench and before "stabbing hometl, the interior and outside of the pipe joint shall again be cleaned of any dirt, mud, or other foreign matter. Each joint of pipe shall be swabbed while suspended in air. e During the process of sterilizaton of the intalled pipe, as specified herein, should the newly installed. lines produce excessive mud or other foreign matter or rail to produce the calculated discharge quantity, the Contractor shall pay the full cost of such cleaning, removing sections of pipe for inspection or installing cleanouts ,as may be required to correct the situation. Page 67 E···· r:.. ':c' ,.' .~. D,¡;:<",;·; ,.~.' c- ~ .' . ~Ii . (...). ì":~ ;( ~ .. -~t~·..·' .,' - -. ..~"'t,'. ~; , " r~;";" '~:Vd I'~' Sft~'; JI:' (){ß" ~~ ~Ni i J'" $. ' ' ' ,;,',.""...,.~, ~L _ ~ I t,. ... > ~. ~. .'?" ø ":;it_.t· ~ f' ~: '. ., ~ ,<" I ..... . - , I t '-~~ e e e , ' ,~ ....... '-'" maintenance and operation of the system. These valves shall be IJMueller", or approved equal. . 3. Standard three-way, improved type, dry head fire hydrants constructed to provide a minimum of three (31) feet of cover over the connecting main shall be installed at locations such that all areas.,of development are located within' a five hundre~ font (500') radius from a fire hydrar¡t.; These hydrants shall be nMuellerf~, or approved equal. 4. All fire hydrants shall be installed with a cut. off . valve and shall be served by a six inch (6") or larger Supply or Dîstribution Main. 5. Four' inch (411) Distribution Mains shall be cast iron pipe and it shall not be used to serve more than t~lenty (20) Standard 3/411 Service Connections of ten (10) Double 3/4u Servi.ce Connections and no 4." Distribution Mains shall exceed one thous- and feet (1 ,000 t) in 1 ength between di rect connec- :. ,tions to larger mains. 6. Mains Six'inches (6ft) and larger shall be cast iron or ã~hp~tn, cement in accordance with the Stand~ . ~pecifications. . 7. All Supp1y Mains and Distribution Mains installed within a Developer IS' platted and filed area of development must extend to the borders of his development as required for future extension of the City's system, regardless of whether or not such extensions are required for service within the area of development. .' : ~ I .J - 6.- ,. --' . ... ,;;1 ! ~:'.., . .,.,......, . - i! It , ". - ~ ~ , ...~/~ R 9-23-74 It R-ll/28/77 Page 30· / ,:,." .. :, .... . ~ '. ' .i .'- ::~ ~ ~ . -:. _<11'-' '. ~" ~"" ~ ,,-,: 't ~f .~ ' ~ ] 8. Water system extensions and improvements shali.be designed in accordance with Master W~ter and Sewer Plan. C. . SEWERAGE SY~Tm:! DESIGN AND COHSTRUCTIOIi STj..:t.DARDS. 1. All mat9rials and workmanship used in extensions or improvements to the City' s se'r'iere,ge system shall con- form to the latest ,revisions of the applic~ble sec- tions of the American Society of Testing ~aterials Standards as prescribed in the latest revision of the-Detailed Specifications which have been 'adopted by the City; a. copy of V'ihicÌl is on file at the offices of tile City and will be m&de available for inspection upon request. All installations shall conform to tae latest applicable Design Criteria for Sewerage Systems as published by the Texas State Dep~rtmentof.Health. 2. Appro2.ch Sewers ,shall be'designed with cor..sid~ration for serving the full drainage area subject tocollec- tion by the system, but modified 8S governed by the projected rate of development anå. the financib.l feasibility of the proposed extens~on. Lateral Se~ers shéill be designed· to serve the planned 'area of developmen-t with' provisio~ for,.',extension ~here .poss- ible into adjacent undeveloped areas. The population density for undeveloped &reas shall: be .based on .surrounding development, but sh~ll not be less then .9.5· persons per ~cr~ unless approved 'otherwise by the. City., The contributing sewage flow shall be determined on the' basis of an average 'flow of 100 gallons per person perd,ay witÜout sephra.te provision for infiltration. Out~~ll Sewers, Approach Sewers and Collector Sewers shall be designed on the basis of the following peak~ng factor forrnul~: .Peaking Factor = 1 + 14 4 + 'I. .. _, V p-... P = Popule.tion expressed. in··thousands. '.' 3. All Lateral Se.....ers.,~or Sewer Mains installed within a Developer'spl~tted and filed area of development must extend to the borders 'of his development ~s required for future extensions of the collecting system regardless of whether or not such extensions are required for service within the development. . ~, 4. Detailed determination of the ·sani tary sewerage G.rea shall be the responsi bili ty of trie Ci ty. ·~\11ere. tìlere Page 3l , R, R . . I ., i F I I ~ t . q - I h ~ f I I t I ¡ ~ i c f! .~ ~ ~ ~ ~ ~ ,~ I ! ! .. ~ I i i f i I ~ i ; ~ I Î i fI . ~ 11. The follo~jng design practices shall be considered as generally applicable~ but they may be modified by concurrence of the City's Engineer (5) and Director in specific cases where they are impractical. No sewers other than Service Sewers and House Sewers shall be less than six (6") inches in diameter. Service Sewers and House Sewers shall not be less than four (4") inches in diameter and shall approach, the "Lateral Sewer" on' at least a one (1%) per cent grade. All Lateral and Approach Sewers shall' bè designed with hydraulic slopes sufficient to give mean velocities, when flowing full or half-full of, not less than two (2.0') feet per second based on' Kutter's " or Manning's formula using an unit valve of 0'.013. 'Grades which will produce velocities in excess of five (51:) feet- per second shall be avoided. Sewers shall be laid in straight alignment wherever possi'ble. Where horizontal curvature must be used, the smallest radius shall be one hundred (1001) feet. Manholes shall be'constructed at all changes in alignment, grade or size of sewer intersection of. . other sewers except Service Sewers and at the ends of all sewer lines that will be extended. Inter- secting sewers shall enter the manholes at the crown line or top. of the interse'ction or main sewer and the inverts of all manholes shall be formed concave to fit, the connecting sewer pipes. 12. All six (6") inch and eight (8U) inch sewer lines shall be air tested and hold four (4) P.S.I. for twenty (20) m; nutes . A 11 ten (10")·; nch and 1 a rger sewer ma ins sha 11 hold three,( 3) P. S.. I. for f,i fteen (15) minutes. ' R-l1/28/77 Page 34 ~ ... Item Trenchinq and Oackfi11 such usage. All necessary precautions shall be takcn by the Contractor, and prov- isions shall be made for the protection of the n~ work, and all blasting shal' ~e so conducted as not to endanger persons or property. Only a sufficicnt quanti~, of exp los ¡ ves for the immed i ate dôy I s work sha 11 be kept at the site of the work by the Contractör. Caps, exploders and explosives shall be stored separately. The Contractor shall be responsible for, and shall make good, any damage caused by blûsting or ÐccJdentù1 explosions. 12. Tunne11inq and Cesing. Tunnelling under highways, streets, or railroads shall be accomplished by means of jacking and tunnelling equipment which has been approved prior to starting tunnelling operations. Tunnels shall be pressure grouted or bôckfil1ed as completely as practicable with selected materials, compacted by means of mecha~~ ¡cal tampers or hydraulically placed in such manner that no voids remain between the backfilled material and the roof of the funnel. Tunnelling and casing shall be further in ûccordõnce with the Item, "Railroad and Highway Crossings" or as further provided in the Special Provisions or shown on the plans. 13. ~rossinqs to be Kept Open. At such, street, railroad, and all other crossings as may be designated by the Engineer, the trenches are to be hand tamped and filled in such a manner as to prevent any serious interruption of traffic upon the roadway or sidewalks, the cost thereof to be borne by the Contrnctor. 14. Protection of Unfinished Work~ Oefore leaving work for the night, or during a storm, or at other time~ care must be tcken to protect and securely close the unfinished end of the pipe. Any earth or other materipls that may find entrance into the pipe through any such open or unplugged end of the pipe must be removed at the Contractor's expense. 15. liqhts and Guards. The Contractor must provide and maintain adequate detours around the work under constructian. The Contrûctor must provide sufficient lights. warning signs, and watchmen to provide adequately for the S2fety of the public. 16. Oackfil11 Mûteria1s and Workmanship. EXCûvðtio~ shall be backfilled on1y with approved materia1sj the type of bðCkfi11 shall vary ðccordtng to the type of pipe being insta11ed. (A) Unless special granular embedment or encasement is required, the initiðl blinding-over of the pipe shall be as follows: (I) All asbestos cement pipe shall be embedded and blinded over with not less th~n ""411 belcw & 411 Ðbove the barre1 of pip~ with select IIhðuled-in" cushion sand. Material· from the trench will not b~ used for cushion sand unles~ the Contractor furnishes suItable reports from an tnd~- pendent 1aborðtory showing that it has proper qualities. PAGE 58 (2) Item Trenchinq ðnd Bûckfi11 All ~ost iron or steel cy1indcr concrete pipe 1ðid on rock or in c1~y müteri~1 with P.I. of 20 or grcûtcr sha11 be em- bedded and b1ind~d ov.zr with not less thùn 411 bclow ând 4Jt ûbove bÐrrc1 'of pipe with select "Hùuled-inll cushion sand. e (3) ~5t iro~r steel cy1inder concrete pipe 1did through moteri~ls of P.I. 1ess thÐn 20 which grÐnutatc or crumb1e to pé3rticles 1ess th~n III in size may be b1indcd ûnd back- fillcd with the nùtivc mûteri~1 unless some other condition is found that would be dctrimcntûl to this instð11ûtion. Embedding ûnd blinding must be not less thðn 411 bclCM ùnd 411 übove barrcl of pipe. (4) All C1ÐY or other sewer pipe sh~11 be blinded ênd bùck- fitled with native mðterial where the CXCDvDtcd m~teriQ1 is good eûrth free from rock, broken concrete, broken pavement or other Jumpy mùtcriÐI lÐrgcr thðn 1" in the greûtcst dimension. The pipe shûl1 be blinded by cûrcfu11y p1ðcing by hand, ~nd h~nd or mechûnic~11y tamping Jayers to û h~ight twelve (12'1) inches ùbovc the pipe. e (B) After initiðl blinding-over h~s been accomp1ished ûS specified ûbovc, the remainder of the backfill sh~11 be plÐccd nnd treated depending upon the locûtion of the trench ûs follows: . (1) Where trenches Drc locÐted in open or undeveloped land, ~nd in 1nnd which h~s not been p1Ðnned or ptûtted ðnd submitted for review by the City P1~nning Co~m¡ssion or City Council. bùckfi11 ShD11 be added to the trench to bring it up to nûtura1 ground l~vc1. The ditch sh~11 then be allowed to s~ttlc with ãdditionûl fi11 m~tcri~l ðcldcd from time to time as nÐtur~1 settlement is ûccomplishcd Ðnd until al1 backfil1 hû5 stêbi 1 ;zed or the period of mt:3intenûnce ðS prcscr,ibed for the project hùs expired.. I (2) Where trenches ðre 1oc~ted in land for which a prc1iminnry plòn hðS been or is being presented to the City P1~nning Commission or City Council, the bûckfi11 shÐl1 be jetted until û11 settlement h~s been ccûsed. Jets shû11 be used ût not over six ,(6) foot spðcing and on ûltcrn~te sides of the trench. After jetting Ðnd prior to Dny street con- struction in the ~reQ p1ùnncd, the ditchcs shal1 be thor~ oughly ''walked inll by tracked machinery ë:1nd ¿Jny sett1cment corrected by ùddition of mðtcri~1 up to ground level. (3) Where trenches ðrc locðted in ùrCðS dcdicDtcd ûS streets in Ð pl~t which is fi1ed of rccordt these trenchcs,shð11 be b~ckfi11ed with' select mûtcriû1 from trench cxcûvation and this bùckfil1 shall be hðnd or mcchanic~11y tamped in not morc thûn six (611) inch layers or hydrù-t~mped to minimum 90% density. If the m~teri~1 is dry~ ~nd if so instruct~J the Contr¿)ctor shûl1 moisten the b¿)c.kfil1 mõteriDl in order ~o obtðin sùtisfùctory compG~tion. (4) Where trenches are locDted in existing paved streets, al1 excòvatcd mùteriû1 shù11 be removed from the site and the fu11 trench ~bove initiù1 embe~nt fillcd with crushed stone or other ûpprovcd grðnular mðteri01 of ð n~turc th~t e PAJ~ 5S' ITEH ~ATER DISTRIBUTION SYSTEM : ~ f; . -.A' 1. Description. . . This item covers the mater·ial and labor'required for the construction of the water distribution system, or extensions to the existing system asshbwn on the plans. Included are all mains, laterals, valves, valve b~es and appurtenances unless specif'ical1y covered by separate specification item~ , . t . ~ . '. ~aSé:rvicc Connectio~sll,. "RaÚroad and Highway Crossings" and other"¡ ....... specia1 devices and s¡tuat¡~ns witl be covered by sep~rate items. . . .. .. . ... ..... .._"," . .:..... . :";~ .-.,þ. ._~.~:t_ . I " ' . d '. .' . .-This spcc1fi.cation item maybe amench:;dor' ad.apÚ:d.to the partlcularn , ... project by the I·Special Provisionstl, . .." ....... .- .... .,.~ '. ~ .... .. ". I . : ~ I 2. Excaveti,ons 2nd.Backfil1inq~ AU trenching and backfill shan be accomp1ished'in'confórm?-tywith the specification item, 'rrrenching and Backfi l1n, and the costs 'of furnishing and placing cushion sand or. other embedment ·material as required in Section 16 of the 'rrrenching and'.Backfil1.· -Item shall be'inc1uded in the·instat.1ed price of each size and type,of pipe un1ess' specifical1y' provided otherwise In the 'JSpecial. Provisions" an~:~'IPtoposall'¿ , 3. Se'lc'ttion of· PiQe ,Tvpe. A11 buried distribution system pipe used on this project shall be Cast Iron, Asbestos Cement. or Copper suitab1e for working pressure of at least 150 . p.s.i., unless otherwise provided in the "Speciat Provisionsu or shown on the plans. The selection of pipe type for any given situation shall be 'governed as follows: . . (a) All service 1 ines 2" an'd smaller sha11 be Type I'KtJ copper. / (b) A11 distribution mains sma11er than nominal 61' 1.0. sha11 be , ~cast iron and if smÐ11er tha'n 4" joint 1cngths shall not exceed . .,,'):;:;:,12 ..feet,·nor. shpl1 wan thickness be less than 0.25". '. . , ~ ') ,. .. 1 . 1" ,j (c) . '. . All distribution maIns from ncminû1611 I.D." to'12u:'I.D. r~usiv~ shêtl r be. either cast ¡ ron or 'asbestos c'emen at -Contractorls option, wit}; e type se ected .t~::.be~·~_~tated in the Proposa1. . "r"':b:' . , ., , -' ..; ! ,"' f , ~'" :!. "... ; ! . , , ., ~.. . ) ...l : (d) Pipe larger. than nomina1 1211 '~D.. wil1 be of type,':selectad by' - the City based upon· the individuat circumstancés"'~of' the· par~lc:- u1ar job, . involved. ")-i~ ;~.;" Galva : ~ tee1) p1astic or other specia1 types of pipe sha11 be ,¿Ised only ~~~n ~ificé]l1y .approved and provide on e pans or 10 e pec,al,. Prov¡s¡o~sfl. ¡~h~re more tnan one class of pipe is required» 'the location of the var i ous C 1 asses, :~-'i11 be shCMn on the p 1 ans. . , ~ (; ~ ~. PAGE 62 Item Water Distribution Syst~ 4,,_ ·4.1 Copper Pipe shall be cold drawn seamless pipe and it shall con- form with A.S.T.N. Class IIAII. Spe · ·cation and U.S. Government Type ilK" Specifi- cation and U.S. .IIK" pecificationsWW-T-799. Materials Specifications. 4. form to AWWA C1 or CIOB-62 as furt Pi en sizes smaller than 311 nominal 1.0. shall con- sizes 3u 1.0. and larger shall conform to AWWACI06-62 r excepted herein. ' . All Cast Iron Pip hall have standard thickness cement mortar :linin9 in accordance wi AWW -64 and shall be coated outside with AWWA standard. b i tumi nous ~oa ti . ' .. . .' ~ .' . Cast Iron Pipe ay be manufactured with metal havingtensilstrength of 18,000 p.s.i. and mo us of rupture of 40,000 p.s.i. or the pipe' may be man- ufactured . aving a tensil strength of 21,000 p.s.i~ and modulus of rup- ture of 45~OOO p.s.i.. Thi~kness of the pipe shall be not less than is required for'an internal working pressure of 150 p.s.i. and for installation with 3~ ft. of cover :: in trench condition "A", flat bottom trench with un-tamped backfill, computed in. ". accordance with A.S.A. A 21.1-1957, IINanual For The Computation of Strength and Thickness of Cast Iron Pipe", nor shall. the thickness be less than.the minimum thickness tabulated as follows: _ Dia~~ter of Pipe 'fInch) 4 ,:. 6 8 10 . ., 12 .. 14 ' 16 18 Min. Wall 18/40 C. I ." 0.35 0.38 0.41 0.44 0.48 0.55 0.58 0.63 Thickness-Inch 21/45 C.I. 0.35 0.35 0.38 0.41 0.44 0.51 0.54 0.58 Cast iron pipe joints shall conform to AWWA Ctll-64 and may be either"Mechanical JointU or IIPush Onll type at on ctor's option unless specifically stated other- wi se in· the Spec· , · · ~.3 Asbestos Cement Pi e shall conform to AWHA C400-64T as herein excepted or urther clarified. An fidavit of compliance shall be furnished in accordance wit · ~ standard. Pipe class shall be for a working pressure not less than 200 p.s.i. for 6" pipe and be in standard 10 ft. or 13 ft. lengths. 8" and larger piþe shall be for a working pressure not less than 150 p.s.i. and be in standard 13 ft. lengths with 10% permissible shorter·random lengths allowed as per AWWA standards. . . . Asbestos-cement pipe couplings shall include an asbestos-cement sleeve, of ~ e same composition as the pipe, and two rubber rings. The couplings shall be machined so as to insure a tight,joint with the pipe. The rubber rings used to .seal the joints shall conform to the requirements of the latest revision of ASTM 0 1869. Page 63 ~ Water Distribution System 4.4 Fittin for Cast Iron nd,Asbestos cement~ater Distributio~ ~ shall be cast iron conforming tyÁ\1\/A 110-64 desi rtê'd for a "'lorking pres e of not less than 150 p.$.i. nor ešs than the · pressure of the pipe in wh,ch they are instal1eci. All flings shall have ÞM\lA standard bituminous outside .coatings and~ cement-mortar 1¡oings.. Fittings for direct burial underground shall have mechanical joints and where such buried fittings cannot feasibly be restrained by concrete blocking they shall be equipped with retainer glands or tic rods to prevent joint separa- tion. Fittings installed in exposed locations shall have joints flanged with ASA 125 lb. flanges unless noted otherwise, or if installed with pipe rated great- er than 150 p.s.i. working pressure, flanges shall be rated equal to or greater than the design working pressure of the pipe. Gaskets shall be I'Rainb~Jtlt "Durable Garlockll, or approved equal. Gaskets eight (8") inch diameter and smaller shall be 1/16" thick; over eight (8") inch diameter shall be 3/3211 thick unless specifically required otherwise by in- dividual job requjrcm~nts. Dolts shall have American Standard Heavy Unfinished Hexagonal Heads and the nuts shalf be American Standard Heavy Unfinished Hexagonal dimensions all as specified in American Standard for \lrench Head Bolts and Nuts and Hrench Open- ings (A.S.A. B 12.2-1941). All bolts or bolt-studs, if used, anà all nuts shall be threaded in ~ccordance with American Stanàard or Screw Threads (A.S.^. B1.1- 1935») Coarse-Thrca¿ Series Class 2 Fit. 4.5 Gate Valves shall open by turning left (counter clockwise) and all valves installed underqround in the distribution system shall be mechanical joint. double disc, parðll~l seat type, and shall be iron body, bronze mounted; designed for 200 p.s.i. working pressure, L~OO p.s.i. test pressure in sizes 2" through 12"; and 150 p.s.i. working pressure, 300 p.s.i. test pressure in sizes 14" through 1:·311. In addition to the above general requirements, gate valves shall be designed so that when closing or opening the valve, the discs move freely with the wedging mechznism in a collapsed position, thus climin~tjng abrasive action between the seat rings and the disc rings. To climinate deflection of the vz1ve discs, seating force rcsu1ting from the wedging mecnenism shall be applied equally and at four separate contact points on the back side of each disc. All gate valves shall be equipped with "0" ring type packing. Lubri- cation of the thrust collar shall be accomplished by means of a special lubricant sealcd between two IIOts rings. 'Seat rings shall be screwed into the valve body. The disc rings shall be pressed or rolled into the discs in an approved manner. Both seat rings and disc rings shall be of bronze and shall make an absolutely watertight joint. The threads on the bronze stem shall be Acme threads. The stem for PAGE 64 Item Water Distribution System .ves, size 16" and smat1er, shall be made from rolled bronze rod with the col1ar med by a forging operation. Stems for valve5 1811 and larger may be made from rod or casting. All iron castings; bonnet, body, discs, etc., shall be made from a superior quality of iron. Iron shal1 be tough and of even grain and shall possess a trensile strength of n~t 1ess than 31,000 p.s.i. A11 bronze castings, except the stem,sha11 have a tensi1e strength of not 1ess" than 30,000 p.s.i. All stems shall be made from bronze having a tensile strength of not Jess than 601000 p.s.i. In addition to the detailed specifications, above, all gate valves furnished for underground insta11ation shall comply in a11 respects to the American ~Jater \lorks Specifications, .and sha11 be Mueller or approved equa1. Valve keys shall be furnished only if specifica11y ca11cd for in the "Specia1 Provisions" or "Proposa1". Valves installed in exposed locations shal1 gcnera11y comply with the above requirements, except wi~h flanged jo;nts and other specia1 details as shown on the plans or in the Special Provisions. 4.6 Boxes For Gate Và1ves shall be furnished and installed on a11 valves as shOYm on details inc1uded herein. Adj"ustmcnt to fina1 grade and pour- ing concrete base b10ck where required shall be included in the price bid for 'ilves and boxes. L~.7 Fire Hydrants shall be of proper length for 3611 cover on mains unless specif"icaJly shown otherwise and shall have one (1) 4tlt pumper nozz1e and two (2) 2-!1t hose nozzcts, national std. threads. Fire hydrants shal1 open counter c10ckwisc and shall be manufactured in strict compliance with the latest specifi- cations ~s approved by the American \aJater \/orks Association. In addt~ionJ other design features, as listed bclow shall be incorporated 'in the manufacture of the fire hydrants furnished under these specifications: (a) Fire hydrants shall be of the compression type which close with the pressure and shal1 be so designed as to provide for two drain ports that are an integra1 part of the main valve assembly and work automatically when the hydrant is operated. The main valve shall remain closed without 10ss of water in the event of a traffic accident. Hydrants shall have 5~1/411 V.D. (b) Fire hydrants shall be provided with a safety flange assembly, located at a point approximately 211 above the ground tine, and shall consist of a two piece stem and barre1 and designed so- as to assure no breakage or damage to either the stem or upper or lower barrc1 in the event of being accidentally struck by a vehicle. e (c) Hydrants shall-be. of the dry top design with all working parts and operating threads sca1ed away from the water in either the open or c 10scd pos t t ion. 110" ring sea I pack i ng sha 11 be used ... PAGE 65 Item W~tûr Distribution Systc~ service connections as covered by separate detailed specifications. Ho other types of small dìÐmetcr pipes and fittin9s will be used in the system except with specific approvû.l.of. the individuûl instûl1ation. 5. Construction Hethods shðll be as set forth followin9 herein and in event Q situôtion occurst not covered by this specification. th~ requirements set forth in AH\.f:\ Standards a600-5L~T, IIlnstûl1ation of Cast Iron \-later mains" and 6603-6l:r, "Installation of Asbestos-Cement \.later Pi:,e" shalt govern. 5. 1 RecSJ.y i n9) Un load ì .."....l..-ª!ld __ P J~J.r i bu t i on of ¡'\û te r ì û 1 5 : A 11 pipe, speciûl castings, gate valves, fire hydrûnts, and oth8r fittings may be delivered by th8 Contractor on sidings or teùm tn-;cks at avûi1.ûblc points, éìS near the work as prÐcticable. Should switching charges be lawfulty demanded ~y the rai lro~ds, the Contrûctor will pûy ôny such charges incurred. All pipe, special castings, gate valves, valve stems, etc., shall be carefully examined by the Contractor before unloading, and the attention of the Engineer and the Agent of the Railroad called to breûks, cracks, or other d~fùcts. A certificat~ of acknowledgement of defects, where such defects are cûused by transportðtion, û receipt signed by the A0ent of the Railroad with Ðuthorizûtion to do so, shûl1 be tÐken by the Contrë.1ctor. r~11 mðtcri<::ls shÐ11 be unloaded Ðt the Contrðctor1s risk. All pipe, special cnstinss, gðte v~lves and fire hydrants shalt bc 1 ifted by tÐcklc not skidded or dumped off cars and trucks. I!o dumping or other rough hë:Hìcll i ng wi 11 be pc rmi ttcd. ^11 pipe ðnd other materiol snalt Go transported to site of trench ond distributed in such mann~r ~s to be convenient for l~ying ~nd p1ðced in such û manner as to ~fford ûS little jnconvcni~ncc to the public as possibic. Cost of unloÐding, trûnsporting, truckin~ û~d distribution of mûteriÐls shðl1 be included in the unit prices bid for mûtaricl in plDce, it b~ins intended that no sepûrûtc price be PQid for any unloading, trûn~?ortin9 or distribution Df m¡)tcriô\. 5.2 Pipe Lavin:;: [.11 pip,~,castings, vLJlves and fire hydrants shaH be' thoroughly cleaned of ðl1 dirt <::nc1 trûsh before lo"'/~rin9 into the trench. Pipe and ûppurtenance5 shû1l be lowered into the trench by d~rrickJ crûne, side boom or other means cQpa~le of complctely liftins the pipe: -- - not dumped or rol1ed in by ropes. ßefore lowering, ûnd preferably while suspended, pipe shall be rung 'rJÏth Ð 1 isht hemmcr to detect crwcks or fl~s <:md shûll be carcfui 1y eXûf!1incd to see tnDt the inside of the pipe is clecn. After lowering in the trench ûnd before "stôbbing homell, the interior Ðnd outside of the pipe joint shôl1 Ðg<:lÎn be cleaned of any dirt, mud, or other foreign li1<1tter. Each joint of pipe shLJll b53 sw~bbe.d whi1ùsuspcndcd in ûir. During the process of sterilization of the instôlled pipe, as specified herein, should the newly installed lines produce excessive mud or other fore:ign m~tter or rêil to produce the Cûtcu1atcd discharge qu~ntity the Contractor shatl pay the full cost of such cleaning, r0moving sections of pipe for inspection or instðl1ing c1c~nouts ðS mdY be required to correct the si~u~tion. PAGE 67 . .