HomeMy WebLinkAboutS-145102Pa2T TWO - UT32ILLB PUT TRR - CO SITUCTION
3-E Gmam 1 -1 colt "L 3 -14 TESTING OT PRESSURE l;NWER PIPS
All materials and equipment shall be Sew end workmanship and materials than Standard flat slab towers Tor shall- manholes $ball be a tlaitw of 8 The Developer and the Contractor shall comply with all of the requirements Ad) astaent to the lie and grade shall be door by scraping away or tilling In areas such As existing paving, or in areas to be paved, where the All force sainr shall be ttcted at a minimum pressure of at least 50 percent
be of land quality. III material inearporaced into the work $bell cotton inches thick sad shall eastern to the enter diansiao of the standard of this Part I* the Performance of the work. All work shall be performed by to sod tasping beddisq mortal Seder the body of the pipe. No wedging or District, determines that miaor settlement would be detrimental and the above the design operating pressure for at 1e t 30 minutes. Leakage shall
to the provisions of this pert. All references to Specifications shall be Steel— upon which they are to be placed. The 34 inch diameter opening adequately skilled persons and in a good Sod workmanlike assume. kII blocking of the BIDS for adjustment to tine and grade mar be Sou *. native excavated material is not suitable for compaction as backfill, the not exceed the anount given by the following formula:
of the latest edition. $ball be eccentrically located as chew em the Standard Plans so as to Specified depths shall be compacted depths. trench shall be backfilted rttb Imported btekfill material as specified in p0 p
provide at least 6 inches m&atua radial distance from edC* of the 24 inch 1 -2 TRIG EECATAPION The pipe shall be Instead into in* truck by Mans of ropes, tripod, crane Section 2-7. The District say require that a blanket of imported backfill L 1,854
2 -2 "TRIAL LIST[ AND SpscrFICATIONE opening to outer edge of the slab, bet Mt more the& 2-1/4 Loch.. eft "set Truckes shall be excavated to the line and grade designated by the or may other suitable Mass, shall met be dropped of handled roughly, and material be used an top of native as, trial to such a depth as the District where: L - is allowable leakage in gallons per hour
I%* Developer or his Contractor shall deliver to the Engineer a material distance tram the edge of the 24 lath opening to the inside face of the District, males- otherwise specified, trench sides shall be excavated sbell be eteeke4 ter oath mod defats prior to tutallatir. Any cracked may direct. In such cases, the top of the nati7t material shall be leveled N - is tae amber of Dirt joints
D - is the Dept pressure in inches
list sot Item than ten 1301 daps Drier to eomaeactsoat of the eomatroction. standard seetiue helon. Reinforcing shall he shews ON the Standard Plans. e.rtically. Trench widths shall be adequate for proper working space and of dr[eetive Pipe shall sot be i$Csl1nd- after placement to provide for uniform depth of the imported haekfilE P - is the test pressure in Dal
The list shall contain the maufact•rer and nodal summer, it applicable, of
placement of bidding material under mad around the pipe. The ereocA width material.
the material and equipment to be in IIA4 as a part of the tort se that the Atd.etions to 24 inch- shell be made by asses of flat slab, for shall- from the bottom of the trench to 4" above roe crown of the pipe shall not Tees, ayes and standing Services shall Be installed .s Shaw Ln the Standard
Engineer sty determine whether such materials confon to the Plus sad manholes, or as met -uric protest come for sceodard manhole., reducing exceed 40 inches for 15 inch diat;'-ter and smaller pipe, or 1.5 times the Details herein sad at such locations as sae shown on the Plane or a$ 3-13 COMPACTION Of BICSFILL 3 -17 6 -INCH un smut I'm "IO TO ritoPRTT LINE
Specifications. go materials shall be installed as a part of the work Web stet&-$ A$ $bow oa the Staudard Plans. Last&* diameter of It inch or larger pipe, plus 18 inches. It these widths otherwise directed by the District, and $ball set be covered until the The hand placed select material of 6 inches shall be placed and be compacted The strength class of side serer plot shall be the nu. as the serer pip. to
are not included in the material list. are ez<raded, a stronger grade Of .pips .red /or a high., elasitieatioo Rao District has Completed Inspection *24 recorded their Asset location. in the manner specified in Section 7 -12. In al£ events, compaction of vnice it connects and those sD<cilieatro$ shall be applicable to side serer
C) Gales.ired Del.rmed Bat Steps _ Intent of bed4iap material shall be furnished. a directed by the District. backf[ll and backfill proced ... a in public rfghts-nf-ray shall, at the work. The slope of aids severe shall not exceed 2 -loot vertical to 1 -font
The manufaetur <r's technical specifications for pipe, appurtenances and Cal -sized deformed her steps shall be i inch dimaecer deformed b- variam<e tree established it" and oredt *ball met be greeter thou 1/32.4 at minim", conform to the requirements of the I...rmasmtat agency bowing horizontal and grade shall not be leas than 2 percent. When chap* L. slope
equipment to be incorporated into the much shall be submitted to the conforming to A3711 1-61S, grade 40 Or Grade 60, bet best and galvanised Excavation for saaholes or ether structure$ shall be suffici..t t. provide I an inch of Dipe diuota, bet shalt alt exceed 1/2 inch of result in s level jurisdiction thereof. exceeda 2 inches per foot, standard 118 bends shall be used , _l: side
Engineer at lout hen (10) days prior to Comsencemaet of Construction with after ►ending. Par handle@, the temperature shall be at last 1,600 ingress almisw Of 12 inches between their outer surface. and the sides of the or river,# eloping tmeert, variation to the 141art elevation between eery. shall be #lugged and plugs blocked.
the materials listed. P. Caltenitted small Conform to ASSN A -12). Step dimensions sad potters excavation. adjoining ends of pipe do- to sea- enneM'r }.sty of joining Duties. and pipe bockti /ling shall be c- ;apact*d to 95 percent of maxima. theoretical density
.bell cueform to the Standard Plus. interior surfaces shall not Axe of 1 /64tb of an lab per inch of pipe !n 41L ass# when paving will be placed Deer the bxekfilt or shoulder a... The ends of all side cerera at the property lines shall be Narked with a
2 -I SUARANTR BY 11W1Ci0RR All material excavated from trenches, and piled adjacent to the trench, diameter or 1/2 tub to 8.1 "e.g. and to 90 portent of maximum theoretical density in all other areas. vertical 2" x 4" board, the bottom of which shall to located at tht thwart
If requested by the District or the Engineer, a written q¢arabee Wade by the (a) Ladders Shall be placed and maintained to that the top of the material is at least 2 3 -10 pits JOINTS Meaursmat of compaction density shall be by the modified SASSO marked. of the and of the aide steer and the top of which shall be painted white and
manufacturer or may materials to be incorporated Leto the work shall be Precut manhele base Metioma mere this three toot in height $ball be feet true the edge of the trench. Enervated mstart&: shall be located so No joists shall be covered ehtil examined end spirfov "4 by the District, extend 4 feet above the ground with the length of tot board painted [hereon,
furnished, guaranteeing to the District that such materials Shall conform to Provided with a ladder AN detailed ue tb* Standard Plans. Ladders shall AN that free access is provided to All fire hydrants, water valves and matters Only pipe layers experienced airs the type of gasket bsi$p used in the work Compaction of backfill shelf be Achieved by power operated tapers; roller
these Specifications . and the Specificatioma otherwise applying to the Dark. -40 at Steel galvanised after fabrication. and other utilities and clearance .hall be left to *Dahl* tree flow of storm $ball be allowed to lay plps. 04 the rates at of the District, proof .t such
vlbrsttc„ equipment or other uehanitel mesnA. Water $.ftlfap will not be 7 -18 CONNECTION 70 T!7 RE187ING EY]7R
2 -7 IIOORM llaccri L " TRIAL rater in all gutters, Conduits and natural rater courses. All asphalt and ..Pariasbe -bell be furnished he/ass ltyisq My India,
aeseptoLle as asane of compaction. I! excavated ubesiat has • California No <o*seetio*s shall be s•Jr to the existing aver sYSvem without the
2 -4 nnl tm AND APMRTCINM. INIPtRRtRS Imported backfill "tort&) i all be ![es iron rood, bark. Stott or other co.cr#ts shall be saw cut.
Bearing Ratio for ee*Oaered and soaked aseDle of lm$A than T, of tot any Dreance of the District. Yrltkta Application for con•.*cti as shall be ape
Non - pressure Sesett pipe .hall be FTC pipe coetaraing to SETS D -3034 for depths of extramul, material and shat. AMC the following requirements: Joint material shall be installed - cording to the saufactorer's *that reason in the judgment Of the District Cannot be .."94ct*d a to the District for <o¢n..tion, and the conaectioo shall be made at a ties
cover up to 12 feet; and Ductile IM pipe. Class $0. Cement lined conforming to U.S. Standard ?.,-at Pasting 3-1 TfRR2NG AND BEQ7'in recommendation. Alter the gasket has bats affixed, pipe shall be handled Specified, such excavated material Shall be replaced with imported backfill massed upon with the District.
ILEA Standard C -151 and C -104 for depths of Cover escesdieg 1.2 lent and slope over 151. Steve Site _ay Weight The Developer shall provide and install timbering and abetting as necessary to avoid beeping Sbe gasket, woukip not of petition ar leading it with material.
All pipe joistm shall be rubber - uteted and M mortar 3otati Shall be wed 2-1/2" $qu v* Opening loo to protect workmen, the work, mad existing buildings, utilities and other dirt or other foreign material. Any #"Rat me dinerbed shall be removed, Connections to ezistinq - .holes shall be sad* as follows: If the saabol•
except tar Haling pipes Leto manholes. 1/4" Sieve 25 Rift. properties, and shall meet all OSIA and WISMA requirements. replaced, clamed And tvlobriwted before the joist to ads, will re pe g is "live," the manhole channel shall be ti
No. 200 10 Max. The i Hall be e The District qulra that the services o[ an rode ndest testing o Atly eevsred [o prevent d<bri.
pipe properly aligned before tot joist is forced home. During laboratory or County testing laboratory be employed to perform in -place f ose entering the a, aer line pi' r breaking into the manhole wall.
PVC $ -er ifie is enLimed as flexible copdutt. Joists Shall cuet.n ft A• ° -A .gar :lw -t 75 Nia. .,^m,_"._...s - -___ - _._ __ .�.. "� _ "s__�Qo�r. _ _. .. ______��_.,, no- v
-, --_. - -. - - "'"'.- - "r'°` •" "'^" - -- - °- .` -' "° -- `-- `- ". -w'i`- »` "r."" - .` °r °' ='° 'r density teats - to ascertain whether the specified density can be or has been le."rateiy alter zuu c —union so- sad., c - ew pip: �tii be ,Toss" and
3212 Ming a restraimed rubber gasket Conforming to A= F -477. Fittings shall All work shall be done to conformance with the reqmlrsmests of the agency is band. ,lime or tram a requited to *inlets# lateral pressure ue the gasket blacked in such a sager that no
be injection molded tees or factory Solvent w61ded saddle tees. Saddles tutened 2 -2 TRIM FOUNDATION "TRIAL obtained, and the cost thereat shall be bozo. by the Developer. water shall enter into the District.
control of the lRCittty :0100 bared or jacked. See Roadway and Railway end to uieeetm <uetent[icity wail eke gasket is Property petitioned. ►ipe manhole. The ylng shall not be removed without peraiasion of the District.
to pipe with external buds are not acceptable om any us system. Over-eztewated material shall he replaced with trench foundation material Croeeiogs for further details. deflection aed straighte$as Shall be avoided them the joist is bone, to _ _ _ if the exist" manhole is not "live," a plug shall be installed in the
Conforming to one of the following gradations •$ specitiedt preeent creep a1 tte joint. testing, A ce the a by the Dt District atmother th Developer :..---- -w....:. o, existing
j testing, acceDtonn by the Oietrict Cr otherwise, the bevelaper shall repair downstream or dis<barpe pipe of the existing manhole is addition to the
Ductile Iran pipe is defined as rigid conduit. Mechanical or push-an joints Clue •A• QUL : 3•6 ROADWAY AND RAILWAY Cloniff" any settlement of trenches and excavations that may attar .1thin one year above• Where new connections to existing manholes require an outside drop.
shall Cgmforo to kVIMA Standard C -110. U.S. Standard Si.,r St. ALL. 1111, da8a a& Any method may be used for roadway or railway crossings which provides !or Sulficl*ht Pressure shall be applied to sakiftg the joint to assure that the After compaction and accertance of the Sort by the District. two plugs for each drop shall be installed and blocked.
2 -112" square opening 9st foot 9% 100% satisfactory results and Is acceptable to both the District sod its joist is bast . n d.tised in the pipe manufacturer's standard Instruction
7 -14 CLiNIMG AND FLUBBING
2-5 Sam PIPS An APPRTl4YNCR, PulsURE 2" square *".tog 92 100 7S loo governmental or private agency baying control of the read of track, provided for i$tallitiob. Sufficient restraint shell be appli.. to the line to
Prinz to pipe testing, all pips small be clewed a provided in this Connections to existing manholes small be made as follows: A new manhole
Unless otherwise Specified, pressure pipe shall be constructed of: 1 -3/2" $.acre O)*also 12 87 33 60 that the road or track shall be restored to its origia4l oenditio4 after the assure tse joists, Once hose, an hold so by imaging fill under and section. An inflatable ball furnished by the Contractor of a size that rill shall be placed over the existing line. The manhole shall be precast, 54-
(a) Ductile Iron pipe ceinfonimg to AREA C -151 with a sanufactorer's thin cannot 1 -1 /4" -guars opening 5A 75 0 15 grassing Lo completed. If tunneling or jacking is elated or required for alongside the pipe or other apprpriato Mans. At the end of the day's inflate to fit snugly into the pipe shall roe placed in the last manhole on inch diameter except that the base slab shall be cat in place. Thom new
liming conforming to AWEA C -104 4rzerpt as to thickness) and vIth the type 3/4" aqua,. P.Mao 27 47 0 1 crossings, steel, cast iron or concrete Pips coding shall be placed And the work, tke last pipe laid shall be blocked in such a maa$r as may be the DLDe to be cleaned. The ball may be used with a tag It- or a rope may - onnection shall be plugged and blocked and the Snaring sever Dip. shall
of joint, class, thickness, designscias and markings a specified. 3/8" aqua[. opening 7 Id 0 0 serer pipe laid within the casing. For District Standards for baring at r<qu&red to prevent creep daring downtLM, be fastens, to the ball to locate and control its position at all times. Dot be opened without the permission of the District.
ib) Cast Iron fittings shall be rubber- gadeted and shall conform to ANSI .-110 So. 4 sieve 0 1 0 0. tugeling ... Shut "Pater or Sewer Casing Detail" or separate $Beat.
Water shall be introduced behind the ball and the hell shall vas through
and C -111. valve shall comfore to IWWA Specification C -Soo. 3-11 NlA0LL5 the pipe with only the force of the water impelling it. All debris flushed Connections of aide ..rats to a exiting ae._. line shall be made a
2-6 11311101,1111 3-6 TRIXCN FOUNDATION Pretest manhole base sections shall be placed on a well- capseted bedding &Aead of the ball shall be moved at the first manhole where Doses,• of follows: The coven tfo. $bell be made with a cast iron, double strap utor
(a) Rubel. Texaco and Covers 2 -9 BIDDING "TRIAL If, Lm the judgesDat of the District; will plan < .- , vs— :w sites —o-.h of the `•rddiAS ,:or11 a 'esta the s ci e i oun C e a
the debris i$ noted. Yo event that cemented or wedged debti• ^- •_raged ., iw� as u-- set " -.," by the Olympic P dry ^s�.Ay. Th existing
Cast Iron !rases and covers shall conform to the Olympic Foundry Company We. a firs bast for the subsequent placement of bedding, pipe and backfill, such 4 inches thick, a [ending a minimum of 12 inches beyond the outside pipe shall slop the ball, the obstruction shall be removed. sewer pipe shall be cut or drilled to give a atooth symmetrical opening of
59 43, lid style B or equivalent. Coatings shall conform to the requirea+nrs Budding material shall be well- QSAOed, civ", Qr*4ular material, Dative trench bottom say be used it the bottom is leveled and smoothed so perimeter of the bas# section. The balance of any remaining excavated area
of AM Adm. class 30 and shall be free of pow sity shrink cavities, cold the eteDpa size. Each connection shall ae bedded with a 4 -inch barrel.
eougely know am pea gravel, o[ and and small *eel the folloninQ that the entire length at pipe will rest on a well compacted bate Yrram shall $e tilled with imported baek[ill material and wall - -sped Cn the level No flushing rater or debris shall De permitted to ester the existing sever concrete pad poured in place to the lever quadrant of t0.. pipe barrel.
shuts, o, cracks or uT surface defects which would impair service ability. req.irestats. bottems shall be over - excavated as necessary to remove all unstable soil and of tae top of the bedding before the manhole is set in place. The be44tag
Repair of defect: by welding, or by the use of "amo- th-oa" or situ law 'boiling" - such and flushing rater shall be Dumbed from the lints being elet¢ud and Unsuitable ma foundation aseerial shall be averezcavated and replaced with
U.E. Standard Pereat Passing eliminate oz 'quick" conditions t^ math a depth as to provide a shall be well -taped a' made smooth sad level to asvure uniform copra[ and disposed of a suitable location for draining fluahiap afar. bidding material.
material will nut be permitted. Cover to be aca -skid type surface And shall Sieve Size by Weiabt firm base. Over - excavated materials shall be replaced with trench support of the precast elesmnto.
have word "sewer " -, in large raised latter foundation material as Specified is Section 2 -8. Foundation notarial shall
All Litt holes and the inside an0 ont.ida tan of rubber puketed joints 7-13 TS97IW" OF NON-YtE99URt SEWER PIPE - oa:m:t:.ae T'±a ? *ae FOR 7 -19 TRAFFIC Comae ^:
A bituminous Coating shall be applied to all surfaces. . T finished cueting be placed when ordered by District. Pea Gravel: betwea precast actions shall be thoroughly ss[[*d, pointed the tilled PLEEI8L8 SERB PIPE All traffic control per the manual of Gnitora Traffic Coot col Devices,
shall be Continuous, smooth, neither brittle when Cold nor sticky <man with Mrear, and smoothed both inside and out. All non - pressure sever pipe shall be air tested. The procedures set forth and/or agency of jurisdictic-a.
-7 All flg ible pip PWC�IT in thin section shall be employed in conducting the testing. All facilities
exposed to the and shall be Strongly adbereac La the $flag. The JFIs square ope4inp 100 pipe shall be placed in bedding material of the type specified T.V. tN5 cCTIOM
A—. ng 9 All flexible
!6 sieve 0 -5 - - - -- -- - Precast -set Leta shall be placed add aligned to provide vertical sides and and personnel for conducting the [e.tiaq_ nods[ the observation of the
District shall base the right to require inspection and approval of all in Section 2 -9 (a). The bedding shall be placed it= a maim$ of 4 inch- _ 7 -20
Coatings prior to painting. Manhole rings Sad covers - ball -be $chime vertical alignment o1 ladder rungs. The completed asahale shall D< rigid, District shall be furnished by the Developer. All ea �mc and personnel Prior to inspe ante, all pipe shall be T.V. inspected. VHS vidth [ape
9 ` a below the pipe Darrel to 4 inches above the pipe as snow on the Standard ,[� of ,+:s tnspe ^[ion shall be submitted to District along with a Lanp7eted
[rue to dimension and attrti bt. to conduct the test shall De subject to the approval of the District. certified report'
rt h the Contractor. An y
finished o d on $tali surfaces so is to usare non- rocking fit in Sand: 9 Rom y y pipe or saver tar $sway a rejected
r Croon meeting 4 Detail bsreia. euddio0 material shall be warned by had under, around and Although air toting may be performed for the convenience of the contract -c ri *_h a sag which -states a standing water depth of over I/4" may be rejected
any position, sad .interchangeability. At the request . of the District, there over the pipe to the depths required for the Lull width of the trench. by the District. (as sag of over 112" in depth will be accepted).
shall be made available at the toun an
dry standup rings And standard Covers b. 3/8" square opening- 100 - Manholes see in yawed streets or other paved moss aha13 be sec t0 finished prier to backfi2ling, no pipe snail be accepted until air testa have beta
for we by inspectors in testing fit And seating. 114" square opening 90 -300 grade of the ponng and when required, the manhole free shall be tilted to performed after backfilling and compacting.
A31 rigid pip. bell be placed em bedding material of type specified is
S10 siege 40-75 Section 2 -9 ibl. The bedding shall be placed from a minimum of 4 inches conform to the grade of the paved surface.
Manholes located outside of public rights -of -way shill be equipped with a o Manholes not se[ in paved &teas shall be set at a finished grade slightly All -yen, tees ad end of Aide sever stub. shall be plugged with flexible
640 sieve 15-40 below the pipe barrel to the spring line of the pip. as show o the
hi9ber than the surrounding terrain to prevent surface rater infiltration 3oint caps or a alternate acceptable to the District and securely fastened
loathing device of such design that the covet My M readily released frM 1200 Si-e 0-35 Standard Detail. Deddeaq shall W placed it more than one Litt. The tint to vi[hstand the internal ueA[ pressure. Such the ring. All meemble part. shall be —de of non- Corrosive metals otherwise lift, to provide at least 4 inch thickens under into the system. Manholes at the mod of a line with no inflow, shall have D plugs or Caps shall he
any be spread of the pope, readily removable and their removal shall provide a socket suitable for
arranged to avoid possible binding. At ibe vela «t of the Oiacreec, there shall be placed before the yips is installed and bell be apeeed smoothly so sloped floor to drain into outflow. it there is inflow, a channel shall be `
shall be mods available at the foaadz A testin. device suitable for proving provided. Omit future atub-outs and channel to facilitate easier future making a flexible- jointed lateral connection or extension. No double plugs
/ y 4 9r ng that the pipe is uniformly supported .,once [A. barrel. SvDSequeo[ lifts of abai'. De us N.
the capacity of the Assembly to resist a 3-10 ASPBALTEC CONCRETE uplift pressure an the lid equal not more than 6 inch thickness shall be placed as show. os the Staadard hook -up, unless .ceded to clear paved road.
tad. The lacking franc sod cover shall be Metro standard
to a 20-foot b q Detail and individually eetee [o • mistmuS of 90 percent of maxima* Asphalt concrete pavement shall conform to the technical requirements of the percent naahale channel: shall be made to conform to IM gnat go4s and shall be Immediately following the pipe cleaning, the DLPe installed abell be tested
true end cover with 3 xeret -type lacking lids- density. State of Washington Standard Specifications for load and bridge Construction y brought together with well-rounded junctions. Chan with for nel aides shall be pressure air. Air shall be slowly supplied to the plugged pipe
latest edition, class B. carried up vertically to the crown elevation of the various pipes. The installation until the internal air pressure reaches 4.0 pounds par square
All manhole feu- and movers shall be identified by the acne or Symbol of Shoring to De moved, or moaeoble trench eslelds o[ boxes, shall roe located concrete shelf shall be smoothly finished with slopes to drain. Channels inch greater than the average back pressure of any grecad rater that say
the sanufa<tur:r. This ide.tifleatio. shall be to A plainly -.ibis At lent 2-1/2 pipe diameter. away tram flexible pipe it the bottom a- the
] -il TOP COURSE AND SEYBTONE "TRRIAL shall not arrow porn to less than the inside diameter of the pipe. submerge the pipe. At least CrD aiautea small be allowed for teepetah.ze
location when the true and cover is installed. In addition to the For use is the restoration of excavated are.,, Top Cour se and keystone shoring, shield or boa txteods below the top of the pipe, unless • stabilization before future procedure.
manufacturer's identification, the material shall be identified by the satisfactory means of recomolidatimq the bedding or side support material
saceri+l .hall me manufactured fro$ ledge o[ tales lack, Ds tree !rue woad, The opaingn tMOUpa which DLDe$ come into the manhole shall be cosDle :fly
following "NOV or "DUC" for nodular or ductile iron respectively. The disturbed by -baring removal Co. be demouttated.
roots, bark and other extraneous material ar.4 shall conform to the following and ticaiy rased Lull of mortar to inure watertightness. The pipe shall be acceptable if the time required in aecerda for the
manufacturer's identification and the mnterial id <ntifiutxoD *ball be
requirement.. pressure to decrease lean 7.5 to 1.5 pounds per square lath greater than the
tdjseant to each other and shall be sinxsw 113 -inch letters recessed to be In solid rocs excavation, all ledge rock, beuldeea or stones small be avers back pressure of d water that as submerge the
ware flexible conduits are mead, • utter tight joint shall be provided de pre any ground y q pipe is
flask rich the adjacent surfaces. Material Pension cent by Yei*ht rsmoved to provide a miaensm clearance of 8 inches under the pipe. All 1 to or greater than the listed values far correspoadivg sizes of pipe
I9I [sere the Dicer pas.- through the manna`. wall by utilizing a PVC manhole .qua
material thus removed shall be replaced with bedding material_
U.S. Standard Slave Size adapts. with a silica impregnated surface that is mortared into me rill. shown on [Aa air test graph located elsewhere in Part Four. 1
(bl Precast Manhole Cnep -¢rata 3 -6 GRAB LYng a
square oDaninp - 100 Pipe connection into entry couDliaq shall be sealed with o rubber [lace. ill
P[r_aw[ manhole components shall confo:m to iSTM! t -478 except as modified The Contractor shall maintain the correct grades between manholes sod $hall
3 /J" :guar: opesing 55 - 75 3 -12 BACZF11Y1NG Hazards created by use of air pressure for testing pipe shall be guarded
hotel.. check all intermediate grade stakes by means of a tat grade wire between at
U.n. Na. 40 sieve 8 - 34 SD hacktilling sell be Dtrstoned until alter the District han inspected the against, and 11 plugs shall be securely blocked to prevent blowouts. a
U.S. No. 200 steam 10 Max, least three intermediate grade Stakes. In the Asset that the grade stake• i
Base section Dpeniags to receive pipe shall be circular, tapered inward. and do not line - installation of the pipe and bidding and ayDroved bacttillirp. supply air regulator shall hem installed p on the air supply line to the sever
' up, the rock *hall De swopped until the situation a corrected. only a maximum of lO pail in the line to be tasted and all
Sad Equivalent 40 Min. � That shall penis
held to the minimum size practical to accommodate the pipe to be inserted to All bench marks, reference points and stakes shall he preserved and, in case
effectively 3 -E2 BAS[ COURSE "7REAL The iDicia2 backs ill shall be bad placed select material spread evenly over pressure shall be relieved troa the sever line prier to removal of teat
y seal the joint. Resilient ce- ectors Colfoninw to ASTM C -92J of destruction of any of then, the resulting expense of re.to,atio. Ahe!, be
ma be used a[ the Contractor's option Base course xrterra2 shall conform to the following requirements: the beddia a:t trial and compacted by hand up to m elevation of 6 inches plugs.
Y y i borne DY the Developer. Construction staking -ball consist oI grade stakes
at 30 foot shall be offset 30 teat ad located at 50 toot stations he¢raea manholes. offset.. Stake. at each ...bole and intermediate grade stakes abe,* t':e crown of the pip. for Ductile Iron pipe and 30 inches above the
Precast manhole elements shall be provided with steps and/or ladders such U.9_standard 9i.SCi&1 Pasnlnstage sin Percent by Yei*hj, .roe of the pipe for PVC. This -ball be done in such a A.Arc that When required by the Engineer, all sanitary severs constructad of flexible
that the completed manhole will contain a Continuous vortical ladder with Laser beam equipment for grade SAC alig$aut control is au aeeeptaie auD.egvent Daekf xlliap will not disturb the yiye in any way;. S.DSequent pipe shall De deflection tested not leas than 30 days after the trench
1 -112" square opening 100 lifts of no Sore than 6 tub thickayss shall be plaid as shorn on the backfill and Compaction has been completed. The test . shall be conducted by
rung. equally spaced at 12 inches heart above or tishe f, And the uppermost 5/8" square opinion; 50 - 80 alternate. - '
' rung shall D4 —[ norm [aaa 16 Inches above the shelf, mad the uppermost Standard Details and individually cueDae[ed to o siaimue of 90 Descent pulling a valid pointed mandrel With a diameter equate to 95 percent of the
reel shall be not sort the 18 inches Belo. the street surface. 1 //" equate penfng l0 - 50 / �S/ / f�
ftaxuw density. Subsequent haekf ilix ape (hall Da performed try peening
pipe diameter through the completed pipeline. Testing .Fall De Conducted on - a � - /
7 -9 fYPtLAYING material tree the and of the tream 11009 and directly over the pips so that a manhole -to- manhole basis and shall be done after the line has been
U.S. No. 40 sieve 3 - 18 Each Pips shall be laid with bells upgrade aad the invert of the pipe to the will be applied in the form o• a e011ia4 alPpe, rather than by :ompletaly flushed out with water. The Contractor will b. required, a[ his
Joint. between precast manhole elements shall be rubber assented in a manner the material U.S. Equivalent 200 nievt 7.5 Mi.. altqurat and grade Shaw o¢ the rYaaa. toadsof p joints shall be hall similar to yips joints eonfaninp to ASTM C -433. Shay drawings o2 the joint a .e Hide ;idling. Baetfillieg from the sides of the trench will not W done tzpe¢se, to locale and repair any sections failing to Da- the fret and to
design shall be sulaitted to the Engineer for approval, prior to Sand Equivalent 40 Mi.. and oath revert covered laying is o2 pipe or fittings shill De
until tat District has deterciaed that ma ±•ri al has Dean carefully placed retest the .e<tion.
temporarily blocked o[ coveted wheA 1.Yia9 Ls not to pray -ease over the pips •o a sufficient depth.
....facture. Completed joists Shall Show no visible leakage aad shall 1-13 CONCRETE BIDDING k" BLOCEING
conform to the 4i- .si ... 1 [.quit eaeat. of ISIS C -478. Bedding and blocking concrete shall be Portland cement concrete containing No rater shall be allowed to the tram during pipe laying, joint asking. _
four sacks of cement per cubic yard and a maximum aggregate sire of 3 -3/2 and as long thereafter as is necessary in the judguent of the L:strict for
tress.. Maxxnw slump $bell be 3 -1/2 the type of joint being used. MR,
- eaa�w a +sura,�s"l.er► sesame
APPROVED'
PARTS TWO AND THREE: TECHNICAL SPECIFICATIONS � °sue. __`�-� �'� WILLIAM CLARKE
I COUNTY 7831.00
SEWER�! 'RES)DE4T T3O F CCJ,?MISSIONER� DATE m�aa�m ®cwt � _
EXTENSIONS N — �� ��� °o`•r — p /•r��S° A I� E DIS 1 I�< T 7'415 129TH AVE. S.-e, EXTENSION TITLE
Addet� Para. 3 ZO /287 /✓>L:P, SECR'rTARY i RD O)�tGea0.lMiS:" "LONERS DATE ffry&�� gp.ng��p 6�qg RENTON, WASHMTON 98056 SHEET NO.
fr'N4rSed Er7fi/%e.Speclficafior7s N -A7 �3'�y;. kaf� _?_ �� , �' -�+"L/ U`R®s. ER & 107 TELEPHONE: 235 -5'200
iEPal=_R Rao. DALE APPi O CO(wNiiSSll ER DAl'E _? OF 3