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3.0.0-16 .~. e .~. ~. ! ~. -- . ! ' I ' - I~ ~ - I- I ,I, 1- -- ( ',- \ '. . {I- ~. [1,_- . I, -~ , '; The co~pleted watermain'system shall;be tested for electrical conduc~ivit.y according t.o that. stat.ed in 'testil)9 in t.bese specificati,ons.. . , 303.900 Xnsu~a~ion ,- The insulation shall ~e placed ~etween the storm sewer or storm sewer structure and 'the watermain or service pipe. The insula- tion shall be placed in two layers, ,aoh layer two inohes (2") thiQk, wi th the :) oint. in t~e upper layer, offset 1/2 board width from the lower layer. The insulatio~ shall be held in'place to prevent movement durinqbackfill by 1/4 inch dtameter by six- inch (6") 10n; wood dowels driven through each corner of the insulation boards into the soil below. The insula~ion shall extend a minimum of four feet (4') from the oenterline of the watermain or service, and a minimum of aix:feet (6') beyond the edqe of the storm sewer or structure~alonq the centerline of the watermain or service. The actual depth, thickness, width and lenqth to be insulated Shall be dete~ined-~n the field by ~he ENGINEER or his representative or as\noted in the plans. 3.04 . 000 M}:THODS 0' ~i:$7'ING AJiP DISINF~CTION :' The CONTRACTOR shall perform all _testing and disinfectinq in 'the ENGINEER' a presence. '- 304,.100 J..eakll'q~ T~$t '{9r w~t.rmains . \, ~ i A leakage t.est: shall ))e perfo~ed on--each valved seot.ion of waterma'in 'to dete'rmine the qUantity qf- water that. Jnust be supplied into each section to mainta~n a, test pressure of 150 , pbunds'per square inch, after 'the te.t se~tion has 'b~en slowly filled v1th water and all the air has beeneXpelled:~rom the line. The speoified pressure,'shall be applied- and ,sufflclent water shall be measured andSul'plied-~inti:) the, pipe_ seotion -to- maintain the pressure for a te.~ dur.tion of,twohou~s (2 hra.). L- 1m2 . 3,700 " <; < " L -:Maxi.um permissible leakage-in 9~11ons per hour. , . N- Number of joints in length, of pipe tested. , _D - Nominal diameter of pipe in,inoh~s. - P . Averaqe test pressure durinq'the;['tes1:,' in pounds per square inch, qauge'pressure. .- If the pipe section'un~er test conta~s pipe of various dia1leters, the, ,allowable leaka~ewilJ( be the ,um- of the- computed leakage for .each size- of :)oJ;'nt.' ., ''>' .' , " ~1 "t ", ~'- ,,' ". ': I~~ IttI:~\(~ '. " i .