Concrete Pipe & Box Culvert Installation - Shaw Precast Solutions

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water leakage. The section of pipe to be tested isplugged at each end by means of inflatable stoppers.The ends of all laterals, stubs and fittings tobe included in the test should be plugged to preventair leakage, and securely braced to prevent possibleblowout due to internal air pressure. One ofthe plugs should have an inlet tap, or other provisionfor connecting a hose to a portable air controlsource. The air equipment should consist of necessaryvalues and pressure gauges to control therate at which air flows into the test section and toenable monitoring of the air pressure within the testsection.Air is added to the test section until the internalair pressure is raised to a specified level and allowedto stabilize with the temperature of the pipewalls. The test is conducted by the pressure dropmethod, whereby, the air supply is disconnectedand the time required for the pressure to drop toa certain level is determined by means of a stopwatch.This time interval is then used to computethe rate of air loss. In applying low-pressure airtesting to sanitary sewers intended to carry fluidunder gravity conditions, several important factorsshould be understood and precautions followedduring the test:• the air test is intended to detect defects in constructionand pipe or joint damage and is notintended to be a measure of infiltration or exfiltrationleakage under service conditions, as nocorrelation has been found between air lossand water leakage.• air test criteria are presently limited to concretepipe 24 in. (600 mm) in diameter and smallerby ASTM C924 (C 924M). Additional data isrequired to confirm the safety and applicabilityAmerican Concrete Pipe Association • www.concrete-pipe.org 59
AIR TEST60American Concrete Pipe Association • www.concrete-pipe.org
Page 1 and 2:
RESOURCE NO 01-103Concrete Pipe& Bo
Page 3 and 4:
Joint Testing-Air..................
Page 5 and 6:
PRE-CONSTRUCTIONPRECAUTIONSFederal
Page 7 and 8: the delivery document.If a pipe is
Page 9 and 10: LIFT HOLD DEVICEStenances, the lift
Page 11 and 12: INSTALLATIONLINE AND GRADEFor sewer
Page 13 and 14: construction is not considered to b
Page 15 and 16: invert and the string line. Special
Page 17 and 18: TRENCH WIDTH FOR CONCRETE PIPEPipe
Page 19 and 20: STANDARD INSTALLATIONSThrough consu
Page 21 and 22: STANDARD TRENCH / EMBANKMENT INSTAL
Page 23 and 24: HORIZONTAL ELLIPTICAL PIPESTANDARD
Page 25 and 26: ARCH PIPESTANDARD EMBANKMENT INSTAL
Page 27 and 28: UNSHAPED - A granular foundation wi
Page 29 and 30: EMBANKMENT BEDDING CIRCULAR PIPE(IN
Page 31 and 32: TRENCH BEDDING CIRCULAR PIPE(INCHES
Page 33 and 34: TRENCH BEDDINGS ELLIPTICAL &ARCH PI
Page 35 and 36: EMBANKMENT BEDDINGS ELLIPTICAL& ARC
Page 37 and 38: JOINTINGPlacement of pipe should st
Page 39 and 40: LUBRICATE BELLLubricate bell jointi
Page 41 and 42: ALIGN PIPEAlign bell and spigot ofp
Page 43 and 44: JOINT PROCEDURESJoints for pipe siz
Page 45 and 46: develop the necessary controlled pu
Page 47 and 48: CURVED ALIGNMENTDeflected Straight
Page 49 and 50: FINAL BACKFILLINGOnce the envelope
Page 51 and 52: with the maximum density of a parti
Page 53 and 54: INFILTRATION TEST54American Concret
Page 55 and 56: EXFILTRATIONThe exfiltration test i
Page 57: should be measured from the same re
Page 61 and 62: JOINT TESTING-AIRJoint testing acco
Page 63 and 64: II. BOX CULVERT INSTALLATION MANUAL
Page 65 and 66: • Design live load• Type of joi
Page 67 and 68: Gaskets and sealing materials shoul
Page 69 and 70: ally inspected for rocks, frozen lu
Page 71 and 72: BEDDINGS PRECAST CONCRETEBOX SECTIO
Page 73 and 74: and applied down the sidewall 12 in
Page 75 and 76: should be done uniformly. If the jo
Page 77 and 78: span or 3 ft. (1 m), whichever is l
Page 79 and 80: AASHTO M 273 (M 273M): Precast Rein
Page 81 and 82: Covers joints where infiltration or
Page 83 and 84: Sewer Pipe: Covers acceptance of pi
Page 85 and 86: ASTM C 1433 (C 1433M): Precast Rein
Page 87 and 88: sewer and its connections through p
Page 89 and 90: FEET HEAD OF WATERINTO PRESSURE, PO
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Concrete Pipe & Box Culvert Installation - Shaw Precast Solutions

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