Page 493 - Trenchless Technology Piping Installation and Inspection

Index 443

conventional pipe jacking (CPJ) (Cont.): cured-in-place pipe (CIPP) (Cont.):
method description, 310–311 liner curing, 291–292, 292f
minimum depth guidelines, 31, load influence coefficients and, 72t
34t, 309 Manning coefficient ‘n’ regarding,
MT and, 312, 314f, 321, 321f–322f, 73t
323 method description, 278
overview of, 9–10, 10f, 307, 308f minimum thickness and, 80, 83
pipe dimensions, 308 ovality factors/physical properties
pipe joint cushion and, 309 regarding, 70t
pipe locating/tracking, 311 partially deteriorated pipe and, 81
pipe used in, 307–308 plugging/bypass pumping and, 296
pipe/soil type and, 35t preliner options, 291
types of, 11–12, 11f, 12f, 13f, 14f pressure limited due to stress and,
worker entry and, 9, 11, 11f 80, 83
corrosion protection pulled-in-place process, 290
of concrete/composite/plastic pipe, quality issues, 298
178–179 sample specifications for, 83–91
of ductile iron pipe, 172, 178 testing issues, 299
in general, 177 trench widths/ku´ values regarding,
of steel pipe, 177, 178 71t
corrugated steel pipe, 176–177 tube wet-out and, 288–290, 289f
cost estimating uses of, 277, 278, 279t
in HDD project, 43, 43t workmanship and, 297
replacement design considerations curing, CIPP liner, 291–292, 292f
and, 239f, 251 cuts, coating, 303t
CP. See nonreinforced concrete pipe cutting heads, MT, 312, 314, 316f
CPJ. See conventional pipe jacking
crack in liner, 304t data collection, 49
cracks, 284f daywork (cost-plus) contracts,
creep, 298 200–201
cross-sections, pipelines with varying, DDM. See design decision model
278, 279t decision support systems
culverts, arching effect and, 127–128 existing pipe renewal/replacement,
cured-in-place pipe (CIPP) 57f, 64–65, 65f, 66f
acceptance, 297 for gravity pipes, 64–65, 66f
background on, 277 for pressure pipes, 64–65, 65f
buckling analysis for, 75–77, defect codes
79–80, 82 CIPP, 297t
characteristics of, 283, 288–290 sewer, 280, 280t
defect codes, 297t defects
defects, effect of pipe, and, bung hole, 304t
279–280, 281t–282t, 283, 284f, CIPP, 279–280, 281t–282t, 283, 284f,
285t–286t, 287f 285t–286t, 287f, 300t–305t
defects, potential, 300t–305t construction, 287f
deflection calculation for, 78–79 in pipes, 279–280, 280t, 281t–282t,
design calculations for, 69, 75–80, 283, 284f, 285t–286t, 287f
82–83 seam tape, 305t
design issues, 297–298, 298t spray-on coatings and, 104t
design properties of, 288t deflection
existing pipe renewal/replacement calculation for CIPP, 78–79
and, 52f, 52t, 53, 54t–55t, 58f in flexible pipes, 138, 139f
factors influencing use of, 278 deformed pipes, 278, 279t, 284f
fully deteriorated pipe, 73–74, 74t density range, PE, 163
gravity pipe flow comparison and, deposits, 285t
73t depth
inspecting installation of, 292, of cover, 192, 208–209, 208f
293t–295t, 297 guidelines, 31, 34t, 309, 320, 345–346,
installation methods, 290–292 345t
inversion process, 290–291, 291f at level, minimum, 211, 211f
limitations of, 279t setback implications, 212