Page 502 - Trenchless Technology Piping Installation and Inspection

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potholing, 385 reinforced concrete pipe (RCP), 142
power boring, 100t remedial actions, 104t
prechlorination, 252, 253f renewal methods
preliner options, CIPP, 291 application of, 7t
preream phase, 189, 190f coating/lining, 106–113
pressure limited due to stress defects/remedial actions in, 104t
calculation, 80, 83 disinfection methods, 101–102
pressure pipelines installation considerations, 101
CIPP and, 278, 279t overview of water pipe, 93–95
decision support systems for, 64–65, pipe cleaning methods, 99, 99f, 100t
65f pipe inspection and, 98–99
prestressed concrete cylinder pipe planning/site investigation for, 98
(PCCP), 142–143 reconnecting appurtenances, 105
previous point repairs, 285t safety and, 103, 105f
profile wall PVC pipes, 157–158, 157f selecting water pipe, 96–97
profile/trajectory (vertical plane), steps/phases of, 97, 97f
209, 209f surface restoration/site clearing,
project classification for pipe bursting, 105–106
240–241, 240t as trenchless division, 8
project startup, proper, 382 waste disposal and, 106
protruding service connections, 286t water pipe applications and, 95–96,
PTMT. See pilot-tube microtunneling 96t
pull force, HDD, 217–219, 217f, 219f, replacement methods. See also design
220–221, 224, 224t considerations, replacement;
pullback assist, 28 existing pipe renewal/
pullback phase, 189, 191, 191f replacement
pulled-in-place process, 290 allowable forces and, 351
pulling loads, calculation of application of, 7t
borehole collapse and, 269–271, 270f bursting, pipe, 229–233, 238–240,
planning guide, 271–272 239f, 240f, 350, 353
safe pull strength and, 269t bursting vs. lining, 238
steady-state movement, 267–269, bursting vs. open-cut, 239–240, 240f
268f, 269t construction considerations
theoretical considerations, 267–271 regarding, 252–267, 354–355
pulling shaft, 242–243 design considerations regarding,
pull-off adhesion, 103t 241–251
PVC. See polyvinyl chloride pipe existing pipe materials and, 236–237
PVC-M. See modified PVC host pipe, 352–353
PVC-O. See molecularly oriented PVC inspection guide, 356f–357f
PVC-U. See unplasticized PVC introduction, 348, 350
load calculations regarding, 267–275
quality control/assurance materials in, 350–354
CIPP, 298 new pipe materials and, 237–238
HDD, 341–344 overview of, 229
MT, 314–315 pipe dimensions in, 351–352
replacement design considerations pipe quality and, 354
and, 249–250 pipe removal, 233–236
spray-on coatings/linings, 102 pipes used in, 353
quality levels, utility, 367–368, 367t project classification and, 240–241,
240t
RCCP. See reinforced concrete cylinder as trenchless division, 8
pipe resins, 278, 283, 288
RCP. See reinforced concrete pipe restrained joints, 174, 175f
reamer diameters, HDD, 20t rigid pipes
reamer safety, 343 AC, 148–149
receiving shafts, 357–358 beam effect and, 136
reconnecting appurtenances, 105 behavior of, 129–130, 129f
reinforced concrete cylinder pipe cement-based, 141–149
(RCCP), 143 concrete, 141–148