Page 494 - Trenchless Technology Piping Installation and Inspection

444 Inde x

design. See also bore path layout/ ductile iron pipes (Cont.):
design joints, 174, 175f
CIPP, 69, 75–80, 82–83, 288t, 297–298, manufacturing, 173–174
298t standards, 174, 174t
drilled path, 191–193 uses of, 172
existing pipe renewal/replacement,
49–51, 67–68 earth-pressure balance machine
HDD, 191–193, 208–216, 225–226 (EPBM), 12, 14f
open-cut, 119–120 ejection, 234, 235–236
phase safety considerations, 380–381 electric resistance welded (ERW) pipe,
design considerations, replacement 177
cost estimating, 239f, 251 electrical strike, 391
dispute resolution mechanisms, 250 embedment, 121f, 122t
drawings/specifications, 248–249 enlargement casing, PTMT, 326
existing pipe/site considerations, EPBM. See earth-pressure balance
242 machine
geotechnical, 243–245, 244f epoxy linings
ground movement, 247 advantages/limitations of, 110t
insertion/pulling shaft, 242–243 lining methods comparison with,
operating pressure, 245 115t–116t
overview of, 241 overview of, 108–109
permits, 251 spray head for, 109, 110f
quality control/assurance, 249–250 epoxy resins, 283
risk assessment, 245–247 equipment operator training, 391–392
submittals, 249 ERW. See electric resistance welded
utility survey, 241–242 pipe
design decision model (DDM), 172 ethylene molecule, 164f
dewatering, 256 evaluation/selection of alternatives, 49
differing site condition, 364 existing pipe materials, 236–237
disinfection methods, 101–102 existing pipe renewal/replacement
dispute resolution mechanisms, 250 applications of, 52t, 54t
downhole equipment, HDD and, 342 CFP and, 52f, 52t, 54t, 56t, 60, 61f
drag scrapers, 100t CIPP and, 52f, 52t, 53, 54t–55t, 58f
drawings, 248–249 coatings/linings and, 52f, 52t,
drill stem recovery, 28 54t–55t, 57–62, 58f, 60f
drilled path design, 191–193 decision support systems for, 57f,
drilling fluids 64–65, 65f, 66f
composition/mixing water, 194 design process and, 49–51
disposal of excess, 194–195, 195f emergencies and, 46, 48f
functions of, 193–194 emerging design concepts for, 67–68
HDD and, 193–196, 195f, 196f, 342, existing pipe underperformance
343, 347–348 and, 45–46
inadvertent returns, 195–196, 196f expected life of renewal methods
recirculation, 195 and, 69t
safe disposal of, 381–382 factors to consider regarding, 45–46,
safe handling of, 381 47t, 51, 53
drilling rig, HDD, 193 fully deteriorated pipe and, 50–51,
drill-rod radius of curvature, 192–193 50t
driving shafts, 357–358 lateral renewal and, 56t, 61
dry casting, 142 long-term testing and, 67–68, 69t
dry film thickness, 103t MSL and, 52f, 52t, 54t–55t, 57–58,
dry tube, 304t 59f
ductile iron pipes overview of, 45, 51
advantages/limitations of, 174, 175t, partially deteriorated pipe and, 50,
176 50t
cast-iron pipe regarding, 172–173, pipe bursting and, 52f, 52t, 54t, 56t,
173f 63–64, 64f
corrosion and, 172, 178 pipe removal and, 52f, 52t, 54t, 56t,
history of, 171 64