Page 491 - Trenchless Technology Piping Installation and Inspection

Index

Note: Page numbers referencing figures are followed by an “f ”; page numbers
referencing tables are followed by a “t”.

AC. See asbestos cement pipes bore path layout/design (Cont.):
access pits, 357–358 minimum depth at level, 211, 211f
additional path curvature, 221–222 overall, 213–216
air scouring, 100t path layout, 214–215
alignment considerations, 286t, 328, planar trajectory (horizontal), 213
376–377 profile/trajectory (vertical plane),
ambient cured resins, 288 209, 209f
American Society of Civil Engineers, safety and, 382
373 separation from existing utilities, 216
annular space, 305t setback distance, 210–211, 211f
appurtenances, reconnecting, 105 vertical trajectory, 208–213
arching effect of soils, 127–128, 128f bore (product pipe) salvage, 27–28
asbestos cement (AC) pipes borehole collapse, 269–271
advantages/limitations of, 149 branch connections, reinstatement of,
joint types in, 149, 149f 90
manufacture of, 148–149 brick pipe defects, 285t
overview of, 141 broken pipe, 284f
usage of, 148 bubbles, 301t
as-built drawings, 264 buckling analysis for CIPP, 75–77,
79–80, 82
background assessment, 48–49 bulges, 302t
backstop, 310, 385 bulkhead, 360
balling, 100t bung holes, defective/leaking, 304t
bar-wrapped steel-cylinder concrete buoyant weight, 222
pipe, 143 buried pipe
beam effect, 136 history, 1–3
bedding, 121f, 122t North America and, 1–2
bends, pipelines with, 278, 279t pipe-soil interaction and, 2–3
berm, 385 Rome and, 1
bidding, 43, 43t bypass pumping, 256, 296, 296f
bits/reamer safety, 343
blisters, 103t, 301t calculation
bore path entry/exit, 192, 192f CIPP deflection, 78–79
bore path layout/design CIPP design, 69, 75–80, 82–83
accuracy/tolerance, 215 CPJ force, 311–312
depth of cover, 208–209, 208f HDD pipe load, 216–226
depth/setback implications, 212 load, 267–275, 273t
horizontal distance to rise to surface, MT force, 321, 321f–322f, 323
209f, 212–213, 213f, 214f pressure limited due to stress, 80, 83

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