INDEX 393Pumps and pumping systems (Cont.):
efficiency and power input, 341
friction head, 340
head, 338
static discharge head, 338
static head, 338
static suction head, 338
velocity head, 340
Rainfall intensity, computing, 333
Steel formula, 333
Rainwater accumulation on bridges,
273
Rankine theory, 189
Rapid-mix basin, design of
373
Required strength of concrete,
129
Rectangular channels, 325
Retaining walls, forces on, 189
types of, 151
Reynolds number, 299
Road formulas, 275–286
Rolling and moving loads, 53
Roof live loads, 244
seismic loads, 246–248
snow loads, 245
wind loads, 245
Roof slope, to avoid ponding, 172
Safe loads for beams, 53
for steel beams, 62
Sanitary sewer system design, 380
Sanitary wastewater treatment, 368,
369, 373, 374, 383
Scaled distance, 199, 205
Schliter formula, 356
Section, transformed, of concrete
beam, 121
Sections, geometric properties
of, 13
Sediment, prediction of delivery rate,
332
Settlement of column shafts, 112
Sewers, flow velocity in, 361
flow-regulating devices
for, 364
required flow velocity
in, 362
sanitary system, design of,
380
Shaft settlement of columns,
112
Shear in concrete slabs, 145
Similitude, physical models,
298
Single piles, axial capacity of,
112
Sizes of lumber, 157
Slope correction in surveying,
180
Soils and earthwork formulas,
185–205
Anderson formula, 200
bearing capacity of, 192
blasting operations, 198–205
air concussion, 203
borehole diameter, 200
burden and spacing
determination,
200–202
Konya formula, 201
Langefors’ formula, 201
stemming, 202
vibration control, 204
California bearing ratio,
195
cohesionless soils, lateral pressure
in, 188
cohesive soils, lateral pressure in,
189
compaction equipment, 195
compaction tests, 193
load-bearing, 194
earthmoving formulas,
196–197
quantities hauled, 197