Page 467 - Civil Engineering Formulas

INDEX 393

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