Page 41 - Buried Pipe Design

External Loads 19

P
r

P
r
H B c

P
r

C c
Figure 2.5 Diagram for coefficient C c for positive projecting conduits. (Reprinted by per-
mission, from Spangler and Handy, Soil Engineering, 4th ed., Harper & Row, 1982.)

TABLE 2.2 Values of C c in Terms of H/B c
Incomplete projection condition K 0.19 Incomplete ditch condition K 0.13
r sd p Equation r sd p Equation
0.1 C c 1.23 H/B c 0.02 0.1 C c 0.82 H/B c 0.05
0.3 C c 1.39 H/B c 0.05 0.3 C c 0.69 H/B c 0.11
0.5 C c 1.50 H/B c 0.07 0.5 C c 0.61 H/B c 0.20
0.7 C c 1.59 H/B c 0.09 0.7 C c 0.55 H/B c 0.25
1.0 C c 1.69 H/B c 0.12 1.0 C c 0.47 H/B c 0.40
2.0 C c 1.93 H/B c 0.17
SOURCE: Reprinted from Spangler and Handy, Soil Engineering, 4th ed., Harper & Row,
1982, by permission of the publisher.