Page 177 - Reliability and Maintainability of In service Pipelines

the Sewer Concrete Formulization Dependent Time Formulization Source hðtÞ 2 a a 1 N u 15 98 ASCE 2 d M u ðtÞ 5 A s f y 2 2 (2000) ffiffiffiffi q F d F N ðtÞ A s 15 98 ASCE F d F N A s 0 1:1 1 63 3 f c V b ðtÞ 5 0:083b[ v dF vp (2000) F c bd F c bd N u F N ðtÞ 5 1 1 3:5bhðtÞ B 1 15 9
of 1:1 1 63 3 0:083C 1 bh 2 q
Modes Stationary h 2 a 2 ffiffiffiffi q 0 f c N u 5 1 1 3:5bh h 2 jD0:74 1 2:54e=di 5 h 2 1 d 2

Resistance a 1 N u 2 d 2 5 0:083b[ v dF vp F N B 1 5250[ f dA s 2 d M s 1 N s 2 ij M s e 5 N s d b 2 2

Different Equation 5 A s f y M u V b 5 F " Δ 5 h 2 d

of Failure Crack Concrete
Formulization Flexu-ral Failure Shear Exces-sive width of Loss Cover

5.9 Mechanism Serviceability
TABLE Failure Strength