The design maximum and minimum flow rates in a concrete sewer pipe are 0.60 m/s and 0.030 m/s, respectively. The Manning's roughness coefficient of the concrete pipe changes from 0.01297 at minimum flow to 0.0133 at maximum flow. The critical shear stress for self-cleansing is 2.0 Pa, and the unit weight of water is 9790 N/m³. The pipe must flow no more than 75% full under maximum-flow conditions, and the maximum velocity must be less than 4.0 m/s. Any pipe slope greater than 0.1% is feasible. Determine the minimum allowable pipe slope for a 915-mm-diameter pipe.

The design maximum and minimum flow rates in a concrete sewer pipe are 0.60 m/s and 0.030 m/s, respectively. The Manning's roughness coefficient of the concrete pipe changes from 0.01297 at minimum flow to 0.0133 at maximum flow. The critical shear stress for self-cleansing is 2.0 Pa, and the unit weight of water is 9790 N/m³. The pipe must flow no more than 75% full under maximum-flow conditions, and the maximum velocity must be less than 4.0 m/s. Any pipe slope greater than 0.1% is feasible. Determine the minimum allowable pipe slope for a 915-mm-diameter pipe.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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