A trapezoidal channel with bottom width b=10m, sideslope m=1.5, the flow rate is 50m3/s. Determine thecritical flow depth hc, Vc, and Sc. [Hint: B=b+2mh,A=(b+mh)h, A3/B=Q2/g = constant, work to obtainA3/B=255] QUESTION 1a) Design the timber floor for a dwelling if it comprises tongued and grooved (T&G)boards carried by 3.6m span joists at 600mm centres. The load imposed by thedead weight of the boards is 0.1kN/m, by the joists is 0.12kN/m² and by plastercelling on the underside 0.18KN/m2. The floor is subjected to a domestic imposedload of 1.5kN/m?. Use tropical wood - iroko timber, whose density is 657 kg/m.b) Fig. 1 below shows a house floor which uses 50 mm wide x 150 mm deep timberjoists spaced at 400 mm centres. If the maximum permissible stress in the timber islimited to 7.5 N/mm², determine the maximum allowable simply supported span ofthe floor if it supports the following loads:Dead load of floor 0.45 kN/m2Imposed load on floor = 1.5 kN/m²%3D 1Compute the hydraulic radius andhydraulic mean depth for a smoothconcrete-lined channel6m1.00.5m3n

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1Compute the hydraulic radius and hydraulic mean depth for a smooth concrete-lined channel 6m 1.0 0.5m 3n

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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Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.

Question

A trapezoidal channel with bottom width b=10m, side
slope m=1.5, the flow rate is 50m3
/s. Determine the
critical flow depth hc
, Vc
, and Sc
. [Hint: B=b+2mh,
A=(b+mh)h, A3
/B=Q2
/g = constant, work to obtain
A3
/B=255]

1Compute the hydraulic radius and
hydraulic mean depth for a smooth
concrete-lined channel
6m
1.0
0.5m
3n

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