(c) A trapezoidal channel with bottom width 3 m and side slopes 5(H): 2(V) conveys 8 m³/s of flow. The channel rests on 0.32° ground surface lined with concrete at bottom and dressed stone in mortar on both sides (TABLE Q2(c)). If a 0.5 m-high weir is placed across the channel section, determine depth of flow above the weir.
(c) A trapezoidal channel with bottom width 3 m and side slopes 5(H): 2(V) conveys 8 m³/s of flow. The channel rests on 0.32° ground surface lined with concrete at bottom and dressed stone in mortar on both sides (TABLE Q2(c)). If a 0.5 m-high weir is placed across the channel section, determine depth of flow above the weir.
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Transcribed Image Text:(c)
A trapezoidal channel with bottom width 3 m and side slopes 5(H): 2(V) conveys
8 m³/s of flow. The channel rests on 0.32° ground surface lined with concrete at
bottom and dressed stone in mortar on both sides (TABLE Q2(c)). If a 0.5 m-high
weir is placed across the channel section, determine depth of flow above the weir.
Transcribed Image Text:Concrete
Metal
i. formed, no finish
ii. float finish
iii. gunite, wavy section
Concrete bottom, float finish, sides as indicated
i. random stone in mortar
ii.
iii. dressed stone in mortar
iv. cement rubble masonry
v. dry rubble (rip-rap)
Brick
Channel type
TABLE Q2(c)
i. smooth steel surface (unpainted)
ii. corrugated
Wood
cement rubble masonry, plastered
i. glazed
ii. in cement mortar
i. planed, untreated
ii. plank with battens
Manning's n
0.013 -0.017
0.013 -0.015
0.018 -0.022
0.017 -0.020
0.016 -0.020
0.015 -0.017
0.020 -0.025
0.020 -0.030
0.011 -0.014
0.021 -0.030
0.011 -0.015
0.012 -0.018
0.010 -0.014
0.012 -0.018
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