The outlet structure for a stormwater detention pond consists of a broad-crested weir for the design flood overflow. It has a crest height of 8.0 ft above the bottom of the pond. The head on the weir cannot exceed 2.0 ft at the maximum outlet discharge of 400cfs. Calculate the required crest length of the weir.

The outlet structure for a stormwater detention pond consists of a broad-crested weir for the design flood overflow. It has a crest height of 8.0 ft above the bottom of the pond. The head on the weir cannot exceed 2.0 ft at the maximum outlet discharge of 400cfs. Calculate the required crest length of the weir.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Emergency spillway for dams should safely bypass floods that exceed: Select one: a. Permanent storage capacity. b. Wave action depth. c. None of above. d. Temporary storage capacity.
Compute the discharge over a Cipolleti weir 5.0 ft long under a head of 0.85 ft. Compare with the discharge over a standard rectangular weir with the same length and head.
A rectangular, sharp crested weir width is 1.5m long, How high should the weir be placed in a channel to maintain an upstream depth of 1.95m for a flow of 0.30 cum/sec? use Francis Formula
1. A 16.5-ft wide rectangular channel is equipped with a 4-ft high broad-crested weir. If the upstream flow depth is 6.5-ft determines: a) The flow rate over the broad-crested weir. b) The minimum flow depth above the weir c) If the broad-crested weir is replaced with the rectangular weir, determine the flowrate over the weir.
The Peripheral overflow weir of a settling tank has 60 identical 90 degree V notch weirs, all set in the same apex level.if the daily flow rate is 1296m3 fine the flow over an individual V notch in L/s
If the surface loading is 150m3/(m2.d) and weir overflow rate is 550m3/(d.m), compute for a circular primary clarifier with a single peripheral weir 1Radius of the clarifier. 2Flow rate into the clarifier.
Solve it quickly
1. A 2 hr. UH is shown below Time (hr.) Discharge (m³/sec.) 1 5 2 15 12 3 4 10 5 6 If a storm of 4.2 cm. occurs in 2 hr. duration over the catchment and ø - index is 0.80 cm/hr., Calculate The maximum discharge of the resulting DRH (i) The maximum flood discharge if the base flow is 7 m/sec. (ii)
A contracted weir which is built in a rectangular channel has a length of weir of 1.407 m and a height above the crest of 0.20 m. Using Francis formula, determine the discharge flowing in the weir if it has two end contractions in cum/sec.
During major flood events water flows over the top of a roadway. (a) Determine the head (H) on the broad-crested weir for a discharge rate of 15,000 cfs if the overflow section of roadway is horizontal and 500 ft long. Assume a discharge coefficient of 0.33. (b) Assume that a vehicle stalled on the roadway will be washed off the roadway into the downstream channel if the water depth exceeds 4.0 ft. Compute the water depth and velocity on the roadway. Will a stalled vehicle on the roadway remain on the road during the flood?
I need the answer as soon as possible