IC) What method do we use to calculate runoff for storm sewer design? Calculate the total runoffentering pipe a pipe given: Total area draining to the pipe is 1.87 acres; the runoff coefficient for thatarea is 0.38; tc for the area draining directly into the pipe is 10.2 minutes; tc for the area draining intothe preceding pipe is 9.8 minutes; travel time in pipe the preceding pipe is 0.6 minutes. Assume centralNew Jersey as the location.UsingMethod, Qp was calculated to becfsID) Find the max capacity for the following pipes and determine if they can safely handle a Qp of 3.4 cfs.All pipes are reinforced concrete with n = 0.015.- 12" diameter pipe at a 1% slope has a capacity of- 15" diameter pipe at a 1% slope has a capacity of- 18" diameter pipe at a 0.4% slope has a capacity of- 21" diameter pipe at a 0.05% slope has a capacity offt/sft/scfs andcfs andcfs andcfs andsafely handle Qpsafely handle Qpsafely handle Qpsafely handle QpIE) Check if the following outfall needs erosion protection. Show your work/results to justify youranswer.Soil type is a clay loam; Design discharge is 1.75 cfs; Slope of the pipe leading to the outfall is 0.4%;Outfall diameter is 1.25ftAllowable velocityDesign velocity

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IC) What method do we use to calculate runoff for storm sewer design? Calculate the total runoff entering pipe a pipe given: Total area draining to the pipe is 1.87 acres; the runoff coefficient for that area is 0.38; tc for the area draining directly into the pipe is 10.2 minutes; tc for the area draining into the preceding pipe is 9.8 minutes; travel time in pipe the preceding pipe is 0.6 minutes. Assume central New Jersey as the location. Using Method, Qp was calculated to be cfs

IC) What method do we use to calculate runoff for storm sewer design? Calculate the total runoff entering pipe a pipe given: Total area draining to the pipe is 1.87 acres; the runoff coefficient for that area is 0.38; tc for the area draining directly into the pipe is 10.2 minutes; tc for the area draining into the preceding pipe is 9.8 minutes; travel time in pipe the preceding pipe is 0.6 minutes. Assume central New Jersey as the location. Using Method, Qp was calculated to be cfs

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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Question

IC) What method do we use to calculate runoff for storm sewer design? Calculate the total runoff
entering pipe a pipe given: Total area draining to the pipe is 1.87 acres; the runoff coefficient for that
area is 0.38; tc for the area draining directly into the pipe is 10.2 minutes; tc for the area draining into
the preceding pipe is 9.8 minutes; travel time in pipe the preceding pipe is 0.6 minutes. Assume central
New Jersey as the location.
Using
Method, Qp was calculated to be
cfs
ID) Find the max capacity for the following pipes and determine if they can safely handle a Qp of 3.4 cfs.
All pipes are reinforced concrete with n = 0.015.
- 12" diameter pipe at a 1% slope has a capacity of
- 15" diameter pipe at a 1% slope has a capacity of
- 18" diameter pipe at a 0.4% slope has a capacity of
- 21" diameter pipe at a 0.05% slope has a capacity of
ft/s
ft/s
cfs and
cfs and
cfs and
cfs and
safely handle Qp
safely handle Qp
safely handle Qp
safely handle Qp
IE) Check if the following outfall needs erosion protection. Show your work/results to justify your
answer.
Soil type is a clay loam; Design discharge is 1.75 cfs; Slope of the pipe leading to the outfall is 0.4%;
Outfall diameter is 1.25ft
Allowable velocity
Design velocity

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