please answer for manhole B A 27-acre drainage basin comprising of seven sub-catchments is shown in Fig. 1. Determine the design flows (Q) entering manholes A, B,Ga.C, and E in cfs for a 5 year return period. The area, runoff coefficient and inlet time for each sub-catchment is shown in Table 1; thelength and slope for each pipe in Table 2. Use the rainfall intensity equation i = 1207 where i is the rainfall intensity in inches/hr, T isTa+27the return period and T, is the duration in minutes.IIAIIIVVpusEВVIVII Table 1. Characteristics of the drainage basinCatchmentAreaRunoffCoeficienthettime(acres)Ct(min)20.750.77II40.610IV40.610V0.515VI4.50.515VII4.50.515Table 2. Pipe characteristicsSlope(S,)SewerLength(ft)DiameterPipe(ft)ЕВ4501.750.0064АВ55020.0081BC40030.0064CD4503.50.0064

A = 27 acre T = 5 years return i=120T0.175Td+27=0.015 Pipe Length slope EB 450 0.0064 AB 550…

A 27-acre drainage basin comprising of seven sub-catchments is shown in Fig. 1. Determine the design flows (Q) entering manholes A, B, C, and E in cfs for a 5 year return period. The area, runoff coefficient and inlet time for each sub-catchment is shown in Table 1; the length and slope for each pipe in Table 2. Use the rainfall intensity equation i = 1207.170 Ta+27 where i is the rainfall intensity in inches/hr, T is the return period and T is the duration in minutes. A II IV V E В VI II

A 27-acre drainage basin comprising of seven sub-catchments is shown in Fig. 1. Determine the design flows (Q) entering manholes A, B, C, and E in cfs for a 5 year return period. The area, runoff coefficient and inlet time for each sub-catchment is shown in Table 1; the length and slope for each pipe in Table 2. Use the rainfall intensity equation i = 1207.170 Ta+27 where i is the rainfall intensity in inches/hr, T is the return period and T is the duration in minutes. A II IV V E В VI II

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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Concept explainers

Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.

Question

please answer for manhole B

A 27-acre drainage basin comprising of seven sub-catchments is shown in Fig. 1. Determine the design flows (Q) entering manholes A, B,
Ga.
C, and E in cfs for a 5 year return period. The area, runoff coefficient and inlet time for each sub-catchment is shown in Table 1; the
length and slope for each pipe in Table 2. Use the rainfall intensity equation i = 1207 where i is the rainfall intensity in inches/hr, T is
Ta+27
the return period and T, is the duration in minutes.
II
A
II
IV
V
pus
E
В
VI
VII

Table 1. Characteristics of the drainage basin
Catchment
Area
RunoffCoeficient
hettime
(acres)
C
t(min)
2
0.7
5
0.7
7
II
4
0.6
10
IV
4
0.6
10
V
0.5
15
VI
4.5
0.5
15
VII
4.5
0.5
15
Table 2. Pipe characteristics
Slope
(S,)
Sewer
Length
(ft)
Diameter
Pipe
(ft)
ЕВ
450
1.75
0.0064
АВ
550
2
0.0081
BC
400
3
0.0064
CD
450
3.5
0.0064

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