Using the value of b that prevails in part (a), determineb.1 the intersection of the resultant with the baseb.2 the maximum and minimum pressure intensity at the base. 9:25O A ? ..l 44)Concept :To find the width of base b of the damal. The resultant meets the base at the downstream edgeof the middle thirdWhen the resultant R of all the forces passes through theouter middle third from the toe it means the eccentricity isb =VTe - seepage coef ficientBase width,Step2b)al.Base width is obtained from formula, given below,b =VTe - seepage coefficientb =v2.4 -0.60=6. 72mAnswer: 6.72mStep3c)a2. To prevent dam from overturningMoment of water pressure should be less than or equal tothe moment of the self weight of dam about heelF1 × < Self weight of dam xXx Yph? × < b x h x Ya ×등 x1x 9?x 블 <능ox9×2. 4 x 를Xb > 5. 8 mAnswer: b greater than or equal to 5.8ma3. Factor of safety against sliding is 1.2Forces that causes sliding should be less than forces whichcan resist slidingAnswer: b is 8.33m 1mw surface2m7 mTTYw = 1m3Ye = 2.4(Note T is ton )(coefficient of friction betweenthe base and foundationH = 0.60% of seepage below the base is 60.

Answered: Image /qna-images/answer/add0125c-8966-4ca8-a511-bf4838e117e7.jpg

Answered: T T Yw =1- m3 Yc = 2.4 m3 (Note T is…

T T Yw =1- m3 Yc = 2.4 m3 (Note T is ton ) H = 0.60 (coefficient of friction between the base and foundation % of seepage below the base is 60.

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

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

Question

Using the value of b that prevails in part (a), determine b.1 the intersection of the resultant with the base b.2 the maximum and minimum pressure intensity at the base.

9:25
O A ? ..l 44)
Concept :
To find the width of base b of the dam
al. The resultant meets the base at the downstream edge
of the middle third
When the resultant R of all the forces passes through the
outer middle third from the toe it means the eccentricity is
b =
VTe - seepage coef ficient
Base width,
Step2
b)
al.Base width is obtained from formula, given below,
b =
VTe - seepage coefficient
b =
v2.4 -0.60
=6. 72m
Answer: 6.72m
Step3
c)
a2. To prevent dam from overturning
Moment of water pressure should be less than or equal to
the moment of the self weight of dam about heel
F1 × < Self weight of dam x
X
x Yph? × < b x h x Ya ×
등 x1x 9?x 블 <능ox9×2. 4 x 를
X
b > 5. 8 m
Answer: b greater than or equal to 5.8m
a3. Factor of safety against sliding is 1.2
Forces that causes sliding should be less than forces which
can resist sliding
Answer: b is 8.33m

1m
w surface
2m
7 m
T
T
Yw = 1
m3
Ye = 2.4
(Note T is ton )
(coefficient of friction between
the base and foundation
H = 0.60
% of seepage below the base is 60.

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