1. Sm. l:sm.ImA concrete dam holds water as shown. If thespecific gravity of concrete is 2.4 andassuming a hydrostatic uplift of fullhydrostatic at the heel to zero at the toe,determine the factor of safety against sliding15 mif the coefficient of friction between the baseand the foundation is 0.755m

The specific weight of water, w= 9.81 kn/m3

Answered: 1. Sm (:5m, Im. A concrete dam holds…

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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A rectangular concrete beam has a width of 400 mm and an effective depth of 700 mm. It is reinforced with five 28-mm diameter bars for tension only. Concrete strength is f's = 21 MPa and steel yield strength is fy = 275 MPa. Which of the following most nearly gives the distance of the neutral axis from the extreme compression concrete? A. 139.51 mm B. 151.93 mm C. 118.58 mm D. 188.15 mm
600 mm Figure 1 Determine the following: a) Factored axial load capacity (KN) and factored flexural capacity (KN-m) when concrete fails at a strain of ɛc = 0.003 and steel fails at a strain of ɛs = fy/Es. The displaced concrete shall not be neglected. b) Ultimate moment capacity of the column at infinitely large eccentricity, i.e., the column acts as a beam. Ignore the effect of the displaced concrete. The column drawn in Figure 1 is reinforced with 8 x ¢28-mm bars distributed around its perimeter. Material strengths are fc'=28 MP and fy=415 MPa. The total bar covering is 70 mm. If subjected to eccentric loads, the column will bend about the stronger axis of the section. ww'00ɛ
SITUATION 1: A 250 mm wide rectangular concrete beam is reinforced for tension only. The beam has an effective depth of 300 mm. fc' = 9.3 MPa, fs = 138 MPa, n = 9. Use working stress design for balanced %3D condition. 1. Which of the following most nearly gives the value of k. a. 0.3225 c. 0.6234 b. 0.3526 d. 0.3775 2. Which of the following most nearly gives the value of j. a. 0.7482 c. 0.8742 b. 0.8472 d. 0.4278 3. Which of the following most nearly gives the balanced moment capacity of the beam in kN.m. a. 34.52 C. 36.7 b. 45.36 d. 32.3
The cylindrical steel column has an outer diameter of 4 in. and inner diameter of 3.5 in. The column is separated from the concrete foundation by a square bearing plate. The working compressive stress is 20,000 psi for the column, and the working bearing stress is 1,300 psi for concrete. 7 im
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A rectangular concrete beam of cross section 100mm wide and 400mm deep is prestressed by a straight cable of span 6m, imposed load is 3.14kn/m, area is 36×10³mm²(Z=18×105mm³). Calculate working moment assuming the self weight of concrete as 24kn/m³?
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