2. Given fy 60000 psi, fé= 4000 psi, fr = 474.3 psi, Mer 1.295 x 106 lb in, and beam weight is included in the dead load shown, complete parts (a) and (b). Assume normal weight concrete. There is an additional live load of 2.5 k/ft acting across the length of the beam as well. The cracking moment of inertia for the section is 27,225 in² and Ec = 57000√f. ACI 24.2.3.5 is shown below, along with the maximum deflection of a cantilever w1² under a uniformly distributed load. Maximum moment under this load is a. Compute the effective moment of inertia. b. Compute the instantaneous deflection of the beam. = Ma≤(2/3)Mer WD = 2 k/ft Ma> (2/3)Mar 18 ft Ma 24.2.3.5 For nonprestressed members, unless obtained by a more comprehensive analysis, effective moment of inertia, I shall be calculated in accordance with Table 24.2.3.5 using: = 1- frIg Y₁ Table 24.2.3.5-Effective moment of inertia, I Service moment Effective moment of inertia, Is in.4 Ig I 6 #11 4)(1-4) 16 in. (2/3)Mer M 4 in. 27 /in. (24.2.3.5) 32 in. (a) (b) = w k/ft Sfree end = we SEI

2. Given fy 60000 psi, fé= 4000 psi, fr = 474.3 psi, Mer 1.295 x 106 lb in, and beam weight is included in the dead load shown, complete parts (a) and (b). Assume normal weight concrete. There is an additional live load of 2.5 k/ft acting across the length of the beam as well. The cracking moment of inertia for the section is 27,225 in² and Ec = 57000√f. ACI 24.2.3.5 is shown below, along with the maximum deflection of a cantilever w1² under a uniformly distributed load. Maximum moment under this load is a. Compute the effective moment of inertia. b. Compute the instantaneous deflection of the beam. = Ma≤(2/3)Mer WD = 2 k/ft Ma> (2/3)Mar 18 ft Ma 24.2.3.5 For nonprestressed members, unless obtained by a more comprehensive analysis, effective moment of inertia, I shall be calculated in accordance with Table 24.2.3.5 using: = 1- frIg Y₁ Table 24.2.3.5-Effective moment of inertia, I Service moment Effective moment of inertia, Is in.4 Ig I 6 #11 4)(1-4) 16 in. (2/3)Mer M 4 in. 27 /in. (24.2.3.5) 32 in. (a) (b) = w k/ft Sfree end = we SEI

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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