Question 2: A concrete beam ( rectangular) of cross-section 30 cm deep and 20 cm wide is pre-stressed by (15) wires of 5 mm diameter located (6.5 ) cm from the bottom of the beam and 3 wires of diameter of 5 mm, 2.5 cm from the top. Assuming the pre-stress in the steel as 840 N/mm", calculate the stresses at the extreme fibers of the mid-span section when the beam is supporting its own weight over a span of 6 m. If a uniformly distributed live load of 6kN/m is imposed, evaluate the maximum working stress in concrete. The density of concrete is 24KN/m³. 200 mm I 25 mm LL=6kN/m 300 mm 6 m K 65 mm

Question 2: A concrete beam ( rectangular) of cross-section 30 cm deep and 20 cm wide is pre-stressed by (15) wires of 5 mm diameter located (6.5 ) cm from the bottom of the beam and 3 wires of diameter of 5 mm, 2.5 cm from the top. Assuming the pre-stress in the steel as 840 N/mm", calculate the stresses at the extreme fibers of the mid-span section when the beam is supporting its own weight over a span of 6 m. If a uniformly distributed live load of 6kN/m is imposed, evaluate the maximum working stress in concrete. The density of concrete is 24KN/m³. 200 mm I 25 mm LL=6kN/m 300 mm 6 m K 65 mm

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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