number of main reinforcements at the midspan in tension

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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a 6-m long restrained beam is carrying an ultimate load of 98 kN per meter throughout the span. The beam section is 250mm wide and 550mm deep. The beam will use concrete whose strength is 20.7 Mpa and steel reinforcement whose yield strength is 280 MPa. The concrete cover to be used is 50 mm as it is exposed to weather. The main reinforcement to be used is 28 mm in diameter, while the shear reinforcement is 10mm in diameter. Using ultimate strength design and one layer of reinforcement,

1. determine the number of main reinforcements at the midspan in tension
2. determine the maximum moment that the analysis is classified as singly reinforced.

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