Cracking Moment of Reinforced Concrete Beams - Gross Section vs Transformed Section
1 year ago
44
In this video, we focus on the first uncracked phase of bending in a reinforced concrete beam. We compute the cracking moment and curvature and cracking using two different approximations:
(1) Gross section - ignore the steel, use concrete only
(2) Transformed section - transform the steel area into equivalent concrete area
The gross section approximation is often used in design, as it is close enough and conservative, but the transformed section may give a more accurate solution.
Chapters:
0:00 Flexure in RC
0:41 Gross vs Transformed
2:30 Gross Discussion
5:54 Gross Example
10:56: Transformed Discussion
14:17 Transformed Example
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