The concrete beam design flow charts address the following subjects:•For a rectangular beam with given dimensions: Analyzing the beam
section to determine its moment strength and thus defining the beam
section to be at one of the following cases:
•Case 1: Rectangular beam with tension reinforcement only. This
case exists if the moment strength is larger that the ultimate
•Case 2: Rectangular Beam with tension and compression
reinforcement. This case may exist if the moment strength is l ess
than the ultimate (factored) moment.
•For T-section concrete beam: Analyzing the beam T -section to determine
its moment strength and thus defining the beam section to be one of the
•Case 1: The depth of the compression block is within the flanged
portion of the beam, i.e, the neutral axis N.A. depth is less than the
slab thinness, measured from the top of the slab. This case exists if
moment strength is larger than ultimate moment.
•Case 2: The depth of the compression block is deeper t han the
flange thickness, i.e. the neutral axis is located below the bottom of
the slab. This case exists if the moment strength of T -section beam
is less that the ultimate (factored) moment.
•Beam Section Shear Strength: two separate charts outline in det ails Shear
check. One is a basic shear check, and two is detailed shear check, in
order to handle repetitive beam shear reinforcement selection. See shear
check introduction page for further details.
In any of the cases mentioned above, detailed procedure s and equations