Deep beam (strut-and-tie) to ACI 318-19 Ch. 23, 9.9
Deep beams and transfer girders by the strut-and-tie method: truss forces, struts, nodal zones, the tie and its anchorage, and the distributed steel.
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What you get
From the inputs to a finished deep beam (strut-and-tie) calculation
The applicable checks, step by step
Every check to ACI 318-19 Ch. 23, 9.9 with its equation, the values that go into it, the result and the code section, and the governing case up front. Results update as you type.
A calculation report a reviewer can follow
Inputs, load combinations, every check with its result and reference, and the governing case, in a clear PDF with your title block.
Drawings
Where the calculation has a shape to draw: elevations, sections and the diagrams, on a sheet with your title block, as PDF or DXF.
Your units, your method
US or metric units at any time, LRFD or ASD where the code offers both; the report follows.
Verification
How the deep beam (strut-and-tie) is tested
Against published examples and hand calculations from the code equations, on every change. The method and the sources.
Learn
Step by step
User manual: Deep beam (strut-and-tie)
Every input, check and option of the calculation explained.
Video: Concrete: a simply supported beam
A 16 by 26 in. beam: why you read every row and not only the status bar, and what a stirrup spacing past its limit does. (1:42)
More concrete calculations
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