Choose a worked example
3 worked examples · 3 short videos each
Reinforced concrete / Concrete corbel
Fontana feature: Image to calcCreate a corbel
calculator from
a labelled sketch.
Create cited strut-and-tie workings from a labelled sketch. Then add checks through suggestions and follow-up requests.
“How does bearing offset change the tie and strut forces?”
01 / Search
Find a strut-and-tie
method for the corbel.
Search the original corbel note. Identify the load line, node geometry and assumed stress limits, and open the cited sketch and equations.
Identify the bearing node, diagonal compression strut and reinforcement tension tie shown in the sketch. The engineer confirms the adopted load path.
Record the model assumptions and required checks before creating the calculator.
Open the selected source guidance, follow its citation and identify the assumptions for the corbel detail.
02 / Image to calculator
Create the calculator
from the attached sketch.
Attach the labelled image in Builder. Confirm the interpreted dimensions, vertical load and adopted limits, then create the force and stress calculation with the sketch and source citations.
Inspect one bearing position: review tie and strut forces, then compare tie, nominal strut and bearing-face stresses with the adopted limits. Keep unassessed checks visible.
The engineer confirms the interpreted geometry, inputs and model.
Attach the sketch in Builder, review its geometry and model, then inspect one cited LaTeX check with the picture beside it.
03 / Calculator editing
Add checks
to the calculator.
Select a suggestion card to add anchorage, nodal-zone and bursting-reinforcement checks to the existing corbel calculator.
Continue with follow-up requests to change the assumptions, formulas or outputs to suit your task.
Review the method, assumptions and workings for each added check.
Click the suggestion card, then review the added inputs, equations and check results.
A corbel calculator created from the sketch, then extended with additional checks through a suggestion card and follow-up edits.
Four pages: an original labelled sketch, node geometry, worked force and stress calculations, and four comparison cases. Companion image and CSVs are included.
The source PDF supplies the initial force model and assumed stress comparisons. The final clip requests additional anchorage, nodal-zone and bursting-reinforcement checks beyond that source. Their methods and results need separate review; adding checks does not establish a complete corbel design.
More worked examples
Next example:
Purlin loads
StructuralPurlin loadsCreate a dropdown from a loading table and calculate equivalent uniform loads.Demo with your own example
See Fontana with
your own documents.
Bring an engineering document or calculation task.
See how to find source information and build a reusable calculation.