**Answer:** ACI 318 does not provide clear requirements as =
to how to deal with overlapping punching-shear perimeters. However, this un=
common case may be modeled =
within SAFE as follows:

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- Model only one column as you would following a hand-calculation approac=
h.

=
=20
- Use statics to replace the loading within both columns with equivalent =
loads and moments located at the centroid of the composite section.

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- SAFE will then check the punching-shear perimeter of the total composit= e section. Here, results will align with general practice. =20

=20

**NOTE:** Punching-shear overwrites are available such that=
the perimeter may be manually input according to requirements.

- =20
- Verification examples of punching-shear calculations per various buildi= ng codes are available within SAFE through Help > Documentation. =20