Understanding Post-Tensioned Concrete Elongation Calculations: A Practical Guide

If you’ve ever stood on a post-tensioned slab during stressing operations, you know the moment of truth: the jack gauge reads one number, but does the elongation match? Getting the elongation calculation right is the bridge between design intent and field verification — and it’s one of the most nuanced calculations in structural engineering. Why … Read more

How to Check Punching Shear in a Concrete Slab: Worked Example with ACI 318-19

Punching shear is one of the most critical failure modes in reinforced concrete flat slabs. It occurs at columns and concentrated loads where the slab can “punch through” in a cone-shaped pattern — and when it fails, it fails suddenly. Here’s how to check it properly using ACI 318-19, step by step. What Is Punching … Read more