At 300 bags, a hairline crack appeared near column C3. At 400 bags, the crack widened. At 450 bags—before reaching the design load—the slab in a perfect circle, 18 inches in diameter, dropping a sandbag into the floor below.
Leo closed the laptop. He looked at the hole in the slab. Then at the laptop’s webcam light—which was on, though he’d never opened any camera app. CSI SAFE 12.01 Portable.rar
For two weeks, it worked perfectly. He modeled the 12-inch slab, defined the post-tensioning tendons, applied live loads. The analysis ran in under four minutes. The punching shear ratios came out beautiful—0.89. Compliant. At 300 bags, a hairline crack appeared near column C3
He sent the drawings to the client. They were thrilled. At 300 bags