The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational …

Jan 21, 2026 · A concrete slab is a structural feature, usually of constant thickness, that can be used as a floor or a roof. A slab-on-ground is supported on the subsoil and is usually reinforced with …

This guide presents state-of-the-art information relative to the construction of slab-on-ground and suspended-slab floors for industrial, commercial, and institutional buildings. It is applicable to the …

A. Saw cuts, also called relief cuts, should be timed carefully to control cracking and maintain the integrity of the slab. According to ACI 302.1R-15, saw-cutt

This guide covers the design of slabs-on-ground for loads from material stored directly on the slab, storage rack loads, and static and dynamic loads associated with equipment and vehicles.

The definitions provided herein complement that source. backshores—shores left in place or shores placed snugly under a concrete slab or structural member after the original formwork and shores …

Dec 8, 2025 · The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational …

American Concrete Institute

Acceptable concrete cracking Q. What is considered as acceptable concrete cracking in cast-in-place foundation walls and slabs per ACI documents? My company is the concrete contractor on a large …

Popouts or popoffs? Q. My concrete driveway was placed last year in the fall. This summer, I noticed that small concrete fragments have broken off the driveway surface exposing large pieces of …