Title:
Concrete Q & A: Reinforcing Steel Area Needed for a Residential Slab-on-Ground
Author(s):
Publication:
Concrete International
Volume:
31
Issue:
8
Appears on pages(s):
63-64
Keywords:
DOI:
Date:
8/1/2009
Abstract:
We are building a townhouse with 50,000 ft2 of interior concrete slab-on-ground. The construction documents call for a 4 in. thick slab with 20 ft joint spacing reinforced with 12 × 12-W1.4 × W1.4 welded wire reinforcement (WWR) located in the upper half of the slab depth. Based on information we’ve seen in Fig. 5.6 of “Design of Slabs-on-Ground (ACI 360R-06),”1 we don’t think this provides a large enough area of reinforcing steel for a slab with joints 20 ft apart. Are there any other documents that support our view? (In SI units: 4600 m2, 100 mm slab; joints at 6 m; reinforced with 300 × 300-MW10 × MW10 WWR.)