Concrete Q & A: Reinforcing Steel Area Needed for a Residential Slab-on-Ground

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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.)




  


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