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How wheel load is distributed on a slab under soil?

How wheel load is distributed on a slab under soil?

RE: How wheel load is distributed on a slab under soil?

Based on AASHTO's load distribution through soil cover I calculate a distribution width of 1.37 m by 1.37 m which results in a distributed load of 53 kN/m2.

Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
www.americanconcrete.com

RE: How wheel load is distributed on a slab under soil?

Are you using LFD or LRFD? Also what is your tire width? I believe those factor into the distribution.

RE: How wheel load is distributed on a slab under soil?

Yeah, I assumed a 10 inch by 10 inch tire contact area.

Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
www.americanconcrete.com

RE: How wheel load is distributed on a slab under soil?

Big difference between the Boussinesq and Westergaard solutions in Example 6.2 (11.43 vs 7.25 psf).

BA

RE: How wheel load is distributed on a slab under soil?

Per AASHTO, Its the tire contact area increased by 1.15 times the depth of fill. If you have overlapping wheels, it would increase. Im getting around 70Kn/m


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