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Re: Garage Floor Design

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My 1994UBC Sec. 1604.3, 2nd paragraph says "..........Parking garages for the
storage of private or pleasure-type motor vehicles with no repair or refueling
shall have a floor system designed for a concentrated load of not less than
2000 pounds acting on an area or 20 square inches without uniform live load

Considering the 2000 pound possible maximum load carried by one wheel in a 5
inch x 5inch surface of the floor, this seems a reasonable design criteria.

I've been using 4x or 6x joists @ 16" oc in designing garage floors, depending
on span. . Has anybody been able to use 2x's in their design? If you span 2x
or 3x planks across joists, the worst case would still be the wheel load on
top of the joist and the plank should be stiff enough to transfer the point
load to the adjacent joists. And even so, the distribution of load analysis
will be complicated.
Ernie Natividad