Forklift Driver Wheel Load - Concrete Slab on Grade

[2meterman]

I'm designing a warehouse that will have both fork lift wheel loads and rack loads on a concrete slab on grade.

I've done this kind of design before using ACI 360R - Design of Slabs on Ground.

My small dillema is that everything is set up for an axle with 2 wheels. The forklifts on this project have a single load axle with 2 wheels and just one drive wheel (no axle). I can design the slab without a problem for the loads on the load axle. But I'm not sure how to design the slab for the single driver wheel. The loads aren't real high, approximately 5 kips for the driver wheel with a surface contact area of 18 square inches.

Any suggestions?

 

[DaveAtkins]

I wouldn't check the single wheel case. The axle with two wheels will control, since it will have much higher loads (it is near the fork). Also, 5 kips on an industrial floor slab is no big deal.

DaveAtkins

 

[Ron]

Agree with Dave...neglect the single wheel. Stress radius is too small to overlap and vertical stresses are low.