Concrete Slab on Grade
Concrete Slab on Grade
(OP)
I need to design a 4' wide by 35' long concrete slab on grade. I've done floor slabs elevated, but never a slab on grade and not sure really were to go with it or how to design. I planned on using 4,000 psi conc with wwf for reinf. any help would be appreciated.
Thanks
Thanks






RE: Concrete Slab on Grade
Joints to control cracking
panels should be square or nearly square
joints should be at least 1/4 depth of slab
Make sure mesh is in iproper location
RE: Concrete Slab on Grade
RE: Concrete Slab on Grade
RE: Concrete Slab on Grade
RE: Concrete Slab on Grade
see ACI 360R for sog design data, ACI 302.1R for sog construction reccomendations.
RE: Concrete Slab on Grade
RE: Concrete Slab on Grade
RE: Concrete Slab on Grade
Dik
RE: Concrete Slab on Grade
It sounds like you should have two structual items. 1) A stair support footing. 2)And a standard slab on grade, 4" thick with 6x6-w1.4xw1.4 WWF. Essentially you have a sidewalk.
Or place the slab on grade with a thickend slab under the stair support. Typical thickened area is 1'-6" wide by width of stairs + 6". Add 2-#4 in the bottom of the thickened portion.
Slab on Grades are generally not designed unless there are heavy equipment or moving industrial loads on them. Or garages for heavy trucks.
Google it, you should find some tables that give the suggested thickness and reinforcing for various loads.
RE: Concrete Slab on Grade
RE: Concrete Slab on Grade
http://www.concreteparkinglots.com/
FC&PA used to give lots of good handouts on this subject as well. It may be worth while to contact them. They also have CAD details for typical SOG and parking lots and driveway designs.
Regards,
Lutfi
RE: Concrete Slab on Grade