Checker board slab on grade
Checker board slab on grade
(OP)
Does anyone know the specifications for checker board slab on grade placement. it's a 6 inche slab thick over an area of 300 ft x 700 ft. How do I show this on a drawing? What are the min or max area patterns and where can I find this information.
Thank you always
Rain
Thank you always
Rain






RE: Checker board slab on grade
DaveAtkins
RE: Checker board slab on grade
Joints should be spaced no greater than about 30 times the thickness of the slab, so if you have a 6" thick slab, your joints should not exceed 180" or 15 feet, in either direction. The joints should be saw-cut the same day as placement, as soon as the saw can cut into the concrete without ravelling the coarse aggregate, and should be cut to a depth of 20 to 25 percent of the thickness or 1.2 to 1.5 inches deep in this case.
RE: Checker board slab on grade
RE: Checker board slab on grade
RE: Checker board slab on grade
There are lots of rules, what to do and what not to do for SOG joints. Also watch for catch basins, they can present a tricky area for joint.
Regards,
Lutfi
www.cdeco.com
RE: Checker board slab on grade
For a 6" thick slab, I totally agree with the advice from Ron, and others. Here are some links with other backup information:
Long Strip Construction Preferred h
Pour Size For Floors
h
and
h
www.SlideRuleEra.net
RE: Checker board slab on grade
1. Specify a "SoftCut" saw for cutting the joints. It allows the contractor to cut the joints much sooner than the conventional paving saw.
2. For design recommendations see the book by Boyd Ringo with a title something like "Design of Industrial Floor Slabs" (Sorry, I'm not near my bookshelf!)
RE: Checker board slab on grade
THANK YOU THANK YOU THANK YOU!
RE: Checker board slab on grade
"Designing Floor Slabs on Grade, Step-by-Step Proceedures, Sample Solutions and Commentary", 2nd Edition, by Boyd C. Ringo and Rober B. Anderson, published by The Aberdeen Group, 426 South Westgate, Addison, IL 60101, ISBN 0-924659-75-0
One of the best!
RE: Checker board slab on grade
Isn't the proprietary name you mentioned above spelled "Soffcut"? I think it is a concrete saw with a very wide wheel (so it doen't sink into the concrete) and a handle which the operator holds.
DaveAtkins
RE: Checker board slab on grade
Yes, you are closer, but actually it is Soff-Cut by Soff-Cut International and here is their website link:
http://www.soffcut.com/
Thanks for making me look it up, it is an interesting website!