SLAB ON GRADE
SLAB ON GRADE
(OP)
I HAVE A JIB CRANE, 1 TON, SPAN 16 FT THE CUSTOMER WOULD LIKE TO PLACE IT ON A SLAB ON GRADE 10" ANY ONE HAS IDEA OF A DESIGN PROCEDURE ON VERIFYING THAT THE CONCRETE WILL TAKE THAT LOAD
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RE: SLAB ON GRADE
f-d
¡papá gordo ain't no madre flaca!
RE: SLAB ON GRADE
You really need the subgrade modulus. Typically, I correlate subgrade modulus to soaked CBR value. So, I'd eitehr do a CBR test (compacted to 95 percent Standard Proctor) or use local knowledge to estimate subgrade modulus and then I'd turn the project over to our structural engineer. It seems you have the loading figured out, so now it's just a straightforward slab-on-grade design, it seems to me. Then again, I'm a geotechnical engineer. . .
f-d
¡papá gordo ain't no madre flaca!
RE: SLAB ON GRADE
RE: SLAB ON GRADE
RE: SLAB ON GRADE
A link for a typical manual is listed below:
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One would expect that you would have to replace the floor with a foundation.
Consult a structural engineer if you deviate from the recommended installation guidelines.
Test the crane after installation and periodically afterward per the manufacturer's instructions.
RE: SLAB ON GRADE
RE: SLAB ON GRADE
When you contribute to an old thread, you should at least have something constructive to add. The original design live load has very little to do with this problem. The bending of the slab is the issue.
RE: SLAB ON GRADE
RE: SLAB ON GRADE
RE: SLAB ON GRADE
RE: SLAB ON GRADE
RE: SLAB ON GRADE
The problem with your (and neaveyoung's) suggestion is that this a jib crane which does not just impose a point load, but also more importantly a concentrated bending moment. The 1 ton load is hung at the end of a 16' jib boom, so imposes a sizeable bending moment. Whether or not the slab will tolerate this bending has little to do with the live load capacity of the slab.
RE: SLAB ON GRADE
BA
RE: SLAB ON GRADE
BA
RE: SLAB ON GRADE
thread507-275056: Baseplate with overturning on SLAB ON GRADE.