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Answered in 5 minutes by:
1/22/2013
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 5,452
Experience: Over 35 years of Structural Engineering experience.
Verifiedwalkereng :
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walkereng :
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walkereng :
Are you pouring up to another existing slab or up to a footing?
Customer:
butting to an existing slab
walkereng :
The Building Code is really silent on this issue.
walkereng :
You can leave a joint anywhere in the slab for expansion and contraction
walkereng :
It is a good idea to provide dowels when you have excavated and then have compacted fill and you are tying into a slab that is existing.
Customer:
My question is "is dowelling absolutely required by code?......and would it prevent slab from lifting, should water be present and freeze under slab?
walkereng :
Doweling is not required by Code between slabs on grade.
walkereng :
It would help differential movement if that condition occurred. But if there is too much differential movement, it can cause cracking
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 5,452
Experience: Over 35 years of Structural Engineering experience.
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