How deep should a concrete garage floor be?
A standard garage slab should be at least 4 inches deep, depending on the subgrade condition (100 mm). You can raise the thickness to 6-inches if the garage has heavy machinery in it or heavy shelving loads. The concrete slab should be at least four inches thick.
What is a suspended slab garage?
Suspended (or structural) garage floors are supported by the foundation, instead of the ground. Most slabs simply rest on grade and have no structural function. They are often not supported by the garage foundation.. Garage floors that are suspended require special attention.
Is rebar necessary for garage floor?
A garage slab or the garage concrete floor does not need rebars, provided it is 4” or less in thickness. Other forms of concrete reinforcement will however reduce cracks. Rebar is certainly required if the garage slab is 6” or thicker. This is the short & sweet answer.
Should you put plastic under concrete?
Although it may seem water-tight, this grade of material allows a lot of water vapor to pass through. 6-mil plastic often gets damaged during placement of reinforcement and concrete, creating holes that can let a considerable amount of water vapor into the slab.
Can you build under a garage?
A basement under the garage is possible and is a great way to add extra space to your home, but it takes careful planning and extreme precision when executing the plan. You must remember a garage floor is responsible for holding an excessive amount of weight.
Do you need wire mesh in a garage floor?
And yes, mesh is important: Concrete is strong in compression, but not under tension. So, if it flexes, like a slab with a vehicle on top of will do, it cracks at the bottom whre the flexing becomes tension. Steel mesh will prevent this to a large degree and hold it all together.
What concrete mix is best for garage floor?
If you opt for reinforced concrete for your garage floor, your best bet would be either RC20/25, or RC28/35. These varieties are designed to cope well under exposure from the cold and last against wear from human tread.
How much concrete do I need for a precast garage floor?
Pour 3” of concrete topping minimum onto the Precast Garage Floor. Slope topping slab from 6” to 3” toward front of garage for proper drainage Place control joints directly above Precast Garage Floor keyway joints. These may be tooled during concrete placement, or saw cut afterwards. Additional waterstops, damproofing, and sealers can be used.
How to install precast garage floor suspended slabs?
Precast Garage Floor suspended slabs are set in place and the keyway joints are then grouted. Insert paper dam into Precast Garage Floor voids at least 6” from each end.
How do you top a concrete garage floor?
Slope topping slab from 6” to 3” toward front of garage for proper drainage Place control joints directly above Precast Garage Floor keyway joints. These may be tooled during concrete placement, or saw cut afterwards. Additional waterstops, damproofing, and sealers can be used.
How to build a garage floor slab?
Garage floor slab construction process includes the preparation of base, erection of formwork, placement of reinforcement, pouring, compaction, finishing and curing of the concrete slab. Fig 1: Finished garage concrete floor slab.