From my years of experience installing suspended slabs, I have a few helpful ideas to avoid problems and save money which could be addressed in the design phase.
- Suspended slabs generally come in 8’ widths, so it is most cost-effective to plan a garage in 8’ increments (plus 1” for some wiggle room).
- 8” thick slabs can generally span 29’
- 10” thick slabs can generally span 33’
- 12” thick slabs can generally span 38’
- For garages deeper than 33’ we suggest using a steel beam as a midway bearing shelf
- It is generally more convenient for the contractor if the slab sits in a 12” or deeper foundation shelf. Placing slabs in a shelf also helps with beam height over the garage door and helps with final grade elevations.
- Rectangular garages are the least expensive, but any size or shape can be accommodated.
- The slabs can be placed on a slope, so the back shelf can be 3” higher than the shelf at the front of the garage.
- Topping slab must be a minimum of 3” but cannot exceed an average thickness of more than 4 1/2”.
In Our Services
- We provide engineering for the building permit if required by your city or country.
- We provide certificates of insurance and licensing for the general contractor.
- We will counsel you in the design (size, layout, wall heights) of your garage to get the most space for your money.
- We provide a free estimate and will show you ways to save money on your project.
- We will give you plenty of ideas for how to use all that extra space!
- We work with your foundation contractor to answer any questions.
- We will come and measure your foundation to provide the best fit possible.
- We provide and install a quality, engineered product.
- We will continue to answer any questions regarding waterproofing; core-drilling through the slabs for wiring, pipes, flues, etc.; attaching framing or finishing the underside of the slabs; jointing the topping slab; and any other questions or concerns you may have.