For Architects

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.
back to top