Construction & Contractors/Concrete Slab


I need to have a concrete slab poured. It will hold a container 20'long X 8'wide X 7'high. When full, it will weigh approximately 20000lbs. What would be recommended depth?

Thank you,


6 inch slab would be best, I would personally go with small footings on the perimeter to allow for extra weight distribution. The big thing with anything like a container or machine shop machines, is good soil compaction, this is a must on any pour but even more so on this type. If it was me, I would go 18 inches deep around outside, pour a 12 wide base about 12 inches thick, then compact area, and pour a 6 inch floating slab over top, that way you will give extra support should it end up heavier, I hope this helps answer your question, I have seen 4 inch used and hold but my opinion is a little thicker just to be safe

Construction & Contractors

All Answers

Answers by Expert:

Ask Experts


Albert Roy Horne


I can answer questions about concrete form work, door repairs, and most questions regarding most construction, I can also answer questions related to contractors and which ones are best suited to specific tasks, and some that are best left in the phone book, and any related to drafting and design, with very good knowledge of fire codes and building codes


I have been in the construction industry for over 20 years, with various types of construction and repairs, I was also a fire fighter/fire inspector for a small town fire dept for 3 years. I started out in the industry with architectural drafting, as an education but found i liked the building side better

A member of local 1030 united brotherhood of carpenters and joiners

I took a year of architectural drafting, then a lot of on the job training. While on the fire dept i also took a fire inspection and investigation course, But mostly the training has been on the job.

©2017 All rights reserved.