How much concrete is in a slab?

Answer According to, a slab is defined as a "block consisting of a thick piece of something." Concrete slabs are just that---large, thick blocks. Because of this, the amount of concrete in a... Read More »

Top Q&A For: How much concrete is in a slab

How much concrete is needed to pour a 20x20 concrete slab?

Assuming the slab is three-inches thick, you need 13,320 pounds of dry concrete, or 333 40-pound bags. You can calculate the exact amount for a different depth by calculating the cubic yards of the... Read More »

How much concrete do i need for a slab?

Use about 115 percent of the finished slab volume. Concrete volume in cubic yards equals the surface area in square feet multiplied by the slab thickness in feet divided by 27. Normal slab thicknes... Read More »

How much does a concrete slab weigh?

According to Cooper Concrete Company, normal weight concrete weighs about 4,000 pounds per cubic yard. Lightweight concrete weighs about 3,000 pounds per cubic yard. There is no set size for a sl... Read More »

How much does a concrete slab cost?

A 60-lb. bag of concrete mix costs between $3 and $10. A standard 3.5-inch thick, 100 square foot concrete slab would require 65 bags to complete. This size slab can cost between $193 and $640 or m... Read More »