How much concrete is needed to make a 19x20 slab?

Answer The amount of concrete needed for a 19-by-20 slab will depend on the inches of thickness. A 4-inch thickness will require 4.69 cubic yards, a 6-inch thickness equals 7.04 cubic yards and an 8-inch ... Read More »

Top Q&A For: How much concrete is needed to make a 19x20 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 is in a slab?

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 »

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 »