WebIt will take just 72 sacks or bags to make a cubic yard of concrete which covers about 81 square feet at 4 inch thickness. A 50 pound bag of concrete, 2″ thick, will cover 2.3 square feet. A 50-pound bag of concrete, 4″ thick, will cover 1.15 square feet. A 50 pound bag of concrete, 6″ thick, will cover 0.75 square feet.

Calculating Yards of Concrete: Explained

WebApr 25, 2024 · How many bags of concrete do I need for a 10×10 slab 2 inches thick? A 10×10 slab that is 2 inches thick requires 57 40-lb bags, 38 60-lb bags, or 29 80-lb bags. In … WebYou need to divide the total cubic yards that the yield needs to determine the number of concrete bags you need. Use the following yields per each bag size: 40-pound bag yields … optprofi

Concrete Column Calculator How Much Do I Need?

WebA: Each 90-pound bag of QUIKRETE® Concrete Mix will yield approximately 0.675 cubic feet when mixed. The number of bags you will need depends on the thickness of the pours. For a 450 square foot pour, you will need 56 90-pound bags per inch of thickness For example, if you are using common 2x4" lumber for your forms, the thickness will be 3-1/2". WebPre-mixed concrete bags cost on average $3.50 per 80lb bag. Using pre-mixed bags to cover 400 sq ft at a depth of 6", the estimated cost is $1,165.50 $1,165.50 for 333 x 80lb bags Truck Cost Estimate Ready-mixed concrete costs … WebThe Concrete by 60lb Bag calculator computes the number of 60 pound bags of concrete and water needed to mix a volume ( V) of concrete. INSTRUCTIONS: Choose volume units and enter the following: ( V ) Volume of concrete needed. 60 lb Bags: The calculator returns the number of 60 lb bags needed and the gallons of water needed. optr meaning