Example: For a 6 feet above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground. The calculator will indicate the number of 50 lb. How do you measure for concrete? How to calculate concrete: Determine how thick you want the concrete. Measure the length and width that you'd like to cover. Multiply the length by the width to determine square footage. Convert the thickness from inches to feet.
Multiply the thickness in feet by the square footage to determine cubic feet. What size is a yard of concrete? To determine the amount of materials you need in cubic yards, you must first convert all three dimensions to the same unit of measurement. How much does ready mix concrete cost? How thick should a concrete slab be? Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks.
To prepare the base, cut the ground level to the proper depth to allow for the slab thickness. How many square yards are in a cubic yard? Square yards and cubic yards are units for quite different things, and you can't convert from one to the other.
A square yard is a a unit of area and a cubic yard is a unit of volume. The calculator will indicate the number of 50 lb. How many 80 lb bags of concrete do I need for 1 yard? The finished volume of an 80 bag of Sacrete or Quikrete pre-mixed cement, sand and gravel is 0.
There are 27 cubic feet in a cubic yard. Dividing 27 cubic feet by the volume of the bag will give you the number of bags you need. The bulk of the work for a new DIY concrete slab is in the excavation and form building. If you have to level a sloped site or bring in a lot of fill, hire an excavator for a day to help prepare the site. Then figure on spending a day building the forms and another pouring the slab. How many square feet is 10 yards concrete?
Category: business and finance construction industry. One Cubic Yard of Concrete: 4-inches thick — covers 81 square feet. How many feet is 90 square feet? How do you get a square foot? How do you find a square foot? How many feet equal a square foot? How many yards are in a square yard? How many cubic yards are in a ton? How do you calculate yards? How do I calculate how much concrete I need? How to calculate concrete:.
This 12" x 12" footing needs to be calculated 12" x 16" so the footing is figured to go above grade to reach the 4" slab thickness. This porch has 9 sq. This totals. The porch also has 9 linear feet of 6" step. So enter in the footing calculator, 6" depth by 12" width always figure steps with a 12" width by 9' length.
The total concrete needed for the 3' by 3' porch will be. Granite Construction has an excellent base fill calculator on their site.
Use this to figure how much material you need for the subgrade. A perfectly placed order of concrete will finish the job with a small amount left over. A 20 cubic yard order with 1 cubic yard left over is a good order. A 20 cubic yard order that comes up cubic yard short is not a good order.
It can be upsetting to end up with any extra concrete. You are having to pay for this concrete after all. However, realize you are doing your job a service by ordering enough concrete - which means you are going to have a little concrete left.
Compare the figure with what you came up with. Discuss any variances with the supplier. Your ready mix supplier is invaluable for checking your view of job conditions, checking your margin of safety, identifying issues you may not have thought of, and informing you of any local conditions you need to be aware of.
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