How many bags of concrete do I need for a post hole?
How many bags of concrete do I need for a post hole?
Most fence post holes will need between 1 – 4 bags of concrete to securely hold the post in place. The best way to determine the size of the hole is: Diameter of the hole is 3 times the width of the fence post. Depth of the hole is one-third to half the above ground height of the fence post.
How do you calculate concrete post holes?
Calculate Concrete Volume With the volume of the submerged post and the volume of the hole figured out, subtract the post volume from the hole volume, and you will have the volume of concrete needed for each hole. Simply multiply that amount times the number of posts to get a total quantity.
How many bags of quikrete Do I need to fill a post hole?
1 – 4 bags of concrete per fence post are typically what’s needed. This depends on the type of soil, fence design, height, post size and bag weight. In general the depth of the post’s hole needs to be 1/3 to 1/2 of the above ground height of the post.
How much concrete do I need for a 4×4 post hole?
Mix two 50lb bags of concrete with water in a mixing tub or 5-gallon bucket. Add concrete into the hole and around the 4” x 4”. Depending on your climate, let concrete set up for 24 – 48 hours.
How much post mix do I need per post?
How much Post Mix do I need for a fence post? The exact amount of Post Mix Concrete needed will vary depending on the width and depth of the hole, but as a general rule you’ll need about one and a third bags for a standard fence post.
How do you calculate round holes?
Simply multiply the length by the width by the depth or use our simple volume calculator. Circular areas are also easy to calculate. Simply multiply 3.1415 (π) by the radius, by the radius again, by the depth or use our simple volume calculator.
How many bags of cement do I need?
For concrete, the formula for volume is as follows: length x width x thickness. To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield.
What is the best concrete mix for fence posts?
Quikrete Fast Setting Concrete Mix
For a small to mid sized job I recommend going with premixed. The best concrete mix for fence posts I’ve found is Quikrete Fast Setting Concrete Mix in a 50 lb bag. It’s 4000 psi, easy to work with, sets up fast, and doesn’t need to be mixed. Just pour it in the hole and soak with water.
How much ballast and cement do I need calculator?
ballast calculator for concrete:-quantity of ballast for 1m3 concrete is calculated as follows, ballast quantity = 5/6 × 1m3 = 0.833 m3, we know weight of ballast = volume × density, so weight of ballast in kg = 0.833m3 × 1750kg/m3 = 1458kg, if weight of ballast bag is 25kg, then number of bags of 25kg ballast as 1458/ …
How much concrete to use in one post hole?
Spirit level
How to calculate post hole concrete?
Calculate the amount of concrete needed for setting fence post. Enter the required number of holes needed plus the diameter and depth of the hole in inches. Add the size of the post. The results are the volume of concrete needed in cubic feet, cubic yards, and cubic metres
How much concrete per post hole?
Find the radius of the post: radius=diameter/2 4/2 = 2 inches
How many bags of concrete per fence post hole?
Most fence post holes will need between 1 – 4 bags of concrete to securely hold the post in place. For example: A 6′ high fence post 4″x4″ needs a hole 12″ in diameter by about 2′ to 3′ deep. That would take four 50 lb. bags of fast setting concrete mix per fence post.