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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 many 80lb bags of concrete do I need for a post hole?
Complete calculation: For reference, a 40-pound bag of concrete typically yields about 0.3 cubic feet, a 50-pound bag yields 0.37 cubic feet, a 60-pound bag yields 0.45 cubic feet, and an 80-pound bag yields 0.6 feet. This means that in the example above, each post would require about eight 50-pound bags.
How much concrete do I mix per post?
Our example post will require two bags for every post if you’re using fast-setting concrete. Fast-setting concrete is ideal for installing fence posts since it doesn’t need to be mixed in a bucket or a wheelbarrow.
How much will an 80lb bag of quikrete cover?
30 cubic feet, 60 pounds of concrete mix yields . 45 cubic feet and an 80-pound bag yields . 60 cubic feet.
How many bags of cement do I need for a 6×6 post?
As I recall, a 60# bag of concrete is about . 5cf, so you’d need 3 bags per hole.
How much quikrete does it take to fill a post hole?
The depth of the hole should be 1/3-1/2 the post height above ground (i.e., a 6-foot tall fence would require a hole depth of at least 2 feet). Add about 6 inches of QUIKRETE All-Purpose Gravel into the bottom of the hole.
How many bags of concrete do I need for a deck post?
In order to have enough concrete for one cubic foot, you’ll require 2.2 bags of 60-lb concrete. Since bags are only sold in whole (not half, or quarter) quantities, you’ll need to purchase three (3) 60-lb. bags for one cubic foot.
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.
Is 2 feet deep enough for fence posts?
2 feet is the minimum depth that you should dig your fence post holes for. To dig the holes one-third to one-half of the post’s aboveground height, is a general formula. The deeper you dig the holes, the more stability your fence has.
How many bags of concrete do I need for a 4×4 fence post?
It’s right for a 4×4 fence post to have 1 bag per hole. The depth of the post hole should be half of the post height. For a 6′ above ground post, place 3 feet in the ground and use a post with an overall height of 9 feet.
How many cubic feet does a 80lb bag of concrete cover?
6 cubic feet for an 80 lb bag. The first thing you need to know is the “density” of the concrete.
How many 80lb bags of concrete do I need for a 10×10 slab?
Regarding this, “how many bags of concrete do I need for a 10×10 slab?”, at 4 inches thick, generally you will need approximately either 74 bags of 60lb or 56 bags of 80lb premixed concrete for a 10×10 slab, at 5 inches thick slab, either 93 bags of 60lb or 70 bags of 80lb premixed concrete are required, while at 6.
How many bags of concrete do I need for a 12×12 slab?
Regarding this, “how many bags of concrete do I need for a 12×12 slab at 4 inch thick?”, its depend on thickness of slab, at 4 inches thick, generally you will need approximately either 104 bags of 60lb or 80 bags of 80lb (1.76 cubic yards or 47.52 cubic feet or 1.35 m3) of premixed concrete for a 12×12 slab.
How deep should 6×6 post be?
In general, the holes should be at least 3 feet deep for posts that protrude 8 feet or more above the level. Inserts that extend 6 feet above the ground should have holes that are at least 2.5 feet deep.
What size hole to dig for 6×6 post?
Dig, align, and finish the job Dig an 8″-diameter hole at least 6″ deeper than your area’s frost line for each 4×4 post, using a power auger, hand auger, or post-hole digger. A 6×6 post requires a 10″-diameter hole. Shovel a 6″ layer of gravel into the hole to provide drainage.
How much concrete does it take to fill a hole?
Regarding this, How much concrete do I need to fill a hole, if you are filling a round hole of 12 inch diameter and depth of 24 inch in the ground to set a concrete, generally you need around 1.57 cubic feet or 0.058 cubic yards of concrete.
How deep should I bury a 20 foot post?
The general rule of thumb when setting a post is that the depth of the post’s hole needs to be one-third to one-half of the actual above-ground height of the 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.
What kind of concrete do you use for deck footings?
Decks and other permanent structures require deck supports and footings made from structure strength concrete mix. QUIKRETE 5000 is recommended for footing applications because of its heavy duty, 5000 PSI strength. Add the QUIKRETE 5000 concrete mix to the form.
How deep should I dig for a deck post?
Set footers a minimum of 6” below the frost line for your area to prevent movement during freezing temperatures. Pour about 6 inches of all-purpose gravel into postholes and pack the gravel tight by using the end of a wooden post.
Should deck posts be set in concrete?
A deck post should always be placed on top of footing, not inside concrete because it can break. Concrete tends to absorb moisture and wood expands when it gets wet, so these two factors combined will result in the wood breaking the concrete.
