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.
How much cement does it take to fill a post hole?
Summary: How Many bags Of Concrete Per Fence Post? 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 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 much concrete do I need for post base?
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.
Can you put dry concrete in a post hole?
Fast-setting concrete is ideal for setting posts because there’s no mixing—you simply pour the dry concrete from the bag right into the hole, then add water.
How many bags of concrete do I need for a 4×4 slab?
As per calculation, for a 4×4 slab at 4 inch thick, generally you will need approximately either 12 bags of 60lb or 9 bags of 80lb of premixed concrete, at 5 inches thick slab, either 15 bags of 60lb or 11 bags of 80lb premixed concrete are required, while at 6 inches thick slab, either 18 bags of 60lb or 14 bags of
What happens if you add too much water to quikrete?
When a concrete mixture is too wet, it causes a greater amount of shrinkage during the drying process than is needed. As a result, the concrete has a great likelihood of cracking and for those cracks are likely to be a fairly good size.
How deep should an 8 foot post be in the ground?
In general, holes should be at least 3 feet deep for posts that extend 8 feet or more above ground level. Posts that extend 6 feet above ground level should have holes at least 2 1/2 feet deep.
Can pressure treated posts be set in concrete?
Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow.
How do you calculate concrete for a round hole?
To find cubic metres needed to fill a round hole
- EXAMPLE: How much concrete is needed to fill 5 holes 1200mm deep and 1050mm round?
- ANSWER: One hole takes 1.039 cubic metres, therefore 5 holes = 5 x 1.039 = 5.195. ( say 5.2 cubic metres)
- NOTE: When the Diameter of a hole is doubled, it takes 4 times more concrete.
How much concrete do I need for a 10×10 slab?
The amount you will need for a 10 x 10 slab is 1.3 cubic yards, we always add an extra 10% to allow for any slab depth variations or spills that may occur.
How do you figure concrete for a circle?
Circular Slab Concrete Calculator
- Area A = π * D² ÷ 4.
- Perimeter P = π * D.
- Volume V = π * D² ÷ 4 * (d ÷ 12)
- Area.
- Perimeter.
- Volume.
Can I pour concrete in a hole full of water?
The reason we don’t recommend pouring concrete in a hole full of water is that concrete can actually set under water – and not just concrete, the aggregate as well. If you look at the density of the three (water, concrete, and aggregate), you will find that aggregate is the first to settle.
How much sand and cement do I need for fence posts?
In terms of the ratio to use for a concreting fence posts, the best mix is a mix of 1:2:4 (1 cement, 2 sand, 4 aggregate). Concrete is always best mixed using a cement mixer to ensure it’s even, but if you only need to mix a little, hand mixing is ok (see mixing concrete project above for tips on how to do this).
How many square feet does a 50 lb bag of quikrete cover?
Regarding this, how much does a 50 lb bag concrete cover?, as 133 lb concrete = 1 CF, so a bag of 50 lb concrete = 50/133 = 0.375 CF, therefore, a 50 lb bag of concrete approximately cover around 1.5 square feet area upto standard depth of depth of 3 inch for your patio and sidewalk.
How many bags of concrete do I need for a 10×8 slab?
Regarding this, “how many bags of concrete do I need for a 10×8 slab?”, at 4 inches thick, generally you will need approximately either 58 bags of 60lb or 45 bags of 80lb of premixed concrete for a 10×8 slab, at 5 inches thick slab, either 73 bags of 60lb or 56 bags of 80lb premixed concrete are required, while at 6
How many square feet does an 80 lb bag of concrete cover?
How much does a 80 lb bag concrete cover? Regarding this, “how much does a 80 lb bag concrete cover?”, as 133 lb concrete = 1 CF, so a bag of 80 lb concrete = 80/133 = 0.60 CF, therefore, a 80 lb bag concrete approximately cover around 3.6 square feet area upto depth of 2 inch.
How much water do you put in a 50 pound bag of Quikrete?
about 1 gallon
Pour water into the dry mix until the powder is saturated with water. Depending on soil conditions, this will require about 1 gallon (3.8 L) of water per 50 lb (22.7 kg) bag. For holes deeper than 2′ 6″ (0.8 m), place the material in lifts of 2′ 6″ (0.8 m) or less to allow water to soak all the way through. 4.
Is Quikrete as strong as regular concrete?
To wrap things up, to answer the question is Quikrete as strong as regular concrete, the answer is yes. Quikrete has similar compressive strength to standard concrete mix once the curing process is complete, which takes place significantly faster for Quikrete.
Will concrete cure in wet ground?
Damp ground will not be a problem unless is can not support the weight of the concrete. Cement/concrete does not “dry” , it cures , a chemical reaction. It absorbs water to cure, as noted , some concrete applications are sprayed with water to aid the cure.
How many bags of Postcrete do you need per post?
“Usually one bag of postcrete per post is enough, however you can use a two bags per post if you feel this is needed.
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