How big is a Postcrete hole?

Technical Information. Postcrete may be used for the purposes of fixing domestic posts. The amount of Postcrete required will depend on the size of hole and post. For example: 1 bag = square post 10 cm (4”) with a hole 20 cm (8”) wide x 75 cm (30”) deep.

What size hole will Postcrete fill?

Just over one bag per hole should be sufficient, blue circle postcrete suggest 1 bag will fill a 8 x 30 inch hole with a 4x4 post. You're dimensions are slightly bigger than that so better to be safe than sorry and have a bit extra.

What size hole is needed for 4x4 fence post?

The diameter of your post hole should be three times the diameter of your post. So, if you're planning on using a four-inch round or 4x4-inch square post, your post hole will need to be 12 inches in diameter. For a six-foot-high fence post, we would need a hole that's 36 inches deep and 12 inches in diameter.

How big is a standard post hole?

So, a six-foot-high finished post ideally needs to be buried three feet into the ground. You may be able to get away with two feet depending on the weight of your fence, soil conditions and local climate. Additionally, the diameter of your post hole should be three times the diameter of your post.

How much Postcrete do you need for one 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. A gate post, which works harder than a fence post due to the movement of the gate, may require three or four bags.

How to Dig, Set and Concrete Fence Posts

How many posts does 20kg Postcrete do?

depends how 'good' are your holes. you will need minimum 1 bag per post. I usually use one and a half per post but I am using 25kg bags. often poscrete is in 20kg bags so 2 per post is more likely.

Is one bag of Postcrete enough for one post?

The amount of Postcrete required will depend on the size of hole and post. For example: 1 bag = square post 10 cm (4”) with a hole 20 cm (8”) wide x 75 cm (30”) deep. Please refer to Product Datasheet for more details. Postcrete may not be used for general concreting, screeds, mortar, grout or render.

Is 8 inch hole big enough for fence post?

Dig your holes about 8 inches in diameter if you're using the same posts and backfilling with soil and gravel. One rule of thumb is to make the holes three times wider than the post width, or about 10 1/2 inches for four-by-four posts. Not all fence installers use concrete to set the posts, but the vast majority do.

Is 2 feet deep enough for fence posts?

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).

How deep should a 7 foot fence post be?

How Deep Should a Fence Post Be? For an average fence post, about 6 to 8 feet tall, prepare to dig a post hole about 2 feet deep. To install a fence post, you'll need a shovel or post digger, a 6-foot level, soil, and gravel or crushed stone.

How much concrete do I need for a 4x4 fence post?

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.

What's the difference between concrete and Postcrete?

Depending on its application, traditional concrete can take between 24-48 hours and 7 days to set properly and will reach its optimum strength after 25-28 days. Postcrete, on the other hand, is the name given to a post mix concrete, which is a ready to use blend of concrete ingredients that requires no mixing.

How long should you leave Postcrete to set?

How long does it take for Postcrete to set? After adding water to the mix, Postcrete usually sets in 5-10 minutes, with the solution beginning to stiffen within 1-2 minutes.

How deep should a 6ft fence post be?

The width of the post hole should be 3 times the width of diameter of the post. For example, if you are erecting a 6 foot high fence using 4 inch fence posts, the posts need to be 6 feet above the ground. 6 divided by 3 is 2, therefore the depth of the hole required is 2 feet.

How deep should a 5ft fence post be?

Lawsons experts recommend you should dig a hole which has a depth of 2 ft (24 in / 600mm) to ensure you have a stable timber or concrete fence post.

How far apart do you set fence posts?

Most fence posts can be spaced 8 to 12 feet apart. While this is a general criteria, it doesn't cover all scenarios. For instance, high tensile fence can have larger spacing, requiring line posts every 15 to 20 feet for field fence styles, and as much as 20-30 feet for high tensile barbed and smooth wire.

How big of a hole do I need for a 8x8 post?

What size hole for 8×8 post:- as per thumb rule and guidelines, for a 8 foot high 8″ × 8″ (200mm × 200mm) size post, you will need atleast hole size of 3 ft (36″) deep and 2 feet (24″) wide in square shaped.

How do you calculate concrete post holes?

Calculate how many yards or how many bags of concrete you'll need for a set of post holes by entering the post diameter and hole size. If you're not sure what size hole to dig, a rule of thumb is to use a hole diameter three times the post diameter and ¹⁄₃ as deep as the post height.

Can you add water to Postcrete?

Fill hole with water to a third of the depth. 3. Pour in POSTCRETE evenly around post until no standing water is visible (powder completely covers water surface). Sprinkle water on top of powder.

Can I use Postcrete as a foundation?

It will set in a day. You would be better advised to lay the foundation one weekend and build the wall the next.... Postcrete should just be used for setting fencing posts,not really suitable for anything else.

How many 20kg bags of ready mix concrete do I need?

How many bags of concrete per m2. Generally, there are 11 bags of 20kg premixed concrete per m2. 1 square metre of concrete at 100mm deep weighs 220kg, so, number of bags of 20kg of concrete per m2 = 220 ÷ 20 = 11 bags. Thus, you will need 11 bags of 20kg concrete per square meter.