How long does concrete take to set in a post hole and a deck?

The product will harden initially in 15 minutes. Allow the Rapid Set Concrete to harden for at least 1 hour before removing the bracing supports. It is recommended to wait for 24 hours before affixing anything to the post.

How long does quikrete take to set in a post hole?

20 to 40 minutes
The concrete sets up in 20 to 40 minutes, so you can quickly move on to the next stage of the project (a great convenience when setting fence posts) or backfill the hole to finish the job. Under normal curing conditions, you can apply heavy weight to the post (a basketball backboard, for example) after just 4 hours.

Why do you put dry concrete in a post hole?

When the concrete is dry-poured then wetted, there are no gaps around the concrete between the post or the soil, which helps negate any erosion that may cause the post to lean. We care less about having a maximum PSI footing and more about having a very tightly-packed hole to keep the post level.

How long should you let fence post set in concrete?

Typically, you can apply some weight to the posts after 4 hours, but it’s a good idea to wait at least 24 hours before resuming fence construction. Standard concrete mixes may take up to two hours to set and should cure for 24 to 48 hours before any forces are applied to the posts.

Can I drive on concrete after 3 days?

Your new concrete is designed to reach 90\% of its full strength potential after 7 days, so feel free to drive your personal vehicle on it then. It will take additional time before you can drive or park heavy equipment or machinery on your newly poured concrete, so make sure to wait at least 30 days.

How long does concrete take to set?

Concrete typically takes 24 to 48 hours to dry enough for you to walk or drive on it. However, concrete drying is a continuous and fluid event, and usually reaches its full effective strength after about 28 days. Here are some of the basic facts regarding the question of concrete drying time.

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 big of a hole do I need for a 4×4 post?

12 inches
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 4×4-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 long does it take concrete to set a post?

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. The concrete sets up in 20 to 40 minutes, so you can quickly move on to the next stage of the project (a great convenience when setting fence posts) or backfill the hole to finish the job.

How do you set fence posts in concrete?

Whether you’re building a new fence or anchoring a play structure, setting the posts in concrete is the best way to make sure they’ll stand straight and true for many years. 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 much water do you add to PostPost concrete?

Post was set and concrete mix based on the manufacturer’s recommendation for water. This was 3 quarts per 80 lb bag. A little water was added during mixing because of workability issues, but not much. Hole was backfilled with concrete mix to grade and concrete was tamped in with a shovel during the entire process.

How deep do you dig post holes for fence posts?

Dig the post hole, making it three times the width of the post and at a depth equal to 1/3 to 1⁄2 of the above-ground length of the post, plus 6″ (right). For loose or sandy soil, using a tube form is recommended (left).