How many bags of concrete do I need for a fence post
1 – 4 bagsMost 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 long does it take cement to set
In most cases, standard concrete (or full strength concrete) has a setting time of around one day, sometimes two days depending on the environment in which it is set. However, concrete reaches its full strength after approximately 25-28 days.
Is Postcrete better than concrete
Concrete spurs are ideal for repairing the posts, use postcrete, sets pretty quick and you should only need 1 bag per hole. Concrete blocks will be the easiest for sitting the shed bearers on, or split them in half.
Why deck posts should not be set in concrete
A deck post should always be placed on top of footing, not inside concrete because it can break. The photo on the left shows a post set in a bracket that has been mounted to the top of a footer. … When concrete is poured around a deck post in this way, the post will rot due to moisture buildup by the soil.
How long will a pressure treated post last in the ground
3) A deck built with pressure treated wood will last a long time. Promotional literature promises lifelong performance for pressure treated wood. The Forest Products Laboratory and other research groups have shown that treated wood stakes placed in the ground for more than 40 years remain rot-free.
How long do you let fence posts set
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 use Postcrete for footings
No reason while you can’t use it. If you don’t have enough then mix it in with some more cement/ballast.
What happens if you add too much water to concrete
What happens when you add too much water to concrete and/or other cement mixes? Over-watered concrete may lead to lower strength, reduced durability, shrinkage cracking, and a variety of surface problems. It is critical that the proper amount of water be added to concrete and other cement mixes.
Is rapid set concrete strong
Fast-setting concrete isn’t just simple and fast, it’s also durable and strong, reaching 4000 psi — or pounds of force per square inch —after a month. That’s stronger than the concrete used for foundations on most homes.
How strong is concrete after 1 day
From above table, we see that, concrete gains 16 percent strength in one day, 40 percent in 3 days, 65% in 7 days, 90% in 14 days and 99% strength in 28 days. Thus, it is clear that concrete gains its strength rapidly in the initial days after casting, i.e. 90% in only 14 days.
Can you mix Postcrete in a bucket
No mixing is required. For best results follow these instructions: 1) Dig hole to correct depth and width relevant to post size (see table on reverse). 2) 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).
How many posts will a 20kg bag of Postcrete do
“Usually one bag of postcrete per post is enough, however you can use a two bags per post if you feel this is needed. The instructions are on the bag.”
Will wooden posts rot 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. … The concrete at the top should be sloped away from the post to grade level to avoid water pooling around the base.
Is it OK if it rains after pouring concrete
Heavy rain can cause problems to freshly poured concrete as it can wash out some of the cement from the mix. This can weaken the surface of the concrete, making it a softer consistency and decreasing the strength of the concrete.
Should you wet concrete while curing
ANSWER: Keeping concrete moist helps the curing process. Concrete hardens as a result of a chemical reaction, called hydration, between cement and water, not because it dries. … If too much water is lost from the concrete through evaporation, the hardening process slows down or ceases.
How long will wooden posts last in concrete
Life expectancy of posts now is anywhere from 18 months to 5-7 years max. This then got me thinking that the 100mm x 200mm sleepers I had planned to use to create a bank for the stream – up ended vertically with 1/3 buried in the ground – probably won’t last too long either.
How deep should a 8 foot fence post be
3 feetIn 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.
Should I use 4×4 or 6×6 fence posts
4×4 is perfect for these very standard fence dimensions. Normally 4×6 or 6×6 are needed for gates or extreme wind loads.
How big of a hole do you need for a 4×4 post
about 12 inches wideDig post hole so diameter of the hole is 3 times the width of the post (i.e., the hole for a 4” wood post should be about 12 inches wide). 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).
Is 2 feet deep enough for fence posts
The minimum depth that you should dig your fence post holes for panel sections is 2 feet. A general formula is to dig the holes one-third to one-half of the post’s aboveground height. The deeper you dig the holes, the more stability your fence has, but you must also purchase longer posts.
Should you put gravel under fence post
Gravel is best for fencing in heavier (more clayey) soils, and won’t work well if you have loose, sandy soil. Gravel also allows water drainage around the fence posts, making the posts less susceptible to frost heaves. … When setting fence posts in gravel, you should bury at least one-third of the fence post.