How to do concrete foundations

Concrete work



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Backyard Shed - Concrete Foundations

Do you know the benefits of using a concrete foundation for your shed? After you read this article, you will know the advantages and disadvantages of using a concrete foundation for your new backyard shed.

A concrete foundation will not be for every do it yourselfer because it is lots of work to install. You might need to get a professional in to do it for you. You will need to dig up and level an area, frame in where you are going to put the foundation and prepare the concrete.

There is a lot of heavy work involved, however there are some huge advantaged to using a concrete foundation for your backyard shed.

Here are the major advantages of using concrete:

Foundation/Floor:

One of the best reasons for using concrete is that it provides you with a foundation and a solid floor, which is much stronger than a wood flood. You will be able to bring heavy equipment in to work on it if you need to like lawn mowers, tractors or even your car to change the oil.

Low maintenance:

If you build it right then there will be very little maintenance. Just sweep it and it's clean. It will not soak up oil and grit like a wood floor will. You can also hose it down to get it clean.

A good way to protect your shed is to make the foundation a little bigger than your shed protecting it from your weed eater. Picture for a moment the last time you got a little too close to you house and with your weed eater. Do you want your shed to look like that?

A concrete foundation will make your storage shed last longer by adding protection from moisture coming up from the ground.

Strength:

The elements are no match for concrete with its durability. When prepared and building with quality concrete it will even out last your shed. If you are going to build it yourself, make sure the ground is compacted hard before pouring it to help prevent cracking.

Accessibility:

Because you can build the concrete foundation almost ground level you will not need a ramp to get in. If you do need a ramp make it out of concrete for maximum strength. It's very convenient to have a concrete floor that is so close to the ground because it makes pushing in heavy things like a full wheelbarrow or lawn mower very easy.

One of the down sides to a concrete foundation is that you will not be able to move it. Although a concrete base is much stronger than other foundations it takes a lot more work and will cost more to build. I suggest using a concrete foundation for your backyard shed to provide maximum strength and protection.

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Concrete Foundations for Smaller Walls

I suppose, like I was a few years ago, that you've stood outside admiring the garden that you painstakingly put together from scratch, and thought that a nice wall around it would add the finishing touches. This article is meant to help with the foundation for a wall, as, believe me, if this isn't done properly, the wall itself will not last for very long. It's fairly straightforward--a bit of digging trenches, and some mixing, pouring and levelling of concrete. The tools you'll need include a spade, maybe a pickaxe for harder ground, string lines, levelling board, and spirit level.

Before starting to dig any trenches, however, there are a couple of points to be taken into consideration. You shouldn't dig any trenches too close to the house, as they could undermine the building. This is especially so in the case of older houses, where concrete might not have been used in the foundations. Also, check with your local Authority to see if you need planning permission. I've heard of instances where they have insisted on walls being demolished because of the fact that planning permission was not sought beforehand.

For single thickness walls, which are 100mm (4in) thick, 300mm (12in) strip foundations should be adequate. For double thick walls, you'll need to dig out a trench about 450mm (18in) wide. Remember that for a single thickness wall over 450mm (18in) high, you'll need to build piers alongside it every so often to strengthen it. Those should be about 1.8m (6ft) apart, and you should widen the trench by 200mm (8in) to accommodate them. Dig down about 350mm (14in) or further until you find hard ground. You should begin the brickwork below ground level, so the top of your concrete should be set accordingly. If it's going to be a fairly long wall, it might be worth your while hiring a skip. You can get rid of the soil straightaway, so that it won't be in your way later on. If the ground has a slope in it, you'll have to step the foundations--work out the height and the length of each step by using the size of the bricks that you're going to use, plus allowing a bit extra for the mortar joints and beds. If you're going to have a 90 degree angle in your wall, use a builder's square, (remember your geometry from schooldays), which has sides of 3:4:5

For the concrete, you can use ready mix, but it can be expensive if you're doing a large area. You can easily mix your own, using ballast that is made up of gravel and sharp sand along with ordinary cement. For a small amount of concrete, you can mix it by hand, but if there's a large area, it's probably better to hire a mixer. If mixing by hand, have your ballast on concrete or a sheet of plywood, so that it will be easier to shovel. Set some bricks at the required height (top of the foundation) a couple of metres apart, tip in your concrete, working it in with a spade to get rid of any air bubbles, and use a stout piece of wood to smooth it out between the bricks. Repeat this for the whole length of the foundation.

Remember that weather conditions can affect your well-laid plans. If you're not going to lay the concrete straightaway, it's advisable to cover the trench with boards and sheeting to keep the rain off.

In the unlikely event of the weather being too hot when, or just after, laying the concrete, cover it with damp sacking. Frost can be lethal as well--it can cause newly laid concrete to crack. If you do reckon that there's frost in the air, cover it with straw as a precaution. Allow it to harden for about 10 days before starting to build on it.

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