Concrete

There are many concrete mixes within construction, however as a basic rule of thumb use this mix when laying bases for

patios, foundations for walls, paths and hardstand areas etc.

The mix needed will consist of;

1. 1 part cement.
2. 3 parts sharp sand.
3. 6 parts chippings.

The amount of water added will be self evident but add cautiously as the mix can become sloppy, fairly quick.

The quantity guide is measure length x width x depth = volume.
Multiply this figure by 2 to give you the weight of material.

Example 1
A trench 6 metres x 300mm x 100mm = .18 (x 2 = .36 tonnes).

Example 2
A patio 5 metres x 4 metres x 150mm = 3 (x 2 = 6 tonnes).

Each figure is divided into 1 part cement, 3 parts sharp sand and 6 parts chippings being a 1:3:6 mix.

If in any doubt always give your measurements to your builders merchant and have them calculate these quantities for you.

Anything more than a bucket-full is hard to mix by hand so invest in a mixer!

Mixed correctly, it will give you an excellent concrete base for stonework and brickwork.

Mike Lyons.....Any questions! Please contact me.

I'd welcome your comments, tips and suggestions, for more information click here

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