Bad Shed

concrete ballast mix for shed base

Using ballast for shed base concrete by: john hi edward, diy concrete is generally mixed by volume and comprises 1 part cement, 2 parts sand and 3 parts coarse aggregate. as you are using ballast which is a mixture of sand and coarse aggregate then the ratio of 1 part cement to 5 parts ballast is correct.. Materials required ballast ballast is usually sold in 25kg bags approximately 2 bags are needed to produce, 1 cubic foot of concrete. example: shed base 8' long x 6' wide x 3" deep the volume = 8' x 6' x 0.25' = 12 cu ft 2 bags per cubic ft = 24 bags add 10%, 3 bags for compacting total 27 bags of ballast cement 1 bag (25kg) of cement mixed. Our concrete calculator allows you to accurately work out the amount of concrete you'll need for your project. simply add the measurements for your concrete order to the relevant shapes above (you only have to fill in the shape/s you want to use) you can build up a concrete calculation for complicated areas by adding additional shapes of each type..

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concrete ballast mix for shed base
Both concrete calculators make an allowance for the fact that ballast etc losses volume when mixed to make concrete. two concrete calculator are provided for different concrete mixes: general mix - 1:5 cement:all-in ballast or 1:2½:3½ cement:sharp sand:gravel. and ; paving mix - 1:3½ cement:all-in ballast or 1:1½:2½ cement:sharp sand:gravel.. In this video we go over how to pour a easy beginner concrete shed slab. we go take you from start to finish on this job of how we accomplished a 8 x 10 shed slab. we also go over some useful tips.

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