Please does anyone know how to calculate the volume of concrete produced from a bag of quickset. The sort that's ready mixed and you just add water. I'm putting a fence up and have calculated that I need around 35 litres of concrete per post. Problem is that I don't know what volume you get from a 25kg bag after adding the water.
quick set concrete volume calculation
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About 16 litres.
Most people allow 1.5 bags per post if using a trenching spade or 2 bags per post with a normal spade. Assuming you are digging 600mm down.
Most people allow 1.5 bags per post if using a trenching spade or 2 bags per post with a normal spade. Assuming you are digging 600mm down.
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