How many bags of ballast to make a x 4 shed base?

To determine how many bags of ballast you'll need for a 4x shed base, first calculate the volume of the base in cubic meters. For example, if the base is 4 meters long, 4 meters wide, and 0.1 meters deep (10 cm), the volume would be 1.6 cubic meters. If a standard bag of ballast covers about 0.01 cubic meters, you would need approximately 160 bags of ballast for that depth. Adjust the depth accordingly to calculate the exact number of bags needed.