# Calculating Cement, Sand, and Gravel for Platform Construction

What are the steps to compute for the cement (bags), sand (cu.m.), and gravel (cu.m.) required for the platform shown in the data?

To compute for the cement (bags), sand (cu.m.), and gravel (cu.m.), we need to calculate the volume of each shape and then add them together. Then, we can use the appropriate ratios to determine the quantities of cement, sand, and gravel required.

## Calculating Volume of Each Shape

**Shape G:**Length: 300 mm Width: 500 mm Height: 4000 mm Volume of Shape G = (300 x 500 x 4000) / 1,000,000 Volume of Shape G = 60 cubic meters

**Shape C1:**Length: 400 mm Width: 400 mm Height: 3200 mm Volume of Shape C1 = 0.512 cubic meters

**Shape C2:**Length: 300 mm Width: 300 mm Height: 3200 mm Volume of Shape C2 = 0.288 cubic meters

**Shape B1:**Length: 300 mm Width: 400 mm Height: 400 mm Volume of Shape B1 = 0.048 cubic meters

## Calculating Total Volume

Total Volume = 60 + 0.512 + 0.288 + 0.048 Total Volume = 60.848 cubic meters## Estimating Cement, Sand, and Gravel

**Cement:**Cement (bags) = Total Volume / 0.0347 Cement (bags) ≈ 1758 bags

**Sand:**Sand (cu.m) = Total Volume * (2/6) Sand (cu.m) ≈ 20.2827 cubic meters

**Gravel:**Gravel (cu.m) = Total Volume * (3/6) Gravel (cu.m) ≈ 30.424 cubic meters Please note that these calculations are based on assumptions of standard mix ratios and bag sizes. Actual requirements may vary depending on specific mix designs or project specifications.