Estimate the quantity of cement, sand and gravel needed for the stairs and landings shown below,...

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Estimate the quantity of cement, sand and gravel needed for the stairs and landings shown below, using Class A concrete mixture (40kg/concrete). Use a 5% allowance for wastage. -0.0 THICK CONCRETE LANDINGS 3RD FLOOR 2ND FLOOR 1ST FLOOR ELEVATION OF STAIRS WORE 1.50m 0.15 CONCRETE LANDING ro PLAN TREAD RISER DET. STAIR SECTION Estimate the quantity of cement, sand and gravel needed for the stairs and landings shown below, using Class A concrete mixture (40kg/concrete). Use a 5% allowance for wastage. -0.0 THICK CONCRETE LANDINGS 3RD FLOOR 2ND FLOOR 1ST FLOOR ELEVATION OF STAIRS WORE 1.50m 0.15 CONCRETE LANDING ro PLAN TREAD RISER DET. STAIR SECTION