Concrete quantity calculation is the first step of the process of building a concrete staircase. People need to know how much of the needed materials should they buy so the construction would go without problems. But, this is a huge mathematical process, showing the dimensions of the stairs and the way they’re gonna be build. Only this way they can calculate the need of the materials for the construction.

Concrete Quantity Calculations The images will show you the calculations on the piece of paper and the link bellow will explain it better.

**Staircase quantity**

**R.C.C. work (staircase)**

**Base Toe wall**

L X B X H 1.10 x 30 cm x 23 cm 1.10 x 0.30 x 0.23 = 0.076 cu. Meter

No. of Toe wall is one

Therefore, total volume of Toe wall = 0.076 x 1 = 0.076 cubic meter

Waist slab of flights

Volume = L X B X H

__Length of waist slab =__

Length of waist slab = L = 3.05 meter Breadth of waist slab = 1.15 meter

Adding bearing 15 cm 1.15 cm + 1.15 cm = 1.30 meter

Thickness of waist slab is 15 cm.

Therefore, volume of waist slab = L X B X H

Volume of waist slab = 3.05 x 1.30 x 0.15

Volume of waist slab = 0.594 m3

No. of waist slab is 2

Therefore, volume of waist slab = 0.594 x 2 = 1.190 m3

**Landings**

Length of landing = 2.30 meter

Add 15 cm bearing both ends

i.e. = 2.30 + 15 cm + 15 cm = 2.60 meter

Breadth of landing is 1.15 cm

Add 15 cm bearing as per drawing

i.e. = 1.15 cm + 15 cm = 1.30 meter

Thickness of landing slab is 15 cm i.e. 0.15 meter

Therefore, volume of landing = L X B X C

Volume of landing = 2.60 x 1.30 x 0.15

Volume of landing = 0.507 meter

No. of landing is 2

Therefore, total volume of landing = 0.507 x 2 = 1.014 cubic meter

**Steps without slanting**

Length of steps without slanting

= 2.3 m / 2 (As per drawing)

= 1.15 meter

Breadth of steps without slanting

= ½ x 0.25 (Triangle formula)

= 0.125 meter

Height of step without slanting is 16 cm

i.e. 0.16 meter

therefore, volume of step without slanting = L X B X H

volume of step without slanting = 1.15 x 0.125 x 0.16

volume of step without slanting = 0.023 m3 (cubic meter)

no. of steps is 20

therefore, total volume of steps without slanting = 0.023 x 20 =0.460 m3

steps with slanting’s

length of steps with slanting’s

= 2.3 m / 2 (As per drawing)

= 1.15 meter

Breadth of step with slantings

= ½ x 0.03 ( ie. 0.28 – 0.25 = 0.03) = 0.0153 meter

Height of step with slantings is 16 cm i.e 0.16 meter

Therefore, volume of step with slanting = L X B X H

Volume of step with slanting = 1.15 x 0.0153 x 0.16

Volume of step with slanting = 0.00281

No. of steps with slanting is 20

Therefore, total volume of steps with slanting = 0.00281 x 20 = 0.055 m3

Total volume of staircase is = 0.076 + 1.190 + 1.014 + 0.460 + 0.055

Total volume of staircase is = 2.765 m3 (cubic meter)