# Staircase Reinforcement Calculation

Staircase Reinforcement Calculation

Definition: A staircase is defined as set of steps from one floor to another floor or combination of riser and tread to make easy transportation from one floor to another floor in a building.

### Various Components of Stairs:

• Step
• Riser
• Going
• Flight
• Landing
• Nosing
• Line of Nosing
• Winders
• String or Stringers
• Newel Post
• Soffit
• Baluster/Spindle
• Railing
• Handrail

### Staircase Reinforcement Calculation:

Staircase Reinforcement Calculation

 Sr. No. Item Description No. Length (m) Widht/ Breadth (m) Height/ Depth (m) Quantity 1 RCC Work (1:1.5:3) Including Centering and Shuttering but excluding Reinforcement i) Base on Toe Wall:  H = 0.23 + 0.05 + 0.025      = 0.305 m 1 1.00 0.30 0.31 0.09 cu.m ii) Waist Slab of Flight: L = √(2.75²+1.65²) = 3.21 m 2 3.21 1.00 0.15 0.96 cu.m iii) Landing(Middle & First Floor) B = 1.20 + 0.15(Bearing)    = 1.35 m 2 2.30 1.35 0.15 0.93 cu.m iv) Steps without nosing 2*11 1.00 1/2*x 0.25 0.15 0.41 cu.m
 2 20 mm Cement Plaster(1:6) in Steps: Tread 2*11 1.00 0.25 5.50 Rise 2*11 1.00 0.15 3.30 Ends of Steps 2*11 1/2*0.25 0.15 0.41 Inner edge of waist slab 2 3.21 0.15 0.96 Total 10.17 cu.m 3 2.5 cm nosing in steps in 1:3 Cement Mortar 2*12 1.00 24.00 Run.m 4 2.5 cm C. C. Floor Finishing for middle and first floor landing 2 2.30 1.20 5.52 sq.m 5 M.S ornamental grill for railing 2 3.21 1.00 6.42 sq.m 6 Ornamental wooden hand Rail 2 3.21 24.00 Run.m

Read More: ESTIMATION OF A BUILDING WITH PLAN

Staircase Reinforcement Calculation

 7 Reinforcement: Main Steel 100 dia. @ 120 mm c/c i) Lower flight and landing: 10 4.99 @ 0.62 30.94 Kg L = 3.21 + 0.3(at toe) + 1.2  + 2x9x0.010(hook) – 2×0.025(cover) = 4.99 m No. of Bars = (1/0.12) + 1 = 9.33 =10 ii) For upper flight, middle and     first floor landing 10 6.04 @ 0.62 37.45 Kg L = 0.15+1.2+3.21+1.2+0.15+2x9x0.010         – 2×0.025   = 6.04 iii)  Top bars ( 10mm dia.) in middle and First floor landing. L = 0.15 + 1.2 + 47 x 0.010(Ld) + 2x9x0.010 – 0.025           = 1.98 m 2*10 1.98 @ 0.62 24.55 Total 92.94 Kg
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 7 Reinforcement: Main Steel 100 dia. @ 120 mm c/c i) Lower flight and landing: 10 4.99 @ 0.62 30.94 Kg L = 3.21 + 0.3(at toe) + 1.2  + 2x9x0.010(hook) – 2×0.025(cover) = 4.99 m No. of Bars = (1/0.12) + 1 = 9.33 =10 ii) For upper flight, middle and first floor landing 10 6.04 @ 0.62 37.45 Kg L = 0.15+1.2+3.21+1.2+0.15+2x9x0.010 – 2×0.025   = 6.04 iii)  Top bars ( 10mm dia.) in middle and First floor landing. L = 0.15 + 1.2 + 47 x 0.010(Ld) + 2x9x0.010 – 0.025           = 1.98 m 2*10 1.98 @ 0.62 24.55 Total 92.94 Kg