Staircase Reinforcement Calculation

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

Read More: HOW TO CALCULATE STEEL QUANTITY FROM DRAWING

Staircase Reinforcement Calculation:

Staircase Reinforcement Calculation
Stair Steel Reinforcement

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
Staircase Reinforcement Calculation
Stair Steel Detail section

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
Staircase Reinforcement Calculation
Stair Steel Reinforcement Details
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

Download Steel Quantity Calculation Excel Sheet:

Read More:

  1. WHICH CEMENT IS BEST FOR HOUSE CONSTRUCTION
  2. WHAT IS FSI? HOW TO CALCULATE AND ITS IMPORTANCE.
  3. ESTIMATION OF A BUILDING WITH PLAN
  4. RCC COLUMN DESIGN
  5. BUILDING ESTIMATION EXCEL SHEET
  6. HOW TO CHECK CEMENT QUALITY ON CONSTRUCTION SITE

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