Staircase Concrete
Flight Volume
landing Volume:
Rcc Handrail Volume
Result
after getting volume use below calculator for concrete material calculation
Concrete Material CalculatorHow to calculate staircase volume.
Height of floor = 3 m.
riser = 150 mm = 0.15 m.
tread = 300 mm = 0.3m
No of risers = floor Height/riser = 3/0.15 = 20
No of treads = No of risers - 1 = 20 - 1 = 19
1. Flight volume
flight volume = waist slab volume + steps volume
a. waist slab volume
waist slab thickness = 150 mm = 0.15 m
total run = tread × No of treads = 0.3 × 19 = 5.7 m
wais slab length 'Wl' = √(total run * total run) + (floor Height * floor Height)
=√(5.7 × 5.7) + (3 × 3) = √41.49 = 6.44 m
stair width 'Sw' = 1.2 m.
waist slab volume = waist slab length 'Wl' × waist slab thickness × stair width 'Sw'
=6.44 × 0.15 × 1.2 = 1.159 cum
b. steps volume
steps volume = 0.5 × tread × rise × stair width 'Sw' × No of treads
= 0.5 × 0.3 × 0.15 × 1.2 × 19 = 0.513 cum
flight volume = waist slab volume + steps volume
= 1.159 + 0.513 = 1.672 cum
2. Landing volume
landing width 'Lw' = 1.2 m
landing length 'Ll' = 1.2 m
landing thickness 'Lt'= 150 mm = 0.15 m
landing volume = landing width × landing length × landing thickness
= 1.2 × 1.2 × 0.15 = 0.216 cum
3. Rcc Handrail volume
If handrail is rcc then use below calculation
Handrail height 'h1' = 0.8 m
Handrail thickness = 0.1 m
Handrail volume = Handrail height × waist slab length × handrail thickness
=0.8 × 6.44 × 0.1 = 0.515 cum
Volume of staircase = flight volume + landing volume + handrail volume
= 1.672 + 0.216 + 0.515 = 2.4 cum