Let us now find out the angle or slope of the staircase as shown below.
Type-1:
If the riser & tread are known.
Given data:
Riser = 160mm.
Tread = 250mm.
Slope
= [riser ÷ tread]
= [ 160mm.÷ 250mm.]
= 0.64
Here, slope = tanθ
So,
tanθ = 0.64
θ = tan-1 0.64
= 32.62°
2. Type-2
If the height & horizontal distance of the staircase are known.
Given data:
Height of landing = 1300mm.
Horizontal distance = 2000mm.
tanθ = [opposite ÷ adjacent]
= [height ÷ horizontal distance]
= [ 1300mm.÷ 2000mm.]
= 0.65
θ = tan-1 0.65
= 33.02°
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Thank you for going through these calculation steps❤. Have a good day 😄.
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