Answer / madhava reddy n

Here in the staire case RISE or RISER means short vertical
portion of the step and TREAD means the short horizintal
portion where we put or feet. The standards of the RISE
is 15 cm or 6" and that of TREAD is 30 cm or 12". Waist
slab means the supporting slab for all the steps which is
usually 10 cm (4") to 15 cm (6") thickness. And lastly
the angle between the floor and the landing should be 22.5
degrees to get the standard size of the steps otherwide we
have to increase or decrease the riser or tread.

Answer / sivasubramanian

Tread is horizontal Portion and Riser is vertical portion.
Tread 10-12 inch & Riser 6-8 inch.

Answer / prabu

tread = 250 - 300 mm
rise = 150 - 200 mm
staircase width = 0.85 - 1.5m
span/depth = 20
depth of stair case slab minimum= 160 mm
angle of staircase= 30 -45 degree
live load on staircase = (5kn/m2 max)

Answer / sjtbehera

tread means where you landing your feet. rest is called rise

standar size is tread=9" and rise = 6"

Waist slab is the platform whsre slab is turned

standar length os stair case is - 6"x15"

last qouestion i donot understand

Answer / suman biswas

tread is the horizontal portion of a step,on which we place our feet
rise is the vertical portion of step supporting the tread
standard size :16cm(rise)*26cm(tread)
the length of stair-case may differ,but the no of steps should not be less than 3 and more than 12 for one flight...
the angle between floor and landing is 30-45 degree

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