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WorksheetsDay 62-Nov 25-worksheet-Btech-Staircase
Total questions: 15
Worksheet time: 12mins
In stairs without stringer beams, when top and bottom risers are supported by beams spanning parallel with the risers, the effective span is taken as —
Clear distance between beams
Overall length of stair slab
Centre-to-centre distance of beam supports
Clear width of landing
When the landing slab spans in the same direction as the stairs, they are considered to act together as —
Two independent slabs
One combined single slab
Plate girder
Waffle slab
For stairs spanning onto the edge of a landing slab which spans parallel with the risers, the effective span is taken as —
Going of stair only
Going + full landing width
Going + half landing width at each end or 1 m, whichever is smaller
Twice the going
In stair design, the loads considered under "dead load of steps" are mainly —
Self weight of steps only
Self weight of steps + floor finish on steps
Self weight of waist slab only
Live load only
In staircases, maximum spacing criteria must be checked for both main and distribution reinforcement.
True
False
When landing slabs span parallel to the risers, the landing does not affect the effective span of the stair.
True
False
The slab provided at the end of a flight to allow change in direction or rest is called the (a) .
Dead load of waist slab is generally calculated per metre (a) of the stair.
Load due to floor finish on the stair is included in the dead load calculations.
True
False
After designing main reinforcement, (a) reinforcement is provided perpendicular to it in waist-slab stairs.
A staircase is supported at each end by the edge of landing slabs which span parallel to the risers. Width of each landing = 2.5 m, going of stair = 2.2 m. Find the effective span.
(a)
A waist-slab stair has 12 steps in one flight. Riser R = 160 mm and tread T = 300 mm. Find the total rise of the flight.
(a)
Choose the correctly matched pair:
A) Going – Vertical distance between steps
B) Riser – Horizontal distance between steps
C) Waist slab – Inclined slab carrying the steps
D) Tread – Vertical face of the step
(a)
The dead load of waist slab is generally calculated on the (a) span of the stair slab.
A waist-slab staircase has waist thickness = 150 mm. Take unit weight of RCC = 25 kN/m³. Find the dead load of waist slab per metre width (on inclined span).
(a)
