In a staircase slab spanning in the direction of flight, the effective span is taken as:
Choose the correct answer
The horizontal distance between walls
Going + nosing at each end
Center to center of supports + landing slab portions
Width of staircase
Correct Answer
C. Center to center of supports + landing slab portions
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IS 456 Annex G: For a staircase slab spanning in the flight direction, effective span = horizontal span from center to center of support (or including landing slab as appropriate). Actual analysis depends on support conditions.
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