Answer / ramiz,guwahati

BECAUSE IN CASE OF ONE WAY SLAB THE LOAD IS TRANSFERED
THROUGH THE SHORTER SPAN ONLY.

Answer / aman kumar gupta

beam is design considering 1m widh .in case of one way slab ,due to the compression in concrete above the neutral axis it expand and contract tension zone below axis.so the shape of the slab do not remaining rectangular but becomes trapezoidal.so in order keep it remain rectangular the remaining concrete develop stress in opposite direction due to which a secondary moment is induced in the slab(negative moment)so the reinforcement is done along shorter span.

Answer / kannan

This is because the deflection of the oneway slab is more
on shorter side. Example if you take 30cm plastic / steel
scale, apply the load longitudanoly, immidiately deflecton
takes place over the particle. Hence to avoid the
deflection of slab, main reinforcements are provided in
shorter span.

Answer / narendra

BECAUSE IN CASE OF ONE WAY SLAB THE LOAD IS TRANSFERED
THROUGH THE SHORTER SPAN ONLY.
AND
IT IS POSSIBLE TO DESIGN IT (MAI STEEL) ALONG LONGER SPANS
TOO BUT THE STEEL REQUIREMENT WILL BE MORE AND HENCE IT
WILL NOT BE VIABLE SOLUTION.9THIS IS THE MAIN REASON.

Answer / abc

the above justification if for beam and not slab

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