412,000 kg
None of these
41,200 kg
4,120 kg

## RCC Structures Design A flat slab is supported

On columns
On columns monolithically built with slab
On beams
On beams and columns

l = dt/Sb
l = dt/3Sb
l = dt/2Sb
l = dt/4Sb

## RCC Structures Design If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than

WL/10 (L + 2D/3)²
WL/12 (L - 2D/3)²
WL/10 (L - 2D/3)²
WL/12 (L - D/3)²

## RCC Structures Design If the length of a combined footing for two columns l meters apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where x̅ is the distance of centre of gravity of column loads).

y = L - (l - x̅)
y = L/2 + (l - x̅)
y = L/2 - (l + x̅)
y = L/2 - (l - x̅)