RCC STRUCTURES DESIGN QUIZ

Dimensions of a beam need be changed if the shear stress is more than

15 kg/cm²

20 kg/cm²

10 kg/cm²

25 kg/cm²

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The maximum shear stress (q) in concrete of a reinforced cement concrete beam is

Shear force/(Lever arm × Width)

Lever arm/(Shear force × Width)

Width/(Lever arm × Shear force)

(Shear force × Width)/Lever arm

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In a combined footing if shear stress does not exceed 5 kg/cm², the nominal stirrups provided are

12 legged

8 legged

10 legged

6 legged

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The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is

30

35

40

25

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On an absolutely rigid foundation base, the pressure will

Be zero at the centre of the foundation

Be uniform

Not be uniform

Be more at the edges of the foundation

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Based on punching shear consideration, the overall depth of a combined footing under a column A, is

None of these

(Perimeter of column A × Safe punching stress)/(Load on column A × Upward pressure × Area of the column)

(Area of the column A × Safe punching stress)/Load on column A

(Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)

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An R.C.C. roof slab is designed as a two way slab if

The ratio of spans in two directions is less than 2

The slab is discontinuous at edges

The slab is continuous over two supports

It supports live loads in both directions

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The maximum diameter of a bar used in a ribbed slab, is

20 mm

6 mm

22 mm

12 mm

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The horizontal portion of a step in a stairs case, is known as

Tread

Winder

Flight

Rise

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The neutral axis of a T-beam exists

Below the slab

At the bottom edge of the slab

Within the flange

All listed here

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