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The thickness of the mild steel plates provided in the centring of cement concrete jack floors is ________

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The thickness of the mild steel plates provided in the centring of cement concrete jack floors is ________

(a) 1 mm

(b) 3 mm

(c) 5 mm

(d) 7 mm

The question was asked in an international level competition.

My question comes from Types of Upper Floors topic in chapter Floors and Flooring of Construction & Building Materials

1 Answer

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Best answer
Correct option is (b) 3 mm

Best explanation: The thickness of the mild steel plates provided in the centring of cement concrete jack floors is 3 mm. The centring has a pair of holes at the ends which are spaced at 75 cm c/c. The steel plate is bent in the shape of the arch soffit.

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