Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 3 (Q.No. 21)
21.
Pick up the correct statement from the following:
Corrugated sheet iron is made by passing plain sheets between grooved rollers
Strength and stiffness of corrugated sheets are considerably increased
Corrugated sheets are generally gal-venised to protect iron from corrosion by rust
Corrugated sheets are generally used on slanting roofs
all the above.
Answer: Option
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Discussion:
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NICE C said:   19 hours ago
Corrugated sheet iron is made by passing plain sheets between grooved rollers.
Correct — this process creates the wavy (corrugated) pattern.

The strength and stiffness of corrugated sheets are considerably increased
Correct — corrugation increases load-bearing capacity.

Corrugated sheets are generally galvanised to protect iron from corrosion by rust.
Correct — zinc coating prevents rusting.

Corrugated sheets are generally used on slanting roofs.
Correct — their shape allows easy rainwater drainage.

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