Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 1 (Q.No. 39)

Building Materials

39.

Pick up the correct statement from the following:

The theory of formation of concrete is based on the phenomena of formation of voids

The bulking of sand is taken into account while volumetric proportioning of the aggregates

The dry sand and the sand completely flooded with water, have practically the same volume

The expansion and contraction joints are provided if concrete structures exceed 12 m in length

All the above.

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

13 comments Page 2 of 2.

Nischal said: 1 decade ago

Expansion joint is provided for > 45m.

Pawan said: 9 years ago

No, it's 20m for conc. And 45 for rcc.

Zohaib Gilani said: 6 years ago

Good, thanks for explaining @Adebola.

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