7. After completing work on the highway you get sent to Adelaide to work alongsi

Question

7. After completing work on the highway you get sent to Adelaide to work alongside a local building inspector. Whilst travelling through a new subdivision, you repeatedly come across homes where cracking is evident in suburban walls. a. What is a probable cause of such cracking? b. You take a sample of soil and the average grain size is 0.001 mm. Estimate the specific surface area of this soil? c. What sort of material might it be d. Draw the composition of this material andxplain why it probably exhibits such properties?

Explanation / Answer

A. Following are reasons for cracks in walls

-Cold weather- because shrinkage increases

- bad foundation- uneven settling. This may be also because of soil.

- too much load from structure members

- too much moisture.

since all structure were found cracked, weather condition or soil settlement must be reason.

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