State any two merits and demerits of WBM road.

State any two merits and demerits of WBM road.
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1 Answer

Answer :

Merits of WBM roads: 

1) If in good condition, it can take a composite traffic of about 900 tonnes per lane per day

2) If WBM surfacing is maintained properly, it is found to have good service for a long-time.

3) Their initial cost is low.

4) They make use of the locally available materials.

Demerits of WBM: 1) The maintenance cost is more.

2) If not maintained properly, then it causes inconvenience and danger to traffic.

3) They are permeable to rain water and it leads to the softening and yielding of materials

4) Life is less
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