Difference between wbm and gsb in road construction
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Answer / surajit dey
Wbm full form is water bound macadam and GSB fullform is granular sub-base.
Is This Answer Correct ? | 151 Yes | 7 No |
Answer / vinothkumar
Gsp is the first layer of the road
Wbm is the second layer of the road
Then different from gsp and wbm for gsp is the basement and 40mm aggregate used
Wbm 21 mm metal used
Is This Answer Correct ? | 12 Yes | 2 No |
1st of all we use gsb & compacted properly.
2. It should be the thickness of 250-500.
3 wbm is used after the laid of gsb.then compacted at dry & again compacted after pouring of water on it.
4. Its thickness should be used 200-250.
Is This Answer Correct ? | 5 Yes | 1 No |
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