Civil Engineering - Highway Engineering - Discussion
Discussion Forum : Highway Engineering - Section 4 (Q.No. 33)
33.
To prevent movement of moisture from subgrade to road pavement on embankments about 0.6 m to 1 m higher than water table, the thickness of cut off layer of coarse sand used, is
Discussion:
17 comments Page 1 of 2.
Chaitanya said:
4 years ago
In general, sense, if the embankment is already above the water table then there is no need to prevent the sub-grade from moisture, hence it is zero.
@Akshay.
If both are at the same level or if the water table equals or above the embankment then only measures were taken.
@Akshay.
If both are at the same level or if the water table equals or above the embankment then only measures were taken.
(3)
Yogesh said:
6 years ago
Thanks for explaining the answer.
(1)
Rajashri said:
6 years ago
Thanks @Akshay.
Khan said:
5 years ago
15 cm is the correct answer.
Khan said:
5 years ago
15 cm is the correct answer.
Debiprasana said:
5 years ago
Course sand 15cm.
Fine sand 30cm.
Cutoff depth required.
Fine sand 30cm.
Cutoff depth required.
Anirban Roy said:
5 years ago
For this case, the answer shall be 15cm as the code specifies that this capillary cut off in no case shall be at a height less than 15cm from the HFL.
Kcube said:
5 years ago
Sub-grade 0.6-1 m above HFL of the water table and P. Index of subgrade >1.
For Fine Sand Cut-Off Layer = 350mm.
For Coarse Sand=150mm.
For Coarse Gravel=150mm.
Sub-grade 0.6-1 m above HFL of the water table and P. Index of subgrade <1.
For Fine Sand Cut-Off Layer = 300mm.
For Coarse Sand=100mm.
For Coarse Gravel=100mm.
Refer: IRC 34-2011.
For Fine Sand Cut-Off Layer = 350mm.
For Coarse Sand=150mm.
For Coarse Gravel=150mm.
Sub-grade 0.6-1 m above HFL of the water table and P. Index of subgrade <1.
For Fine Sand Cut-Off Layer = 300mm.
For Coarse Sand=100mm.
For Coarse Gravel=100mm.
Refer: IRC 34-2011.
Pawan said:
6 years ago
Thanks @Akshay.
Maratha said:
1 decade ago
The, what is that equals? 10 or 7 cm?
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