Pipe Culvert
Pipe Culvert
Pipe Culvert
By
CH. VENKATARAMAIAH
(1) A pipe culvert is normally proposed where
a canal with a discharge of 1 cumec to 1.5
cumec crosses the village/ Z. P / R & B
roads. In case the number of rows of pipes
exceeds 2 the pipe culvert may not be
economical. In such cases the slab culvert
may be economical. The culvert shall be with
full formation width of road as per IRC
recommendation.
(2) Pipe
Figure A
Where bed rock or boulders strata is met with at
the pipe invert level, the excavation shall be
taken down at least 200 mm below the bottom
of pipe. The bed shall be cleared and the space
shall be filled with well graded sand or granular
material free from stone or fragmented material,
shaped to the requirement and thoroughly
compacted to provide adequate support for the
pipe Figure B.
(4) Trench:
Figure C
(5) Jointing:
Area of pipe = Q/ 2 x Vn
where Q = discharge of canal, Vn = normal
velocity in the canal.