Irrigation works : $b the principles on which their design and working should be based, with special details relating to Indian canals and some proposed improvementsBellasis, E. S. (Edward Skelton)
Science
Irrigation works : $b the principles on which their design and working should be based, with special details relating to Indian canals and some proposed improvements
Bellasis, E. S. (Edward Skelton)
Canals; Irrigation
[56] Jungle on inside slopes not to be cleared where banks fall in or
where channel is too wide.
[57] When an embankment runs parallel to an inundation canal, a chain
or so distant, the intervening space need not be cleared, nor need the
top of a bank be cleared if it is so uneven that it is not a road.
2. =Trees.=--Trees which fall into a channel or across a road to have
their branches cut away at once. The trunk to be removed so far as is
possible. Trees which are dead or broken off should be felled, also
those which have been blown into inclined positions, unless bad gaps
will be caused. Trees (unless required for stock) to be sold as they lie
and removed, including the parts below ground, by purchasers, within a
fixed time. Logs, etc., not to be left lying about on canal land.
Stumps, etc., to be made into charcoal and the holes filled up.
_Note._--The above works (Parts I. and II.) to be done immediately after
the rains (repairs to roads and removal of trees, branches, etc., being
also done during the rains or whenever necessary) and finished at latest
by 31st October.
III. CATTLE CROSSINGS OR GHÁTS.
1. =Repairs.=--Gháts to be dressed, strengthened, and kept neat, the
bank being thrown back and curved so as to give a long inner slope, and
lumps, etc., levelled off.
2. =Closures.=--To be closed (by order of Subdivisional Officer and no
one of lower rank) only when very near to a bridge or near to another
ghát.[58] If closed, to be staked up and bushing to be added. Not to be
closed by loose thorny branches. Not to be allowed close to any
milestone, outlet, etc.
[58] Regarding gháts at bridges, see Chap. II., Art. 12.
3. =Small Gháts.=--Gháts where only foot-passengers cross, can run
diagonally up the slopes or as may be convenient. They should be dressed
and kept in order.
4. =Canal Road at Gháts.=--At all gháts care must be taken that the
canal road, especially if used for driving, is not cut up and is kept in
proper order.
IV. MISCELLANEOUS ITEMS.
1. =Rubbish or Obstructions in Bed of Channel.=--To be removed from the
channel when it is laid dry, and not left till it is about to be
reopened.[59] Old stakes, etc., to be sawn off when crooked or too high.
[59] Where the bed is too low, no rubbish clearance should be done
except in the case of very large snags, etc.
2. =Temporary Aqueducts or Damaged Wooden Bridges.=[60]--To be removed
before water is expected (but not sooner than is necessary) and the
banks repaired and made good.
[60] This applies to inundation canals.
APPENDIX C.
SPECIFICATION FOR MAINTENANCE OF MASONRY WORKS.
(See page 138.)
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