PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
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At the end of each day, the end of the pipe should be plugged to prevent entry of<br />
rodents, foreign substances, water etc.<br />
11.6 Support of pipe for nallah/river crossing.<br />
Venteak piles are proposed for portion of pipeline which crosses the nallah/river or<br />
slushy soils. Each pipe shall be supported on a pair of Venteak piles driven upto<br />
3.50m or firm ground whichever is met earlier.<br />
One pair of timber piles shall be driven about 150mm behind the shoulder of toe<br />
socket and another pair about 750mm in front of the spigot end of the pipe.<br />
The size of timber section to be used for Venteak piles shall be:<br />
100mm x 100mm for pipe sizes upto 300mm<br />
150mm x 150mm for pipe sizes above 300mm<br />
A cross piece of section same as that of pile shall be bolted to a pair of piles which<br />
have been driven to the required depth.<br />
The level of the cross piece should be such that when the pipe rests on its top, its<br />
Invert level coincides with the proposed invert of the pipe.<br />
The pipe shall be aligned for straightness and secured in position by wooden<br />
wedges nailed down to the wooden cross piece.<br />
The spigot end of each pipe shall be thoroughly homed in to socket of preceding<br />
pipe and jointing made.<br />
The pipe shall be further secured from moving upwards by timber crosspieces<br />
bolted to the supporting piles. The section of the crosspiece shall be same as that of<br />
pile.<br />
The socket ends of all pipes shall face up hill irrespective of the direction of water<br />
flow. Any deviation either in plan or elevation of less than 11 ¼ deg. angle shall<br />
usually be effected by laying straight pipes round a flat curve, of such radius that<br />
rubber gasket shall not be disturbed in its place.<br />
Wherever new pipes laid are to be jointed with existing pipeline, first pipe laying<br />
work of new pipes are to be completed. Jointing of new pipe line with existing pipe<br />
line has to be completed within a stipulated time as per the instructions of Engineer<br />
in charge to keep the distribution system ready to supply water to the city. No extra<br />
payment will be made for this time bound urgent work.<br />
GTS : General Technical specification. Page 87
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