PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

11.1 Transportation.
Chapter - 11
Laying and Jointing of D.I. Pipes
The transportation of materials to work site and stacking shall be done in such a
manner as to cause minimum inconvenience to the traffic and other construction
works. Pipes shall be protected during handling against impact, shocks and free fall
to avoid cracks and damage. Pipes shall be loaded for transportation is in such a
way that they are secured and no movement can take place on the vehicle during
transit. The same care shall be taken if pipes are transferred from one vehicle to
another, however short the journey may be. The cement mortar lining of pipes that
are damaged during transportation is to be repaired by hand application if possible;
otherwise it has to be rejected. The decision for rejection shall be taken by the
Engineer in charge.
11.2 Unloading of pipes.
Each pipe consignment shall be inventoried and inspected with care upon arrival
even though the pipes have been inspected and loaded with care at the factory.
Overall examination shall be made during unloading to ensure that the pipes have
reached destination in good condition. If there is any sign of rough treatment on the
coating, each pipe shall be inspected for damage.
While unloading, pipes shall not be thrown down from the truck to the hard roads.
Cranes or mechanical equipment shall be used for unloading the pipes from the
truck. If mechanical equipment is not available, care should be taken to unload the
pipes on timber skids. Unloading them on timber skids without a steadying rope
and thus allowing the pipe to bump hard against one another should not be allowed.
In order to avoid damage to the pipes specially to the spigot end, pipe should not be
dragged along concrete and similar pavements with hard surfaces.
The pipes shall be laid on timber battens and secured with wooden wedges. The
pipes shall be stacked with each tier at right angles to the preceding tier.
11.3 Lowering of pipes and fittings.
The pipes shall be lowered cautiously to prevent disturbances of the bed and sides
of the trench.
GTS : General Technical specification. Page 85