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If you want to buy bricks, check the finish of the brick. It should
be rectangular with sharp edges and bright red. See that the bricks
don't even have the tiniest of cracks.
 A
simple test to check the relative strength of a brick:
Take a brick and drop it from a height of about three to four feet.
The point where it crumbles completely gives you an idea of the
relative strength. If one variety of brick breaks at three feet
and the other at four feet, the latter is almost twice as strong
as the former.
Weigh a brick, then immerse it in a pail of water for about 24 hours
and weigh it again. If the weight gain is very high, then the brick
is of inferior quality.
A few things to remember while hiring your borewell
drilling contractor:
 1.Make sure that
the contractor has all the required infrastructure (like drilling
rigs) for the job and can source qualified geologists to conduct
a survey of the land to locate water.
2.The drilling company should also have the technology for
installing pumpsets and servicing these sets later on.
3.During the construction of the borewell, the most important
thing is the installation of the casting pipe. If this is not done
properly you are liable to get silty water. If you use inferior
casting pipes they will quickly corrode and the life of the borewell
will be lessened.
4.The size of the drilling pit is very important. According
to government rules, the pit's diameter should be 147 mm. If the
diameter is less than this, the submersible pumps won't fit in.
If you are not careful, the contractor can just dig the pit and
walk away, which would be of no use.
5.The actual quantity of the water yield can be measured
with the help of a V-Notch. Make sure the contractor shows you the
yield by passing the water through the V-Notch. When you have installed
your pumpset, see that the contractor guarantees after sales service.
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