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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.
Chec k the relative strength of a brick by a simple
test : Take a brick and drop it from a height of about three to four
feet. Start from three feet and keep increasing the height. 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. There are
also various labs where you can send samples to test the crushing
strength of a brick. 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.
Installing The Casing Pipe Is Most Important...
 Here are a few things
to remember before you hire your borewell drilling contractor :
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
The drilling company should also have the technology for installing
pumpsets and servicing these sets later on. 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. The size of the drilling
pit is very important. According to government rules, the pit's
diametre should be 147 mm. If the diametre 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. 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.
It Should Be Smooth, Dry & Cool To
Touch...
T here are two types of cement: Grey cement
- used only for construction purposes, and White cement -for a variety
of uses like mosaic flooring, in cement paints, and as a primer
for paints, etc. Grey cement costs more than white cement because
the production costs and excise duty are higher. White cement also
sets faster. For grey cement, the strength after 28 days of setting
is taken as the final strength. White cement achieves this strength
in about three days time.
How do you buy cement ?
The cement has to be fine in texture. It should be smooth, dry and
cool to touch. Fineness gives more strength to cement because the
chemical reactions take place faster. Do not buy cement which is
in rough, granular lumps. This indicates it has been exposed to
moisture. Cement is now available in grades and is easier to buy
. For eg: 53 grade cement implies that a cube of cement can withstand
a pressure of 530 kgs per square centimetre. You can check this
on a compressing machine. This is called the breaking strength of
cement. Good cement hardens faster. You can therefore remove the
scaffolding / formwork faster than usual. You save on centering
and labour costs, and your bulding is ready much faster
See That Marble Tiles And Slabs Are Sqare Edged...
Ma rble has qualities
and advantages over other stone materials. It is more durable, attractive
and is available in various colours - white, yellow, red, black
and green, which can be used to match any kind of decor. When used
for flooring it provides a highly elegant finish which is hard,
durable, dust free and suits Indian climatic conditions. Marble
possesses great reflective qualities and its crystalline structure
gives it a bright lustre.
Marble is broadly classified into two categories -
white and coloured. For exterior finishes, sound marble with uniform
quality should be used. If the marble contains flaws, voids, is
discoloured by veins and lines, it should be treated for soundness
by spraying surface treatment compounds. Good marble should comply
with the following requirements:
If immersed in cold water for 24 hours the marble should not
gain more than 0.4% in weight
On Moh's scale (a scale of 1 to 10 to measure hardness of solid
materials, where talc, the softest material occupies No.1 position,
and diamond, the hardest material is No.10), hardness of marble
should measure more than 3. * When you buy marble slabs and tiles
see that they are square edged. Tiles and slabs are available in
the following finishes: Sand abrasive finish - a flat non-reflective
surface. Hone finish: a velvet smooth finish with little or no gloss.
Polished finish: a highly glossy finished surface which brings out
the full colour and character of marble .
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