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.
Check 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
Here are a few things to remember before you hire your borewell
* 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
There 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...
Marble 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 .