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| Cost Efficient construction Techniques | |
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| By:ashish batra - On Wednesday, May 28,2008 - 40476 View(s) - 24 Comment(s) |
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Essential requirement to human existence is a HOME next only to food and clothing. A breakthrough for application of sustainable and cost effective technologies for better housing in rural and urban areas is an urgent need considering spiraling construction costs.
There is a need for the adoption of strong, durable, environment friendly, ecologically appropriate, energy efficient and yet cost effective materials and appropriate technologies in construction.
Here are some innovative options which can contribute in reduction of cost and at the same time offer solutions which are aesthetic and acceptable for the varying regions and socio- economic profiles of our country.
Walling:-
a)Stabilized compressed earth blocks are made of mud stabilized with 5% cement/lime etc. and compacted in block making machine with no burning. A good walling material as burnt bricks and is economical, stronger, energy saving and simple to manufacture. The soil to be used for the blocks should have the requisite component of clay and silt and sand etc. soil stabilized hollow and interlocking blocks can provide better thermal insulation. b) Fly ash gypsum stabilized mud blocks are much stronger with less water absorption and cheaper than cement stabilized blocks. With 5 to 10% flyash- G, 30% saving in cement could be achieved in addition to utilization of the waste product like flyash.
c) Flyash- lime gypsum products manufactured by blending flyash lime and calcined gypsum for making a useful product named Fal-G , and can be used a cementateous material for mortar/plaster and for masonry blocks of any desired strength. It can also be used for road pavements and plain concrete in the form of Fal-G concrete.
d) Clay red mud burnt bricks produced from alumina red mud or bauxite, an industrial waste of aluminium producing plants in combination with clay. Posses all the physical properties of normal clay bricks and solves the problem of disposal of the waste product and environmental pollution. In addition, they have good architectural value as facing bricks due to their pleasing hues of color.
e)Precast stone blocks of larger size than normal bricks are manufactured by using waste stone pieces of various sizes with lean cement concrete and enable a rationalized use of natural locally available materials. Shaping stones in this manner, enables speedy construction saves on cement, reduces thickness of stone walls and effects overall saving by eliminating plasters on internal/external wall surfaces.
f) Precast concrete blocks made to similar dimension of stone blocks without large size stone pieces, but using coarse and fine graded cement. They have excellent properties comparable to other masonry blocks, are cheaper and facilitate speedy construction and especially suitable where quality clay for bricks making is not available.
g) Rat trap bond is an altenate brick bonding system for English and Flemish bond. This is economical, strong and aesthetic. 25% of the total number of bricks and 40% of mortar can be saved by using rat trap bond. It is simple to build and has better insulating properties.
ROOFS:-
a)Funicular shells over edge beams provide a simple and attractive alternative to RCC construction for small to medium spans. These can be used to span square, rectangular or even tri angular and non orthogonal spaces and consist of thin shell of concrete, brick, stones, tiles supported on edge beams. These are cost effective as the required quantity of steel and cement is much less and can be precast avoiding costly shuttering.
b)Filler slabs are normal RCC slabs where bottom half (tension) concrete portions are replaced by filler materials such as bricks, tiles, cellular concrete blocks, etc. these filler materials are so placed as not to compromise structural strength, result in replacing unwanted and non functional tension concrete, thus resulting in economy. These are safe, sound and provide aesthetically pleasing patterns ceiling and also need no plaster.
MISCELLANEOUS
a) Brick arches are less costly than reinforced concrete lintels. These are strong and aesthetic to look at with segmental, semi circular arches depending on the span and the load to be taken. Stabilized soil blocks instead of burnt clay bricks will further reduce the cost of arches.
b) Brick jails made by widening and leaving openings in the vertical joints can provide aesthetic patterns and ventilation holes that can take the place of window openings at the little cost.
c) Corbel is one of the inexpensive way of spaning an opening in a wall. Each course of the brick project out by 5cm, beyond the course below until the bricks meet together in the middle and does not require centering. This can also be used for cantilever support, built in furniture for seats etc.
After watching this a question keep striking your mind that
IS IT POSSIBLE?
We make you to say YES, IT IS POSSIBLE.
Contact Gharexpert.com
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21 Comment(s) |
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| By Jog Trot : On Sunday, March 6,2011 Why Ashish has not replied to any of the questions asked by several people here?Is it a policy of this web site? if so, then why we have comments space available? Just to praise or critisize the writer? but without any feedback from him/her? |
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| By abeeca : On Wednesday, January 12,2011 Its realy interested and helpful for every one,Great deed. |
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| By shabbir : On Thursday, September 16,2010 ...How you achive tensile stress at the bottom of the floor slab by replacing with "Brick pattern??? |
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| By anjana shitole : On Saturday, August 14,2010 its great to know more about the new tecnics of using brick material |
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| By mahmood : On Tuesday, April 20,2010 Hi! Mr Ashish its an informative and interesting too, I wonder that do you really think that these applications are cost effective because these require specialized skilled person coupled with transportation this may lead to at par with normal block masonary yes for facade etc it can be useful and long lasting. Any way this was just an idea but thanks for providing good information. |
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| By anarkali : On Sunday, November 1,2009 hi Ashis, this is very informative article, thnx,how can i know more about these techniques? |
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| By ephrem : On Thursday, October 29,2009 Ashish,I am presently wanting to build a house in Goa of approx. 160 mtr. Could you advise how i can save costs by using the above techniques. How strong these inovations are compared to RCC foundations/colums/lentils/roofs? Can you provide me with your cell no to keep contact?Regards, |
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| By Suneel Jain : On Wednesday, October 28,2009 very informative article, thanks |
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| By gunjan.jain : On Saturday, September 13,2008 hi ashish, can u share with me some more information on compressed earth blocks... if so plz contact me on my mail id....! |
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| By ujjuku : On Thursday, June 5,2008 interestingcan u please give me your mobile no. to contact and have interaction |
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