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Cost effective construction tech PPT


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Low cost housing  refers to houses that are inexpensive to build. IT doesn't mean that the houses will be inexpensive to live in.
The goal of low-cost housing is to save money while also maintaining buildings quality.
Following Properties Reduces Cost of Construction:
Locally available materials .
Improved skills and technology.
Without sacrificing the strength, performance and life of the structure.

Published in: Engineering
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Cost effective construction tech PPT

  1. 1. Low Cost Construction By : Nischay .N , B.E(Civil)., M.Tech., IGBC-AP.
  2. 2. INTRODUCTION • Low cost housing refers to houses that are inexpensive to build. IT doesn't mean that the houses will be inexpensive to live in. • The goal of low-cost housing is to save money while also maintaining buildings quality. • Following Properties Reduces Cost of Construction: • Locally available materials . • Improved skills and technology. • Without sacrificing the strength, performance and life of the structure.
  3. 3. Factors affecting construction cost • Building Cost : The building construction cost can be divided into two parts namely: Building material cost . Labor cost . • Size : The smaller the project in terms of scope or the number of square feet, the more it will cost per square foot. • Type : Different types of project have different levels of complexity and detail.
  4. 4. • Special Construction • Project accessibility • Labor Rates • Material Costs • General Economic Pressures • Time of Year
  5. 5. • These were the factors affecting the budget of making any structure but we are here to know more about the construction techniques and materials which helps us in reducing the cost of structure. • So, lets move towards the techniques…
  6. 6. Construction technique adopted: 1. Foundation 2. Wall 3. Lintel 4. Roof
  7. 7. 1. Foundation • The foundation cost comes to about 10 to 15% of the total building • It is adopted for single or double storey building. • It is recommended to adopt a foundation depth of 2 ft.(0.6m) for normal soil like gravely soil, red soils etc.
  8. 8. • Suggested to adopt arch foundation in ordinary soil for effecting reduction in construction cost up to 40%. • In the case black cotton and other soft soils it is recommend to use under ream pile foundation which saves about 20 to 25% in cost over the conventional method of construction.
  9. 9. Arch foundation • Arch foundations require less digging, material, and being a relatively labor-intensive process, put more laborers to work.
  10. 10. • View of completed building with arch foundation
  11. 11. • Wall thickness of 6 to 9″ is recommended for adoption in the construction of walls all- round the building and 41/2 ” for inside walls. • It is suggested to use burnt bricks which are immersed in water for 24 hours and then shall be used for the walls. • Making use of Rat – trap bond wall & Concrete block wall. 2.Wall
  12. 12. Rat Trap Bond Wall • It is a cavity wall construction and leads to reduction in the quantity of bricks required for masonry work. • By adopting this method of bonding of brick masonry compared to traditional English or Flemish bond masonry, it is possible to reduce in the material cost of bricks by 25% and about 10to 15% in the masonry cost. • By adopting rat-trap bond method one can create aesthetically pleasing wall surface and plastering can be avoided.
  13. 13. Brick jali • The common burnt brick is one of man’s great inventions. all over the world, with only a few exceptions, nearly all bricks are roughly the same shape and size - that is about 9 x 4.5 x 3 inches. • In many of these situations listed above a “jali” is just as effective.
  14. 14. More uses Brick jali can be used instead of parapet wall or boundary walls... lets watch out for some examples....
  15. 15. Instead of using regular walling system of lintel and window system ,jali work can help cost estimation.
  16. 16. 3.Lintel • The traditional R.C.C. lintels which are costly can be replaced by brick arches for small spans and save construction cost up to 30 to 40% over the traditional method of construction. • By adopting arches of different shapes a good architectural pleasing appearance can be given to the external wall surfaces of the brick masonry.
  17. 17. • Normally 5" thick R.C.C. slabs is used for roofing of residential buildings. • By adopting rationally designed construction practices like filler slab and precast elements the construction cost of roofing can be reduced by about 20 to 25%. 4.Roof
  18. 18. Filler slabs • They 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 nonfunctional tension concrete, thus resulting in economy. • These are safe, sound and provide aesthetically pleasing pattern ceilings and also need no plaster.
  19. 19. A)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. • B) 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. MATERIALS
  20. 20. C). Stabilized Mud Blocks (SMB's) • The excavated soil is mixed in the adequate proportion with the appropriate stabilizer. It is important that the sieved soil be dry/ protected from the rain before being used.
  21. 21. • For stabilized soil cement blocks, the mixture is put into the machine's mold to get pressed. • A block-making machine is used for the creation of stabilized mud blocks. A measured amount of sieved soil, quarry dust, sand/cement or lime is put in the block-making machine mould.
  22. 22. • The blocks are weighed to certify their density and compression, and therefore quality. • Stabilized earth blocks are designed to take heavy loads, replacing the widely used reinforced concrete columns. It can be used for roofs and walls alike.
  23. 23. • Waste material used as filler material between the vault of one floor and the floor slab of the next floor.
  24. 24. People who are working on this !! Ar. Lourie baker S Vishwanath Chitra Vishwanath
  25. 25. Ar. Lourie baker •Born in 2 March 1917. • Was an award-winning British-born Indian architect. • Renowned for his initiatives in cost-effective energy-efficient architecture. • Built Houses for lower-middle to lower class clients. • Made many concepts related to low cost housing. • Died on 1 April 2007 at the age of 90.
  26. 26. His works • The - Lourie Baker’s home • Baker’s home in TRIVANDRUM. • INTERIOR of living room HAMLET
  27. 27. Baker also innovated different bonding techniques for brick, which allowed him to build of half- brick thickness. To add rigidity, many a times these walls were designed in a stepped or curved form.
  28. 28. S Vishwanath Director,BIOME Qualification: B.E, NIE Mysore Master in Urban Planning, CEPT Ahmadabad
  29. 29. Qualification: Bachelor of Architecture, Ahmedabad Chitra Vishwanath Principal Architect & Managing Director Of BIOME
  30. 30. Cost-effective building materials and construction technologies Research and development bodies in India are Central Building Research Institute (CBRI), Structural Engineering Research Centre (SERC), Centre for Application of Science and Technology to Rural Areas (CASTRA), Regional Research Laboratories (RRL), National Environmental Engineering Research Institute (NEERI)
  31. 31. Thank you "Cost-effective houses are not just for the poor, they are for everyone.”