Comparison of conventional and nonconventional construction
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Transcript of Comparison of conventional and nonconventional construction
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COMPARISON OF CONVENTIONAL AND NONCONVENTIONAL
CONSTRUCTION
GUIDED BY;DR. SURENDRAN A.,
HOD & PROF OF CE DEPT.
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GROUP MEMBERS
BINI A.V.CHANDNI P.K.DHANYA U.SRUTHY P.SUSAN SUNNY KOCHERIL
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PIONEER OF COST EFFECTIVE MOVEMENT IN INDIA
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INTRODUCTION
Ar. Laurie Baker is one who worked on cost effective construction technique as its best.
Baker showed, in fact , that sustainable technologies when adopted with care and creativity, could lead to a unique architectural expression.
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VARIATION IN COST
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BUILDING COST Building Material Cost : 65 to 70 % Labour Cost : 65 to 70 %
( As per Central Building Research Institute (CBRI))
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COST EFFECTIVE BUILDING MATERIALS
The basic aspect in the choice of a material
“EMBEDDED ENERGY”
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COST EFFECTIVE BUILDING MATERIALSStabilized Compressed Earth Blocks :- Are made of mud with suitable percentage of cement and compacted in block making machine with no burning.
Economical, stronger, low embedded energy and simple to manufacture
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Reconstituted stone blocks / Stone filler blocks If small pieces of stone only are
available, ‘reconstituted stone blocks’ provides the best alternative masonry block.
Can be used for foundations and walls.
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Waste material content 30-40% by volume of block.
Validated by BMTPC, IS 12440-1985
Better facing
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COST EFFECTIVE TECHNOLOGIES FOR DIFFERENT BUILDING ELEMENTS
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WRONG CONCEPT OF FOUNDATION
Conventional method
Foundation in comparatively hard soil
Better option
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FOUNDATION
Random Rubble masonry with mud mortar
Foundation cost : 10 to 15% of total building (approx)
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FOUNDATION Arch foundation
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Under ream pile foundation
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FOUNDATION USING BAMBOO
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BAMBOO PILES IN MUDDY SOILS
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Bamboo reinforced surface beams in lime concrete
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Under reamed piles
Most economical pile
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WALL
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STABILIZED MUD BLOCK WALL
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ARTICULATED SLENDER MASONRY
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RAT TRAP BOND WALL
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FEATURES OF RAT TRAP BOND WALL
Uses 425 bricks per cubic meters instead 500 bricks.
Saves mortar. Thermal comfort. Can be left exposed, saves external
plaster. Tested and validated by Anna
University.
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LINTEL
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ROOF Bamboo roof slab RCC Filler slab
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Ferro cement channels
Rural house
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Funicular shell Bricks/ waste stone laid in a doubly
curved profile with a shallow rise at the centre.
Utilizes waste material Reduction of cement and steel
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Paint is an important material used in construction, which is
“Non recyclable”
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FINISHES• Exposed masonry with pointed finish• Non erodible mud plaster• Lime plaster• Lime-cement combination plaster• Natural extracts as paint (cashew oil,
bee’s wax, linseed oil)• Clay with adhesives as paint • Lime wash
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Exposed brick masonry with flush pointed finish.
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PROGRESS OF PROJECT Works have done:
1. Preliminary Study on conventional materials
2. Data collection of various non conventional materials
3. Study of practical applications of nonconventional technique
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4. Planning and specification for a building in both conventional and
nonconventional system5. Training programs and discussions
regarding relevance in COSTFORD and Kerala State Nirmiti Kendra.
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Works to be done :
1. Quantity survey of the conventional and nonconventional residential
building
2. Stabilized mud block manufacturing and testing
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3. Reconstructed laterite stone blocks manufacturing and testing
4. Energy auditing
5. Filler slab design as per grid beam theory
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CONCLUSION
Relevance of the topic with respect to the present scenario.
What we young engineers could promise our society