PowerPoint PresentationWorkshop On Green Building Concepts & its Advantages
SUSTAINABLE BUILDING MATERIAL & CONSTRUCTION TECHNOLOGY
 
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BUILDING MATERIALS
Criteria- 15: Utilization of fly ash in building structure
Appraisal (maximum points 6)
15.3.1 Minimum 15% replacement of Portland cement with fly ash by weight of cement used in structural concrete, as per clause 15.2.1 – points 1 (additional 1 point if more than 25%).
15.3.2 Minimum 40% composition of building blocks/bricks by fly ash by volume, for 100% load bearing and non-load bearing walls, as per clause 15.2.2 – 2 points
15.3.3 Certify minimum 15% replacement of Portland cement with fly ash in plaster/masonry mortar, as per clause 15.2.3 – 1 point (additional 1 point if more than 25%).
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RMC
Fal-G stabilized mud blocks: These blocks are stronger and cheaper than cement stabilized blocks. These use fly ash, lime and gypsum (which could be up to 30% of the total composition). By use of 5-10% of Fal-G, 30% of cement can be saved.
Clay fly ash bricks: These are manufactured from a mixture of fly ash and clay. These are stronger than conventional burnt bricks, provide better thermal insulation and use industrial waste.
Fly ash/sand lime bricks: These are produced from fly ash or sand with using lime as a binder. They require autoclaving.
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Cellular Light Weight Concrete blocks
Source: http://wb5.itrademarket.com/pdimage/49/336649_block6.jpg
AAC blocks
Source: http://wbcarbonfinance.org/images/IndaFalg2.jpg
CLC (Cellular light weight concrete) blocks are substitute to bricks and conventional concrete blocks in building. The normal constituents of this are foaming agent based technology cement, fly ash (to the extent 1/4th to 1/3rd of total materials constituent), sand, water and foam (generated from biodegradable foaming agent). Using CLC walling and roofing panels can also be produced.
Advantages of CLC
Better strength to weight ratio
Reduction of dead load resulting in saving of steel and cement and reduction in foundation size
Better acoustics and thermal insulation (air conditioning requirement is considerably reduced)
Saving in consumption of mortar and higher fire rating
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Criteria- 16: Reduction in embodied energy of building materials
Appraisal (maximum 4 points)
16.3.1 Structural application
Use of low-energy materials/efficient technologies in structural application clearly demonstrating a minimum 2.5% reduction in embodied energy of building structure, for 100% structural system used in a building, meeting the equivalent strength requirements, as per all compliance clauses - 1 point (additional 1 point if reduction is more than 5%)
16.3.2 Non-structural application
Use of low-energy technologies/materials (not based on the utilization of industrial waste), which are used for non-structural applications such as infill wall system and cause a minimum 5% reduction in embodied energy of building blocks, for 100% infill wall system used in a building, meeting the equivalent strength requirements, as per all the compliance clauses – 1 point (additional 1 point if reduction is more than 10%)
G R I H A
POST TENSIONED SLABS being cast in situ
Source: GRIHA Registered Project
Pre-stressed and pre-cast Floor U-beam and Foundation piles
Source: http://www.prestressinternational.com/productsservices.htm
Pre-stressed concrete: This technique helps in overcoming concrete’s weakness when dealing with tension forces. Pre-stressing produces lighter-weight buildings which constructed of shallower floor slabs for the same length of span. This helps in reducing the seismic loading and height of the building. Pre stressing can be achieved in two ways: Pre-tensioning and Bonded Post-tensioning (http://www.nbmcw.com/articles/concrete/491-prestressed-concrete-in-building-.html)
Advantages of Pre-stressed concrete: It uses less concrete. There is a reduction in slab depth as well which brings down the building height and thus the cost. Lesser steel rebars are required as reinforcements, thus saving on materials as well as cost.
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Source: http://en.promel.biz/
http://www.ballutblocks.com/uploads/100_0030_JPG.jpg
Hollow floor slabs enable light-weight construction thereby reducing the sizes of the rest of the structural system as well. They also enable the floor to floor height to be reduced, thereby again saving on material consumption and cost. They can support longer spans as compared to conventional RCC slabs. Thus reducing the number of supports required.
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http://tropicalconcrete.com/images/hollow-corefloorsystem.jpg
Source: http://www.easy2source.com/products/building-and-construction/construction-products-and-equipment/hollow-bricks/
http://i.treehugger.com/images/2007-2-15/tedo-aa-02.jpg
http://www.understanding-cement.com/images/aircreteblock.jpg
http://www.cpwrconstructionsolutions.org/gallery/AAC.jpg
Criteria- 17: Use low energy material in interiors.
Appraisal (maximum 4 points)
Minimum 70% of the total quantity (gross area) of all interior finishes and products used for each of the category, as applicable to the applicant, to be low- energy finishes, for each of the following category.
17.3.1 Sub-assembly/internal partitions/panelling/false ceiling/in-built furniture (2 points) – as per clauses 17.2.1–17.2.5.
17.3.3 Doors/windows, frames (1 point) as per clauses 17.2.1–17.2.5.
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Composite wood
In built furniture Police Training School, Tasgaon, Sangli
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Flooring
Door/window frames
Thank You
Kiriti Sahoo