G R I G R I H A H A Workshop On Green Building Concepts & its Advantages SUSTAINABLE BUILDING MATERIAL & CONSTRUCTION TECHNOLOGY Date: 11 th March, 2013 SAP, Anna University , Chennai Ministry of New and Renewable Energy, GoI
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%).
G R I H A
G R I H A
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.
G R I H A
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
G R I H A
G R I H A
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.
G R I H A
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.
G R I H A
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.
G R I H A
Composite wood
In built furniture Police Training School, Tasgaon, Sangli
G R I H A
Flooring
Door/window frames
Thank You
Kiriti Sahoo