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ContentContentPart I
◦Sustainability◦EIA◦LEED; SS, WE, EA, MR, EQ, ID
Part II◦Sustainable Steel Construction SCC
Part III◦Application for IFSC
1.1 Sustainability1.1 Sustainability
Sustainability is finding a balance between environmental, social and economic factors and can be
defined as "treating the World as if we intended to stay"
1.2 Sustainable 1.2 Sustainable ConstructionConstruction
Focuses on built environment
construction phase
operational life cycle
1.31.3 Environmental Impact Environmental Impact AssessmentAssessmentEIA Process by World Bank- Executive Summary- Project Description- Baseline Data- Impact Assessment- Analysis of Alternatives- Mitigation or Management Plan- Environmental Monitoring Plan- Public consultation
1.4 GREEN 1.4 GREEN BUILDING/LEEDBUILDING/LEED
7 Versions:◦LEED-NC: New Construction◦LEED-EB: Existing Buildings◦LEED-CI: Commercial Interior◦LEED-H: Homes◦LEED-ND: Neighbourhood Development
◦LEED-S :School◦LEED-R: Retail
Sustainable Site
Water Efficiency
Energy & Atmosphere Materials & Resources
Indoor Environmental Quality
Innovation & DesignLEED - NC
SS Credit 2: Development Density SS Credit 2: Development Density
And Community ConnectivityAnd Community Connectivity Requirements
◦ increase development based on the minimum density of 13,800 m2 per hectare
Or ◦ achieve the required development density on its
site◦ within 800 metres (½ mile) of a residential zone
or neighbourhood◦ with an average density of 25 units per hectare
(10 units per acre net) (unless the project itself contains residential units);
◦ 6 unique amenities in or within 800 metres of the project; and, pedestrian access between the building and the services.
Equation:
DDsite = (GFAP/AT) ≥ 60,000 ft2/acre DDarea = ΣGFAi / ATi ≥ 60,000 ft2/acre
WhereGFAi : Gross floor area of other building (square feet)GFAP : Gross floor area of the subject project (square feet)
1 point
WE Credit 2WE Credit 2: Innovative : Innovative Wastewater Wastewater TechnologiesTechnologiesRequirements:Reduce sewage water consumption
by 50% - captured rain water, conservative use
Treat 50% of wastewater on-site
Baseline water Fixture Requirement
Calculations and Calculations and ConsiderationsConsiderations
(BWD – GW) / BWB ≤ 0.50 1 point
Where GW is the annual gray waterBWD or ASG is blackwater design generation rate
gal/yrBWB is the blackwater baseline generation rate
gal/yr
EA Credit 2.1EA Credit 2.1 : : Renewable Energy 5%Renewable Energy 5%
Requirements:Supply at least 5% of the
building’s total energy through on-site renewable energy systems.
MR Credit 7MR Credit 7 : Certified : Certified WoodWood
Requirements:use a minimumof 50% of wood-
based
Materials & products
Certified wood, (FSC)
Where, MATL$FSC = ∑MATL$FSCi over all units i MATL$WOOD = ∑MATL$WOODi over all units I MATL$FSCi = MATL$UNITi (MASSFSCi)/ MASSUNITi MATL$WOODi = MATL$UNITi (MASSWOODi)/ MASSUNITi
Calculations and Considerations:
100(MATL$FSC)/ MATL$WOOD ≥ 50 1 point
100(MATL$FSC)/ MATL$WOOD ≥ 95 Extra1 point
EQ Credit 2EQ Credit 2: : Ventilation EffectivenessVentilation Effectiveness
Requirements:For mechanically ventilation systems -Air change effectiveness (Eac) ≥ 0.9 (ASHRAE
Standard 129-1997)
For naturally ventilated systems – distribution and laminar flow pattern that
involves not less than at least 90% of each room or zone area in the direction of airflow for at
least 95% of hours of occupancy
PeoplePeople
safety and pleasant working conditions during construction
maximize glazed areas
enhanced quality of life
good thermal and acoustic insulation
social
PlanetPlanet
recyclable clean and dry construction
site free of detriment elevated mechanical
properties production and processing
are environmentally friendly◦ CO2 emissions have been halved
◦ dust dispersion has diminished by more than 90%.
lightweight and fit harmoniously
environment
ProfitProfit
promote energy savings
Erection is rapiduse of less
materialeasy to maintainextremelydurable
Economic
Use of materials and C&D waste Use of materials and C&D waste generationgeneration in the life cycle of buildingsin the life cycle of buildings
Re-use and recycling of Re-use and recycling of steel used in constructionsteel used in construction
Recycle in USARecycle in USA
- in 2007, the overall recycling rate was about 78.2 M tones of scrap
Technologies:
Basic Oxygen Furnace (BOF)
Electric Arc Furnace (EAF)
As per the Steel Recycling Institute
Basic Oxygen Basic Oxygen Furnace Furnace (BOF)(BOF)
uses 25 to 35 % of old steel
to produce new ones
Electric Arc Furnace (EAF)
uses more than 80% of old steel to make new one
Energy ConsumptionEnergy Consumption
reduced by 33% since 1990
reduced the dependency on natural resource
Corrosion Environmental & Corrosion Environmental & DurabilityDurability
Reference: Nippon Steel Technical Report No.79 Jan 1999
Effect of water on Effect of water on corrosioncorrosion
Effects of oxygen concentration and temperature on the corrosion of low-carbon steel pipes are indicated in the diagram below
ReferencesReferencesAmerican Iron and Steel
Institute (AISI)
http://steel.org
www.sustainable-steel.org
International Iron and Steel Institute (IISI)
http://www.worldsteel.org/
NAHB Research Center
National Green Building Standard
http://www.nahbrc.org/
Steel Framing Alliance
http://www.steelframing.org
Steel Recycling Institute
http://www.recycle-steel.org
Steel Stud Manufacturers Associationwww.ssma.com U.S. Department of Energy, Energy Efficiency andRenewable Energyhttp://www1.eere.energy.gov/industry/steel/pdfs/moe_steelmaking.pdf U.S.Green Building Councilhttp://www.usgbc.org U.S. Geological Surveyhttp://minerals.usgs.gov/minerals/pubs/commodity/iron&steel/
Eighty-six shipping Eighty-six shipping containers make up the new containers make up the new Travelodge Hotel in Travelodge Hotel in Uxbridge, EnglandUxbridge, England