2012 IECC Building Code (Washington, DC)
The DC Green Code covers:
ü All commercial projects (10,000 SF and larger)
ü Multi-family residential 4 stories and larger (and 10,000 SF and larger)
Service Water Heating (404)
ü Coverage
üRestrooms, showers, laundries, kitchens, pools and spas, defrosting of sidewalks and driveways, car washes, beauty salons, and other commercial enterprises.
ü Minimum efficiency for equipment – no significant changes from previous edition.
ü Fixture efficiency covered in Green/Plumbing Code
Lighting Systems (405)
ü 40% of Commercial Building Energy Consumption
üImpact on HVAC Load
üLighting Power Density
üReductions across the board
üControls
üAdditional emphasis – daylit spaces
Building Envelope Requirements (C402)
ü Windows (SHGC, U-Value)
üProjection Factor (SHGC)
ü Increased vertical fenestration (40%) and skylight (5%) with use of daylighting controls
Additional Efficiency (406)
ü1 – Additional HVAC Equipment Efficiency
ü2 – Additional Lighting Power Density Reductions
ü3 – On-Site Renewable Energy
ü 0.5 W/sf (conditioned)
ü 3% of mechanical, SHW, lighting
ü All commercial projects (10,000 SF and larger)
ü Multi-family residential 4 stories and larger (and 10,000 SF and larger)
Service Water Heating (404)
ü Coverage
üRestrooms, showers, laundries, kitchens, pools and spas, defrosting of sidewalks and driveways, car washes, beauty salons, and other commercial enterprises.
ü Minimum efficiency for equipment – no significant changes from previous edition.
ü Fixture efficiency covered in Green/Plumbing Code
Lighting Systems (405)
ü 40% of Commercial Building Energy Consumption
üImpact on HVAC Load
üLighting Power Density
üReductions across the board
üControls
üAdditional emphasis – daylit spaces
Building Envelope Requirements (C402)
ü Windows (SHGC, U-Value)
üProjection Factor (SHGC)
ü Increased vertical fenestration (40%) and skylight (5%) with use of daylighting controls
Additional Efficiency (406)
ü1 – Additional HVAC Equipment Efficiency
ü2 – Additional Lighting Power Density Reductions
ü3 – On-Site Renewable Energy
ü 0.5 W/sf (conditioned)
ü 3% of mechanical, SHW, lighting
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Technologies
- Building envelope technologies
- Draught sealing
- Other fenestration
- High efficiency windows
- Floor insulation
- Wall insulation
- Roof insulation
- Space, water and process heating technologies
- Space cooling
- Mechanical ventilation and humidification
- Lighting technologies
- Insulation
- Building design (incl. passive cooling and heating)
- Heating, cooling and climate control technologies