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Adopt Green Codes
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City Wide Program:
Austin, Texas.
City Council Resolution No. 000608-43), 2000 (2007 Update)
Program Description:
In 2007 The City of Austin's municipal building standard was updated, the revised policy sets two criteria for triggering the LEED Silver requirement for new construction and major renovations. The project includes work in the five major LEED categories: sustainable sites, water efficiency, energy and atmosphere, materials and resources, and indoor environmental quality.
The project has construction costs of $2 million or more. In addition, smaller renovations, additions, and interior finishings costing $300,000 or more and requiring work in the LEED energy and atmosphere, material and resources, and indoor environmental quality categories must also achieve LEED Silver certification at a minimum.
The 2007 resolution also establishes the creation of best practice design criteria for buildings that do not meet the trigger criteria described above, and policies for whole building operations, including provisions for energy use monitoring and reduction of building energy use.
Energy Standard:
Commercial LEED Certification: below is summarized from LEED NC, details vary according to certification program. Mandatory: minimum 10% compliance beyond ASHRAE 90.1-2007, or use of NBI's Core Performance or one of ASHRAE's Advanced Energy Design Guidelines. LEED options include: optimize energy performance, on-site renewable energy, enhanced commissioning, enhanced refrigerant management, measurement & verification, and green power.
City Wide Program:
Austin, Texas.
Austin Energy Green Building Rating System Version 2008
Program Description:
The City of Austin has numerous green building provisions within the city building code, with requirements that vary according to location, zoning designation and building type. The building standards rely on the Austin Energy Green Building Rating system and the LEED certification system as metrics. In some cases developers have the option of achieving compliance under either of the two systems. Under the Austin Energy Green Building Rating System, buildings are awarded up to five stars depending on the number and breadth of green building elements that are incorporated into the design. In terms of energy efficiency, rated buildings are designed to exceed the Austin Energy Code.
Energy Standard:
Commercial: Austin Green Building Rating System Mandatory Requirements: exceed Austin's Energy Code by 15% commissioning; Point Options Include: reduce heat island effect - landscaping and roofing; additional increase in energy efficiency; use of renewable energy, additional commissioning, etc. Residential: Austin Green Building Rating System Mandatory Requirements: energy-efficient home design allows a minimum 500 ft2 of living space per ton of cooling capacity; cooling equipment minimum efficiency: 14.0 SEER for split systems/11.5 EER; Gas furnace rated at > 80 AFUE or Heat Pump rated at > 8.2 HSPF Window minimum efficiency: < 0.35 solar heat gain coefficient (SHGC); < 0.55 U-value in Climate Zone 2 (or Zone 3: < 0.40 and < 0.40); Wall insulation: Energy Star Grade I installation; OR batts + insulative exterior sheathing with R-value of > 2.0, taped at seams; OR “total fill” type (e.g. blown cellulose, BIBs, spray foam, SIPs); Floor insulation over ambient or unconditioned space: > R-13 with air barrier; Water Heater efficiency: 40 gallon > 0.61; 50 gallon > 0.59; 60 gallon > 0.57; 80 gallon > 0.53; Tankless > 0.80 Or WH is solar thermal; Ceiling fans: minimum of 2 installed within heated and cooled space; A minimum of 75% of all lamps/bulbs are ENERGY STAR-compliant Extensive List of Point Options include: Increased energy efficiency based on cooling ton/ft2; Indoor cooling equipment is located within the thermal envelope; Energy Star Lighting and Appliances, All duct work is located within the thermal envelope OR home has no duct work; Covered, usable porches; All roof overhangs project a minimum of 24" horizontally; Overhang projection factor for all windows facing east and west is >0.5; Daylighting; Cross-ventilation; Stack ventilation (e.g. operable cupola, clerestory, or stairwell exhaust); Shading on east and west walls of living space for at least 50% of wall area; Glazing area limited to no greater than 18% of conditioned floor area; Glazing on east and west walls combined does not exceed 25% of total glazing area; glazing on west wall does not exceed 10% of west wall and glazing on east wall does not exceed 10% of east wall; No skylights into conditioned space (solar tubes are acceptable); Garage is detached from the house or house has no garage - OR Attached garage has exhaust fan with timer or passive vent openings installed 18" above floor; etc. Separate Standards Apply to Multi-Family.
City Wide Program:
Plano, Texas.
City Policy, 2007
Program Description:
The City of Plano will require the highest level of LEED Certification possible for all city facilities.
LEED Certification points will be prioritized based on their ability to provide future energy savings, water conservation, waste reduction, and improved indoor air quality. Key factors to incorporate into the design include:
1. Use of passive solar energy
2. Natural lighting (day lighting) and adjustable lighting systems
3. Highly reflective roof and building exterior
4. Indoor Air Quality (low VOC materials and ventilation)
5. HVAC energy performance and efficiency
6. Use of on-site renewable energy
7. Waste minimization (recycling, reducing, reusing)
8. Water reclamation and conservation (rainwater harvesting, use of gray water, soil amendment, native or adapted landscape material, efficient irrigation system)Highest LEED possible.
Energy Standard:
Commercial LEED certification: below is summarized from LEED NC, details vary according to certification program. Mandatory: minimum 10% compliance beyond ASHRAE 90.1-2007, or use of NBI's Core Performance or one of ASHRAE's Advanced Energy Design Guidelines. LEED options include: optimize energy performance, on-site renewable energy, enhanced commissioning, enhanced refrigerant management, measurement & verification, and green power.
City Wide Program:
Rowlett, Texas.
Green Building Program, 2008
Program Description:
All new residential construction must be ENERGY STAR rated.
Energy Standard:
Residential: Mandatory Energy Star Rating, with a HERS index of 83 or less, including the prescriptive requirements of a programmable thermostat on each level, return air path specifications, all duct, plenums etc sealed with duct mastic.
City Wide Program:
San Antonio, Texas
Build San Antonio Green, 2002
Program Description:
The City of San Antonio supports the adoption and implementation of energy provisions that result in energy savings of 15% or greater than the currently adopted code in 2008 (IECC 2000 with 2001 supplement and ASHRAE 90.1 1999), the goal of 30% energy savings in 2012 over the currently adopted code in 2008 (IECC 2000 with 2001 supplement and ASHRAE 90.1 1999), the goal of net-zero carbon by 2030. Beginning January 1. 2010, energy usage in one-and two-family and multi-family dwellings, 3 stories or less, must achieve an efficiency rate of 15% above the current City of San Antonio energy code that was in effect in 2008 (IECC 2000 with 2001 supplement and ASHRAE 90.1 1999)
Build San Antonio Green, USGBC LEED-H, or other third-party certification program that meets or exceeds the energy requirements as approved by the Code Official shall be considered 10 compliance. This meets the 15% standard referenced above.
Beginning January 1, 2010, buildings not covered in (b) above must achieve an efficiency rate of 15% above the current City of San Antonio energy code that was in effect in 2008 (IECC 2000 with 2001 supplement and ASHRAE 90.1 1999) by complying with any of the following options:
1. COMcheck or other software as approved by Planning and Development Services based on existing codes (ASHRAE 90.1 1999 & IECC 2000 with 2001 supplements) showing 15% or above the passing score.
2. COMcheck based on ASHRAE 90.1 2007. A passing score satisfies the 15% standard referenced above.
3. COMcheck based on IECC 2009 (when IECC 2009 is available and approved by ESL). A passing score satisfies the 15% standard referenced
4. ASHRAE 90.1 2007 energy modeling analysis approved methods. This meets the 15% standard referenced above.
5. ASHRAE Advanced Energy Design Guidelines. This meets the 15% standard referenced above.
6. Software or energy modeling methods or prescriptive building packages as adopted by the City of San Antonio Building Official and/or ESL. A demonstrated passing score satisfies the 15% standard referenced above.
7. Approved compliance methods that meet the new energy requirements herein as adopted by the State of Texas. A demonstrated Passing score satisfies the 15% standard referenced above.
8. USGBC LEED or other third-party certification program that meets or exceeds the energy requirements as approved by the Code Official shall be considered in compliance.
9. Performance rating calculations and documentation shall be in accordance with the International Building Code, "Performance Rating Method", and shall be submitted with each application for a building permit. Documentation, including calculations, shall be prepared by a registered design professional. All new buildings funded and constructed by the city to be built to LEED Silver certification level.
Energy Standard:
Beginning January 1. 2010, energy usage in one-and two-family and multi-family dwellings, 3 stories or less, must achieve an efficiency rate of 15% above the current City of San Antonio energy code that was in effect in 2008 (IECC 2000 with 2001 supplement and ASHRAE 90.1 1999) by complying with any of the following options:
1. IECC 2009 (as approved and/or amended by the City of San Antonio and/or Energy Systems Laboratory (ESL». This meets the 15% standard referenced above.
2. Energy Star Certification Compliance. This meets the 15% standard referenced above.
3. Software or energy modeling tools or prescriptive building packages approved by the City of San Antonio Building Official and/or ESL. A demonstrated passing score satisfies the 15% standard referenced above.
4. Approved compliance methods as adopted by the State of Texas and/or Energy Systems Lab (ESL). A demonstrated passing score satisfies the 15% standard referenced above.
5. Build San Antonio Green, USGBC LEED-H, or other third-party certification program that meets or exceeds the energy requirements as approved by the Code Official shall be considered 10 compliance. This meets the 15% standard referenced above.
6. Beginning January 1, 2010, buildings not covered in (b) above must achieve an efficiency rate of 15% above the current City of San Antonio energy code that was in effect in 2008 (IECC 2000 with 2001 supplement and ASHRAE 90.1 1999)
City Wide Program:
Austin, Texas.
Austin Energy Code
Program Description:
Austin has adopted modifications to the 2006 IECC, requiring bower door tests at .50 ACH for new residential construction, a roof radiant barrier with an emittance of 0.05 or less as tested in accordance with ASTM C-1371, dust testing to verify leakage of supply ducts and return plenum/ducts does not exceed 10 percent of total design airflow, documentation of accurate sizing for HVAC, 25% Energy Star high efficacy lamps, reflective roofing: pitches less than 2:12 require a minimum reflectance of 0.70 or solar reflective index of 78 pitches 2:12 and greater require minimum reflectance of 0.35 or SRI of 29, exterior lighting controls, etc.
Energy Standard:
Local amendments to the IECC include requiring bower door tests at .50 ACH for new residential construction, a roof radiant barrier with an emittance of 0.05 or less as tested in accordance with ASTM C-1371, dust testing to verify leakage of supply ducts and return plenum/ducts does not exceed 10 percent of total design airflow, documentation of accurate sizing for HVAC, 25% Energy Star high efficacy lamps, reflective roofing: pitches less than 2:12 require a minimum reflectance of 0.70 or solar reflective index of 78 pitches 2:12 and greater require minimum reflectance of 0.35 or SRI of 29, exterior lighting controls, etc.
City Wide Program:
Dallas, Texas.
Municipal Standard, 2006
Program Description:
New Municipal Construction over 10,000 ft2 must be LEED Gold, show a 20% reduction in energy, and include 1 extra LEED energy point.
Energy Standard:
Commercial LEED Certification: below is summarized from LEED NC, details vary according to certification program. Mandatory: minimum 10% compliance beyond ASHRAE 90.1-2007, or use of NBI's Core Performance or one of ASHRAE's Advanced Energy Design Guidelines. LEED options include: optimize energy performance, on-site renewable energy, enhanced commissioning, enhanced refrigerant management, measurement & verification, and green power.
City Wide Program:
Dallas, Texas.
Green Building Program, 2008
Program Description:
Phase 1, 2009, energy efficiency and water conservation requirements for all residential and commercial developments Phase 2, 2011, expanding the initiatives for new buildings into a comprehensive green building standard requirement. Residential requires submittal of checklist from one of the following: Build it Green/Green Points, Green Communities, Green Built North Texas, LEED H, or approved equivalent standard. New commercial construction 50,000 ft2 or larger must show 85% of LEED certification level points could be attained. As of 2011 all new residential construction third party verified by nationally recognized program and 17.5% above the 2006 IECC. New commercial must be LEED certifiable (registration with USGC not required).
Energy Standard:
2009: Both residential and commercial must be 15% more efficient than the 2006 IECC. 2009 both commercial and residential must be 17.5 more efficient than the 2006 IECC.
City Wide Program:
El Paso, Texas.
Municipal Building Standards, 2008
Program Description:
New construction and major renovations of City-owned, occupied, or funded buildings over 5,000 sq ft must earn LEED Silver certification.
Energy Standard:
Commercial LEED Certification: below is summarized from LEED NC, details vary according to certification program. Mandatory: minimum 10% compliance beyond ASHRAE 90.1-2007, or use of NBI's Core Performance or one of ASHRAE's Advanced Energy Design Guidelines. LEED options include: optimize energy performance, on-site renewable energy, enhanced commissioning, enhanced refrigerant management, measurement & verification, and green power.
City Wide Program:
Frisco, Texas.
Green Building Program, 2007
Program Description:
The mandatory Frisco Green Building Program addresses both residential and commercial new construction. Commercial elements include energy conservation, mitigation of heat island effect, water conservation, and construction and demolition waste recycling. Residential elements include energy, water conservation, indoor air quality, and construction and demolition waste recycling.
Energy Standard:
Commercial Mandatory Requirements: 100% of all roof areas shall comply with the specifications of the Environmental Protection Agency’s Energy Star Cool Roof Program, shade trees shall be planted along the front façade of non-residential and multifamily structures in accordance with the City of Frisco’s Landscape Ordinance. Residential: Mandatory Energy Star Rating, with a HERS index of 83 or less, including the prescriptive requirements of a programmable thermostat on each level, return air path specifications, all duct, plenums etc. sealed with duct mastic.
City Wide Program:
Houston, Texas.
Green Building Resolution, 2004
Program Description:
The Green Building Resolution set a target of Silver level LEED certification for new construction, replacement facilities, and major renovations of the city of Houston-owned buildings and facilities with more than 10,000 ft2 of occupied space. Houston Airport System Department exempt.
Energy Standard:
Commercial LEED Certification: below is summarized from LEED NC, details vary according to certification program. Mandatory: minimum 10% compliance beyond ASHRAE 90.1-2007, or use of NBI's Core Performance or one of ASHRAE's Advanced Energy Design Guidelines. LEED options include: optimize energy performance, on-site renewable energy, enhanced commissioning, enhanced refrigerant management, measurement & verification, and green power.
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