Under NYC's 2019 Sustainable Roof Laws -- laws 92 and 94 -- most new buildings and buildings undergoing major roof reconstruction are required to include "green" roof features and or solar panels on 100 pct of the available roof space. Presently, according to The Nature Conservancy mapping project of the more than one million roofs in NYC, only about 730 roofs were "green" in 2016.
Buildings are responsible for more than 70 pct of greenhouse gas emissions in NYC, according to the Climate Mobilization Act.
(Source: silive, 12 Jan., 2020) Contact: NYC Climate Mobilization Act, www.council.nyc.gov/data/green
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The building's green facade
will be wrapped with 400,000 plants for low ultraviolet values and to capture over eight tonnes of carbon and produce six tonnes of oxygen annually. Other energy efficiency related features include a "green roof" garden, efficient window glazing to minimize heat gain, a rainwater collection system, external air heat pumps and a focus on incorporating renewable energy.
(Source: Sheppard Robson, dezeen, 11 Mov., 2019) Contact: Sheppard Robson, Dan Burr, Partner, www.sheppardrobson.com
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The Bank of America Tower's energy efficiency and environmental features include: daylight harvesting technology; a 40 pct parking reduction; tenant metering; EV charging stations; a rainwater-collecting facade system; a green roof and others. (Source: US Green Building Council, Bank of America, new kerala, 18 Aug., 2019)Contact: USGBC, Mahesh Ramanujam, Pres., CEO, (202) 552-1500, www.usgbc.org
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Although initially expensive to install, green roofs absorb stormwater, lower heating and cooling costs and increase a building's energy efficiency and thus reduce carbon emissions.
(Source: Nature Conservancy, Public News Service, 14 Aug., 2019) Contact: Nature Conservancy,
Emily Nobel Maxwell, NYC Program Director , 212-997-1880, www.nature.org/en-us/about-us/where-we-work/united-states/new-york
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Throughout the LEED-certification process, the winery reportedly received the highest possible scores in water efficiency and design innovation. The facility uses 100 percent non-potable water for irrigation and implemented original wastewater technologies. The winery also features a green roof with native species, a rainwater harvesting and reuse system; and high-efficiency HVAC with heat recovery for energy efficiency. (Source: Bodega Garzon, Commercial Property Exec, May, 2019)Contact: USGBC, Mahesh Ramanujam, Pres., CEO, (202) 552-1500, www.usgbc.org
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O'Hare has six LEED-certified buildings and over 521,000 square feet of green roofs, more than any other airport in the world.
The combination of sustainable features has cut the O'Hare control towers energy consumption by 25 pct and water usage by 40 pct compared to a traditional control tower design, according to the Commission. (Source: City of Chicago, Chicago Aviation Commission, Connect Chicago, 23 April, 2019)
Chicago Dept. of Aviation, www.chicago.gov/city/en/depts/doa.html Commission; USGBC, Mahesh Ramanujam, Pres., CEO, (202) 552-1500, www.usgbc.org
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Other bills to be votes upon this week would require the city to complete a study on the feasibility of shutting down all 24 gas and oil-burning power plants within city limits, and replacing them with renewables and battery energy storage capacity and green roofs on selected buildings. (Source: NYC Council, Connect New York, 15 April, 2019)
Contact: NYC Council, https://council.nyc.gov
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Green roofs absorb heavy rains, give buildings an extra layer of insulation, increase building energy efficiency, lower carbon footprints, combat urban heat island effect and improve air quality . About 730 buildings covering roughly 40 acres in the Big Apple presently have green roofs.
Download Green Roofs in NYC data HERE.
(Source: Nature Conservancy, Mar., 2019) Contact: Nature Conservancy, www.nature.org;
Green Roof Researchers Alliance, www.greenroofalliance.com, www.greenfoofs.com
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The facility, which opened in January 2018, houses mechatronics, photonics and chemistry classrooms and laboratories and is College of Lake County's first LEED Platinum building.
The facility's energy efficiency -- sustainability features include: photovoltaic solar panels, green roofs of planted vegetation, a geothermal heating and cooling system and energy efficient fume hoods in chemistry labs. Other features include LED lighting and daylight harvesting to reduce the need for electrical lighting. The building's rainwater recovery system collects rain in an underground tank and uses it for waste flushing and reduces potable water use by 41 pct.
Overall, the Science & Engineering Building is designed to reduce building energy use by 66 pct compared with a standard science building of similar size. (Source: College of Lake County, American School and University, Feb., 2019)
Contact: College of Lake County, www.clcillinois.edu; USGBC, Mahesh Ramanujam, Pres., CEO, (202) 552-1500, www.usgbc.org
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In the project, the Stamford Hospital focused on air flow, energy consumption and air quality. The project's LEED qualifying features included:
courtyards and paths to promote healing and provide patient and family respite;
According to city estimates, the original green roof regulation could have added $193,000 -- about 2.8 pct -- to the construction cost of a five-story office building. The new law could cut that increase in half.
Apartment buildings of six floors or less will be exempted from this provision. (Source: Denver City Council, Building Design & Construction, Nov., 2018)
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The new roofs, which will be planted on 10,000 square meters of social housing buildings over 3 years, will incorporate a system of sensors and will retain or release water in response to the weather forecast and will be linked in a network.
The smart roofs project is a partnership between the city of Amsterdam, the water company Waternet, green roof companies Polderdak and Rooftop Revolution, Amsterdam University of Applied Sciences, Vrije Universiteit Amsterdam, housing corporations Stadgenoot, Ymere and De Key, and roof maintenance company Consolidated. The project is being funded by €4.8 million from the EU.
(Source: City of Amsterdam, Smart Cities World, 18 Oct., 2018)
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The November ordinance assembled provisions from existing legislation in other cities while ignoring Denver's different climate, lack of rain, extreme sun, the city's building code and other Denver specific issues. To address these issues, the city created a Green Roof Review Task Force charged with proposing an amended ordinance that would clarify and improve the mechanics of the original initiative while still obtaining its intended environmental benefits.
Under the existing ordinance, owners of existing buildings are disincentivized from replacing roofs in need of repair due to limited compliance pathways and the costs associated with those few options.
To address and corrects these and other related green roof issues, the task force has presented a proposal that exceeds the environmental benefits possible under the existing ordinance and allows for multiple cost-efficient compliance alternatives not available under the present ordinance. The proposal provides an opportunity to creatively combine green space, solar, energy efficiency and certification methods to suit the needs of individual projects.
(Source: City of Denver, Colorado Real Estate Journal, October 2018)
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The coffee shop's built-in sustainability features include: a living green roof packed with plants; a zone-controlled heat pump and energy-efficient LED lighting; heavy insulation for energy conservation; EV charging stations; and others. Additionally, all waste material generated through the construction of the store was diverted from landfill and sent for recycling.
(Source: Starbucks, edie.net, Aug., 2018)
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Green roofs can absorb rain and help reduce combined sewage overflows, absorb greenhouse gasses and help mitigate climate change, and clean the air of pollutants.
Vancouver city staff will develop a green roof policy in consultation with industry and the community.
(Source: City of Vancouver, Toronto Star, 27 July, 2018)
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A project fact sheet notes the building's sustainability elements included: a ventilation system that meets a defined threshold for thermal energy demand intensity; onsite renewable energy systems that provide a minimum of 5 pct of building energy consumption; maximized day-lighting opportunities; the building is oriented to minimize heat gain, using sustainable materials and high-performance building systems; and green roofs on 50 pct of the roofs throughout the campus. The facility achieved LEED Gold certification.
(Source: Canada Green Building Council, DCN News services, 19 June, 2018) Contact: Canada Green Building Council, Thomas Mueller, Pres., CEO, (613) 241-1184, www.cagbc.org
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Constructed in 2015, the building features a concave facade of curtain wall glazing; a green roof consisting of a Sedum planting system which is designed as a wildlife habitat; a complete wet and dry waste recycling system; and other energy efficient features.
The building is being recognized as one of Scotland's greenest and most sustainable office buildings.
(Source: Project Scotland, April, 2018)
Contact: The Green Organization, +44 01933 665591, www.thegreenorganisation.info
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LAPT is a 110-credit system that covers the wide range of potential performance benefits and ties into and builds upon existing rating systems such as LEED and SITES. The program aims to improve the performance of living architecture systems by ensuring that they meet minimum standards, and act as a guide for future policy making, project design, installation, and maintenance.
LAPT is designed to provide the following benefits:
According to University of Colorado College of Architecture and Planning Assist. Prof. Leila Tolderlund, "There really are a lot of pre-made modular green roof systems that meet EPA minimum requirements. Green roofs are more expensive to build than conventional roofs, but they tend to last four to five years longer than conventional flat roofs."
(Source: Denverite, 21 Nov., 2017)
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To qualify for LEED certification, the ABB campus incorporate natural light throughout, features open concept flexible working spaces, green garden certified furniture, ergonomic and height adjustable work stations, eleven green walls, increased recycling capabilities including shared compost and garbage bins, low water consumption toilets, efficient heating and cooling including the re-circulation of over 2 MW of heat generated through testing activities, and energy efficient LED motion detection lighting in most of the structure.
The building exterior incorporates three green roofs and a white roof (to reduce the absorption of heat), EV charging stations, bike racks for employees and visitors and a preferred parking program for carpooling and hybrid vehicles. (Source; ABB Canada, Nov., 2017)
Contact: ABB Canada, Nathalie Pilon, President , www.abb.ca; Canada Green Building Council, Mark Hutchinson, Director of Green Building Programs, (866) 941-1184, firstname.lastname@example.org, www.cagbc.org
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The owners of existing buildings could get a waiver and pay a fee in lieu of installing a green roof at the time of roof replacement if their building was not engineered to withstand the additional weight of a green roof. (Source: Builder, Various Media, Denverite, 6 Nov., 2017)
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The second Platinum accolade is based on its operations relating to waste management, energy efficiency, indoor water use reduction, and facility maintenance and renovations. With the new certification, the convention center is now the first double LEED Platinum convention center in the world.
The convention center boasts a six-acre green roof, a restored marine habitat, a black water treatment plant that recycles grey and black water for toilet flushing and green roof irrigation, a seawater heating and cooling system, floor-to-ceiling windows for maximum natural light, and local wood materials harvested in a sustainable manner.
(Source: Vancouver Convention Center, Daily Hive, 10 Oct., 2017) Contact: Vancouver Convention Center, BC Pavilion Corporation, Ken Cretney, President and CEO, www.bcpavco.com; Canada Green Building Council Thomas Mueller, Pres., CEO, (613) 241-1184, www.cagbc.org
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