Item 3: Green Roofs Update from Austin Energy Green Building — original pdf

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Austin Energy Green Building Green Roofs Update Kurt Stogdill Green Building and Sustainability Manager January 21, 2020 © 2018 Austin Energy Item 3AEGB Green Roofs Update Recent Efforts to Advance Green Roofs in Austin Education Innovation Standardization AEGB has hosted 3 recent tours of Commercial Buildings with Green Roofs and a Professional The AEGB Commercial Team contributed calculators and wrote a Pilot Point for the The AEGB Team will assist in the roll out of Functional Green to Integrate Nature into the Development Seminar to Educate Design Innovation Guide to prepare feedback for the City Professionals Functional Green Team 2 Green Building Education Education is one of AEGB’s core functions. We provide free professional development seminars and tours instructed by industry experts that qualify for valuable continuing education hours. This ensures Austin’s design community is both prepared and inspired. “Education in the foundation upon which we build our future.” -- Christine Gregoire (Former Governor Washington State) 33 3 AEGB Tours of Green Roofs The Dell Medical Center Texas Mutual Insurance COA Central Library The green roof design was performed by the Ladybird Johnson Wildflower Center and features increased soil depth and a hearty wildflower blend for Austin’s harsh weather conditions A great demonstration of Biophilic Design Principles that support human health and wellbeing through connection to nature The accessible green roof at the library features a thriving oak tree and solar panel shading, highlighting Austinite’s love for our natural environment and passion for its preservation 4 AEGB 2/12/19 Professional Development Seminar A Holistic Deep Dive into Designing to Optimize Urban Landscape Ecology Danielle Pieranunzi GBCI SITES Initiative Katie Coyne Asukura Robinson Amy Belaire The Nature Conservancy A Rating System for designing, developing and A Landscape Ecologist with a focus on resilient Program Development for Urban Nature maintaining sustainable landscapes urban site designs Conservation and Functional Green Contributor 5 Green Building Innovation “Integrating Nature into the City” Creative design of vegetated areas into new construction or redevelopment on dense urban sites AEGB is working with Development Services and the Office of Sustainability to pilot initiatives prior to wider implementation through code 66 6 Three AEGB Pilot Points for Urban Habitat Restoration Assess Perform the Site Excel Share Exceed the Established Threshold Share Information about Cost Evaluate all of the features on site designated for restoring Austin’s urban nature habitats Exceed the benchmark for urban ecological This data will help inform the policies impact of restoration and regeneration the City’s Affordability Goals 7 Pilot Project: 70 Rainey Four-Star AEGB Rated: “A Park in the Sky” • The Tenth and Eleventh floors feature gardenlike and immersive ecological architecture • A verdant living wall wraps the open air parking garage that houses abundant EV charging, including DC Fast • Green Choice Participant for 100% of the electricity 8 Suspended Pavement Systems Emerging Technology • Structural support for infrastructure enables trees to establish healthy root systems • Strong enough to support pavement with foot and car traffic • Will enable trees to grow to their full ecological and economic potential • Will help shade sidewalks for pedestrians and curtail urban heat island effects 9 Blue Roofs (aka Water Roofs) Emerging Technology Designed for temporary storage and gradual release of water, they are less expensive than green roofs and provide the same storm water benefits 10 Codification: Functional Green Planned for release in the updated Environmental Criteria Manual AEGB has contributed development tools including Calculators for HVAC Condensate and Rainwater Collection and Landscape Irrigation Requirements Functional Green is focused on dense urban sites and is one of the several Innovative Performance points being piloted by Austin Energy Green Building 1111 11 Functional Green Goals 1. Integrate Nature 2. Provide Flexibility 3. Straightforward Into Parcels where building cover and impervious surfaces might otherwise Multiple approaches can be taken to accomplish the ecological benefits of a Clear Implementation and Review based on a scoring system that represents the prevent it standard landscape code ecological function of a site relative to the total site area. 12 Functional Green Applications • Applies to sites with: • Proposed Impervious cover limit greater than threshold, generally within the urban watersheds • Sites outside the urban watershed that already have an impervious cover that exceed the threshold • Weighs the Ecological and Economical Benefits of Landscape Elements 13 Ecological and Economic Benefits of Landscape Elements Over 120 published studies were reviewed to identify the benefits that could be expected from each Landscape Element in Austin. Attributes: 14 Ecological and Economic Benefits of Green Roofs Besides preserving existing trees, intensive (followed by extensive) green roofs provide the greatest level of cumulative benefits, they also come at the highest initial cost of the landscape elements evaluated. 15 Green Roofs in Austin are becoming more Numerous The Ronald McDonald House, The Texas Mutual Insurance Headquarters Building, the Dell Children’s Medical Center of Central Texas, Escarpment Village, the Austonian, Palisades West, the Dell Teaching Hospital, 70 Rainey Street, 5th + Colorado, the COA New Central Library, Austin City Hall, etc… 16 ©2018 Austin Energy. All rights reserved. Austin Energy and the Austin Energy logo and combinations thereof are trademarks of Austin Energy, the electric department of the City of Austin, Texas. Other names are for informational purposes only and may be trademarks of their respective owners.