Block 21 200 Lavaca Street Austin, Texas 78701
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BLOCK 21 200 LAVACA STREET AUSTIN, TEXAS 78701 SUSTAINABILITY CASE STUDY Credit: Andrew Pogue v0811 Credit: Arthur Andersson Overview Owner: CJUFII Stratus Block 21 LLC Location: 200 Lavaca Street, Austin, TX 78701 Building Type: New Construction: The Residences at W Austin - 34% W Austin (Hotel) - 26% ACL Live at the Moody Theater - 13% Retail / Office - 5% Other - 22% Size: 1,082,150 sq. ft. (100,535 sq. meters) Lot size: 76,666 sq. feet (7,122.5 sq. meters) Building footprint: 65,977 sq. feet (6,129 sq. meters) Project Scope: 37-story mixed-use high-rise tower (5-story podium and 32-story tower) Completion Date: Spring 2011 2 Block 21 Sustainability Case Study Design / Construction Team Design Architect Landscape Architect Andersson-Wise Architects Talley Associates www.anderssonwise.com www.talleyassociates.com Architect of Record Lighting Design BOKA Powell Horton Lees Brogden Lighting Design www.bokapowell.com www.hlblighting.com Structural Engineer Sustainable Design / LEED® Thornton Tomassetti Consultant www.thortontomasetti.com Center for Maximum Potential Building Systems Civil Engineer www.cmpbs.org Bury & Partners www.burypartners.com Commissioning Authority ACR Engineering Inc. Mechanical, Electrical, Plumbing www.acreng.com Engineer JJA Inc. Contractor www.jjainc.com Austin Building Company www.austin-ind.com Interior Design Heather Plimmer Stratus Properties Inc. www.stratusproperties.com Block 21 3 200 Lavaca Street • Austin, Texas 78701 Context Block 21 is a mixed-use high-rise property people are employed at ACL Live at the located in Austin’s Central Business Dis- Moody Theater, retail establishments trict. The 1.08 million square foot build- and offices. ACL Live, the new home of ing includes the W Austin Hotel and The PBS Station KLRU’s legendary Austin Residences at W Austin; Austin City Lim- City Limits television series, will also host its Live at the Moody Theater, a 2,700+ 75 - 100 concerts annually as well as a capacity live music venue and recording variety of private events. studio; restaurants and bars; a spa; and retail and office space. The world-class W Block 21’s location in the heart of Aus- Austin and The Residences at W Austin tin’s vibrant downtown 2nd Street District include 251 hotel rooms and 159 luxury provides ready access to public transpor- residential condominiums, respectively, tation, general services, nightclubs, arts, and employ approximately 300 full- and city, county, and state government offic- part-time staff. More than 450 additional es, and picturesque Lady Bird Lake. Sustainable Design Commitment From its inception, Block 21 commit- environmental stewardship. The project ted to an integrated design process and is targeting LEED Silver certification and third-party certification through the U.S. Austin Energy Green Building Program Green Building Council’s LEED for New 4-Star rating. Construction, a nationally recognized green building rating system, and Austin Stratus Properties and the Canyon John- Energy’s Green Building Program. Sus- son Urban Fund II, the project’s owner, tainable design features include low-im- has positioned Block 21 to be a hall- pact site development; water and energy mark of sustainability throughout its op- efficiency; recycled-content, regionally erational life cycle. To this end, a green sourced- and manufactured, and low- operations plan and tenant guidelines emitting construction materials; diver- coordinated between the developers, the sion of construction debris from landfills; project sustainability consultant Center abundant daylight and views; and health- for Maximum Potential Building Systems ful indoor air quality. Block 21 seamlessly and principal tenants establishes a cohe- combines cosmopolitan elegance with sive framework to realize this goal. 4 Block 21 Sustainability Case Study Credit: Andrew Pogue Site, Land Use, And Community Connectivity Block 21 embodies the project owners’ to bike to work. During performances at goal of combining high style with a sus- ACL Live, patrons have access to an ad- tainable urban lifestyle and reduced en- ditional 47 bike racks located across the vironmental footprint. The City of Austin street at Austin City Hall. is an established leader in green build- ing. Austin’s Central Business District To promote alternative transportation op- provides a vibrant cultural and economic tions, Block 21 provides a 20% discount context to attract and sustain an environ- on valet parking to hotel, office and re- mentally astute, cosmopolitan popula- tail guests who drive low-emitting, fuel- tion. efficient cars. Additionally, residents of The Residences at W Austin receive Block 21’s central location is a compelling complementary memberships to the Car- environmental asset, enabling employ- 2Go car-sharing program. Museums, the ees, residents and guests to maintain a State Capitol, restaurants, nightclubs, car-free lifestyle. Located within one-quar- business offices, parks and green spac- ter mile of six bus stops, more than 420 es, and other services and amenities are rides are available and readily accessible within accessible walking distance. each day. In addition to locked bike stor- age compartments provided to W Austin The Block 21 site, formerly an asphalt residents, 48 bike racks and two showers parking lot, was determined to be a are available for employees that choose brownfield upon an environmental as- Block 21 5 200 Lavaca Street • Austin, Texas 78701 sessment undertaken during the project’s and curbing urban sprawl. early phase. The site was exposed to years of contaminated runoff from leak- Additional measures to enhance the ing cars and offsite releases of pollutants project’s long term environmental perfor- into the groundwater. As part of the proj- mance include efforts by the project’s civil ect team’s commitment to environmental engineer, Bury + Partners, to filter incom- restoration, the contaminated soil was ing groundwater in perpetuity to prevent excavated from the site and properly dis- recontamination from off-site sources. posed. Brownfield redevelopment cleans This pond also collects and filters storm- up and puts into productive reuse these water that flows off the building, mediat- compromised sites and provides the co- ing the deleterious effects of stormwater benefits of conserving undisturbed land pollution and stream erosion. Integrative, Climate-Responsive Design Andersson-Wise Architects developed a with the envelope design, provides for in- spectrum of integrated features to sus- tegral shading of the windows throughout tain the building’s environmental integ- the day, eliminating the need for added rity over its life. All parking is located shading devices. Carefully designed and underground, eliminating a massive, positioned full cut-off exterior lighting fix- heat absorbing impermeable parking lot. tures protect the dark night sky by pre- The heat island effect—a phenomenon venting uplighting and limiting light tres- of warmer ground level temperatures pass beyond the project’s property line. in urban areas resulting from increased absorption of heat by dark-colored and non-reflective impervious surfaces— increases demand for air-conditioning and can result in higher energy usage and compromised air quality. Measures to mitigate the heat island effect include light-colored, reflective paving surfaces, trellises and vegetation on the pool deck and plaza level (that also provide verdant shaded seating areas), and a non-halo- genated, single-ply membrane highly re- flective roofing material. Block 21’s building orientation takes stra- tegic advantage of the prevailing south- easterly breezes, with operable windows on the ground level on the southeastern façade to allow for passive cooling given appropriate climatic conditions. Addition- ally, the building’s orientation, coupled Credit: Andrew Pogue 6 Block 21 Sustainability Case Study Water Conservation Water is a precious resource in Central in the residences and hotel rooms, re- Texas. Having experienced successive spectively, and metered low-flow lavatory droughts over the last decade, the Block fixtures, meet or exceed the performance 21 ownership and design team priori- of code-compliant fixtures at the time of tized operational water savings as a sig- procurement, substantially reducing in- nature achievement resulting in annual door potable water usage by more than water savings of 2.4 million gallons. The 30% compared to code. Complement- high-performance, high-quality plumbing ing the project’s interior water savings, fixtures throughout Block 21, including Block 21’s landscaped areas celebrate 1.6/0.8 gallon per flush (gpf) dual-flush the beauty and diversity of drought-tol- toilets in guestrooms, residences, and ho- erant native and non-invasive adapted tel restrooms and 0.5 gpf urinals through- species. A 76% landscape-related water out the project, contributed to this goal. savings resulted from appropriate plant Showerheads designed with 1.75 gallon choices combined with high efficiency ir- per minute (gpm) and 1.5 gpm flow rates rigation equipment. Energy and Atmosphere Reducing energy demand lowers the energy requirements associated with building’s operational costs and mitigates powering sound equipment and stage environmental and human health conse- lighting. To minimize this energy us- quences of climate change. With this goal age, LED stage lighting that dramatically in mind, the Block 21 design team speci- curbs energy use while delivering high fied and installed high performance light- quality