Successful Green Roof Design in Arid Regions

Transcription

1 2012 ASLA Annual Meeting Education Session FRI C-7 Successful Green Roof Design in Arid Regions Speakers: Kristina Floor, FASLA, LEED AP Todd Huston, ISS Grounds Control, Inc. Jeff Stanton, AIA, LEED AP BD+C

2 Successful Green Roof Design in Arid Regions FRI C-7 Learning Objectives & Presentation Outline Arid regions pose challenges for any open-space design, especially in an urban environment. Heat, shade, and water are critical factors. Further, any over-structure installation poses potential long-term problems. This session will present successful landscape design solutions for green roofs in arid regions. Increase understanding of the different building structural systems that influence the design of plazas and landscape over occupied space. Understand how to incorporate a green roof into a project within an arid climate and have it stand the test of time Understand what factors influence green roof design from a design, implementation and maintenance viewpoint Course Outline I. Introduction a. Benefits of incorporating green roofs b. Common concerns in the implemenation of green roofs c. Testing and evaluation of green roofs in arid climates d. Cost factors / Life cycle e. Green roofs as a part of an overall water conservation approach II. Intensive Green Roof Design a. Definition of Intensive Green Roof Design b. Building Structural Systems affect on design strategies i. Post Tension ii. Cast-in-Place iii. Structural Ts c. Design approach d. Site sections and details e. Special considerations i. Engineered soil versus native soil ii. Drainage Systems iii. Irrigation systems iv. Waterproofing systems v. Fertilizer injection systems vi. Zone of Backfill / Transfer Slabs III. Extensive Green Roof Design a. Definition of Intensive Green Roof Design b. Design approach c. Site sections and details d. Mock-ups / test beds e. Special considerations i. Container plants versus sedum beds ii. Micro-climate and exposure considerations iii. Irrigation system, iv. Moisture sensors v. Drainage systems IV. Construction Strategies a. Construction strategies from a scheduling standpoint, access standpoint and weight limitations b. Partnership between Owner, Contractor and design team to ensure success in implementation and downstream maintenance V. Maintenance Considerations a. Commitment to design strategies b. Special maintenance considerations for Intensive systems c. Daily / weekly / monthly / yearly requirements

3 Successful Green Roof Design in Arid Regions FRI C-7 Speaker Bios Kristina Floor, FASLA, LEED AP SmithGroupJJR Kris serves as Design Principal for Landscape Architecture for SmithGroupJJR, known for providing innovative sustainable design solutions for many projects across the nation. Her 30-year career aims specifically towards large mixed use projects primarily within the Phoenix area, many of which have incorporated street level roof gardens, raised terraces & green roof design. Her work includes a series of urban plazas and landscapes which have been nationally recognized from a design standpoint. These projects, which often pose challenging conditions, have also been recognized for their long term success. Todd Huston ISS Grounds Control, Inc. Todd Huston has been employed with ISS Grounds Control, Inc. for over 21 years. He is fluent in all phases of landscape construction, landscape maintenance and green roof installation including design, estimating, project management, and customer relations. Notable projects in Arizona include Optima Camelview, Safari Drive, Westcor Malls and Marriot Desert Ridge Resort. Currently Todd acts as the General Manager for operations throughout Arizona as well as financial reporting and office management Jeff Stanton, AIA, LEED AP BD+C SmithGroupJJR Jeff Stanton is Sustainable Design Director for SmithGroupJJR s Phoenix office. With over 32 years experience as an architect/project manager, he has been a passionate advocate for the community and environment and looks for ways to bring sustainability to all of the firms projects regardless of formal certification as well as improve the firms operations. Jeff is a past board member of the USGBC Arizona Chapter and past Governing Council member of the USGBC-AZ Central Branch. Jeff is currently involved with the USGBC West Region Arizona Chapter Regionalization Task Force which is responsible for determining regionally based LEED Credits as well as AIA s Large Firm Roundtable on Sustainability whose efforts have been instrumental in helping firms to adopt the AIA s Commitment to the 2030 Challenge and reporting their results. In addition to being published, he has presented on topics of sustainability at Greenbuild, Scottsdale GreenBuilding Expo, AIA Committee on the Environment and the AIA Arizona State Conference.

4 Banner Health Banner Good Samaritan Healing Garden Phoenix, Arizona This project was a collaboration between Floor & Ten Eyck, The Orcutt/Winslow Partnership and Joan Baron, Artist. The challenge was to take an existing concrete courtyard (all over-structure) and turn it into a multi-sensory garden. Taking a cue from the adjacent curvilinear concrete hospital tower, sinuous concrete walls were created at seat height to add the dimension of human scale. These form the terraced garden that is visible from the patients rooms and the lobby of the hospital. The native, medicinal plants and the water feature that slip through the garden symbolize the different stages of life. Subsequently, JJR came back to the project for upgraded landscape improvements, complimenting the original garden design. Size 20,000 s.f. Services Landscape Architecture Hardscape Design Water Feature Design Artist Design Coordination Budget $75, $60, Completion October 1996 November 2005

5 Optima Camelview Village Scottsdale, Arizona This highly technical over-structure condominium community incorporated the unprecedented use of extensive green roofs totaling more than 500,000 square feet over the multiple 7-story structures. Camelview Village is the first project to incorporate this type of planting system in an arid environment presenting numerous viability, maintenance and aesthetic challenges. Our Studio provided hardscape, water feature and landscape design for the overall 13 acre site. In conjunction with Dr. Chris Martin and MSW Nurseries, we established a series of above ground test beds to test the viability of various plant, soil and irrigation combinations to determine the right balance between form and function in the final design. Having completed construction documents through 90% completion, as a design-build organization working with the home buyers, Optima used the documents and test bed results as a framework to construct the project. As a result, significant changes to the original concepts, details and specifications were made during construction. Completion 2009 Size 13 acres Cost Total: $8,900,000 Landscape + Hardscape Awards ALCA -President s Award 2008 Valley Forward Association -Environmental Design Excellence Award 2008

6 Scottsdale Waterfront Phase 1 & 2 Scottsdale, Arizona Our Studio developed the overall site theme and image for Scottsdale Waterfront, a high-end, mixed-use project located in downtown Scottsdale. The residential component is comprised of twin high-rise residential towers located in the heart of the site surrounded by the mid-rise retail and office space along the street frontages. The Arizona Canal forms the southern edge. The master plan draws heavily from desert landscape imagery, as well as historical references of Scottsdale for inspiration. The concept incorporates the bold forms, colors and textures of native cacti and cactus flowers throughout the plazas and public spaces as an overall unifying theme. Strong chroma paving, sculptural walls, fabric shade structures and custom light fixtures create a unique sense of place while providing interest and texture. Completion 2007 Size 14 acres Cost $1,500,000 Landscape + Hardscape Awards 2008 Valley forward Association-Environmental Excellence Award 2008 AZ RE RED Awards -Best Multi- Family Project

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