Rethinking Wood as a Material of Choice

Costs less, delivers more

Earn 1 AIA/CES HSW learning unit and 1 GBCI hour for LEED Credential Maintenance

CEU Publish Date: September 2012

Phot

o by

Tim

othy

Hur

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Best Practices

reThink Wood sponsors this Continuing Education Unit provided by McGraw-Hill Publishers. This course is registered with AIA CES and GBCI for continuing professional education.

As such, it does not contain content that may be deeded or construed to be an approval or endorsement by the AIA or GBCI of any materials of constructions or any manner of handling, using, distributing, or dealing in any material or product.

Credit earned on completion of this course will be reported to AIA CES for AIA members. Certificates of completion are available for self-reporting and record-keeping needs.

Questions related to the information presented should be directed to reThink Wood upon completing this program.

AIA Provider Number: K029 GBCI Provider: McGraw-Hill PublishersAIA Course number: K1210E GBCI Course number: 009008689AIA Credit: 1 HSW/SD hour GBCI Credit: 1 GBCI CMP hour

Copyright Materials

This presentation is protected by U.S. and international copyright laws. Reproduction, distribution, display and use of the presentation without written permission of reThink Wood is prohibited.

© 2014, reThink Wood, www.rethinkwood.com

Learning Objectives

Compare the material, project and environmental costs of wood to other building materials.

Explain innovative wood technologies and how they are contributing to a wide range of sustainable designs.

Discuss the environmental impact of wood throughout its life cycle, including its renewability, certification options, impacts on energy efficiency, low carbon footprint, and end-of-life recycling and reuse.

Examine research and examples demonstrating the positive impact of exposed wood on a building’s occupants.

Table of Contents

Section 3

Wood and the Environment

Section 1

Cost Conscious

Section 2

Innovative Uses for a Traditional Building Material

Section 4

Bringing Nature to the Interior Environment

COST CONSCIOUSSECTION 1

Helps the Bottom Line

Locally sourced

Lower material costs

Cost less to install

Construction is fast

For El Dorado High School in Arkansas, CADM architects saved $2.7 million by switching to wood framing from the original design

Photos: W.I. Bell (under construction); Dennis Ivy, courtesy WoodWorks

Emory Point

Location: Atlanta, Georgia

Structural Engineers: Ellinwood + Machado Consulting Structural Engineers

Occupancy: 442 units

Completed: 2012 (phase one)

Type of construction: One five-story wood-frame building over slab-on grade and three four-story wood-frame buildings over one-story concrete podiums

A number of systems were considered but wood was the most economical. For the structural frame portion alone, the wood design cost approximately $14 per square foot compared to $22 per square foot for a 7-inch post-tensioned concrete slab and frame. The huge wood-frame project was completed in just over a year, which provided additional cost savings.Photo courtesy of Ellinwood + Machado Structural Engineers

Marselle Condominiums

Location: Seattle, Washington

Architect: PB Architects

Occupancy: 132 units

Completed: 2009

Environmental recognition with local green building programs was a plus for the Marselle Condominiums, but cost was the driving factor in the decision to use wood construction. If the project had been built using all concrete, for instance, it would have cost about 30 percent more.

Photo by Matt Todd, courtesy of WoodWorks

Spanaway Junior High School, Bethel School DistrictLocation: Spanaway, Washington

Bethel School District (BSD) is proving that building green doesn’t have to cost a lot. While the District reports an 81 percent ENERGY STAR rating overall, several of their 17 elementary and six junior high schools have a rating ranging from 95 to 98 percent. While size, configuration and age of the 23 facilities varies, one thing remains constant: each is wood-frame.

Photo by Bethel School District

Cost-Effective Green Schools

INNOVATIVE USES FOR A TRADITIONAL BUILDING MATERAL

SECTION 2

Advanced Seismic Engineering

Cathedral of Christ The Light

Oakland, California

Design Architect: Skidmore, Owings & Merrill

• Designed to last 300 years and withstand a 1,000-year earthquake

• Space frame structure comprised of glulam and steel-rod skeleton with a glass skin

Photo by Timothy Hursley

Cross Laminated Timber (CLT)

Speed record: Taking speed of construction to an entirely new level, the two-story Long Hall in Whitefish, Montana, designed by Datum Design Drafting and engineered by CLT Solutions, took just five days to erect and gave the owner a sustainable, energy-efficient building. It was the first commercial building in the U.S. made from CLT.

Photo by gravityshots.com

Innovative Products

Cross Laminated Timber (CLT) Parallel Strand Lumber (PSL) Glued Laminated Timber (Glulam) Prefabricated Paneling Systems

Photo courtesy of naturallywood.com

Richmond Olympic Oval

Richmond, British ColumbiaArchitect: Cannon DesignRoof Structural Engineer: Fast+Epp Structural EngineersCompleted: 2010

One of the 2010 Olympic Winter Games’ most prominent buildings and venue for the long track speed skating events, the Richmond Olympic Oval features a one-of-a-kind, all-wood roof structure.

The Trend TowardTaller Wood Buildings

Photo courtesy of Land Lease

At 10 stories tall, Forté in Melbourne, Australia, was the tallest timber apartment in the world when it was completed in 2012.

Photo courtesy of naturallywood.com

WOOD AND THE ENVIRONMENTSECTION 3

LCA for Building Products

Analysis covers extraction or harvest of raw materials through eventual demolition and disposal or reuse.

.

Source: Building Green With Wood www.naturallywood.com

LCA and Wood

Wood outperforms other materials in terms of embodied energy, air

and water pollution, and greenhouse gas emissions.

Source: Data compiled by the Canadian Wood Council using the

ATHENA EcoCalculator with a data set for Toronto, Canada

Sustainable Source

Verifies that a forest meets the requirements of the certification standard

Two international umbrella organizations – FSC and PEFC

More than 50 certification standards worldwide

Comparing Wall Assemblies

Source: CORRIM

Minneapolis House Wood Frame Steel Frame DifferenceSteel vs.

Wood(% change)

Embodied energy (GJ) 250 296 46 18%

Global warming potential (CO2 kg) 13,009 17,262 4,253 33%

Air emission index (index scale) 3,820 4.222 402 11%

Water emission index (index scale) 3 29 26 867%

Solid waste (total kg) 3,496 3,181 -315 -9%

Atlanta House Wood Frame Steel Frame DifferenceSteel vs.

Wood(% change)

Embodied energy (GJ) 168 231 63 38%

Global warming potential (CO2 kg) 8,345 14,982 6,637 80%

Air emission index (index scale) 2,313 3,372 1,060 46%

Water emission index (index scale) 2 2 0 0%

Solid waste (total kg) 2,325 6,152 3,827 164%

Carbon Footprint

According to the U.S. EPA Greenhouse Gas Equivalencies Calculator, estimated carbon benefits for the five-story Avalon Anaheim Stadium equate to a year’s worth of emissions from 2,370 cars or the energy to operate an average home for 1,050 years.

Photo by Arden Photography,courtesy of VanDorpe Chou Associates

Calculated using the WoodWorks Carbon Calculator, available at woodworks.org

Avalon Anaheim StadiumCaliforniaArchitect: Withee Malcolm Architects

Calculating Carbon Benefits

Photo: © Arden Photography

Energy Efficiency

Precise manufacturing in systems such as CLT results in tight tolerances and exceptional air tightness.

Low thermal conductivity Easy to insulate to high standards Highly energy efficient – less

impact on environment in terms of Embodied energy Air and water pollution Carbon footprint

Photo courtesy of naturallywood.com

Recycle / Reuse

Service Life of Actual Buildings The service lives of

most buildings are likely far shorter than their theoretical maximum.

The majority of demolished steel and concrete buildings in the study were less than 50 years old.

The Barn at FallingwaterLocation: Mill Run, Pennsylvania

Architect: Bohlin Cywinski Jackson

This renovated 19th century barn is built into a hillside with a 1940s dairy barn addition. The 12,000-square-foot adaptive reuse project’s interior is rich with recycled and salvaged materials that celebrate the region’s agrarian heritage.

Photos courtesy of naturallywood.com

BRINGING NATURE TO THE INTERIOR ENVIRONMENT

SECTION 4

Photo by Costea Photography; courtesy of LPA Inc.

Studies have shown that the presence of visual wood surfaces in a room lowers stress – one way to create a healthier built environment.

Thunder Bay Regional Health Sciences CenterLocation: Thunder Bay, Ontario

Architect: Salter Farrow Pilon Architects

Thunder Bay Regional Health Sciences Center in Ontario was the first hospital in Canada to gain approval for the use of wood as a primary structural element.. The use of wood extensively throughout the structure provides a bright and optimistic atmosphere for patients, staff and the community.

Photo courtesy of naturallywood.com

Robert Paine Scripps Forum for Science, Society and the EnvironmentLocation: La Jolla, California

Architect: Safie Rabines Architects

A great example of a wood building designed to blend with its environment to give occupants a deep connection to nature inside and out.

Photo by David Hewitt/Anne Garrison Architectural Photography

Tamarack Ski LodgeLocation: Heavenly Lake Tahoe Ski Resort, South Lake Tahoe, California

Architect: Collaborative Design Studio

The building was designed to create an appealing structure that blended into the dominant beauty of the surrounding mountain environment.

Photo by Carrie Compton

Wood costs less*—economically and environmentally—while delivering more in terms of its beauty, versatility and performance.* Source: http://www.rethinkwood.com/wood-costs-less/material-and-building

Top and right photos courtesy of naturallywood.com; Bottom photo by Timothy Hursley

For more information on building with wood, visit rethinkwood.com

THANK YOU!