CLT 3xW The What, Why and When success story of Cross Laminated - - PowerPoint PPT Presentation
CLT USA in the United States 2012 CLT 3xW The What, Why and When success story of Cross Laminated Timber Technology and the future opportunities for the Southern Pine Industry Presented by MDS10 pllc, Architects and CLT USA, llc C. Crawford
Presented by MDS10 pllc, Architects and CLT USA, llc
Michael J. DeVere, Architect
new industry sub-sector for cross laminated timbers (CLT) and build and operate the first manufacturing plant for CLT panels in the United States.
projects throughout the USA. During the past four years they have been researching the use of CLT in Europe and Canada having made numerous trips abroad. Their knowledge
have been invited to present on the subject at numerous seminars, symposiums and lectured at colleges and universities across the US.
design and usage, market development, plant design, manufacturing processes, timber supply, logistics and infrastructure.
Innovations and Woodworks Association.
southern yellow pine and hardwoods in the manufacture of CLT
production and use of CLT in commercial construction in the US
Methodist Church Bell Tower in Gastonia North Carolina
Cross-Laminated Timber (CLT) panel consists of a series of milled timber planks that are stacked, glued and laminated in perpendicular layers. The gluing takes place using ecologically friendly adhesives that are both solvent-free and formaldehyde-free. The glue is applied automatically over the whole surface and then subjected to approximately 120 pounds per square inch of pressure that provides a very high-quality level of adhesion.
Material used in the fabrication of CLT Panels are factory dried to achieve a very low moisture content (12%).
Resulting panels are strong and have favorable acoustic, thermal, fire resistant and seismic resistant characteristics.
Environmentally preferable substitute for concrete, steel, and oriented strand board
Use to build energy-efficient structures
Extensively used in Canada , Europe, Japan and now in Australia.
CLT dialogue before 2008
CLT dialogue 2008 and beyond
CLT Market Development 2008
CLT Market Development 2012
Estimated US market size is greater than $1.5 billion annually
CLT Production Development 2012
CLT Energy Savings Concept
CLT Energy Savings Concept
CLT Energy Savings Concept
CLT Energy Savings Concept
CLT Energy Savings Concept
CLT Energy Savings Concept
CLT Energy Savings Concept
Sustainability
Sustainability
Sustainability
Sustainability
Sustainability
Sustainability
Sustainability
Sustainability
CARBON FOOTPRINT
across its lifecycle. When compared to other building materials; 1 ton of brick = 4x for 1 ton of wood. 1 ton of concrete = 5x for 1 ton of wood. 1 ton of steel = 24x for 1 ton of wood. 1 ton of aluminum = 126x for 1 ton of wood.
Use of Southern Yellow Pine more economical than present use of Spruce and Fir.
Southern Yellow Pine grows up to 3x faster than other species currently being used in the production of CLT.
Use of relatively low value sideboards
and #3 can be used in production.
Rapid on-site erection and fewer construction delays due to prefabricated elements.
Fast and dry installation, immediate durability.
Reductions in on-site waste as wall, floor, and roof elements are pre-cut.
Reduction of on-site construction noise by eliminating the use of most saws and hammers.
Easier on-site installation of plumbing, electrical, and HVAC duct systems.
COST EFFECTIVE
Sound Insulation due to the inherent acoustic protection of solid mass elements.
Fire Protection due to the resistance to spread and the structural stability of solid wood having significant thickness.
Load-Bearing and seismic strength. Successful testing and research has been conducted in Japan.
Dimensional Stability. Multi-layer slab effect, shrinking and swelling negligible.
Air Tightness and Thermal Benefits. Ambient room temperature is maintained with approximately one third the heating and cooling energy.
Visible Quality Opportunities. CLT can be sanded or planed and left exposed.
Living Space Comfort. Insulation properties moderate temperature and humidity.
SUPERIOR BUILDING PERFORMANCE
Low Carbon Footprint because wood products store carbon and take little energy to produce.
Carbon Neutral Buildings wood contributes to overall neutrality because more carbon is removed from the atmosphere by the growing tree than is emitted during the process of transforming it into a product. This means wood products carry a “carbon credit” which helps offset the “carbon Debt” imposed by other building materials.
Safe and Healthy Environment. Use of wood adhesives that are free of toxins assures there is virtually no off-gassing of pollutants into the atmosphere or indoor environment.
The use of CLT construction will provide a cleaner, greener, faster, and financially beneficial alternative to standard concrete construction used
alternatives for the market segments considered.
LOW ENVIRONMENTAL IMPACT
PANEL CONFIGURATION
The basis for the cutting is formed by the cutting plans of the client (AKA: Formatting). Factory cutting of panels takes place using state-of-the-art CNC technology. Upon request, and with appropriate equipment, the panels can also be cut by the relevant construction company. The size and thickness specific to the need of the project. A typical panel is 8 feet wide and 12 feet long. But, are available in widths up to 14 feet and lengths of 50 feet with depth ranging from 3 to 12 inches. Window openings and routing
precise dimensions.
PANEL ASSEMBLY
Panels arrive at the site pre-cut, equipped with a lifting harness, and ready for immediate
sequence of construction.
PANEL ASSEMBLY
OPEN ACADEMY, NORWICH Sheppard Robson, London
is one-third the weight of typical concrete and steel structures.
foundation.
FIRE RESISTANCE
In a fire, a solid wall of timber will benefit from protection of a charred layer and therefore does not deteriorate in the same way as a stud
Depending on the thickness of the panel, fire protection classification of ½ to 1 hour are available without the use
Through layered construction using fire treated gypsum wall board, greater fire resistance can be achieved. Being CLT panels are solid, there are no openings for fire to transverse once the finish material resistance fails. The burn rate of a bare timber panel is less than 7 mm per minute. A timber beam will retain structural integrity longer than a steel beam, which loses strength above certain temperature and buckles.
SEISMIC RESISTANCE: SPECIAL CONSIDERATION:
A seven story mock-up building has been erected and tested in a Japanese laboratory, subjecting it to a simulated 7.2 magnitude earthquake. Only minor damage occurred. To see a video of this test, go to YouTube.com and search for Kobe Earthquake Test. After the seismic test, this building was dismantled, shipped back to the owner, and reassembled for use as student
practical Sustainable Building System.
Formaldehyde and acetaldehyde free adhesives. No Off-Gas of Volatile Organic Compounds (VOC’s). Recent testing of VOC’s, based on standard ASTM D 5116-97 for measuring such emissions, shows CLT having a range of .005 to .02 ppb of toxic emissions. CARB (California Government Standards), Phase 2 will be fully enforced by July 2012. It establishes the most stringent limit for emissions set at 50 ppb.
ENVIRONMENT:
NORTHBURY SCHOOL Greenhill Jenner Architectures, London
COLLEGES
FALMOUTH COLLEGE Urban Salon Architecture, London Winner of International Green Apple Award, Built Environment; RISA Award for Architecture; LABC South West; Timber in Construction Award; Best Education Project at Off Site Construction Awards.
DAY CARE
THOMAS’ SCHOOL Claridge Architects, London
OFFICES
RESIDENCES
RESIDENCES
Hillside Construction Austria
APARTMENTS
RESTAURANT
Waugh Thistleton Architects & Techniker Engineers
The Stadthaus 24 Murray Grove, London
affordable housing, The Stadthaus provides twenty nine apartments, ten of them being affordable units.
was assembled in 27 working days by a four man crew using powered hand tools and a mobile crane.
Photography by Will Pryce
natural life and continues to store that carbon when cut. The fabric of The Stadthaus tower stores over 300 tons
entire eight floors of timber panel framing was only ¾ of one inch.
5,000 painted wood fiber panels, and are referred to as a rain shield.
Concrete Frame Pedestal Base
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
First Floor - Start timber panel construction of shaft core
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Second Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Waugh Thistleton Architects & Techniker Engineers
Photography by Will Pryce
Third Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Fourth Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Fifth Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Sixth Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Waugh Thistleton Architects & Techniker Engineers
Photography by Will Pryce
Seventh Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Eighth Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Ninth Floor of timber panel construction
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Interiors The Stadthaus 24 Murray Grove, London
Waugh Thistleton Architects & Techniker Engineers
Photography by Will Pryce
Completed Construction
The Stadthaus 24 Murray Grove, London
Photography by Will Pryce
Waugh Thistleton Architects & Techniker Engineers
Interiors The Stadthaus 24 Murray Grove, London
Waugh Thistleton Architects & Techniker Engineers
Photography by Will Pryce
FIRE RESISTANCE
benefit from the protection of a charred layer and therefore does not deteriorate in the same way as a stud or joist.
panel, fire protection classification of ½ to 1 hour are available without the use of any fire resistant covering. Through layered construction using fire treated gypsum wall board, greater fire resistance can be achieved.
are no openings for fire to transverse
fails.
panel is less than 7 mm per minute.
integrity longer than a steel beam, which loses strength above certain temperature and buckles.
SEISMIC RESISTANCE:
been erected and tested in a Japanese laboratory, subjecting it to a simulated 7.2 magnitude earthquake. Only minor damage occurred.
see video
test go to Youtube.com and search for Kobe Earthquake Test.
SPECIAL CONSIDERATION:
was dismantled, shipped back to the
student housing. Just another example of a practical Sustainable Building System.
INDOOR ENVIRONMENT
free adhesives. No Off-Gas of Volatile Organic Compounds (VOCs).
standard ASTM D 5116-97 for measuring such emissions, shows CLT having a range of .005 to .02 ppb of toxic emissions.
(California Government Standards), Phase 2 will be fully enforced by July of 2012. It establishes the most stringent limit for emissions set at 50 ppb.
RESEARCH: USE OF SOUTHERN YELLOW PINE FOR CLT
CLT @ NCSU
CLT RESEARCH Phil Mitchell, PhD Forestry and CLT liaison at NCSU
RESEARCH: USE OF HARDWOODS FOR CLT
RESEARCH: USE OF CLT IN TORNADO RESISTANT STRUCTURES
TORNADO RESISTANCE:
Research from the University of Technology located in Graz, Germany validates the application
shelter construction
A Center for training personnel in the manufacture and construction techniques of CLT
Jonathan Snover, PhD - CLT Training Director Vernon Daugherty - Training Director
APA – ANSI Mfg. Standards 100% document approval 2011 International Code Council - ICC CLT to have classification in Building Code 2015 edition
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
Myers Memorial Bell Tower MDS10 Architects Asheville, NC
MEDLOCK & ASSOCIATES ENGINEERING, PA Frank Ungert and Ed Medlock National Woodworks Wood Engineering Award 2011 Project: Myers Memorial Bell Tower in Gastonia, North Carolina
CLT - A Revolution in Building Technology