Mass Timber Brashaw - MiFBI
Transcript of Mass Timber Brashaw - MiFBI
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RESOURCE AND SUPPLY CHAIN CONSIDERATIONS FOR MASS TIMBER
Brian Brashaw, Program ManagerForest Products Marketing UnitUSDA Forest Service
Photo Credit: D. R. Johnson
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My Forest Products Story…
As a youth growing up in the Nicolet National Forest (Wisconsin), I understood the connection between the forest and Connor Forest Products where my Dad worked. Despite moving from Laona in 5th grade, I accomplished my youth goal of being a forester with a career in forest products. After 25 years as a wood specialist in Minnesota, I joined the Forest Service’s FPL in 2015 to fulfill a career goal and work to strengthen the connection between our forests, research, and markets. I am proud to work alongside my Forest Service colleagues and partners to support resilient forests and communities.
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USDA Forest ServiceForest Products Laboratory
Established 1910 150 Permanent Employees (50
Scientists) FY16 Federal Funding $26.6
million 150 Cooperative R&D agreements Program Leverage $4 - $5 million
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PULP WOODBIOMASS SAW LOGS
LUMBER
POWER
VALU
E
MILL RESIDUE
PARTICLEBOARD
MDFOSB
PARALLAM
VENEER LOGS
CONSTRUCTION PLYWOODHARDWOOD PLYWOOD
LVL
I-JOIST
GLULAM
COMPOSITE LUMBERCHEMICALS
& POLYMERS
ETHANOL/BUTANOL/PYROLYSIS OIL
NANO-CELLULOSE
FUEL PELLET
VALUE
PACKAGINGPULP & PAPER
BIOCHAR
CROSS LAMINATED TIMBER
A key element in maintaining healthy, resilient forests is our ability to provide value-added products from the full complement of forest biomass.
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FOREST PRODUCTS MARKETING UNIT
FPMU
Forest Service S&PF-Coop
Forestry National Forest System
State Forestry
Utilization and
Marketing Partners
Wood Products Extension
and University PartnersPublic-
Private Partnerships
Forest Products Industry
Tribal Partners
Forest Service
Research
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Mass Timber Strategy Education
• WoodWorks• Mass Timber Conference• Softwood Lumber Board• Media
Technical Assistance
• WoodWorks• Forest Products
Marketing Unit (FPL)• Regional Biomass
Coordinators
Research• Forest Products
Laboratory (FPL) and University and other Research Partners
Initiatives
• U.S. Tall Wood Building Competition
• National Building Museum• Film with Choose
Outdoors• Wood Innovation Grants• Cooperative Agreements
Agency Lead: Washington Office -Cooperative Forestry
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Mass Timber Products
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American National Standard– Defines CLT– Component
requirements– Performance criteria– Qualification– Quality assurance– Terminology
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CLT Production Considerations• Lumber Considerations
– Species– Grade– Dimension– Moisture content
• Adhesives• Manufacturing
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CLT Lumber (Per PRG 320-2012)
• Machine Stress Rated or Visually Graded Dimensional Lumber – Douglas-fir, southern yellow pine, SPF,
SPFsouth
– Parallel layers: #2 or better (visual grading) or MSR 1200f or better (machine grading)
– Perpendicular layers: #3 or better– Specific gravity > 0.35
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CLT (Per PRG 320-2012)
• Thickness not less than 5/8” or greater than 2”– 2 by 4, 6, 8, 10 common in North America
• Dried to 12% moisture content before layup• Glulam adhesive standard (AITC 405)
– Phenol-resorcinol formaldehyde (PRF), Emulsion polymer isocyanate (EPI), One-component polyurethane (PUR)
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Photo Credit: D. R. Johnson
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Photo Credit: D. R. Johnson
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Nail Laminated Timber• NLT is created from dimensional lumber
stacked on edge - 2x4, 2x6, 2x8, 2x10, or 2x12 at 1-1/2" on center - and fastened together with nails.
• NLT is sanctioned by building codes and qualifies as Heavy Timber.
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What about other species?
• PRG 320 lays out the path• Hardwood structural lumber
– Previous and current research• Non-building markets
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Cooperative effort by Michigan Tech, USDA Forest Service, University of Minnesota Duluth, Northern Hardwoods
Fundamental properties
Manufacturing--sorting, grading and properties of hardwood industrial materials (logs, veneer, lumber)
Engineered products -trusses, I-joists, laminated veneer lumber, glulam
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Development of CLT panels using low-value, low-quality hardwoods (e.g., Red Maple, Yellow-poplar, Beech, etc.)
WVU: Developing Low-Grade Hardwood CLTs
Full Length Panels
Production of 10-foot Panels
WVU HRT and USDA WERC Grant Project
Dr. David DeVallance
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Non-building markets
• Industrial matting– Pipeline– Access mats– Crane
• Maritime decks• Portable bridge
decks
Photo Credit: Smartlam
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North American CLT/NLT Manufacturing
Canada• Nordic Structures (Quebec)• StructureCraft (BC)• Structurlam (BC)United States• DR Johnson (OR)• Smartlam (MT) • Sterling (IL) – industrial
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Image Courtesy Lech Muszyński
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Image Courtesy Lech Muszyński
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MASS TIMBER PROJECT EXAMPLES
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Loading Dock / Oz ArchitectureBoulder, CO
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Changing the Way America Builds!
• Mass Timber building is being embraced in the commercial sector– Expanding CLT manufacturing capacity – Surge of initial projects
• PRG 320 highlights lumber specifications and CLT grades
• Softwood supply chain important• Need to develop the full supply chain from forest
to frame – gaps exist
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Thank you!