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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
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.
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
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.
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
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
Mass Timber Products
American National Standard– Defines CLT– Component
requirements– Performance criteria– Qualification– Quality assurance– Terminology
CLT Production Considerations• Lumber Considerations
– Species– Grade– Dimension– Moisture content
• Adhesives• Manufacturing
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
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)
Photo Credit: D. R. Johnson
Photo Credit: D. R. Johnson
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.
What about other species?
• PRG 320 lays out the path• Hardwood structural lumber
– Previous and current research• Non-building markets
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
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
Non-building markets
• Industrial matting– Pipeline– Access mats– Crane
• Maritime decks• Portable bridge
decks
Photo Credit: Smartlam
North American CLT/NLT Manufacturing
Canada• Nordic Structures (Quebec)• StructureCraft (BC)• Structurlam (BC)United States• DR Johnson (OR)• Smartlam (MT) • Sterling (IL) – industrial
Image Courtesy Lech Muszyński
Image Courtesy Lech Muszyński
MASS TIMBER PROJECT EXAMPLES
Loading Dock / Oz ArchitectureBoulder, CO
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
Thank you!