FPL 2021 Wood Handbook Easily Accessed

All chapters of the Forest Products Laboratory’s 2021 Wood Handbook are available online. You can choose specific chapters from the handbook to view here.

Wood handbook: Wood as an engineering material 

Chapter 1 Wood as a renewable and sustainable resource Brashaw, Brian; Bergman, Richard

Keywords: wood; forestry; forest certification; carbon; LCA; stocks; sustainability; healthy forests; construction; buildings

File size: 2 MB

Chapter 2 Characteristics and availability of commercially important woods Wiemann, Michael

Keywords: Wood anatomy; wood identification; species descriptions; species uses

File size: 25.6 MB

Chapter 3 Structure and function of wood Wiedenhoeft, Alex; Eberhardt, Thomas

Keywords: wood biology; wood chemistry; wood anatomy; wood identification

File size: 8 MB

Chapter 4 Moisture relations and physical properties of wood Glass, Samuel; Zelinka, Samuel

Keywords: wood; moisture; water; water vapor; sorption; adsorption; absorption; moisture content; fiber saturation point; physical properties; density; specific gravity; dimensional stability; shrinkage; swelling; thermal properties; thermal conductivity; heat capacity; electrical properties

File size: 2 MB

Chapter 5 Mechanical properties of wood Senalik, Christopher Adam; Farber, Benjamin

Keywords: mechanical properties; wood; tension; compression; shear; bending; hardness; moisture; hardwoods; softwoods

File size: 5 MB

Chapter 6 Commercial lumber, round timbers, and ties Senalik, Christopher Adam; Farber, Benjamin

Keywords: lumber; grades; dimensions; grading agencies; poles; piles; ties; finished market products

File size: 2 MB

Chapter 7 Stress grades and design properties for lumber, round timber, and ties Senalik, Christopher Adam; Farber, Benjamin

Keywords: lumber grading; size adjustment; moisture adjustment

File size: 1 MB

Chapter 8 Fastenings Rammer, Douglas

Keywords: fastenings; nails; spikes; staples; bolts; screws; withdrawal resistance; metal plate connectors

File size: 4 MB

Chapter 9 Structural analysis equations Lo Ricco, Marco; Amini, Mohamed Omar; Rammer, Douglas

Keywords: structural analysis; wood beams; columns; built-up sections

File size: 3 MB

Chapter 10  Wood adhesives: bond formation and performance Frihart, Charles; Hunt, Christopher

Keywords: wood bonding; wood adhesives

File size: 2 MB

Chapter 11 Wood-based composite materials: panel products, glued laminated timber, structural composite lumber, and wood–nonwood composites Stark, Nicole; Cai, Zhiyong

Keywords: wood composites; cellulose nanocomposites; composite lumber; manufacturing; identification

File size: 5 MB

Chapter 12 Mechanical properties of wood-based composite materials Cai, Zhiyong; Senalik, Christopher Adam; Ross, Robert

Keywords: Wood-based; composite; mechanical properties; structural panel; industrial panel; structural lumber

File size: 423 KB

Chapter 13 Drying and control of moisture content and dimensional changes Bergman, Richard

Keywords: wood drying; wood stain; drying methods; moisture control; determination; wood defects; shrinkage; humidity; EMC; equilibrium moisture content

File size: 3 MB

Chapter 14 Biodeterioration of wood Arango, Rachel; Lebow, Stan; Glaeser, Jessie A.

Keywords: Fungi; insects; mold; bacteria; marine borers

File size: 6 MB

Chapter 15 Wood preservatives Kirker, Grant T.; Lebow, Stan

Keywords: Wood preservation; pressure treatment; disposal; usage guidelines

File size: 2 MB

Chapter 16 Finishing wood Hunt, Christopher

Keywords: finishes; wood; coatings

File size: 14 MB

Chapter 17 Use of wood in buildings and bridges Wacker, James

Keywords: wood; bridge; building; structural; thermal; moisture; sound

File size: 4 MB

Chapter 18 Fire safety of wood construction Dietenberger, Mark; Hasburgh, Laura, E..; Yedinak, Kara

Keywords: Fire performance; wood; char; ignition; flame spread; wildland urban interface; home ignition zone; flammability

File size: 1 MB

Chapter 19 Specialty treatments Ibach, Rebecca

Keywords: Plasticizing wood; wood modification; laminates

File size: 744 KB

Chapter 20 Heat sterilization of wood Wang, Xiping

Keywords: heat treatment; heating times; invasive species; pest; lumber; timber; treatment schedule

File size: 1 MB

Turning Up the Heat: Fires Test Performance of Tall Wood Buildings

Wood buildings provide an array of economic and environmental benefits. Interest in capitalizing on those benefits by constructing mid- to high-rise buildings using cross-laminated timber (CLT) is growing. CLT is made from layers of dried lumber boards stacked in alternating direction at 90-degree angles, glued and pressed to form solid panels. These panels have exceptional strength and stability and can be used as walls, roofs, and floors. Additionally, calculations have shown that a seven-inch floor made of CLT has a fire resistance of two hours.

In order for wood structures to rise above six stories without special building official permission, changes to the International Building Code are needed. It’s a tall order, but researchers from the Forest Service’s Forest Products Laboratory (FPL) recently completed a series of fire tests that will address concerns about fire performance of wood buildings and help take them to new heights. Continue reading