Timber Framers Guild

This covered bridge near Guelph, Ontario, Canada was a Guild project

The Timber Framers Guild (the Guild) is a non-profit, international, membership organization established in 1984 in the United States to improve the quality and education of people practicing the centuries-old art of Timber framing buildings with timbers joined with primarily wooden joints. Today the stated goals of the Guild are to provide "... national and regional conferences, sponsoring projects and workshops, and publishing a monthly newsletter, Scantlings, and a quarterly journal, Timber Framing "^[1] The Guild is not like medieval guilds in that the emphasis is on education rather than control of this traditional trade. Similar organizations are the Carpenters Fellowship in the U. K., Compagnons du Tour de France in France, and Zimmerman in Germany (a German language site). The Guild is not directly associated with the United Brotherhood of Carpenters and Joiners of America. Originally the Guild was named the Timber Framers Guild of North America but the "North America" was dropped in recognition of the Guild's international presence.

Membership

Membership in the Guild does not necessarily reflect competency but an interest in learning and/or teaching. Membership is not required to practice timber framing. Most members build new timber frames, but many members restore, rehabilitate, preserve and/or study historic timber framed buildings. The philosophies vary widely with some members being innovative and designing buildings of the future, some use computer-controlled machinery to cut frames, some work only with traditional hand-powered tools. Some members use metal connectors rather than traditional wooden joinery.

Sub-groups within or associated with the Guild

Traditional Timberframe Research and Advisory Group (TTRAG): Part of the Timber Framers Guild officially formed in 1990 to 1) To save and/or survey old or unique traditionally timber-framed buildings; 2) To develop a survey form and checklist prototype to be used by Guild members and others in cataloging old buildings, 3) To contact appropriate related groups to make them aware of our existence and services, 4) To develop methods and systems to examine the evolution of timber framing, e.g., transition of scribe rule to square rule in North America, 5) To develop a shared archive, 6) To create appropriate restoration policies and practices, 7) To promote the use of traditional materials and joinery in timber framing, 8) To pursue funding from all sources to achieve the aforementioned goals and practices.

The TTRAG group produced survey guidelines for recording historic timber framed buildings.

"The Timber Frame Engineering Council (TFEC) formed in 2005 at a Guild conference in recognition of the considerable number of structural engineers among the Guild membership and in response to a felt need for systematic research, discussion and codification of timber frame joinery and structural practices."^[2]

The TFEC has developed a Standard for the Design of Timber Framed Structures as a "...supplement to provisions of the National Design Specification for Wood Construction..."^[3] to assist engineers in this design specialty.

Timber Frame Business Council: A non-profit organization focused on the business of timber framing.

Conferences

The Guild holds an eastern conference, western conference and TTRAG conference annually. Regional meetings, workshops and projects occur irregularly. For a list of past projects since 1988 see here.

Apprenticeship Program

The Guild has created a training program for apprentices to learn the art and science of traditional timber framing from mentors called journeyworkers. "Successful apprentices receive a nationally recognized credential registered by the United States Department of Labor under our program number NO152090893.^[4] This program uses a formal curriculum which is still under development as of 2012.

Publications

The Guild publishes a newsletter for members, a respected journal Timber Framing, and books on the specialized topics of traditional timber framing. The Guild also lists other relevant books, software and a Glossary of timber framing terms. An important record of historic timber frame joints found in the U.S.A. is Historic American Timber Joinery: A Graphic Guide which was partially funded by a grant from National Park Service and the National Center for Preservation Technology and Training and thus are available for free download.^[5] This guide is expanding as new types of joints are found and recorded.

Forum

An online, public forum is managed for anyone to search for past discussions or ask questions.^[6]

References

External links

Woodworking

Overviews

Forms

Woods

Soft	Cedar (Calocedrus, Cedrus) Cypress Douglas fir Fir Juniper Larch Pine Spruce Yew

Hard	Ash Alder Aspen Balsa Beech Birch Cherry Chestnut Cocobolo Ebony Elm Hazel Lignum vitae Linden (lime, basswood) Mahogany Maple Oak Padauk Plum Poplar Teak Totara Walnut Willow

Tools

Abrasives Axe Adze Chisel Clamp Drawknife Drill Float Mallet Milling machine Mitre box Moulding plane Plane Rasp Router Sandpaper Spokeshave Timber-framing Vise Winding sticks Wood scribe Workbench

Saws	Backsaw Bandsaw Bow Bucksaw Chainsaw Circular Compass Coping Crosscut Frame Fretsaw Jigsaw Keyhole Miter Rip Scroll Veneer Whipsaw

Geometry

Joints	Birdsmouth Bridle Butt Butterfly Coping Crown of thorns Dados Dovetail Finger Groove Halved Hammer-headed tenon Knee Lap Mason's mitre Miter Mortise and tenon Rabbet/Rebate Scarf Splice Tongue and groove

Profiles	Bead Bevel Chamfer Molding Ogee Ogive

Treatments

Organizations

Conversion

Techniques

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