We have put together probably one of the most comprehensive pole building glossaries found on the internet today. And if you are like most people, if you can't see it, you still don't understand it very well.

If there is any pole building term you still don't understand, or one not yet listed here, please use the Contact Us page to email us. We will be glad to send drawings or pictures for illustration.

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T
T Bracing:	Two pieces of lumber nailed together to form a "T". Frequently used as permanent roof truss bottom chord bracing and to support endwall wind columns when roof trusses are spaced greater than 10' on center.
Tensile Strength:	The longitudinal pulling stress a material can bear without tearing apart.
Threaded Nail:	A type of nail with either annual or helical threads in the shank. Generally made from hardened steel and have smaller diameters than common nails of similar length.
Timber:	Wood members five or more nominal inches in the least direction.
Top Chord:	An inclined or horizontal member establishing the top of a truss.
Transit (or Building Level):	A surveyor's instrument in which a telescope is mounted horizontally. Parallel to the ground, it can be used to determine a level point or points.
Transverse:	The direction perpendicular to the ridge.
Tributary Area:	The area which contributes load to a specific structural component.
Trim (or Flashing):	Light gauge metal used to cover exposed edges of steel claddings, especially around openings and at intersection of surfaces, or bare untreated lumber. Generally includes: base, eave, jambs, around windows and doors, fascia, varges and ridge.
Twist:	A curl or spiral of a piece of lumber along its length. Measured by laying lumber on a flat surface so three corners contact the surface. The amount of twist is equal to the distance between the flat surface and the corner not contacting the surface.