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Glossary |
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Contacts: Andrew J Crabb & James Fraser-Harris Widcombe Farm, Culmhead, Taunton, Somerset, TA3 7DX. Home: 01823 421 395 Mobile: 07971817092 Email us on: james.fh@btinternet.com |
Braces:
Draw-pegging:
Green Oak:
Jowl-posts:
King-post:
Mortise:
Principals:
Purlin:
Queen-posts:
Tenon:
Tie-beam:
Topping-out:
Truss:
Wall-plate:
Wind-bracing: |
Short, curved pieces of timber that are jointed between the upright jowl-post and both the wall-plate and the tie-beam.
The holes drilled through the mortise and tenon joints are slightly misaligned to draw the joint tighter on assembly.
Fresh-sawn oak.
The upright posts on which the whole frame rests.
A central, vertical post connecting the centre of the tie-beam to the apex of the truss.
The 'female' part of a mortise and tenon joint. It is a slot into which the 'male' tenon fits.
The inclined timbers that run from either end of the tie-beam to the apex of the roof. They are jointed into the tie-beam, purlins, wind-bracing and queen-(or king)-posts.
Purlins are horizontal timbers that connect the trusses and together with the wind-bracing stop the roof from collapsing like dominoes. They are jointed into the principals.
Small, curved timbers that connect the principals with the tie beam across the bottom corners of the triangular truss.
(see mortise)
Hefty horizontal beams that run across the structure, resting on the wall-plate and subsequently the jowl-posts at either end. They form the base of the triangular truss. They are jointed into the principals and queen-(or king)-posts.
A sprig of Oak is attached to the top of the structure as a way of thanking the Oak trees for the wood used to build the frame.
The triangular structure consisting of tie-beam, queen-posts (or king-post) and principals.
Horizontal beam that runs along the structure resting on the jowl posts and supporting the tie-beams.
Longer, but thinner curved timbers than normal braces. They are jointed into the principals and the purlins. |
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