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A full cruck does not need a tie beam. Base cruck: tops of the blades are truncated by the first transverse member such as by a tie beam. Raised cruck: blades land on masonry wall, and extend to the ridge. Middle cruck: blades land on masonry wall, and are truncated by a collar. Upper cruck: blades land on a tie beam, similar to knee rafters.
Cruck. A cruck or crook frame is a curved timber, one of a pair, which support the roof of a building, historically used in England and Wales. This type of timber framing consists of long, generally naturally curved, timber members that lean inwards and form the ridge of the roof. These posts are then generally secured by a horizontal beam ...
Blade – A specific name for the post-like timber in cruck framing. Cruck stud – The upright stud or post forming a wall, mounted on a cruck blade and held by a cruck spur. Pile, piling – A post driven or set into the ground such as in earthfast, post in ground, or "posthole construction". [16]
This is an example of a "double roof" with principal rafters and common rafters. A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof. Trusses usually occur at regular intervals, linked by longitudinal timbers such as purlins. The space between each truss is known ...
The king post is the central, vertical member of the truss. Crown posts in the nave roof at Old Romney church, Kent, England. A king post (or king-post or kingpost) is a central vertical post used in architectural or bridge designs, working in tension to support a beam below from a truss apex above (whereas a crown post, though visually similar, supports items above from the beam below).
trimmer or jack − stud to the left or right of a window or door that runs from the bottom plate to the underside of a lintel or header; cripple stud – a stud located either above or below a framed opening, that does not run the full height of the wall; post or column − a doubled or other integral multiple of a group of studs nailed side ...
Coyau or sprocket. Labeled A. A rafter is one of a series of sloped structural members such as steel beams that extend from the ridge or hip to the wall plate, downslope perimeter or eave, and that are designed to support the roof shingles, roof deck, roof covering and its associated loads. [2] A pair of rafters is called a couple.
A truss is an assembly of members such as beams, connected by nodes, that creates a rigid structure. [1] In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". [2] A "two-force member" is a structural component where force is ...