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The hip or valley rafter also connects the ridge to the plate, but lies at a 45-degree angle to the common rafter. This number gives the length of the hip or valley rafter per seventeen units of run. Difference in lengths jacks. The jack rafters lie in the same plane as the common rafter but connect the top plate (the wall) or ridge board to ...
Hip/Val indicates the rise in inches over a 17 inch run for hip or valley rafters from 1 inch to 30 inch. Some models have divots for fitting a writing utensil to mark lumber with. Speed squares made by the Swanson Tool Company also have a diamond shape cutout on the ruler side at 3½ inches.
East Asian hip-and-gable roof; Mokoshi: A Japanese decorative pent roof; Pavilion roof : A low-pitched roof hipped equally on all sides and centered over a square or regular polygonal floor plan. [10] The sloping sides rise to a peak. For steep tower roof variants use Pyramid roof. Pyramid roof: A steep hip roof on a square building.
Compass rafter: A rafter curved or bowed on the top (the top surface of a rafter is called its "back") or both the top and bottom surfaces. Curb rafter: The upper rafters in a curb (kerb, gambrel, Mansard roof) roof. Hip rafter (angle rafter): The rafter in the corners of a hip roof. The foot of a hip rafter lands on a dragon beam.
Key:1: ridge beam, 2: purlins, 3: common rafters. 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.
Pages in category "Construction and civil engineering companies of the United States" The following 200 pages are in this category, out of approximately 267 total. This list may not reflect recent changes .
By supporting the rafters they allow longer spans than the rafters alone could span, thus allowing a wider building. Purlin plates are very commonly found in large old barns in North America. A crown plate has similarities to a purlin plate but supports collar beams in the middle of a timber-framed building.
The company moved to Everett in 1893 and to Seattle in 1929. [1] In the early 1960s, Howard S. Wright (HSW) was selected as the primary builder for the Century 21 Exposition in Seattle. It was for this event that the company built the Space Needle - now a world landmark.