Search results
Results from the WOW.Com Content Network
The plumb cut fits in the ridge board and the Bird's mouth fits on the wall plate. Common rafter per foot of run. The common rafter connects the peak of a roof (the ridge) to the base of a roof (the plate). This number gives the length of the common rafter per twelve units of horizontal distance (run). Hip or valley rafter per foot of run.
Historically, roof pitch was designated in two other ways: A ratio of the ridge height to the width of the building (span) [6] and as a ratio of the rafter length to the width of the building. [7] Commonly used roof pitches were given names such as: Greek: the ridge height is 1 ⁄ 9 to 1 ⁄ 7 the span (an angle of 12.5° to 16°);
Hip rafter (angle rafter): The rafter in the corners of a hip roof. The foot of a hip rafter lands on a dragon beam. King rafter: the longest rafter on the side of a hip roof in line with the ridge. Valley rafter (historically also called a sleeper): A rafter forming a valley (look for illustration showing a valley). Intermediate rafter: "one ...
A single, central post in a roof truss in tension between the rafters and a tie beam (bottom chord), or 2) (U.S.) A short of the tie beam only supporting the rafters via struts. 3) (U.K.) A king post specifically carries a ridge beam otherwise is called a king strut. "King post" was formerly used to describe a crown post in the U. K., but no ...
Concrete cover, in reinforced concrete, is the least distance between the surface of embedded reinforcement and the outer surface of the concrete (ACI 130). The concrete cover depth can be measured with a cover meter. The purpose of concrete cover is to protect the reinforcement from corrosion, fire, and other potential damage.
In the UK, a concrete tiled roof would normally have rafters at 600 mm (24 in) centers, roof battens at 300 mm (12 in) centers and ceiling joists at 400 mm (16 in) centers. The United States still uses imperial units of measurement and framing members are typically spaced sixteen or twenty-four inches apart.
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.
The first expanded polystyrene ICF Wall forms were developed in the late 1960s with the expiration of the original patent and the advent of modern foam plastics by BASF. [citation needed] Canadian contractor Werner Gregori filed the first patent for a foam concrete form in 1966 with a block "measuring 16 inches high by 48 inches long with a tongue-and-groove interlock, metal ties, and a waffle ...