In a steel structure, a pur strip usually refers to a roof purlin that is parallel to the eaves and supports the roof or board. The rafters are supported by rafters or walls. Pur are most commonly used in metal building systems, where z-shaped use allows for a curved continuity between the two.
Steel structure industry practice is to structure the name of the representative shape distribution, to facilitate a simplified description of drawings and documents: channel part, with or without flange stiffener, commonly referred to as C shape; The passage of the unflanged reinforcement is also known as the u-shape; The symmetrical part of a point similar to the Z shape is known as the Z shape. The departmental designation can be regional or even specific to the manufacturer. In steel structures, secondary components such as pur (eaves) and walls (walls) are usually cold-formed steel C, Z or U (or rolling) C parts.
Compared with the rolling part of the secondary component, the cold forming parts can be based on weight. In addition, the Z part can be nested for transport bundling, and on the building, it can be mounted on supporting parts to develop a continuous beam that is effective across multiple supporting parts.
In European English, a wooden building called "arcade" is called "arcade", "in purlin" and "principal purlin". "Plate" refers to a major, horizontal, supported wood. The roof Purlin plate is a beam that supports the mid-rafters, supported by the pillars. By supporting the rafters, they allow a longer span than a separate rafter, thus allowing a wider building. Purlin plates are common in big barns in North America. A crown dish has a similarity to a purlin plate, but it supports a collar in the middle of a wooden building.