N1600 per square meters for the thickness of 0.45mm gauge, while N2000

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5 Long Span Structures with Awesome Roofs

Long span roofs are generally defined as those that exceed 12 m in span. Long span roofs can create flexible, column-free internal spaces and can reduce substructure costs and construction times. Long-span roofs are often associated with iconic projects, be they stadia, airports or other major public buildings. For us as building designers they are often quite unique in the level of integration and honest expression of their architecture and engineering, from the visual drama to the creation of adaptable, multi-functional structures. Long span roofs are also referred to as roofs that exceed a 12 m span. Long span roofs can produce resilient, column-free interior areas. They can also decrease substructure expenses and production times. Long span roofs are usually observed in a broad variety of building varieties such as: Manufacturing plants Warehouses Agricultural structures Generic roof image The roof is essential to any building: it separates the occupants below from the elements above dealing with all weather conditions. A good roof will last more than a lifetime and a bad roof can fail within weeks on being installed.

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Articles In Depth Top Articles 5 Long Span Structures with Awesome Roofs Architects sometimes feel restricted when designing spaces with long-span structures. Generally, the maximum span for beams in building construction depends on the beams' material compositions along with their vertical and horizontal thicknesses. Construction - Prefabrication, Steel, Concrete: Long-span buildings create unobstructed, column-free spaces greater than 30 metres (100 feet) for a variety of functions. These include activities where visibility is important for large audiences (auditoriums and covered stadiums), where flexibility is important (exhibition halls and certain types of manufacturing facility), and where large. The measurement of a long span roof is at least 12 meters long (the standard length according to PNS 67), which is longer than regular roofs. Some believe 14 feet to be typical. However, anything longer than 14 feet is considered a big spread. The long span minimum length for on-site roll forming might be 12 meters. The span of a roof is an important consideration, among other factors, including functional requirements and considerations of speed and economy of assembly. This can be classified in relative terms as short (up to 7.5 m), medium (7.5 m - 25 m) and long (more than 25 m) according to (Foster and Greeno 200.

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Nature Long-Span. By. Lawrence G. Griffi s, P.E. The design and construction of long-span roof structures requires a blend of skills from the structural engineer not normally required in more normal building types. Forces come into play, including material shrinkage, support settlement, temperature effects and sequence of erection, that can. weight of the floor or roof system are all factored in. Architectural appeal drives the design of such structures, but many factors working simultane-ously and in varying degrees must be analyzed in long-span design. The challenge in developing a long-span design is to integrate the architectural concept and appeal with the most efficient. Long, clear, unobstructed spans are the inspiration behind Wideck® long span roof and floor deck ceiling systems. These architectural roof deck ceiling systems efficiently clear span from 10 to an impressive 58 feet. This creates a visually open building envelope with the structural framing system. For a long span roof utilizing multiple seamed pan lengths, transverse seams are required. For roof slopes less than 6" on 12", the upper roof pan is attached to a locking strip soldered to the lower pan. The lower pan is cleated to the roof deck with the indicated clearances determined by expansion calculations. See Example Table 8.8A.

5 Long Span Structures with Awesome Roofs

20 examples of buildings with impressive spans. Long span Lightweight Reduced deflection (compared to plain members) Opportunity to support considerable loads. The penalty, however, is increased fabrication costs . The article describes alternative forms of truss, where and why different forms might be appropriate and introduces design considerations.