![]() Portal frames can be clad with various materials. ![]() A typical configuration might be where there is office space built against one wall of a warehouse. Generally portal frames are used for single-story buildings but they can be used for low-rise buildings with several floors where they can be economic if the floors do not span right across the building (in these circumstances a skeleton frame, with internal columns, would be a more economic choice). Portal frame construction is therefore typically seen in warehouses, barns and other places where large, open spaces are required at low cost and a pitched roof is acceptable. This makes portal frames a very efficient construction technique to use for wide span buildings. This means that the size of the rafters can be reduced or the span can be increased for the same size rafters. īecause of these very strong and rigid joints, some of the bending moment in the rafters is transferred to the columns. First developed in the 1960s, they have become the most common form of enclosure for spans of 20 to 60 meters. These include steel, reinforced concrete and laminated timber such as glulam. Portal frame structures can be constructed using a variety of materials and methods. The result is wide spans and open floors. Portal frame is a construction technique where vertical supports are connected to horizontal beams or trusses via fixed joints with designed-in moment-resisting capacity. JSTOR ( November 2013) ( Learn how and when to remove this template message)Ī portal frame steel building under construction.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |