Portal Frame Construction3/19/2021
Please help improve this article by adding citations to reliable sources.Find sources: Portal frame news newspapers books scholar JSTOR ( November 2013 ) ( Learn how and when to remove this template message ).Portal frame structures can be constructed using a variety of materials and methods.These include steel, reinforced concrete and laminated timber such as glulam.
The connections between the columns and the rafters are designed to be moment -resistant, i.e. They were first developed in the 1960s, and have now become the most common form of enclosure for spans of 20 to 60 m 2. This means that the size of the rafters can be reduced or the span can be increased for the same size rafters. This makes portal frames a very efficient construction technique to use for wide span buildings. A typical configuration might be where there is office space built against one wall of a warehouse. For assembly halls, portals with R.C slab roof cast monolithically is used. Additionally, it has been shown that in high snow regions, the difference between the methods is more dramatic. If the foundation cannot resist horizontal push, outward movement will occur and the frame will lose strength. Comparison of LRFD and ASD for Pre-Fabricated Gable Frame Design. Pre-Fabricated Gable Frame Design in High Snow Regions-Comparison of LRFD and ASD. AJER 9.6 (2020): 160-168. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.
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