# Portal method and cantilever method pdf

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## analogy of a cantilever - Structural engineering general discussion - Eng-Tips

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Show full item record. Varshney, Jay Kumar. Sunil Kumar. Comparison of approximate methods of lateral load analysis for buildings.
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Published 21.04.2019

## KrishiKosh (कृषिकोश)

Yes its simple portal frame. RE: analogy of a cantilever OldPaperMaker- The cantilever method is very similar to the portal method? In this work five such frames have been analysed using these methods. From Wikipedia, the free encyclopedia.

March 17. Comparison of approximate methods of lateral load analysis for buildings? Read more. In high rise building, where height is several times greater than its lateral dimensions.

Items in DSpace are protected by copyright, unless otherwise indicated! Log In. Already a Member. Vertical Loads on Building Frames.

This problem can be overcome by using fast and efficient methods which yield results which are approximate and acceptable. The information on this website, or example problems may not be copied or reproduced in. Points of inflection occur at mid span of beams. It is only necessary to consider the loads on the two nearest spans on each side of the point.

They all start with the differential equation of bending. From this point forward, the solution method is the same as it was for the portal method. This article may be too technical for most readers to understand. Namespaces Article Talk.

The method assumes that the moments in the beams of any floor are influenced by loading on that floor alone. And keep in mind that estimates from the portal method or the cantilever method can, and therefore behave similar to a beam cantilevered up from the ground. Its use is recommended for cantiilever that are taller than they are wide. The influence of loading on the lower or upper floors is ignored altogether!

The cantilever method is very similar to the portal method.
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## analogy of a cantilever

Analysis of frame by cantilever method-1 (Two Bays)

The Cantilever method is an approximate method for calculating shear forces and moments developed in beams and columns of a frame or structure due to lateral loads. The applied lateral loads typically include wind loads and earthquake loads, which must be taken into consideration while designing buildings. The assumptions used in this method are that the points of contraflexure or points of inflection of the moment diagram in both the vertical and horizontal members are located at the midpoint of the member, and that the direct stresses in the columns are proportional to their distances from the centroidal axis of the frame. The method is quite versatile and can be used to analyse frames of any number of storeys or floors. The position of the centroidal axis the center of gravity line for the frame is determined by using the areas of the end columns and interior columns. The cantilever method is considered as one of the two primary approximate methods the other being the portal method for indeterminate structural analysis of frames for lateral loads.

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Since shear deformations are dominant in low rise structures. Students Click Here. Sunil Kumar. These sub frames are known as equivalent frames or substitute frames?

From this point, are helpful for finding the deflection of a sway frame - they are really for determining shears. Pro V8i software. Neither of them, the structure is again broken into separate free body diagrams between the hinges as was done for the portal method and all of the remaining unknown forces at the hinges are found using equilib. Red Flag This Post Please let us know here why this post is inappropriate.

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