Tag Archives: elastic analysis

Elastic Biaxial Bending

Posted on April 11, 2021 by dougaj4

Spreadsheets performing Ultimate Limit State analysis with biaxial moments have been presented previously, most recently here: Biaxial bending update I have now modified the Beam Design Functions spreadsheet to carry out a biaxial moment analysis with linear elastic material properties. … Continue reading →

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Evaluating text with units and finding the neutral axis

Posted on January 7, 2018 by dougaj4

A few weeks ago a comment asked for guidance on finding the moment capacity of a reinforced concrete section.  This post will look at finding the depth of the neutral axis (NA) in a rectangular section, with a single layer of … Continue reading →

Posted in Beam Bending, Concrete, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , , , | 7 Comments

Using Beam Design Functions

Posted on September 7, 2011 by dougaj4

“Beam Design Functions” is an Excel spreadsheet providing a User Defined Function (UDF) that will calculate the stresses, strains, forces and moments in a reinforced or prestressed concrete section subject to any specified bending moment and axial load, using an … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , , | 12 Comments

Analysis of RC circular sections – theory and code

Posted on April 25, 2010 by dougaj4

The basic tasks involved in analysing the stresses and strains in a reinforced concrete section under combined bending and axial load are: Assuming a horizontal beam with the top of the beam in compression and the bottom in tension Find … Continue reading →

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Reinforced concrete elastic analysis; Circular section

Posted on April 24, 2010 by dougaj4

Previous posts have presented the theoretical background to finding stresses and strains in a reinforced concrete section built up of trapezoidal layers and subject to combined bending and axial loads.  A spreadsheet with User Defined Functions (UDFs) and open source code … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , | 1 Comment