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# Tag Archives: VBA

## Newton-Raphson and Brent’s Method – Solver examples

I recently discovered the Computing Skillset site (via open-struct-engineer), which has good information on the basis and use of the Newton-Raphson method: The Newton Raphson method explained, details, pictures, python code Highly instructive examples for the Newton Raphson method I … Continue reading

Posted in Excel, Maths, Newton, UDFs, VBA
Tagged Brents method, Computing Skillset, Excel, Newton Raphson Method, UDF, VBA
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## Spherical Geometry and Vincenty’s Formulae

Wikipedia has detailed articles on: Spherical Geometry and Vincenty’s Formulae (for geometric calculations on an ellipsoid). The spreadsheet Vincenty.xlsb uses those resources to perform the following calculations, using both on-sheet calculations and VBA user-defined functions (UDF’s): Calculation of distance and … Continue reading

Posted in Computing - general, Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA
Tagged ellipsoid area, ellipsoid distance, Excel, Spherical Geometry, UDF, VBA, Vincenty's Formulae
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## Concrete Stress Blocks

Back in 2010 and 2011 posts here looked at a comparison of alternative stress blocks in the then new AS 3600, and a procedure for calculating parameters for a rectangular stress block exactly equivalent to the Eurocode 2 parabolic-rectangular stress … Continue reading

## Section Properties for Rotated Shapes

I have just posted an update to my section properties spreadsheet, last discussed at: Using Section Properties- Group The new version can be downloaded from: Section Properties07-Group.zip The main sheet provides section properties for a wide variety of defined shapes: This … Continue reading

Posted in Beam Bending, Coordinate Geometry, Excel, Frame Analysis, Maths, Newton, UDFs, VBA
Tagged Excel, section properties, section properties of rotated shapes, UDF, VBA
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## Reinforced Concrete Design for Circular Sections to Eurocode 2

As mentioned in the previous post, the Reinforced Concrete Design Functions spreadsheet includes a function for ULS analysis of circular sections, using either a rectangular or a parabolic-linear stress block. A new CircuPF function has now been added, for codes … Continue reading

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA
Tagged Eurocode 2, Eurocodeapplied, Excel, RC Design Functions, Reinforced concrete design, UDFs, UK National Annex, ULS design of circular section, VBA
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