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

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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 , , , , , , | Leave a comment

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

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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 , , , , | Leave a comment

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 , , , , , , , , | 1 Comment