Category Archives: Newton

World’s Largest Natural Arches

Posted on 09/05/2013 by dougaj4

Update 9th May 2013: Not in the top 10 for size, but a little known rock formation in Australia: From AmusingPlanet.com and The Natural Arch and Bridge Society A natural arch is a geological formation where rocky cliffs subject to erosion … Continue reading →

Posted in Arch structures, Newton | Tagged , | 1 Comment

Section properties for groups of defined shapes

Posted on 12/04/2013 by dougaj4

Following a discussion at Eng-Tips, I have modified the section properties spreadsheet (presented here) so that section properties can be found for groups of defined shapes, including provision for translation and rotation of each shape, and application of different E … Continue reading →

Posted in Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA | Tagged , , , | 13 Comments

3DFrame Ver 1.03 and Frame4 Ver 3.07

Posted on 17/03/2013 by dougaj4

Updated versions of my 2D and 3D frame analysis spreadsheets are now available for download from: 3DFrame.zip Frame4.zip The download files include full open-source VBA code, and dll files for compiled solvers for much better performance with large models. See https://newtonexcelbach.wordpress.com/2012/11/16/frame4-now-with-added-alglib/ for … Continue reading →

Posted in Excel, Finite Element Analysis, Frame Analysis, Link to dll, Newton, VBA | Tagged , , , | 34 Comments

Tanh-Sinh Quadrature V4.1

Posted on 16/03/2013 by dougaj4

The latest update to the Tanh-Sinh Quadrature spreadsheet from Graeme Dennes is now available for download from: Tanh-Sinh. As usual, the download includes full open-source code and extensive documentation. Version 4.1 Release Notes  1.   Small but useful accuracy improvements have been … Continue reading →

Posted in Excel, Maths, Newton, Numerical integration, UDFs, VBA | Tagged , , , , | 1 Comment

Bridges Over the Tiber -3

Posted on 24/02/2013 by dougaj4

See Bridges Over the Tiber -1 for location map. The final installment of Bridges Over the Tiber brings us to the six bridges built in the 20 th Century, which can be grouped in three pairs: two copies of the ancient … Continue reading →

Posted in Arch structures, Historic Bridges, Newton | Tagged , , , | Leave a comment