Category Archives: VBA

When does 35 not equal 35?

Posted on 20/12/2011 by dougaj4

… and when does 35 – 35 not equal zero? In the first case the answer is when one “35” is on an Excel spreadsheet and the other 35 is in VBA.  The question arose from the ongoing continuous beam … Continue reading →

Posted in Excel, Maths, Newton, VBA | Tagged , , , | 12 Comments

Continuous Beams With Spring Supports by Macaulay’s Method

Posted on 15/12/2011 by dougaj4

Following the last post on this topic: Continuous Beams With Cantilevers by Macaulay’s Method, and by popular demand, I have now updated the continuous beam and single span analysis functions to accept spring translational and moment restraints.  Also added is … Continue reading →

Posted in Beam Bending, Excel, Frame Analysis, Newton, UDFs, VBA | Tagged , , , , , | 36 Comments

Continuous Beams With Cantilevers by Macaulay’s Method

Posted on 05/12/2011 by dougaj4

Edit 13 Apr 2014: See Continuous Beam Spreadsheet with Moving Load for the latest version, which is now called ConBeamU. I have updated the Macaulay spreadsheet (described here) to allow the analysis of continuous beams with cantilevers at one or … Continue reading →

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

Linest, NPV, IRR and solving polynomials

Posted on 01/12/2011 by dougaj4

In a comment on Using LINEST for non-linear curve fitting Lori Miller posted a formula that found the coefficients fitting a cubic polynomial curve to a set of data, then solved the resulting equation to find the X value for a given … Continue reading →

Posted in Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , | 3 Comments

Linestgap with data in rows

Posted on 26/11/2011 by dougaj4

In response to a comment I have modified the LinestGap function to work on data arranged in rows.  This function works the same as the Excel built in LinEst function, but ignores any data that has a blank cell in the … Continue reading →

Posted in Excel, UDFs, VBA | Tagged , , , , , , | 11 Comments