Category Archives: Newton

The structural analysis of domes: From Pantheon until Reichstag

Posted on 21/11/2010 by dougaj4

An interesting paper with technical details of several historical domed structures, available for free download, from Dokuz Eylul University, Izmir, Turkey: The structural analysis of domes

Posted in Arch structures, Newton | Tagged | 1 Comment

Revision to CSpline2.xls

Posted on 11/11/2010 by dougaj4

It was recently reported to me that the cubic spline spreadsheet CSpline2.xls (posted here) was crashing on loading in Excel 2003.  It seems that the problem was with the ChartSpline function, and that there are no problems if this function is … Continue reading →

Posted in Drawing, Excel, Maths, UDFs, VBA | Tagged , , | 6 Comments

Stress blocks in AS 3600

Posted on 30/10/2010 by dougaj4

The long awaited update to the Australian Standard for concrete structures (AS 3600 – 2009) provides rules for the design of structures with concrete up to a compressive strength of 100 MPa.  Unfortunately there are a number of significant typographical errors … Continue reading →

Posted in Concrete, Newton | Tagged , , , , | 3 Comments

Tanh-Sinh Quadrature update

Posted on 20/10/2010 by dougaj4

Graeme Dennes has been continuing work on his Tanh-Sinh Quadrature function, and recently sent me a revised version, which can be downloaded from: Tanh-Sinh.zip The main change is a new automatic tolerance adjustment feature which automatically increases the tolerance for … Continue reading →

Posted in Excel, Maths, Newton, Numerical integration, UDFs, VBA | Tagged , , , , , , , | 9 Comments

Update to Beam1 and Beam2

Posted on 16/10/2010 by dougaj4

It has just been pointed out that the single span beam spreadsheet presented at Frame Analysis with Excel 1 does not work for a propped cantilever.  The same applies to the spreadsheet for single span sloping beams at Frame Analysis with … Continue reading →

Posted in Beam Bending, Excel, Frame Analysis, Newton | Tagged , , | 3 Comments