Author Archives: dougaj4

Downloads update

Posted on March 19, 2023 by dougaj4

A list of files available for free download can be found under the Downloads link at the top of the page: The list has now been updated and there are now 189 files available for download, most with open source … Continue reading →

Posted in Computing - general, Excel | Tagged , , , , , , | Leave a comment

A not so easy problem

Posted on March 12, 2023 by dougaj4

A seemingly simple problem was posted in my Quora feed: or to put it more mathematically, what three positive integers satisfy the equation: It turns out the answer is not so simple. A full and detailed derivation can be found … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, PyXLL, UDFs | Tagged , , , , | Leave a comment

Displaying You-tube transcripts

Posted on March 9, 2023 by dougaj4

This is probably widely known, but I only found out this week. I find You-tube informative videos frustrating because you have to sit through 10-20 minutes of video to get maybe 1-2 minutes worth of information. If only you could … Continue reading →

Posted in Bach, Newton | Tagged , | Leave a comment

ULS Design Functions 2.16

Posted on February 25, 2023 by dougaj4

The ULS Design Spreadsheet has now been updated to Version 2.16, which can be downloaded from: ULS Design Functions The main new feature is the option to design for prestress loads applied to circular tanks. Due to axi-symmetric effects, when … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , , , | Leave a comment

Secondary moments in prestressed beams with FEA-2

Posted on February 14, 2023 by dougaj4

Following the first post in this series, this post compares friction losses in prestressing cables as defined in the Australian Concrete Structures Code (AS 3600), compared with a cable modelled with contact elements in Strand7. The example used is based … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7 | Tagged , , , , , , | 1 Comment