Author Archives: dougaj4

Falling Faster

Posted on 26/03/2015 by dougaj4

A recent paper by  Alexander Klotz of McGill University, Montreal, has stirred a bit of interest in the pop-science press.  The paper looks at the old question of the time taken to fall through a hole passing through the centre … Continue reading →

Posted in Excel, Maths, Newton | Tagged , , | 4 Comments

Little Pics

Posted on 25/03/2015 by dougaj4

Little Pics is my daughter’s video production company: We make dynamic online content. Videos that explore your brand, product or history for any size company, big or small. We care about the people behind the company and the stories behind the … Continue reading →

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

Getting concrete shrinkage right

Posted on 21/03/2015 by dougaj4

At the end of last year, very quietly, the commentary to the Australian Concrete Structures Code (AS 3600) was published.  The commentary provides a wide range of explanatory and background information to the requirements in the main code, including some … Continue reading →

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

Pi day of the Century

Posted on 14/03/2015 by dougaj4

In North America, where today is 3-14-15, it is Pi day, and since there are not 31 days in April, the rest of us have to go along with that as well. Not only is it Pi day, it’s the … Continue reading →

Posted in Charts, Excel, Maths, Newton | Tagged , , , , , | 6 Comments

Continuous Beams with Specified Deflections

Posted on 26/02/2015 by dougaj4

A few weeks ago there was some discussion in a previous continuous beam post about how to analyse a continuous beam with specified deflections at the supports.  In this post I will look at three different ways of doing this … Continue reading →

Posted in Excel | Tagged , , , , , | 1 Comment