A magazine article I wrote in 2002.

Calculate Beta w for Single Angles Dec 2019 (revised Jul 2021)
Closed form solution to single angle design equation.
Structural Property Calculator — Improved Dec 2019
Using SLY, I improved my domain-specific language (DSL) for calculating with AISC structural properties.
Structural Property Calculator on iPad/iPhone using Pythonista Oct 2019
Using SLY, I built a domain-specific language (DSL) for calculating with AISC structural properties.
AISC Bolt Shear — C Coefficient (with video) Jul 2019
Interface — Easier Slider Access (with video) Jul 2019
One slider at a time: On the left side of the screen is a column of labels, Precisely under each label is an invisible button, The invisible button responds to a tap by the user, In response, a single slider is activated, Clear and intuitive! See screenshot sequence below Use the GESTURE DOWN swipe to […]
Calculated examples — AISC Bolt Shear Jun 2019
AISC Bolt Shear Capacity — Improved UI Jun 2019
Better UI feedback, for: Last altered slider – label font is red All other altered sliders – label font is blue Unaltered sliders – label font is black Changed text for CHART button Added SCREENSHOT button Added RESET button
AISC Bolt Shear Capacity (with video) Jun 2019

What’s on the Pythonista menu? Yep, sliders! Side dish of booleans, integers and floats Dec 2018
I built this app and am running this app on my iPad. Credit to: mikaelho / pythonista – gestures tdamdouni / Pythonista Pythonista / slider / SliderWithLabel_danrcook.py The video shows an app with 8 inputs — 2 integer, 4 float, 2 boolean. Numeric input is tedious — at best; slider input is easier and offers positive feedback. In this […]
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