I built a short presentation demonstrating the use of CodeSkulptor3 (Python 3). This time, my goal was to illustrate coding a small graphic program — accessible from any device — desktop, phone, iPad. Feel free to follow the links and to offer a critique. How to Make a Graph Link to my layout PDF Code […]
Sol-20 Jul 2020
The Sol-20 home computer, with an Intel 8080 (2 MHz, RAM 1 kB up to 64 kB max), as seen in 1977 at Interactive Computers Located at 7646 1/2 Dashwood In Houston, Texas From the wiki: ‘The design was originally suggested by Les Solomon, the editor of Popular Electronics. He asked Bob Marsh of Processor […]
Gauss Profile Jun 2020
From the wiki https://en.wikipedia.org/wiki/Gaussian_function (go to wiki)
Best Detective Story Ever
Multi-Page Apps using Dash/PythonAnywhere Apr2020
AISC Strong Axis Bending https://khoitsma1.pythonanywhere.com/apps/app2 Replaces 45 pages in AISC 15th Manual Graphical and tabular data Change the shape selection (HP12, for instance) Hover over the chart data points AISC Filtered Shape Properties https://khoitsma1.pythonanywhere.com/apps/app3 All properties for a user’s selection (2L4X3X3/8X3/4SLBB , for instance) Just start typing 2L4 and the drop down will filter to […]
The Inexpensive Ventilator — Are We Building These ?
Percussionaire — Bird Respirator History Wiki — Ventilator
WT Braces Mar 2020
In the petrochemical business, it is quite common to see structural steel braces built from WT shapes. If you like Table 4-12 in the AISC 15th Edition, then you might like the attached example plots which I built on the same principle. AISC 15th Edition LRFD maximum axial capacities in kips; KL in feet Maximum […]
Hyatt Regency Walkway Collapse
Detailing matters! Original design vs Actual fabrication STRUCTURE Magazine August 2016
Yield Line Theory — Rotation Angles Feb 2020
In this post, I provide derivations for the rotation angles between planes. We have two formulas: An exact formula [Eq 1] An approximate (easy and sufficient) formula [Eq 2] My link to my calculations Link to Blodgett Example
Single angle braces vs WT braces Feb 2020
In the petrochemical business, it is quite common to see structural steel braces built from WT shapes. Because I prefer the simplicity of using a single angle brace, I prepared a general calculation set demonstrating a few use cases. Link to my single angle brace calculations
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