The H-Factor

Getting Darcy-Weisbach Values from a Foam Spec Sheet

In order to calculate certain foam systems, a Darcy-Weisbach calculation must be done, as opposed to a Hazen-William one. This was touched on in this older blog post: Darcy-Weisbach Who?

The following are numbers found in the technical data sheets of a particular brand of foam concentrate. Notes are added to illustrate which numbers go where.

 

How to do a Complete Cleanup of Autodesk Products after Uninstalling

If you have trouble with AutoCAD and uninstall it and reinstall it, you may still be getting the same errors and wondering why. This is because uninstalling AutoCAD does not remove all the 'crumbs' left behind. These crumbs can get in the way of a good AutoCAD reinstall.

There are a number of pages on Autodesk's Knowledge Base that deal with this, many of them redundant. Here is the best one I have found:

Remove Autodesk Software (Windows)