Educational Credit Made Easy

What is a credit? Saturn uses a formula to calculate how many average hours of student effort that a lesson or course requires. Of course, effort hours differ among different students, but our calculation is a good average. The easiest way to understand the convoluted...

What is Electricity

What the EPA Says EPA’s new final rule on Carbon Pollution Emission Guidelines for Existing Stationary Sources: Electric Utility Generating Units  “Energy is transmitted, not electrons. Energy transmission is accomplished through the propagation of an...

More on Moisture and Insulation

The Experimental Findings Building Science Corporation (BSC) published a recent report that spawned a Journal of Light Construction (JLC) article called “Moisture in Fat Walls”. Two of the three walls studied are double walls with R-values in excess of...

Evaluating the Need for Supplemental Combustion Air

This post is a revised version of the last post about Evaluating Combustion Air. The changes are a result of the many discussions I had with the experts in the previous post. You know who you are. Thank you. I continue to value your suggestions. Feel free to comment...

Evaluating Combustion Air

Hey, I would really appreciate some feedback on this method of evaluating combustion air. Unnecessary Holes in the Building Contractors often cut combustion-air holes in ceilings, floors, walls, and doors without knowing whether the combustion appliance zone (CAZ)...