Online educational resource on achieving indoor environmental quality with radiant based HVAC systems
Not for profit educational resource on indoor environmental quality.
 Bookmark and Share
residential heating design

  Part IV, Wood Is Good - Special Feature

Hardwood Science (PDF view, please be patient, 30 seconds to load)
Return to Hardwood
Part I, Part II, or Part III

"Wood expands and contracts based on the relative humidity the wood is exposed to (Figure 1). It is not unusual for interior wood moisture content to cycle between 6% and 12% moisture content seasonally. This creates interesting wood trim and wood flooring problems and sometimes makes opening and closing wood doors a challenge. Stranger still is that when wood shrinks and expands, it shrinks and expands differently along the grain than perpendicular to the grain. It shrinks and expands much more at a right angle to the grain, than along the grain." Excerpt from Wood is Good...But Strange By Joseph W. Lstiburek, Ph.D., P.Eng., Fellow ASHRAE

This page requires Adobe Reader (click here). Presented with Permission from ASHRAE (c) 2007, American Society of heating, refrigeration, air conditioning engineers. Place cursor over document and page up or page down. Right mouse click to access viewing options.

If you would like to discuss this article online click here.


Home | Seminars | Solutions | Heating Cafe | Contribute | Online Help | Bean's Blog | About Us | Glossary
Privacy Policy | Legal | Contact Us | Site Map |
Carlson-Holohan Award| Send Us Your Comments

Copyright © 2012 Healthy Heating. All rights reserved.
Site developed by WebworX.ca 
 
Donate using PayPal, Credit Cards Accepted  
Healthy Heating accepts Visa, Mastercard, Amex and Discover.