Category Archives: Structural terms

What Can Happen to Unbraced Wood Truss Web Members?

Posted by in Construction & Shortcuts, Structural terms, Wood | September 21, 2015

So, what happens when the web members of a wood truss are not braced laterally as specified by the truss manufacturer? When a wood truss is designed and constructed by a truss manufacturer, the manufacturer commonly provides drawings that show… Read More

Which wood framed structure would you expect to be stronger?

Posted by in Construction & Shortcuts, Structural terms | August 31, 2015

Which wood framed structure would you expect to be stronger? Number 1 or Number 2? Wood framed construction built in accordance with prescriptive framing methods. (Prescriptive framing methods are established upon rule of thumb guidelines that have developed from the… Read More

“I’ve Never Seen Any Shingles Like THIS Before!”

Posted by in Buying/Maintaining a Home, Roof, Shingles, Structural terms | May 11, 2015

“I’ve never seen any shingles like THIS before!” We have heard this comment more than a few times, even from roofers.  What was being referred to are the shingles seen in the feature photo and Figures WRS-1 and WRS-2.  These… Read More

What is Creep?

Posted by in Structural terms, Wood | March 10, 2014

Creep is a permanent sag in the wood member (it may also occur in concrete or masonry) caused by the stretching and adjusting of the wood fibers to the sustained weight on them, that is, the weight of the member… Read More

Collar Ties Vs. Rafter Ties

Posted by in Roof, Structural terms, Wood | January 02, 2014

In common rafter framing the rafters support the weight of the roof construction and snow or live load by pushing against the opposing rafters (at the ridge plate at the peak), pushing horizontally outward at the top of the supporting… Read More

Happy New Year 2014!!!!!!!!!!!!!!!!

Posted by in Celebrate, Structural terms | December 30, 2013

Did you know that the term “engineer” is from the Anglo-French word “enginer” which means to devise or construct? Some etymological sources state that “engineer” proceeded from the Latin word “ingeniare” which also means to contrive or devise. From these roots we… Read More

The Structural Fascia Board

Posted by in Roof, Structural terms, Wood | September 30, 2013

“It is our professional opinion that it is poor construction practice to support roof joists on the fascia board at the ends of the roof rafters.”  We have rendered this professional opinion with minor variations more than few times. The… Read More

Lateral Stability

Posted by in Structural terms | February 21, 2012

Lateral instability is a relatively common cause of structural failures, because it is often forgotten or misunderstood.  Lateral instability is a result of inadequate lateral stability.  Simply defined, lateral stability is the property of an object to develop forces or to have forces… Read More