Angle Iron Retrofits.

Angle Iron Braces

This video discusses an untested retrofit method that your contractor or engineer may recommend.  It is a general standard of practice that only tested retrofit hardware and methods should be used.  Otherwise, what will happen is anyone’s guess.

The information in this video was created after consultations with numerous structural engineers.  Structural engineer  Josh Kardon Ph.D. told me they would be happy to tell people his opinion if you want to call them.

Kelly Cobeen was kind enough to do actual calculations regarding their effectiveness.  In conclusion she discovered that an Angle Iron Brace has the strength of 1/4 a bolt.  Numerous structural engineers were kind enough to answer questions I had about their efficacy.  In addition, Buddy Showalter with the American Wood Council, the largest wood products research center in the world, was willing to give his expert opinion where in he said he was perplexed that anyone would retrofit a house in this manner.  All of these engineers are highly distinguished in field of wood-frame seismic retrofitting.


Sample Angle Iron Braces


Image of angle iron braces from contractor website

Photograph of angle iron installed under house