Monday, March 15, 2010

Photo of the Day


Parallel Strand Lumber (PSL) hates water. Don’t believe me? Take a look below.
Although they are treated with a waterproof adhesive, the water can disintegrate PSLs causing them to lose their strength. The member shown in the photos is an exterior stairway column. The waterproofing was detailed incorrectly causing moisture to continuously attack the PSL. The screwdriver was inserted to its hilt with little effort.

Treat this is a cautionary tale of what could happen if you ignore the small things such as waterproofing details.Then think about how this problem can compound when there are 200+ of these columns on your building.