Laminated Veneer Lumber I

 Laminated Veneer Lumber (LVL) flooring systems are becoming more and more prevalent throughout the country and in particular the Northeast. 

 They are designed for a number of reasons, some of which are :

• The ability for larger open spaces, up to 25 % greater distances,
• Lighter and more cost effective than traditional flooring systems,
• Stronger floors, allowing greater loads placed upon them,
• Less warping and the elimination of squeaks.

 These are but a few reasons why we are seeing more of this type of construction. I have even been told of one Taxpayer, that after a fire damaged the store, the roof structure was replaced with the LVL system. Another reason why the Fire Department should be in charge of building inspectors but I'll save that rant for another day.

 Although LVLs have all these reasons that make them attractive, they have one flaw that concerns us, ability to maintain structural stability under high heat conditions.

 We as fire fighters must understand that if heavy fire is in the void spaces that LVLs create, we have to back out of that area and consider collapse potential. Many Institutes and people with letters after their name have tested these product and concurred that these systems will fail in a very short time (3 to 5 minutes)when exposed to fire.

 The best time to find and record the presence of these systems is during the construction phase, before they are covered up by ceilings and top flooring. Make a note and have the information entered into the CAD system.

 If you respond to a fire in a building with this type of construction, one of the first tactics to be performed besides a Primary search or hose line advancement, is to open up these spaces and check for fire.

 Before cutting floor boards ( venting basement fires or opening up around fire places) and now even venting the roof, try to make sure as much as possible what type of support system is there.