To slow or prevent the spread of fire, building codes require fire-resistant or fire-rated assemblies in certain locations, occupancies, and types of buildings. When fire-rated walls and/or floor/ceiling assemblies are required, a fire barrier over the walls is typically necessary to prevent flames from escaping the confinement provided by the wall or ceiling assembly. The ...

Web stiffener blocks may be comprised of lumber, rim board, or wood structural panels. The minimum grade of wood structural panels is Rated Sheathing; minimum lumber grade is Utility grade SPF (south) or better. Any rim board product would also work satisfactorily. Ideally, the depth of the web stiffener should equal the distance between the ...

Filler blocks are used to fill the rectangular space between a pair and more of I-joists acting as a single bending member. The purpose of the blocks is to transfer load from one bending member to the next – load sharing. This is accomplished by forcing each of the joists to deflect the same amount ...

Fiberglass-reinforced-plastic (FRP) overlaid plywood is an engineered product consisting of APA trademarked plywood securely bonded between tough glass fiber-reinforced resin surfaces. The composite produces a strong yet lightweight panel. A thin nonporous surface finish provides color, weather ability and additional durability. Different surface finishes are available. Glass content and overall thickness of the overlay can ...