To choose a system, we need to know the basic details of the
application.
■ ■ What type of building assemblies is the joint formed by? - Floor/
■ ■ What type of material is the building assembly? - Concrete, CMU,
■ ■
■ ■
■ ■
■ ■
Floor, Floor/Wall, Wall/Wall, Top of Wall/Ceiling
Gypsum
What is the hourly rating you are looking for? - Assembly rating (1 –
4 hour)
How big of a joint is required (inches)
How much movement is required? - Must accommodate building
movement (% of the joint size)
Are there any special considerations? - Unique construction
condition, environmental exposure
NAVIGATING UL
Example 1:-
HW-D-0286 - Head of Wall
First Two Alpha Characters – identify the type of joint system,
barriers that form the joint.
■ ■
■ ■
■ ■
■ ■
FF = Floor-to-Floor
WW = Wall-to-Wall
FW = Floor-to-Wall
HW = Head-of-Wall
117