- What is a Fire Barrier?
- A continuous membrane, either vertical or horizontal such as a wall or floor assembly that is designed and constructed with a specified fire resistance rating to limit the spread of fire and restrict the movement of smoke.
- What is an Elastomeric Material?
- It is a flexible, low modulus material capable of expanding, contracting and returning to original dimensions without fatigue.
- What is an Intumescent Material?
- It is a material that is designed to expand significantly (typically 2 to 10 times its original volume) when exposed to sufficient heat.
- What is a Firestop System?
- It’s an assembly consisting of:
- The penetrant or penetrants
- The opening through a particular type of wall or floor
- The firestop material and design that are used to seal the opening or protect the penetrants
- What is the difference between a penetrant/penetrating item and a membrane penetration?
- A penetrant/penetrating item is an item that passes completely through a wall or floor such as pipes, conduits, cables, etc.
- A membrane penetration is an opening made through one side (wall, floor, or ceiling membrane) of an assembly.
- What are the different types of ratings as described in various UL tested systems?
| L Rating | An optional measurement of the rate of air leakage through test samples resulting from a specific air pressure difference applied across the surface of the test sample |
| F Rating | The time a firestop system prevents the passage of flame through an opening and successfully the hose stream test as determined by ASTM E-814 and UL 1479 |
| T Rating | The time for the temperature of the unexposed surface of the firestop system or any penetrating item to rise 325 degrees Fahrenheit above its initial temperature as determined by ASTM E-814 and UL 1479 |
- What is a fire resistance rating?
- The period of time a buildings component maintains the ability to confine a fire, continue to perform a structural function or both.
- What do we mean by a penetrant requiring annular space?
- Annular space (annulus) is the area or region measured in a straight line between penetrants or between the outer most portion of the penetrants and the inside periphery of a circular opening or the sides of a rectangular opening.
- What is passive fire protection?
- It is a device or system designed to confine fire and smoke.
