T Rating/Bus Duct

[Theatwole]

Am wondering if there is penetration system in UL that provides 2 hour T rating for Bus Duct penetration of floor. Doesn't seem to be anything out there that fits the bill.

 

[jim dungar]

Am wondering if there is penetration system in UL that provides 2 hour T rating for Bus Duct penetration of floor. Doesn't seem to be anything out there that fits the bill.

In the old days I spec'ed busduct that had internal smoke barriers and "wall/floor flanges" located at each floor level. I do not remember the fire rating. Check with the busduct manufacturer.

 

[sandsnow]

If they have finally come up with one, it has been real recent. Like last six months recent. There are only about a dozen systems between all the firestop manufacturers for floor penetrations in concrete decks. With a wood frame floor you are out of luck unless there is someting new. Typically wood frame does not go high enough to justify busway.

 

[brian john]

Not sure about whats available but I can tell you the installed systems are all defeated when IT, TELCO or Electrician needs a floor to floor penetration. This includes the water dams.

 

[sandsnow]

Not sure about whats available but I can tell you the installed systems are all defeated when IT, TELCO or Electrician needs a floor to floor penetration. This includes the water dams.

Very few buildings have bldg engineers who are on the ball.