High-Rise Stairwell Compromise?

[jar546]

No one knows when this was done but by the condition of the EMT, it is not very old and does not match the age of the building. This is in the stairwell of a high-rise building.
What do you see wrong with this installation, if anything?

 

[RLGA]

Is the fire-resistance rating of the enclosure wall maintained with the electrical box/panel(?) installation? It’s hard to tell.

 

[steveray]

If it is not "life safety" it is not allowed in the enclosure here....And then as Ron said....Is the rating maintained behind it? Never done a highrise so I won't speak specific to that...

 

[classicT]

713.8.1 Prohibited Penetrations
Penetrations other than those necessary for the purpose of the shaft shall not be permitted in shaft enclosures.

 

[Builder Bob]

I would be more concerned about the size of he box and allowable number of square inches allowed per 100 square feet of wall........ or something of that nature. I doubt the block wall is thick enough to have calculated fire resistance maintained for the stair shaft. 714.3.2 2015 ibc

 

[RLGA]

I would be more concerned about teh size of he box and allowablw number of square inches allowed per 100 square feet of wall........ or something of that nature.

That would only be applicable if the installation was a membrane penetration. I think the box far exceeds 16 sq. in. maximum allowed per penetration even if the total area is less than 100 sq. in. per 100 sq. ft.

If the cells on each side are filled with grout, the course above and below the box are solidly filled, and the solid masonry depth behind the box complies with the minimum required equivalent thickness, then I would say it would be acceptable...but I can't tell from this photo.

 

[Builder Bob]

RLGA it is the depth of the box and the width of the block that has me concerned - You did an admiral job of clarifying my concerns.......