Correct term for "roof access enclosure"

[Michael Thomas]

No, I didn't inspect this one... I don't have a picture from the inspection, and this is the first depiction of this type of "roof access enclosure" GOOGLE turned up...

Anyway, what is the correct term for this structure?

- Thanks

[Mark Aakjar]

Crap is what it looks like;) Not to be on the to technical side but I always referred to them as roof accesses, and when stairs where involved stair roof access and I have said it to and heard it from architects and engineers alike. some may refer to the roof as a W/X pronounced wixs.

[CHARLIE VAN FLEET]

mike

looks like a BIG shed style roof

charlie

[H.G. Watson, Sr.]

bulkhead

[CHARLIE VAN FLEET]

h.g

isn't a bulkhead a struture that protrudes up from another roof or ship, go navy--this looks like a ground struture with a shed sloped roof???

charlie

[CHARLIE VAN FLEET]

hg
looking at the picture again--it is on a roof, oh well ,go navy

charlie

[Michael Garrity]

It is a mono pitched roof

[John Kogel]

It's where the good guys go when the bad guys are chasing them, and the doors are never locked.:)

"Roof access enclosure" is good enough for Google.:)

[Frank Suchodolski]

Most structures built on roofs would be termed "Penthouse" (no, not the magazine) or as i like to call them URA "Upright Roof Access", gotta hate those roof hatches, especially when the hatch opens the wrong way.

Frank Suchodolski, RRO

[Mark Aakjar]

Most structures built on roofs would be termed "Penthouse" (no, not the magazine) or as i like to call them URA "Upright Roof Access", gotta hate those roof hatches, especially when the hatch opens the wrong way.

Frank Suchodolski, RRO

The roof access is a catch 22 egress reasons want the door to swing out but if you live where there is snow anytime after large a storm your not getting up there.

[Shawn Best]

Idustrial Art...?:D

[A.D. Miller]

If it were in a pitched roof it would be a shed dormer, but it's not.

If it had a glass roof along with those glass windows it might be a skylight, or even a greenhouse, but it's not.

If it were in a ship or on the front of a shop building it would be a bulkhead, but it's not.

I would call it the roof access door enframement or structure.

[H.G. Watson, Sr.]

AD,

that may be, but the Chicago ordinances (building codes) refer to it as a bulkhead (reached by stairs, as opposed to the smaller via ladder scuttle), and have since at least 1905.

Ex.

Passed March 13, 1905 Chicago Building Code, Sect. 617: "Every tenement house shall have in the roof a bulkhead or scuttle, fireproof or covered with fireproof materials, with stairs or ladder leading thereto; no such roof opening shall be less than two feet by three feet. No scuttle or bulkhead door shall have upon it any lock, but may be fastened on the inside by movable bolts or hooks."

Current ex.: Present day Chicago Building Code, 15-8-560 Miscellaneous roof structures. "Miscellaneous roof structures, including dormers, bulkheads, scuttles and similar structures shall be consturcted of material not less fire-resistant than required for the roof construction on which they are erected."

NYC & NYS still call them bulkheads too (as do most firefighters).

If the enclosure over stairs which provide roof deck access - bulkhead.




NY: "A: Interior Stairs shall provide Roof Access as follows:

-At least one Interior Stair shall provide Roof Access in buildings or building sections greater than 3 stories or 40' high, when the roof has a slope of less than twenty degrees. Access to setback roof areas may be through a door or window opening to the roof. Interior stairs extending to roofs shall be enclosed in bulkheads of fire-resistant construction."

[H.G. Watson, Sr.]

If it were in a pitched roof it would be a shed dormer, but it's not.

If it had a glass roof along with those glass windows it might be a skylight, or even a greenhouse, but it's not.

If it were in a ship or on the front of a shop building it would be a bulkhead, but it's not.

I would call it the roof access door enframement or structure.

I think from the picture and description MT provided, and the ensuing discussion, it was clear the term was not pertaining to a Naval, Aeronautics or Civil Engineering context.

Bulkhead is correct, used in the Chicago Codes, Firefighters frequently apply the term as well.

According to Merriam-webster.com its history dates back to at least 15th century relating to structural/building term usage.

bulkhead - Definition from the Merriam-Webster Online Dictionary (http://www.merriam-webster.com/dictionary/bulkheads)

and from: Bulkhead Definition | Definition of Bulkhead at Dictionary.com (http://dictionary.reference.com/browse/bulkhead)

bulkhead
-noun

Nautical. any of various wall-like constructions inside a vessel, as for forming watertight compartments, subdividing space, or strengthening the structure.
Aeronautics. a transverse partition or reinforcing frame in the body of an airplane.
Civil Engineering.
a partition built in a subterranean passage to prevent the passage of air, water, or mud.
a retaining structure of timber, steel, or reinforced concrete, used for shore protection and in harbor works.
Building Trades.

a horizontal or inclined outside door over a stairway leading to a cellar.
a boxlike structure, as on a roof, covering a stairwell or other opening



Chicago ordinances & Illinois Fire Marshal would more accurately call the pictured a "roof bulkhead".;)

[A.D. Miller]

HG: I spoke too soon, having only glanced at the OED, which does not support the definition. The unabridged versions of Webster's (not yours quoted) and American Heritage do support it. That's a new usage of the term for me.

Live and learn.;)

[H.G. Watson, Sr.]

HG: I spoke too soon, having only glanced at the OED, which does not support the definition. The unabridged versions of Webster's (not yours quoted) and American Heritage do support it. That's a new usage of the term for me.

Live and learn.;)

Seems to be going out of fashion, as my generation and the next die off will likely become obsolete after four centuries and over two decades of internet. :D

I'm still struggling with gia-normous and some of the other recently fashioned words.:o