Can it only be from a stair, or can I use an alternating tread device or ships ladder with a hatch?
I know in the IBC you can use it only for an unoccupied roof, but I'm wondering about California Residential Code for a single family house (with a flat roof deck).
I can't find anything in the CBC that makes me think it is permitted, but I wanted to ask you smart folks. There's a lot of examples of where this condition is built: http://www.houzz.com/rooftop-deck-ships-ladder
JeromeS
Sep 3, 16 9:43 pm
Here in NJ, the IRC only applies to R-5, on and two family dwellings. Anything else, including R3 is IBC. IBC permits alternating tread stairs.
JeromeS
Sep 3, 16 9:52 pm
Set aside my previous answer: alternating tread devices are a means of egress. No means of egress is required from an unoccupied roof.
Tyler Wallace
Sep 3, 16 10:29 pm
Thanks for the response Jerome, although I'm really confused by what you've written. There is no R-5 occupancy in the IRC or IBC, and as I mentioned, the roof is occupied. I know you can use them from an unoccupied roof. Regardless, California Residential Code includes R-3, which is what I'm talking about (just residential code)
gruen
Sep 4, 16 12:32 pm
R5 is written into some jurisdictions. Just put a regular stair. Roof deck is the place to drink, don't make them fall down a ladder. There's no allowance in the IRC for anything other than stairs.
JeromeS
Sep 4, 16 12:46 pm
How does 1006.3 impact your design, including tables?
Tyler Wallace
Sep 4, 16 1:12 pm
Not sure I'm looking at the right 1006.3, I'm seeing egress illumination.
I think gruen is right, I was hoping there might just have been something I overlooked
JeromeS
Sep 5, 16 9:17 am
We are using 2015. 1006.3 is egress from occupied roofs...
neejgore
Nov 11, 21 1:33 am
Hey Tyler, did you get an answer to this question? I have a similar one that I am trying to figure out now. Thanks in advance.
Tyler Wallace
Nov 11, 21 11:45 am
This is a while back, but I don't remember finding anything that permitted it. I think it is just for unoccupied roofs that it is okay. Similar, but related, I think you can do a ladder/alternating tread up to a loft if it's limited to a certain size.
Can it only be from a stair, or can I use an alternating tread device or ships ladder with a hatch?
I know in the IBC you can use it only for an unoccupied roof, but I'm wondering about California Residential Code for a single family house (with a flat roof deck).
I can't find anything in the CBC that makes me think it is permitted, but I wanted to ask you smart folks. There's a lot of examples of where this condition is built: http://www.houzz.com/rooftop-deck-ships-ladder
Here in NJ, the IRC only applies to R-5, on and two family dwellings. Anything else, including R3 is IBC. IBC permits alternating tread stairs.
Set aside my previous answer: alternating tread devices are a means of egress. No means of egress is required from an unoccupied roof.
Thanks for the response Jerome, although I'm really confused by what you've written. There is no R-5 occupancy in the IRC or IBC, and as I mentioned, the roof is occupied. I know you can use them from an unoccupied roof. Regardless, California Residential Code includes R-3, which is what I'm talking about (just residential code)
R5 is written into some jurisdictions. Just put a regular stair. Roof deck is the place to drink, don't make them fall down a ladder. There's no allowance in the IRC for anything other than stairs.
How does 1006.3 impact your design, including tables?
Not sure I'm looking at the right 1006.3, I'm seeing egress illumination.
I think gruen is right, I was hoping there might just have been something I overlooked
We are using 2015. 1006.3 is egress from occupied roofs...
Hey Tyler, did you get an answer to this question? I have a similar one that I am trying to figure out now. Thanks in advance.
This is a while back, but I don't remember finding anything that permitted it. I think it is just for unoccupied roofs that it is okay. Similar, but related, I think you can do a ladder/alternating tread up to a loft if it's limited to a certain size.