ᐅ Flat roof construction with a self-supporting railing or similar structure
Created on: 31 Mar 2020 19:02
B
Bocatoo
Hello everyone,
who has experience or knowledge about the "construction" or use of a flat roof? Specifically, it concerns using a flat roof for occasional access, such as a rooftop garden, etc. The main point is this: one part of the roof (not on the outer edges!) should be secured with a railing.
There is the possibility of using industrial-type inspection railings which are free-standing due to their own weight and additional load (gravel, slabs). Would this be feasible on a private house? Has anyone done this before? Has anyone installed something similar without penetrating the roof membrane?
(Structural stability, etc., is not an issue.) The building regulations of North Rhine-Westphalia (NRW) do not specifically address this.
2) Access to the flat roof can be achieved in various ways. A preferred option is an internal stairway combined with a roof hatch with a glass dome that opens and closes electrically. Has anyone installed something like this or found a different solution?
Any experiences or insights are welcome, thank you!
who has experience or knowledge about the "construction" or use of a flat roof? Specifically, it concerns using a flat roof for occasional access, such as a rooftop garden, etc. The main point is this: one part of the roof (not on the outer edges!) should be secured with a railing.
There is the possibility of using industrial-type inspection railings which are free-standing due to their own weight and additional load (gravel, slabs). Would this be feasible on a private house? Has anyone done this before? Has anyone installed something similar without penetrating the roof membrane?
(Structural stability, etc., is not an issue.) The building regulations of North Rhine-Westphalia (NRW) do not specifically address this.
2) Access to the flat roof can be achieved in various ways. A preferred option is an internal stairway combined with a roof hatch with a glass dome that opens and closes electrically. Has anyone installed something like this or found a different solution?
Any experiences or insights are welcome, thank you!
ypg schrieb:
Draw it out! No one can understand it otherwise. The existing condition, the existing condition!
It’s about the law, not the design. Site plan and zoning plan are what count.
Bocatoo schrieb:
...for example.I didn’t mean an example, but the specific situation.https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
There is no existing structure, no existing condition.
Everything is still in the planning phase.
Therefore, everything will be included in the building permit / planning permission application.
We are located in an outer development area according to §34, everything is approved and possible, this has been clarified (preliminary building inquiry).
... but this does not change what I want to ask about .... see post,
"....... does anyone have experience with this and/or has built or installed something similar (free-standing fall protection barriers!)
The situation is roughly like in the photo, but for a flat roof new build..."
Everything is still in the planning phase.
Therefore, everything will be included in the building permit / planning permission application.
We are located in an outer development area according to §34, everything is approved and possible, this has been clarified (preliminary building inquiry).
... but this does not change what I want to ask about .... see post,
"....... does anyone have experience with this and/or has built or installed something similar (free-standing fall protection barriers!)
The situation is roughly like in the photo, but for a flat roof new build..."
Birkenfelder1 Apr 2020 08:33Hello,
It always depends on the roof construction underneath. If the flat roof consists of trapezoidal metal sheets, insulation, and a green roof system, there is nothing you can attach the railing to. If you have a concrete slab, you can anchor any type of railing to it.
But be careful: Every penetration of the waterproofing membrane carries the risk of leaks!
A plan or sketch would be really helpful.
No offense intended, but I had to smile a bit at the term "freestanding fall protection."
It always depends on the roof construction underneath. If the flat roof consists of trapezoidal metal sheets, insulation, and a green roof system, there is nothing you can attach the railing to. If you have a concrete slab, you can anchor any type of railing to it.
But be careful: Every penetration of the waterproofing membrane carries the risk of leaks!
A plan or sketch would be really helpful.
No offense intended, but I had to smile a bit at the term "freestanding fall protection."
Thank you,... so it looks like there are at least two of us. I have to smile here because apparently no one is really reading carefully or making the effort to do so... and I hope you know what the term "cantilevered/self-supporting fall protection" actually means... and for the second time: no, not a concrete slab (otherwise it could be fixed, which I don’t want due to penetrations... see text), and yes... I know everything is stated there... no penetrations... yes, that’s why I asked the question again earlier, or actually right from the beginning... no sketch needed for that! I want to know if anyone has possibly installed something like this, is satisfied with it, or can recommend a manufacturer..., like the example attached.
Birkenfelder1 Apr 2020 10:00Bocatoo schrieb:
...There is the option of industrial inspection railings that stand freely by their own weight and additional load (gravel, slabs). Would this be feasible on a private house? Has anyone done this before? Who has installed something similar and how was it done without penetrating the roofing membrane?
...This is often done later in industrial construction. It is approved, looks terrible, and is installed if no one was previously contracted for fall protection.
Bocatoo schrieb:
2) Access to the flat roof can be possible via various routes. Preferred is an internal access/staircase combined with a roof hatch with a glass dome and electric open/close function. Has anyone ever installed something like this or solved it differently? Any experience on this topic is appreciated, thank you! This is also quite common in industrial construction. A skylight dome (usually made of GRP) with an electric motor and a ladder placed from below when someone needs to access the roof for maintenance. The advantage is that you don’t have an unsightly fixed climbing ladder on the interior wall. An alternative would be a fixed climbing ladder on the exterior wall, but that is not very attractive visually either.
I always get uneasy when a railing does not have a proper connection to the substrate. Of course, it works with large base plates (= own weight) and gravel on top. You can have this made by any metalworker or, like the manufacturer in your photo (Fa. Hei...), produce it accordingly. However, I have no personal experience with such railings.
How often does someone actually need to access the roof for maintenance? There is also the option of fitting anchor points on the curb of the skylight dome, where a safety rope can be attached during maintenance. Then the issue of a railing is completely avoided.
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