Attic conversion 3 story house

sullydublin

Has anyone gotten their attic converted in a 3 story house. We live in a recent new build and the attic space is decent for extra storage or maybe an office space and would love to know if these spaces could be used.

House is concrete built with steels already in place in the attic by the looks of it.

Gumbo

So you have 3 stories, and you want to go to 4 stories?

sullydublin

Yep as silly as it sounds

Gumbo

https://www.boards.ie/discussion/comment/118528101#Comment_118528101

Not silly. Just wanted to clarify before commenting.

There are some very strict rules when building a 3 storey dwelling from a fire safety point of view. When you enter a 4 storey dwelling you go even stricter. You may need a second staircase.

check out TGD Part B Dwelling Houses.

Mellor

https://www.boards.ie/discussion/comment/118528527#Comment_118528527

I think a 4 storey dwelling is the same class as a 3 storey dwelling (Class 1b). There doesn't appear be be any limit preventing it being 4 story (Class 1c is limited to 3 stories). And many of the requirements should already be in place.

Gumbo

https://www.boards.ie/discussion/comment/118543591#Comment_118543591

Section 1.3.4 - http://www.housing.old.gov.ie/sites/default/files/publications/files/technical_guidance_document_b_fire_safety_volume_2_dwelling_houses.pdf

Yes many of the provisions apply I think if the 3 storey was constructed in compliance. I guess my fear was a 2 storey being converted into a 4 storey.

In a compliant 3 storey dwelling, then it should be a simp,e case of extending the existing provisions vertically.but it can come down to the height of that 4th floor and if it breaks the 7.5m barrier.

1.3.4 (c)“ an alternative escape route by way of an escape stairway should be provided from each storey which has a floor 7.5 m or more above the ground or access level. Where the access to the alternative escape route is by way of the protected stairway, the protected stairway at or about 7.5 m above ground or access level should be separated from the lower storeys or levels by fire resisting construction;(see Diagram 4)”

DOCARCH

I live in a 4 storey (new build) house and we have two separate staircases from third to fourth storey.