Attic conversion steel

househero

Is steel always required when converting an attic in a 2 story house.

Has anyone had steel put in? No idea of the cost.

My house is 11m wide gable to gable, the roof floor is 11m with a 9m span (5m to hip walls). Block built, including all internal walls up to roof floor level.

Gumbo

Attic conversions can be done with steel or timber. But both methods require structural engineers design, inspection and sign off.

Don’t forget about the rest of the fire regulations required.

drunkmonkey

Think it depends on what rafters are there if they can handle the weight, probably not if it wasn't built with the idea of converting it.

Cost me 2.5k installed for the steel running the whole way around the house, can't remember the exact dimensions I'll see can I dig it out later, it's a 5bed bungalow on the bottom.

househero

drunkmonkey wrote: »

Think it depends on what rafters are there if they can handle the weight, probably not if it wasn't built with the idea of converting it.

Cost me 2.5k installed for the steel running the whole way around the house, can't remember the exact dimensions I'll see can I dig it out later, it's a 5bed bungalow on the bottom.

It's all already done (the conversion) when it was built. I just don't see any steel and was wondering if it was legit.

Fire boarded and plastered, linked alarms, escape windows, 2.9m peak height, fire doors with auto closures (annoying).

There was something stopping it from being classed as habitable as it was sold as 'storage'. But was clearly being used as a top floor bedroom with a walk in wardrobe and ensuite.

drunkmonkey

Could be numerous reasons, the height regulations might have stopped them going for planning even if they done everything by the book.

Trying to get retention if there selling it could delay things. Just as handy call it storage.

If the frame can't handle the weight you might notice the roof is sagged a bit would be one obivious way to see how it's looking.

Only person really knows is the owner.

househero

drunkmonkey wrote: »

Could be numerous reasons, the height regulations might have stopped them going for planning even if they done everything by the book.

Trying to get retention if there selling it could delay things. Just as handy call it storage.

If the frame can't handle the weight you might notice the roof is sagged a bit would be one obivious way to see how it's looking.

Only person really knows is the owner.

No saggy bits on the old bird thankfully

Could have been the retention thing.

Im having a heat recovery system put in with forced air ventilation. Anything I should know?

All I have is part F from 2009 http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,1647,en.pdf these still relevant???

Any links to new regs on attic conversions??

Gumbo

househero wrote: »

No saggy bits on the old bird thankfully

Could have been the retention thing.

Im having a heat recovery system put in with forced air ventilation. Anything I should know?

All I have is part F from 2009 http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,1647,en.pdf these still relevant???

Any links to new regs on attic conversions??

yes, your engineer will decide on the best place to place the unit.
Considering there’s no steel, it’s possible the timbers are sized smaller as they will all be working together so best to place it correctly.

Also, as with any piece of plant, add a smoke detector into the location where the unit is place to warn in advance of any possible fire / smoke spread.

The attic regulations are not new. You have to piece together sections from part B, part F, part A and Part K to name but a few. You are looking for the loft conversion sections or 3 storey versions.

househero

kceire wrote: »

.

The attic regulations are not new. You have to piece together sections from part B, part F, part A and Part K to name but a few. You are looking for the loft conversion sections or 3 storey versions.

Thanks, so the relevant regs are from 09 and haven't been updated.

Yes we have two hvacs in on each floor and will be adding in the top floor one when we come to renovate up there, smaller units that didn't breech the ceiling fire guard and can control each floor independently. They all have the relevant steel sheething on corners, self seal valves through structural walls and smoke alarms in the voids, all linked in to each other and a IFTTT system that turns off the units if the alarm is triggered. Don't like the idea of turbo flames.

Gumbo

househero wrote: »

Thanks, so the relevant regs are from 09 and haven't been updated.

Yes we have two hvacs in on each floor and will be adding in the top floor one when we come to renovate up there, smaller units that didn't breech the ceiling fire guard and can control each floor independently. They all have the relevant steel sheething on corners, self seal valves through structural walls and smoke alarms in the voids, all linked in to each other and a IFTTT system that turns off the units if the alarm is triggered. Don't like the idea of turbo flames.

No.
Part B 2017 for example.
Have you checked that the other TGD ‘s haven’t been updated?

househero

kceire wrote: »

No.
Part B 2017 for example.
Have you checked that the other TGD ‘s haven’t been updated?

No I was looking for a link to the new regs so I can check

BryanF

househero wrote: »

No I was looking for a link to the new regs so I can check

http://www.housing.gov.ie/housing/building-standards/tgd-part-d-materials-and-workmanship/Technical-guidance-documents

Gumbo

househero wrote: »

No I was looking for a link to the new regs so I can check

What ‘new’ regs are you talking about?

mad m

@Kceire

When you convert an attic what’s the height for when it’s classed a habitable room?

Is it 2.1 or more?

BryanF

househero wrote: »

All I have is part F from 2009 http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,1647,en.pdf ?

P11

Gumbo

mad m wrote: »

@Kceire

When you convert an attic what’s the height for when it’s classed a habitable room?

Is it 2.1 or more?

Page 11, Diagram 3.

http://www.housing.gov.ie/sites/default/files/migrated-files/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad%2C1647%2Cen.pdf

househero

Thinking about options to support large opening in planned summer house.

I was looking at concrete cast Vs steel rsj when it dawned on me it could be possible and preferably to match the original building with it's granite block and humongous oak beams instead. Well, granite cladding at least.

Has anyone used oak beams instead of steel RSJs?

BryanF

Yes

househero

BryanF wrote: »

Yes

Useful post as ever Bryan.

BryanF

househero wrote: »

Useful post as ever Bryan.

https://www.boards.ie/vbulletin/showthread.php?t=2055036302

See section 1.5

BryanF

Threads merged

Calahonda52

househero wrote: »

Useful post as ever Bryan.

The question was

househero wrote: »

Has anyone used oak beams instead of steel RSJs?

The answer was
Yes.
so why the ah-esque answer.
Note to self: another one for the ignore list