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Old 02-04-2011, 02:06 PM
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sphelps sphelps is offline
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Not sure what the rating is, the drywall is just standard fire rated 1/2". Building inspector just said I need a fire ring around the drain. He hummed and hawed about it so I don't think it's a huge deal but I can't just use the fire rated sealant, has to be the metal ring/donut.
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Old 02-04-2011, 05:33 PM
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Got what I needed from Hilti, thanks all!.

I have to laugh at these building inspectors though. Basically I have to install fire rated drywall on the inside of a basement exterior wall because that side of the house is 2-5 cm too close to the property line, despite the fact that the distance between houses on that side of the house is actually 2-3 feet greater than the other side. Next the drywall has to be installed all the way from the basement floor to the sub-floor on the main level meaning I have to notch the drywall to fit between the joists. OK but the joists are web shaped so filling them completely will be difficult but the inspector says it doesn't have to fill the web and just has to butt up against the top and bottom courts. However the drain from the shower will have to protrude through the drywall section between two of the joists so I have to use this special fire ring and sealant to complete enclose the gap to special fire requirements yet there is a 1.5" open gap on each side where the drywall means the joists. Correct me if I'm wrong but this makes no sense and I'm pretty sure the inspector knows very little about what he's doing.

Last edited by sphelps; 02-04-2011 at 05:36 PM.
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Old 02-04-2011, 05:48 PM
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The inspector is technically wrong, the drywall has to follow the cut of the web of the joists, there is a way around that, but it would go well beyond the discussion here. I spent way too much time figuring these details out for the inspectors.

As for the fire rated exterior wall, it has to do with the property line, not where the other house is, as silly as it sounds, it is a good requirement.
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Old 02-04-2011, 07:59 PM
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Oh I understand the rules and agree with them to a point but we're talking about a 2-5 cm range which in average is only 1 inch short. Based on the fact that there is more than sufficient spacing between houses overall, that building extensions goes against community policies and sheds have to be located in back yard (so it's impossible to shorten the overall distance unless the neighbors house is torn down and rebuilt wider), and that my house if fully sprinklered there is no way I'm putting anyone at more risk than the average house in the city. I've talked to a few people who were granted relaxations for much worse conditions and all the county requires for my relaxation is permission from the building inspector who obviously doesn't know that much on this particular issue or subject. Hence if I don't laugh at him I'd probably do something much worse
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Old 02-04-2011, 09:40 PM
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if I was down there I would help you out with some of the issues.. That is what I do. Sometimes inspectors do not know the ins & outs of the code. Heck sometimes I don't know the ins & outs. And the code is always open to interpetation it seems.
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