Re: [RE-wrenches] 2018 Residential Code Fire Setbacks

If you read the section carefully, it reads on both sides of "a" horizontal ridge. It does not read "each" or "all'" horizontal ridges. I know that this interpretation has worked in some jurisdictions in Florida. On many hip roofs, there could be several horizontal ridges. It could be interpreted o

Re: [RE-wrenches] 2018 Residential Code Fire Setbacks

It looks like Virginia is indeed on the amended 2018 version of the IRC. I've found that UpCodes is pretty cool (normally I just use the California codes since that's where we work): https://up.codes/codes/virginia I think that article that Rick pointed to was talking about the 3' pathways requir

Re: [RE-wrenches] 2018 Residential Code Fire Setbacks

Rick: I think this is a state by state issue. From this article : “Building codes vary from state to state and between jurisdictions.” In all jusrisdictions in my part of California, the local Fire Marshal is the fi

Re: [RE-wrenches] 2018 Residential Code Fire Setbacks

18" setback at the ridge, assuming <33%. Doesn't matter what's on the other side of the ridge. For hips (not ridges), we are usually allowed to take advantage of the "other side" as long as there is a 36" path in total (eg, 6" on one side of the hip, and 30" on the other side). Blake On Wed, Ju

[RE-wrenches] 2018 Residential Code Fire Setbacks

Wrenches, Looking for some guidance on setbacks at ridge for PV systems. The 2018 code states the following: R324.6.2 Setback at ridge. For photovoltaic arrays occupying not more than 33 percent of the plan view total roof area, not less than an 18-inch (457 mm) clear setback is required on bo