Sasha:
S > I would be really thankful to anyone who could explain clear to me S > where fire stopping are put in basement walls. My township building S > permit requirements say "Fire stopping, which is the blocking off of S > the connection between concealed vertical spaces and concealed S > horizontal spaces (such a furred wall to a ceiling space), is S > required. This is a lot easier to put in before the walls and ceilings S > are constructed." The building permits department clerk gave me a
I think what the paragraph is trying to say is they require a solid between areas. The areas are the vertical areas ("spaces") and horizontal areas. What needs to be done is to have a barrier installed (of of the "") so if there is a fire in the basement (horizontal area) it can't easily travel up the walls (vertical area).
As noted in the permit information, it is easier to install this barrier before the (drywall for the) walls and ceilings is installed: you can get to it without the drywall in the way!
S > booklet with very poor drawing of the basement wall so I can't S > understand where fire stopping piece of drywalls is to be put. I S > thought initially that pieces of 1/2" thick 14 1/2 inches long drywall S > are fastened between wall vertical studs to the bottom of upper S > horizontal wall stud so that fiberglass insulation does not touch S > upper horizontal stud and though it joists. Is it correct? If not S > where does the fire stopping go? Also are fire stoppings required only
I believe the « x 14«" drywall pieces is the firestop. It is acting as a barrier to fire travel. The fiberglass insulation isn't part of the picture. A solid 2x4 cap/header would probably do the same thing. What they want is to have no "air connection" between the walls and ceiling. (The walls are the vertical spaces, the ceiling the horizontal spaces. Their use of "concealed" just means hidden from view; IOW behind the drywall.)
S > for out perimeter walls that have insulation? Are they needed for S > inside partition walls that have no insulation?
Best thing to do would be to have the city inspector approve the construction before the drywall is installed. (The electrical probably needs to be inspected before walls are put up also.) I think there are at least three inspections: (1) blueprints, (2) rough-in (framework [studs and joists] exposed, all the mechanicals installed [plumbing, electrical, HVAC]), (3) sign-off after drywalling is done but before occupancy.
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