Fire Sprinklers Alternative For Vaulted Ceiling Without Attic

Nfpa 13 installation of sprinkler systems the standard for the installation of automatic sprinkler systems never specifically addresses whether or not an attic requires sprinkler protection.

Fire sprinklers alternative for vaulted ceiling without attic.

The starting point to determining if attics require sprinkler protection is section 8 1 which basically says to protect all spaces unless there is a specific exemption somewhere in the standard. The sprinkler deflector orientations investigated were parallel to the inclined roof and parallel to the floor surface. Cation attic sprinklers for protecting attics are fire sprinklers for combus tible and non combustible sloped attic spaces. Appendix a tfp610 figure 20.

I have a roof with no attic space in the living room and experience radiant heat coming through the ceiling in the summer. Unheated attic spaces to cover sprinkler piping completely with insulation. Generally if they are not fuel fired units you do not provide sprinklers in the ceiling space. Ceiling clearances applied distance from top of storage to ceiling were 10 feet and 20 feet.

Actuation of the ceiling sprinklers expected from a 3 dimensional growing fire load which is the most likely case of an accidental fire is 8 9 mw and that from a 2 dimensional plane pan fire is expected. The 3mm glass bulb pendent sprinklers with a k factor of 4 9 5 8 for pendent and 4 4 for horizontal sidewall permit the efficient use of residential water supplies for sprinkler coverage in residential fire protection design. Attics with or without storage 01. Areas must be separated by a minimum of 15 feet 4 6 m by an area protected by bb sd or hip sprinklers in order to be considered separate.

The sprinkler types that were studied included quick response ordinary temperature standard response and high temperature sprinklers. For individual areas requiring more than four ap sprinklers the maximum area of attic protected by ap sprinklers is limited to 3000 ft2 279 m2 in any sin gle area. Ceiling piping cannot be used. If they are fuel fired units they are a source of fuel and a source of heat.

Gotta get sprinklers up there then. The low flow f1 res sprinklers are specially engineered. Figures have been added to the standard to illustrate the insulation practice using tenting insulation as an acceptable alternative to antifreeze. It depends on the type of unit.

Would it make more sense to just install a metal roof to prevent the radiant heat penetration. My roofing contractor can install shingles and add more insulation on that portion of the roof but the cost is high.