2804 GRAND AVE EVERETT PUBLIC MARKET 2018-01-02 MF Import

3. Exit Euclosures xil Encicsures Sec. 3301. (a) General. Every interior stairay, ramp o, escalatorsM0 be enclosed as specified in this section. EXCEPTIONS: 1. In other than Group I Occupancies. an enclosu:e *a not be required for a stairway, ramp or escalator serving snly one a:j ;rr floor and not eonnaled with corridors or stairways scrvin t other rloon.lm erclesure o f escalators serving Group L Occupancies, sce C::apter 17. 2. Stairs in Group R. Division 3 Occupancies and stairs within indi.ild apartments in Group R. Division 1 Occupances need not be enclosed. 3. Stairs in open parking garages, as defined in Section 709, need ra N enclosed. (b) Enclosure. Construction. Enclosure walls shall be of not less this two-hour fire-res:Vive eonitruction in buildings more that, four storin u Night and shall be of not less than one -hour fire -resistive construclin elsewhere. (c) Openings into Enclosures. There shall be no openings into ts3 enclosures elcent exit doorways 3r.d openings in extcricr walls. X! ell doors in an exit enclosure shall be protected by a fire assembly hasirf s fire-protec:ion rating or not less than one huur %hers one -hour shall cv� structio.s is permitted and one and one-half hours wnere two-hour stub eonstructien is required. Doors shall be maint2ired self-c!-sins ors _,IN automatic closing by actuation of a ;mokc detector as pro••ided roe in ete. tion 4306 (b). The maximum trnnsmiaed temp;;ature ems point stall ma excced 450'r. above ambient at the end of 30 minutes of :ne fire extascrr q.r•,ified in U.F.C. Standard No.43-2. rd) Ilment of Enclosure. Stairway and ramp erdosur, shai', ;,•.!legs and prrts of floors connecting stairway flights and ssa'.I also in- d.lc a corridor on tie ground Floor Icadirg from the stairway to the ex- etG,r or the building. Enclosed corridors or passageways arc net rccui; eel 6.n ur.crcicscd stairways. Every opening into the corridor shall comply .••.P. the:cgcir--rants of Section 3303 (c). EXCEI'TIO.V: In office bed,lings dos;ed as a Group L•, Gss,:ua c Oc- cupancy, a maximum or 5o percent of the exits may s:ischarge throeoh a socet Soor lobby. prosid'd the required exit width is rrce and unobstructed ar'ih.,crirestreel floor is protected wi:bar.z somatic sprinkle syste-. (e) fisrrler.:: st3i1w-2y in an exit enclos2rc shall not continue below the psi_ Iacl exit unless an approved barrier is provided at the Erourd Floor sr'd to prc•,ust persons L-otn accidentally continuing into the ba52mcnt. Ip Use or Space tinder Stair. These shag be no enclosed usable spar_ r ::ai v: 1 it, 2r. exi7 errtrure nor shall she Oren spur under such sv:,waysba u .,d for any purpose. The hTE stairtaay from the basement roust be enclosed continuously until it discharges into the 4E stairway enclosure or to the outside directly.