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Exccption No. Sr S¢r(�klerrs:sluall�t he r��tedrd�l to meet Tn6le 4-18 Specla}Siniations. ' � ` ; •
<br /> ; :,. ..,. ,,, ;.
<br /> A-11.$.12 wkere dhe sprinkler d�f lgtto�s arg leusl 2 f! (61 U►►+an) 4-lg.l Concealed 5 aces.
<br /> herrizri�tally frem diu� riearast edge nf nny nhetrucci�ms up tv 2 ft� ....��, ..P. • �
<br /> (610 mm)wida that are docaled below!wo o�mo�e adjacent sprsn- 4-13,1.1' A.II'concealed spaces enclosed wholly or pardy by
<br /> klsrs,inclwli�g dlago�e¢Lly. �
<br /> expose�3,c�mhus[ible construction shall be protected by
<br /> 4-11.5.5�2 Spririklers inetalled under open gratings shall spnnklers. � ,, ,
<br /> ba nf thc intermcdiatc l�veUrack seorag� typc or uthcrwise
<br /> shielded.from P.hc:ditcr.harge of overhead�prinklers. Excep�ion No. 1: Cuneealed�paeet j'urmed by studs or joists wtith
<br /> le.as tlui-rt Fi i+t.(152+ta+n)GBhuetd»lkK i�tsidt or n�ar edges of the studs
<br /> �������������������������������������������������������i v�vjouW.(See Fdgure 4-h.4.1.�.) .�.
<br /> Ceiling • � Exc�p�zon No. 2: Gv�lcsale�l sj�aces fa►�ned Uy 6ar jouts ruitl6 fess•
<br /> than 6 in.(1,52 m�►�)he�uRr.�,th�mof nr fl,00r deck n�nd c�tilin�g.
<br /> CxcepCdon No, 3: Concealed s�caces jorrrurd by ceilings attachsd
<br /> 2a In.(610 mm)or more directly tn nr v�itJri-n fi i►i.(I52 m�►n)qf ruvOd jou6 f�n��li�6wtd-
<br /> Exce�Cinn No. �; Conce.nled sfia.ces fmmed by ceidtings.attached
<br /> I�r�yrY� b directly to lh�undcr,sid�nf r,mnt�n.ttte wrMd��ict f�4slnu;Cion,�mvidBd �
<br /> O O O O th�Joul clmn�tvls are f irestopped into volumes each not exceeding
<br /> L60 ft3(4.53�m')using�rru�t�rruel�crJ�civul�.0�u 11�e web cwcs�rucdirre.
<br /> �(Exr.rp�tion Nn.5: Go�rArp«lerd s�iuces en.{�rr.ly ftlled zuiGh no�cutnLus-
<br /> Plpe,condult, tibla insulaCian.
<br /> or}I,cture
<br /> a �' �xr.��ttion No. 6: GU1dCdQId�L Sfi)f4CBS U/1GIN16 U�UOC��Ul,�L C01Gi{�'kCdbO'►b
<br /> and rnm�in.ritd wvucl joist ca�utruc�ion Judvi•ng��onco+�a6��scible�nsu-
<br /> lalinn filling tJ�o,.t�fmcc fr�v+n�he ceili+t,g�c�i l.0 Ehe h��Glum edge uf tl�e
<br /> Figuro4-t1.5.3 06euvctionoutirolyholowtltedprinWer(L+Sl�kaprin4ler). ;UiSt of the roof or floor.dech, Prauirled tluat iti r.o>►a�io.cite z�nnd jnise
<br /> r.���>�,rt�Y.u:[iun tl�e jv�G cha���e1 ureJ�Tr�e�p��d x��u volu�rs r�:l�n��
<br /> 411.6 Clearence tu 6toeage (Early Suppression Fa�t- exeeed{ng.16U f��(4,53�rn3),'!'he juisls shull be fireslu�trf�ed lo lhe full
<br /> Reeponse SprinWers). The cleal':�nce between Ct�e deflecwr tletith uf thc joist with ntateticcl equivale�iE Eo lhe uieb co�nsCnecEion,
<br /> and the top of storage shall be 91i in.(914 in�n)or b•real.cr- Gxception No. 7.�'' Con.cealed spaces over uolated s�null rooms noe
<br /> �:xr.eeding,55 ft�(4:6 ma)in aren,
<br /> 4-12 In-Rack Spr�nklers. 1:'xr,pf�tio�i Nn. N: Wl��r�ri.�d�nuc�e.rials u.rr. �ua•r.d.a+�cl tl�r. rx��i�sr.d
<br /> 4-12,1 Syatem Size. 'l he area pmtectrd by a singIc system su�rf'aces huve a flame spread r¢tin,�n�25 m�les.s nnd the matRyiaLs
<br /> of'sprinklers ia�racks shall noc cxcccd 40,000 ft�(37 I ti ml)of laave 6�e�t demo��wl-ruG�d nul Gu�ru�uguCe Jire in che f orm in ruhich
<br /> Eluor area occupiec�by the racks,inch�ding aisles, re�ar�lcss tl�ey u•re i�u�tecllcd in lhe space,
<br /> of thc num6er of levels of in-rar.k s�irinklers. Exr.r,�ittie,�►i Np. 9: Gur�cralecl s�iuces in which.lhe ex�iusecl niateriuls
<br /> 4-12.2 Cirotriil Valvc�. Whcre sprinklers are inst.alled in uYe consh�ucted e�ttir�ly of jire-retardalat�r��ueel wnod a.e dr�>�ed Gy
<br /> racks,sc:pa��a�� inclicati�►g contml valves and drains shall be NrPA 703, Standard./or F'ire lteeardane hnprc,�nnted Wond nnil�
<br /> E�x•��vidr.d fi�r�tili«g sprinkl,ers and sprinklers «i racks. . F'ere I{elardunl CouEings f'ar Duilding Material�.
<br /> Exce�ilian Nu. l; In-raek installalim�s qf'20 br,fezuer sptinklers. �'xr.et�tiu�a No. .1 U; Noncom6.ustiblc to�acealed spaces Aavin,q
<br /> e�posed eomh��stihl�ire,etiluliun ruler,rr. Ihr. hea! eonle�.t uf�lhr fiacting
<br /> L'xce�ilion Nu, 2; The,se�¢rate indticaC6t�g vicelve shr�ll be�iermitled und su6sCrate nf the i�uulatio�macg���cl does�Got exced�l I DUU Btu
<br /> lo be a�ra�t�ed as sectional cnn6rol valves where the racks ncr,u�y �Pr f�`(ll 35h k//►na).
<br /> rrnly n�nrCion of tl�e area�rrnlecte[1 by ceilinq sprinklpTs.
<br /> 4-lY.� Type of Sprinklers. In-rack s��rinklcrs shall bc ordi- 4-13.1.2 Sprinkle:rs in cn�u,r�slr.tl sl��icr.� Ii�vin� np �c�ttis
<br /> n:iry temperature�/��r or►�/sl-in,(12.7-qr 18.:'i-�ntn)spritaklers., for s[or�gt ur•vthcr usc shall bc installcd in aceorclancc with
<br /> the requic�euizca�s for Ligh[Hazard Occupancy.
<br /> 4.12.4 I,ocac�on of in•Rack Sprinklers.
<br /> -- --•• 4-13,1,8 Whcrc heac�prt�t3licing deviccs such as furnaces __
<br /> -�-� ��M�t2.4,1���A ►ni�u�uu�u G-in_ (15'?-ii►m)�verrirar r.lear s�ace �r pi�ocess ec.liiipinent are�ocated in the joiai clia�ii�s aliuvc�
<br /> sh�ll be maintained becweeu�hc sprinkler defle.ctor and the a ceiling atlaclar.d dir�ccly tu thc unrlcrsidc uf composite
<br /> top tier oEstorage. wnc�d joist construction that would not otherwise require
<br /> 4I2.�,Q The: maxiinur�� spacing betwr.c�n sprinklers shatl sprinkler prn[ecci�n of�he spaccs,l�tr.jois�chan�ir.�con�ain-
<br /> he Ip kt(;�,U5 tn). �ng chc heat-producin� devices ghall be sprinklered hy
<br /> instdllinq sprinklers��each joise channel,on each side,adja-
<br /> 4•12.4.3 S�rinlclers sf►��I L�e Iui:a�t;('J in'CiAi19VEi9C��UB 9(�aC@9, c.ent lo thc h�at•producing device.
<br /> 41,2.4.4 In-rack sprinklcrs shall be lirc;nlc�l a�thc tirst ticr
<br /> ,levc�al or above on�-half of the stora�e hci�f►l. 4-19.2 Ver�icel Sh�tfts.
<br /> 4.12.4.5 Whcn sprinklers arc installed ir� rack�, dittcrcnt 4=13.2.1 nne sprinkler shall be installed ac tt�c tup of shafrs,
<br /> di3tan�cs nf cicflccwrs abuve the bottom �F horicuntal rack
<br /> fsxcr. dz.u�� No, 1; Noncom6usti6le nr limi�ed-r.vmhu.setble, nnnac-
<br /> supportg shall be perxiaiue�l wl�cn water disn•ihution tescs � �'
<br /> onstrate essentially ct�u���ilr.n�. clibtributr n to that'er.g cictt�-, I s'rr3i�r ver�ical dud slraf'ts. ' ical sha ts.
<br /> complet�wuh stnra�c cy�nm�ciity above che srrink l
<br /> ohr.ain�d F.xcr. d�on No, 2; No�aco�nhusc�hlr m�lt�ntted-crm�hustrGl�, •iu>nur.-
<br /> with cLstane:es ns�pecihed in Table�-G.�.l.l. cessible vr.rlse.�al r.lecEr�cal or mechan
<br /> i�rf �. � �e O ..
<br /> 1998 Edition
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