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Re: notes. codes. etc regarding school-1997
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2180 North Shore Drive - 10-117-23-31-0098
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Re: notes. codes. etc regarding school-1997
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Last modified
8/22/2023 3:24:58 PM
Creation date
10/3/2017 12:13:07 PM
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x Address Old
House Number
2180
Street Name
North Shore
Street Type
Drive
Address
2180 North Shore Drive
Document Type
Correspondence
PIN
1011723310098
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r. <br /> / � � �/ `''� ��G'�-b-/ �o � <br /> �� ur:sic�:v�i�Ki>,�cfifs 13—fi5 <br /> added to standpipe demand as determinrd h�c�m NFPA 14, thr. ltazarrl in h'i�ure �-2.3 or the rtrea ��rotected bv � sprin.klers, <br /> iStan�lru�d for the/nslullation of Jtandpipe anrl Ho.se Systems. ruhicicez�er is �n-euter. Exlended coverage spnnklers shall Ge listed <br /> Esc'eptioia ;Vo. 1: W7�ere lhe combi�ted .s�iri�ekler sti�stem devu�nd �2�h arul rlesigrnrcl for llte mirti�nu.m flow corresponding to che den- <br /> and/�ose streu�n alloruuncr o Table �-2.�exceeds the re uiremen[s sity for the snu�lle.ct�irea of operation for the/u�zr�rd us s�ecifted in <br /> of NFPA 14, Standarrl for the/nstallulio�t of Stan�lpipe and Hose Ftgure J-2.3. <br /> Systenu, this higher rlenu�ttd s/anll be wed. 5-2.3.2.4 Where listed yuick-response spnn lers are used <br /> Exception No.2: For�u:tinllc�h�7nklered hulldings,lhe sprinkler �hroughout, the system area of operation is permitted to be <br /> demand, not including kose strea�n n.11orui��ace,as indicated in Table I•educed without revising the density as indicated in Figure <br /> ( � 5-2.3 shall be added lo the requireinents given in NFPA 14, Stan- j-2•3.2.4 when all of the following conditions are satisfied: <br /> � dard for the/nstallntiat of Standpipe and Hose Systems. Wet pipe syste►n <br /> (� Water allowance for outside hose shall be added to the Light hazard or ordinary hazard occupancy <br /> sprinkler and inside hose requirement at the connection co 20-foot(9.0-m) maximum ceiling height. <br /> the city water main,or a yard hydrant,whichever is closer to <br /> the system riser. The number of sprinklers in the design area shail never <br /> (g) The lower duration values in Table�-2.3 shall be per- be less than five. <br /> � mitted where remote station or central station waterflow <br /> alarm service is provided. ao • <br /> (h) Where pumps,gravity tanks,or pressure tanks supply <br /> sprinklers oniy, requirements for inside and outside hose m <br /> need not be considered in determining the size of such � 3 Z,S <br /> pumps or tanks. v, 30 <br /> .N <br /> 5-2.3.1.4 Total system water supply requirements shall be � . <br /> detrrmined in accordance with the hydraulic calculation � <br /> procedures of Section 6-4. ° 20 <br /> U <br /> 5-2.3.2 Area/Density Method. � <br /> 5-2.3.2.1 The water supply requirement for sprinklers c <br /> only shall be calculated from the area/density curves in Fig- � �Q <br /> ure 5-2.3. The calculations shaU satisfy any single point on a <br /> the appropriate area/density curve as follows: <br /> /\ (a) Light Hazard.�rea/Density Curve 1 <br /> (b) Ordinary Hazard (Group 1)Area/Density Curve 2 <br /> (c) Ordinary Hazard(Group 2)Area/Density Curve 3 ' <br /> i <br /> (d) Extra Hazard (Group 1)rlrea/Density Curve 4 �0 ���-ti 20 30 <br /> � (e) Extra Hazard (Group 2)rlrea/Density Curve 5. Ceiling height,ft y( '': x-� = y� <br /> It is not necessary to meet atl points on the selected curve. Note: +55 <br /> y=2x � <br /> 5-2.3.2.2 For protection of storage up to 1`L ft (3.6 m) in — - Z t s,_ <br /> height,the following shall be applicable: For ceiling height?10 ft and<_20 tt,y=�+55; - <br /> For ceiling height<10 ft,y=40; * S S <br /> Commodity Classes I through IV 3 Z,� ' <br /> For ceilin g hei ght>20,y=0. <br /> For SI units: 1 ft=0.31 m. <br /> Commodity Classification Palletized and Bin Box Rack <br /> I OH-! OH-1 Figure5-2.3..4 <br /> � II up co 8 fc(2.4 m) OH-1 UH-1 5-2.3.2.5 The 'system area oF operation shall be increased <br /> j � II over 8 ft(2.4�n) by 30 percent without revising the density when [he follow- <br /> �. � up co I2 ft(3.6 m) OH-2 OH-2 �ng types of sprinklers are used on sloped ceilings with a <br /> III OH-2 OH-2 <br /> IV up co 10 ft(3 m) OH-2 OH-2 p�tch exceeding 2 in.in 12 in. (50 mm in .3 m): <br /> IV over 10 ft(3 m)�0 12 fc(3.6 m) OH-2 EH-1 Standard Spray Upright <br /> 5-2.32.3 The densides and areas provided in Figure 5-2.3 Standard Spray Yendent <br /> are for use oniy with spray sprinklers. For use with other Sidewall Spray <br /> � types of sprinklers,see Section 5-3. Large Drop. <br /> � <br /> Exception No. 1*: Qui�k-response sprinklers shall rtot be pennitlr;l 5-2.3.2.6 ' For dry pipe systems and double interlock preac- <br /> for rue mith Curues 4 und 5(Extra H�izrerd). tiun systems, the area oF sprinkler operation shall be <br /> Exref�tiou No. 2: SidewnU sprav sprinklers shul[he pennitted for increasrd by:SO prrcent withuut revising the density. <br /> use mitle.9rea/Ueruity Cun�r 1 (Li{rhl H«u[rd)und, if sperif:call� 5-2.3.2.7 Whrre high temperature sprinklers are used for <br /> listed, wilh Area/Density Cun�rs 2 ur 3((hdinary Hazarrl). Extra Hazard Occupancies, the area of sprinkler operation <br /> l ExcepCintt No. 3: For exlendrd r.overage sprinklexc, lhr rainimum shall br permitted to be reduced by 25 percent without <br /> � ( desigrt area s/uill be t/u�t correspondi�tg�o thr. rnu.ximum de�esity f or revising the dens�ty,b�u nut t<�less than 2000 sy ft(186 m=). <br /> 1996 Edition <br />
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