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Correspondence but /? -002_6/? vv SW 7L 'Sl7 BRUCE PEARSON SEP 11 . 2017 FIRE PROTECTION CI t Y vF CONSULTANT&DESIGN �11itCtr;,, 4EPf. l, 2©r7 Lest/E InvgC? beifie /441 ,. of 28r i " f PEs Odes .0, , 413 Fog I.M.1.41z. GA z acceive/ S is d�/nlc50 15 Naeve77vnl f C/Iii lgg 01.16-&" �eo liF-A1 rs 4426 MoDORAIZ To ,c,//Gll Ala 14111/ e sroc Mt e©ni,L tars w/Th/ A10 lif 44.111 ©V'delfr&Igoe At; Nor iXcEeD 12'diLN ' Ac f©vQJD /II efliofero s 1,44,4a4y141 3-Z Qe 7Y6 eoDg. • k©Aliens ©F aims' 2 svt"t4 AS "foo- TOE �N e/Wj Bv, y 6©,1. 5 � E cf, d As Clg 3 A p 114 • :v r , P©N rhiNE2, snit mils olv t 1 Tit ©/*. dtAz. 4A 2 Sr 71141 MS hve ST0116E vA /Z'�l�G�1 Eire A411,-rjza Ak /N ,446 )pe Imes ( ACee°T41, S7/40LF LO-Ve-ZS SrgoertJAw c,r4, 1d BE vile.71/ Mt�T,dl bcJ/2E rYP,E. 0N6E rge s'rBM4E Excg04 /Z; 771671/ r ,cr�AA/& -Rds foL il/411 / /(oh sTv,e,QrE A4 DEf/n1i /ii 3.9.1, 13 Ad/AA, if 'ac ' sly I fl—n INSTALLATION OF SPRINKLER SYSTEMS 3-9.1.11 Free,Floa ing Plastic Materials. Those plastics that 3.9.2.5* Pile Stability, Unstable Piles. Those arrays where fall out of their containers during a fire,fill flue spaces,and collapse, spillage of contents, or leaning of stacks across create a smothering effect on the fire.Examples include pow- flue spaces occurs soon after initial fire development. der,pellets,flakes,or random-packed small objects [e.g.,ra- zor blade dispensers,1 oz to 2 oz(28 g to 57 g)bottles]. 3.9.2.6 Shelf Storage. Storage on structures up to and in- cluding3.9.1.12 High-Challenge Fire Hazard. A fire hazard typical 30 in. (762 mm) deep with shelves usually 2 ft storage. (0.6 m) apart vertically and separated by approximately of that produced by fires in combustible high-piled 30 in. (762 mm) aisles. 3.9.1.13 -Piled Storage.torngt. Solid-piled, palletized, rack 3.9.2.7 Solid Unit Load of a Nonesrpanded Plastic(Either Car, storage,bin box,and shelf storage in excess of 12 ft(3.7 m) in height. toned or Exposed). A load that does not have voids (air) 3.9.1.14* Miscella►reous Storage. Storage that does not ex- within the load and that burns only on the exterior of the teed 12 ft 3.66 m load;water from sprinklers might reach most surfaces avail- ( ) in height and u incidental to another able to burn. occupancy use group.Such storage shall not constitute more than 10 percent of the building area or 4000 ft2 (372 m2) of 3.9.3 Rack Storage. the sprinklered area,whichever is greater.Such storage shall not exceed 1000 ft2(93 m2)in one pile or area,and each such 3.9.3.1*Aisle >GfTiahh The horizontal dimension between pile or area shall be separated from other storage areas by at the face of the loads in racks under consideration.(See Fig- least 25 ft(7.62 m). ureA.3.9.3.1.) 3.9.1.15 Packaging A commodity wrapping,cushioning, 3.9.3.2 Automotive Components on Portable Racks. Automo- or container. tive components on portable racks are defined as the 3.9.1.16 Plastic Pallet. A pallet having any portion of its following: instrument panels, windshields, metal and Plastic gasoline tanks, heater housings,door panels, in- construction consisting of a plastic material. tenor trim, bumper facia,wiring harnesses,sheet metal, 3.9.1.17*Reinforced Plastic Pallet. A plastic pallet incorpo- body components,engines,driveline components,steer- i rating a secondary reinforcing material (such as steel or ing mechanisms, auxiliary motors, and lighting — all fiberglass)within the pallet. with or without expanded plastic donnage. This defini- 3.9.1.18 Roof Height The distance between the floor and don does not include the storage of air bags, tires, and the underside of the roof deck within the storage area. seats on portable racks. 3.9.1.19 Slave Pallet. A special pallet captive to a material- 3.9.3.3 Bulkhead. A vertical barrier across the rack. handling system. (See Figure A.3.9.1.7.) 1.4 3.9.3.4 Face Sprinklers. Standard sprinklers that are lo- 3.9.1.20 Storage Aids. Commodity storage devices,such as cated in transverse flue spaces along the aisle or in the rack, pallets,dunnage,separators,and skids. are within 18 in. (0.46 m) of the aisle face of storage,and 3.9.1.21 Unit Load. Apallet load or module held together are used to oppose vertical development of fire on the ex- in some manner and normally transported by material- handling face of storage. handling equipment. 3.9.3.5 Horizontal Barrier. A solid barrier in the horizontal 3.9.1.22 Wood Pallet A pallet constructed entirely of wood position covering the entire rack,including all flue spaces at with metal fasteners. certain height increments,to prevent vertical fire spread. 3.9.2 Palletized,Solid Pile,Bin Box,and Shelf Storage. 3.9.3.6*Longitudinal Flue Space. The space between rows 3.9.2.1 Army. of storage perpendicular to the direction of loading. (See FigureA.3.9.3.6.) 3.9.2.1.1 Closed Array. A storage arrangement where air movement through the pile is restricted because of 6 in. 3.9'3'7*Rack. Any combination of vertical,horizontal,and (152 m en or less vertical flues. diagonal members that supports stored materials.Shelving in 3.9.2.1.2• some rack structures use shelves that can be solid,slatted,or Open Array. A storage arrangement where air open.Racks can be fixed,portable,or movable.Loading can movement through the pile is enhanced because of vertical be either manual—using lift trucks,stacker cranes,or hand flues larger than 6 in. (152 mm). placement—or automatic—using machine-contrulled stor- 3.9.2.2 BinBox Storage. Storage in five-sidedwood,metal, age and retrieval systems. or cardboard boxes with open face on the aisles.Boxes are self-supporting or supported 3.9.3.7.1 Double-Row Racks. Racks less than or equal to PP° 8 by a structure so designed 12 ft (3.7 m) in depth or single-row racks placed back to that little or no horizontal or vertical space exists around boxes. back having an aggregate depth up to 12 ft (3.7 m),with aisles having an aisle width of at least 3.5 ft(1.1 m)between 3.9.2.3 Palletized Storage. Storage of commodities on pal- loads on racks. lets or other storage aids that form horizontal spaces be- tween tiers of storage. 3.9.3.7.2 Movable Racks, Racks on fixed rails or guides. They can be moved back and forth only in a horizontal, 3.9.2.4 Ptle Stability,Stable Piles. Those arrays where col- two-dimensional plane.A moving aisle is created as abut- - lapse, spillage of content, or leaning of stacks across flue ting racks are either loaded or unloaded, then moved spaces is not likely to occur soon after initial fire development, across the aisle to abut other racks. a ' CLASSIFICATION OF OCCUPANCIES AND COMMODITIES 13-25 Irr- Y' shall be protected in accordance with Chapter 12 and Chapter the area is protected to the higher hazard in accordance with 13 as applicable. the requirements of this standard. 5.3.2*Ordinary Hazard(Group 2).Ordinary hazard(Group 2) 5.6.2 Pallet Types. occupancies shall be defined as occupancies or portions of other occupancies where the quantity and combustibility of contents 5.6.2.1 When loads are palletized, the use of wood or metal are moderate to high,where stockpiles of contents with moder- pallets shall be assumed in the classification of commodities. r ate rates of heat release do not exceed 12 ft(3.66 m)and stock- 5.6.2.2 For Class 1 through Class IV, when unreinforced ' ' piles of contents with high rates of heat release do not exceed 8 ft (2.4 m).Dedicated and miscellaneous storageshall beprotected polypropylenesed, theclassification or cation offsthty polyethylenecommodunit c shall e are used, the classification the commodity unit . be in- in accordance with Chapter 12 and Chapter 13 as applicable. creased one class(e.g.,Class III will become Class IV,and Class IV will become cartoned unexpanded Group A plastics). Un- 5.4 Extra Hazard Occupancies, * reinforced polypropylene or unreinforced high-density poly 5.4.1 Extra Hazard(Group I).Extra hazard (Group 1)occu- ethylene plastic pallets shall be marked with a permanent sym- pan©es shall be defined as occupancies or portions of other bol to indicate that the pallet is unreinforced. occupancies where the quantity and combustibility of con- tents are very high and dust, lint, or other materials are 5.6.2.3 For Class!through Class IV,when reinforced polypropy- present, introducing the probability of rapidly developing lene or high-density polyethylene plastic pallets are used the das- fires with high rates of heat release but with little or no corn- sification of the commodity unit shall be increased two classes except for Class IV commodity,which shall be increased to a car- busdble or flammable liquids. 5.4.2*Extra Hazard(Group 2).Extra hazard (Group2)occu- toned unexpanded Group Aplastic commodity(e.g.,Class II will become Class IV,and Class III and Class IV will become a car- panties shall be defined as occupancies or portions of other toned unexpanded GroupAplastic commodity).Pallets shall be occupancies with moderate to substantial amounts of flam- mable or combustible liquids or occupancies where shieldingassumed rtto be reinforced ifnon-reinforcementnpermanent marking or manufac u of combustibles is extensive.• turer's certification of is provided. 5.6.2.4 For Class I through Class IV when other than polypro- 5.5*Special Occupancy Hazards. pylene or high-density polyethylene plastic pallets are used, 5.6*Commodity Classification.See Section C.2. the classification of the commodity unit shall be determined by specific testing conducted by a national testing laboratory _ i_. 5.6.1 General. or shall be increased two classes. 5.6.1.1*Classification of Commodities. 5.6.2.5 No increase in the commodity classification shall be 5.6.1.1.1 Commoditydassifcation and the corresponding pro- required for Group A plastic commodities stored on plastic ` tection requirements shall be determined based on the makeup pallets. of individual storage units(i.e.,unit load,pallet load). 5.6.2.6 For ceiling-only sprinkler protection, the require- 5.6.1.1.2 When specific test data of commodity classification ments of 5.6.2.2 and 5.6.2.3 shall not apply where plastic pal- by a nationally recognized testing agency are available, the lets are used and where the sprinkler system uses spray sprin- data shall be permitted to be used in determining dassifica- klers with a minimum K-factor of 16.8. tion of commodities. 5.6.2.7 The requirements of 5.6.2.2 through 5.6.2.4 shall not 5.6.1.2 Mixed Commodities, apply to nonwood pallets that have demonstrated a fire hazard that is equal to or less than wood pallets and are listed as such. 5.6.1.2.1 Protection requirements shall not be based on the overall commodity mix in a fire area. 5.6.3*Commodity©asses. 5.6.1.2.2 Unless the requirements of 5.6.1.2.3 or 5.6.1.2.4 are met, mixed commodity storage shall be protected by the re- 5.6.3.1*Class I.A Class I commodity shall be defined as a non- e combustible product that meets one of the following criteria: quirements for the highest classified commodity and storage arrangement. (1) Placed directly on wood pallets (2) Placed in single-layer corrugated cartons, with or without A 5.6.1.2.3 The protection requirements for the lower com- single-thickness cardboard dividers,with or without pallets modity class shall be permitted to be utilized where all of the (3) Shrink-wrapped or paper-wrapped as a unit load with or following are met: without pallets (1) Up to 10 pallet loads of a higher hazard commodity, as 5.6.3.2* Class II.A Class II commodity shall be defined as a described in 5.6.3 and 5.6.4, shall be permitted to be noncombustible product that is in slatted wooden crates,solid present in an arca not exceeding 40,000 ft2(3716 m2). wood boxes, multiple-layered corrugated cartons, or equiva- (2) The higher hazard commodity shall be randomly dis- lent combustible packaging material,with or without pallets. persed with no adjacent loads in any direction (including 5.6.3.3*Class ID. diagonally). (3) Where the ceiling protection is based on Class I or Class II 5.6.3.3.1 A Class III commodity shall be defined as a product commodities, the allowable number of pallet loads for fashioned from wood,paper,natural fibers,or Group C plas- Class N or Group A plastics shall be reduced to five. tics with or without cartons,boxes,or crates and with or with- 5.6.1.2.4 Muted Commodity Segregation.The protection re- out pallets. - quirements for the lower commodity class shall be permitted 5.6.3.3.2 A Class III commodity shall be permitted to contain to be utilized in the area of lower commodity class,where the a limited amount(5 percent by weight or volume or less) of higher hazard material is confined to a designated area and Group A or Group B plastics.