Public Input No. 116-NFPA 13-2016 [ Global Input ] · Class I 0.37 15.1 0.33 13.5 Class II 0.44 17.9 0.37 15.1 Class III 0.49 20.0 0.42 17.1 Class IV and Group A Plastics 0.68 27.7

Public Input No. 116-NFPA 13-2016 [ Global Input ]

Make the following changes to Chapter 17 to consolidate in-rack requirements as in FR 317.17.1.7 In-Rack Sprinklers.17.1.7.1 The number of sprinklers and the pipe sizing on a line of sprinklers in racks shall berestricted only by hydraulic calculations and not by any piping schedule.17.1.7.2 When in-rack sprinklers are necessary to protect a higher hazard commodity that occupiesonly a portion of the length of a rack, in-rack sprinklers shall be extended a minimum of 8 ft (2.4 m)or one bay, whichever is greater, in each direction along the rack on either side of the higher hazard.17.1.7.2.1 The in-rack sprinklers protecting the higher hazard shall not be required to be extendedacross the aisle.17.1.7.3 Where a storage rack, due to its length, requires less than the number of in-rack sprinklersspecified, only those in-rack sprinklers in a single rack need to be included in the calculation.17.1.7.4 * In-rack Where in-rack sprinklers are installed in longitudinal flues, they shall be located atan intersection of transverse and longitudinal flues while not exceeding the maximum spacingrules.17.1.7.4.1 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.17.1.7.4.2 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules.17.1.7.4.3 , In-rack sprinklers shall be installed with a minimum 6 in. (152 mm) vertical clear spacebetween the in-rack sprinkler deflectors and the top of a tier of storage. .17.1.7.4.3 17.1.7.4.4 For storage over 25 ft in height17.1.7.4.4.1 In-rack sprinklers in longitudinal flues shall be installed(a) with the deflector located at or below the bottom of horizontal load beams or above or belowother adjacent horizontal rack members, and(b) such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of the rackuprights.17.1.7.4.4.2 17.1.10.2.1 Face sprinklers in such racks shall be located within the rack a minimum of 3 in. (76 mm) from rackuprights and no more than 18 in. (460 mm) from the aisle face of storage.

17.1.10.2 In single-, double-, or multiple-row racks, a minimum 6 in. (152 mm) vertical clear spaceshall be maintained between the in-rack sprinkler deflectors and the top of a tier of storage .17.1.10.2.1 Face sprinklers in such racks shall be located within the rack a minimum of 3 in. (76 mm) from rackuprights and no more than 18 in. (460 mm) from the aisle face of storage.17.1.10.2.2 Such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of therack uprights.17.2.1.5.1 In-Rack Sprinkler Spacing Clearance. The minimum of 6 in. (152 mm) vertical clear spaceshall be maintained between the sprinkler deflectors and the top of a tier of storage.17.2.1.5.2 The spacing of in-rack sprinklers shall be in accordance with Figure 17.2.1.2.1(a) throughFigure 17.2.1.2.1(f).

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

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17.2.1.5.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.Delete A.17.2.1.5.3

17.2.1.5.4 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.17.2.1.5.5 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules.17.2.2.6 In-Rack Sprinkler Requirements Where CMSA Sprinklers Are Used at Ceiling.17.2.2.6.1 In-rack sprinklers shall be installed at the first tier level at or above one-half of the storageheight.17.2.2.6.2 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.17.2.2.6.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues .

Delete A.17.2.2.6.317.2.2.6.4 The maximum horizontal distance between in- rack sprinklers shall be 5 ft (1.5 m).17.2.2.6.5 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.17.2.2.6.6 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules.17.2.3.4.3 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.17.2.3.4.4 The maximum horizontal distance between in- rack sprinklers shall be 5 ft (1.5 m).17.2.3.4.5* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.Delete A.17.2.3.4.517.2.3.4.6 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.17.2.3.4.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules . 17.3.1.9 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between the in-racksprinkler deflectors and the top of a tier of storage.17.3.1.10* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.Delete A.17.3.1.1017.3.1.11 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.17.3.1.12 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspaci1.10.2ng rules.17.3.3.4.2 In-rack sprinklers shall be located at the intersection of the longitudinal and transverseflue space.17.3.3.4.3 Horizontal spacing shall not be permitted to exceed 5 ft (1.5 m) intervals.


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17.3.3.4.4 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.17.3.3.4.5* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.Delete A.17.3.3.4.5 17.3.3.4.6 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.17.3.3.4.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacingrules .

Additional Proposed Changes

File Name Description ApprovedPC_356.pdf 13-PC_356

Statement of Problem and Substantiation for Public Input

This Public Input appeared as “Reject but Hold” in Public Comment No. 356 of the (A2015 cycle) Second Draft Report.

Submitted on behalf of the SSD Redundancy Task Group. These changes are considered editorial and deletes the parts redundant with 17.1.7.4 (see Committee Statement on FR-317). Also added 6” clearance over top of load for all heights. That was not stated in 17.1.9 like it is in 17.1.10.2 but is in each section (17.2.1.5.1 / 17.2.2.6.2 / 17.2.3.4.3).

Submitter Information Verification

Submitter Full Name: TC ON AUT-SSDOrganization: NFPAAffilliation: TC on Sprinkler System Discharge CriteriaStreet Address:City:State:Zip:Submittal Date: Mon May 16 10:18:43 EDT 2016

Committee Statement

Resolution: Due ot reorganization


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Add a new Section 12.1.5

12.1.5 Fire Protection of Steel Columns Within Storage

See Section C.10.

12.1.5.1 Where storage heights are in excess of 15 ft (4.6 m), protection of building columns located whollyor partially within the rack footprint inclusive of flue spaces or within 12 in. (305 mm) of the footprint shall beprotected in accordance with one of the following:

(1) 1-hour fireproofing

(2) In-rack sprinklers

(3) Sidewall sprinklers at the 15 ft (4.6 m) elevation, pointed toward one side of the steel column

(4) Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary 165°F (74°C) orhigh-temperature 286°F (141°C) rated sprinklers as shown in Table 12.1.5.1 for storage heights above15 ft (4.6 m), up to and including 20 ft (6.1 m)

(5) Provision of CMSA or ESFR ceiling sprinkler protection

Table 12.1.5.1 Ceiling Sprinkler Densities for Protection of Steel Building Columns

Commodity Classification

Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)

gpm/ft2 (L/min)/m2 gpm/ft2 (L/min)/m2

Class I 0.37 15.1 0.33 13.5

Class II 0.44 17.9 0.37 15.1

Class III 0.49 20.0 0.42 17.1

Class IV and Group A Plastics 0.68 27.7 0.57 23.2

12.1.5.1.1 Columns within Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage of Class Ithrough Class IV Commodities and Group A Plastics shall not require protection.

12.1.5.2 Where storage heights are in excess of 15 ft (4.6 m) and vertical rack members support thebuilding structure, the vertical rack members shall be protected in accordance with one of the options in12.1.5.1.

12.1.5.2.1 Where rubber tire storage exceeds 20 ft (6.1 m) in height, the vertical rack members shall beprotected by two sidewall sprinklers, one at the top of the column and the other at a 15 ft (4.6 m) level, bothdirected to the side of the column

12.1.5.3 The flow from a column sprinkler(s) shall be permitted to be omitted from the sprinkler systemhydraulic calculations.

12.1.5.4 Where pallets are stored in cut-off rooms, columns shall be protected in accordance with section12.1.5.1 options (1) or (3).

Delete existing sections as follows:

12.12.2.2.4.1 (5)

14.3.6

16.1.4 and its subsections

17.1.4 and it's subsections


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18.2 and it's subsections





This revision is proposed on behalf of the SSD redundancy task group and is considered editorial. Columns protection criteria is currently scattered in Chapters 12, 14, 16, 17 and 18 and all the chapters have essentially the same requirements and exemptions. This text is based off of section 16.1.4. The table requirements from that section were updated to include the requirements from Chapter 17 for Group A plastics and sections appropriate to pallet and rubber tire storage added. This new section consolidates all the requirements in a single section in Chapter 12 as a general requirement.



Committee Statement

Resolution: Due ot reorganization


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Replace Chapter 15 First Draft Text with the following -- move and renumber existing annex materialto match that below.Chapter 15 Protection for Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage ofPlastic and Rubber Commodities15.1 General. This chapter shall apply to palletized, solid-piled, bin box, shelf, or back-to-back shelfstorage of plastic and rubber commodities. The requirements of Chapter 12 shall apply unlessmodified by this chapter.15.1.1* Storage Conditions. The design of the sprinkler system shall be based on those conditionsthat routinely or periodically exist in a building and create the greatest water demand, which includethe following:

1.Pile height

2.Clearance to ceiling

3.Pile stability

4.Array

15.1.2 15.2.4 Group B plastics and free-flowing Group A plastics shall be protected in the samemanner as a Class IV commodity. (See Chapter 14 for protection of these storage commodities withspray sprinklers.)

15.1.3 15.2.5 Group C plastics shall be protected in the same manner as a Class III commodity. (SeeChapter 14 for protection of these storage commodities with spray sprinklers.)

15.2 Protection Criteria for Group A Plastics15.2.1* Control Mode Density/Area Sprinkler Protection Criteria for Palletized, Solid-Piled, Bin Box,Shelf, or Back-to-Back Shelf Storage of Plastic and Rubber Commodities.15.2.1.1 For the storage of Group A plastics stored 5 ft (1.5 m) or less in height, the sprinkler designcriteria for miscellaneous storage specified in Chapter 13 shall be used. The protection criteria inChapter 13 shall be acceptable for storage of Group A plastic commodities up to and including 5 ft(1.5 m) in height. (See Table 13.2.1 for specific Group A plastic storage height protection criteria.)15.2.1.2* Protection for plastic and rubber commodities shall be in accordance with Section 15.2.The decision tree shown in Figure 15.2.1.2 shall be used to determine the protection criteriain eachspecific situation, subject to the following limitations:

1.Commodities that are stored palletized, solid piled, or in bin boxes up to 25 ft (7.6 m) in height.

2.Commodities that are stored in shelf storage up to 15 ft (4.6 m) in height.

3.Commodities that are stored using back-to-back shelf storage up to 15 ft (4.6 m) in height. Theminimum aisle width shall be 60 in. (1524 mm). The design criteria shall be in accordance with Table15.2.2. The back-to-back shelf shall have a full height solid vertical transverse barrier of 3⁄8 in. (9.5mm) plywood or particleboard, 22 gauge sheet metal, or equivalent, from face of aisle to face ofaisle, spaced at a maximum 45 ft (13.7 m) interval. The transverse barrier shall be permitted toterminate at the longitudinal barrier.

Table 15.2.1.2 Back-to-Back Shelf Storage of Cartoned Unexpanded Group A Plastics

Storage Height Ceiling HeightProtection

Ft M ft m


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Storage Height Ceiling HeightProtection

Ft M ft m

Over 5 up to 8 1.5/2.4 Up to 14 4.3 Ordinary Hazard Group 2

Up to 12 3.7 Up to 15 4.6 0.45 gpm/ft2 over 2500 ft2 18.3 mm/min/232 m2



Figure 15.2.1.2 Decision Tree. (Note: Use existing Figure 15.2.2 and change Table references from15.2.6 to 15.2.1.4 (a) and (b))15.2.1.3* Factors affecting protection requirements such as closed/open array, clearance to ceiling,and stable/unstable piles shall be applicable only to storage of Group A plastics. This decision treealso shall be used to determine protection for commodities that are not wholly Group A plastics butcontain such quantities and arrangements of the same that they are deemed more hazardous thanClass IV commodities.15.2.1.4 6* Design areas and densities for the appropriate storage configuration shall be selectedfrom Table 15.2.1.4 6 (a) or Table 15.2.1.4 6 (b) as appropriate.Table 15.2.1.4 6 (a) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (U.S. Customary Units)

Maximum Storage Height

.

(ft)

Roof/CeilingHeight (ft)

Density (g

A B C

>5 to ≤12

Up to 15 0.2 EH2 0.3 E

>15 to 20 0.3 0.6 0.5 E

>20 to 32 0.4 0.8 0.6 0

15

Up to 20 0.3 0.6 0.5

>20 to 25 0.4 0.8 0.6 0

>25 to 35 0.45 0.9 0.7 0

20

Up to 25 0.4 0.8 0.6 0

>25 to 30 0.45 0.9 0.7 0

>30 to 35 0.6 1.2 0.85

25Up to 30 0.45 0.9 0.7 0

>30 to 35 0.6 1.2 0.85

>30 to 35 0.6 1.2 0.85 0.7

Notes:(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained asrequired.(2) Column designations correspond to the configuration of plastics storage as follows: A: (1) Nonexpanded, unstable (2) Nonexpanded, stable, solid unit load B: Expanded, exposed, stable C: (1) Expanded, exposed, unstable


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(2) Nonexpanded, stable, cartoned D: Expanded, cartoned, unstable E: (1) Expanded, cartoned, stable (2) Nonexpanded, stable, exposed(3) EH1 = Density required by Figure 13.2.1 for Curve EH1 EH2 = Density required by Figure 13.2.1 for Curve EH2(4) Roof/ceiling height >35 ft is not permitted.Table 15.2.1.4 6 (b) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (S.I. Units)

Maximum Storage Height

.

(m)

Roof/Ceiling Height

.

(m)

Density

.

(mm/min)

A B C D E

Up to 4.6 8.2 EH2 12.2 EH1 EH2

>1.5 to ≤3.6 >4.6 to 6.1 12.2 24.4 20.4 EH2 EH2

>6.1 to 9.8 16.3 32.6 24.4 18.3 28.5

Up to 6.1 12.2 24.4 20.4 16.3 18.3

4.6 >6.1 to 7.6 16.3 32.6 24.4 18.3 28.5

>7.6 to 10.7 18.3 36.7 28.5 22.4 34.6

Up to 7.6 16.3 32.6 24.4 18.3 28.5

6.1 >7.6 to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

7.6Up to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

Notes:(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained asrequired.(2) Column designations correspond to the configuration of plastics storage as follows: A: (1) Nonexpanded, unstable (2) Nonexpanded, stable, solid unit load B: Expanded, exposed, stable C: (1) Expanded, exposed, unstable (2) Nonexpanded, stable, cartoned D: Expanded, cartoned, unstable E: (1) Expanded, cartoned, stable (2) Nonexpanded, stable, exposed(3) EH1 = Density required by Figure 13.2.1 for Curve EH1 EH2 = Density required by Figure 13.2.1 for Curve EH2(4) Roof/ceiling height >35 ft is not permitted.15.2.1.5 7 The ceiling-only protection criteria specified in Chapter 17 for rack storage of Group Aplastic commodities shall be permitted to be used for solid-piled and palletized storage of the same


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commodity at the same height and clearance to ceiling.15.2.1.6 8* For Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b), the design areas shall be as follows:

1.The area shall be a minimum of 2500 ft2 (232 m2).

2.Where Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b) allow densities and areas to be selected inaccordance with Curve EH1 and Curve EH2 of Figure 13.2.1, any density/area from the curves inFigure 13.2.1 shall be permitted. When selecting a point from the EH1 or EH2 density/area curves ofFigure 13.2.1, the following area reductions shall be permitted:

1.For K-8.0 (115) sprinklers used with Curve EH1, the design area shall be permitted to be reduced by25 percent, but not below 2000 ft2 (186 m2), where high temperature sprinklers are used.

2.For K-11.2 (160) or larger sprinklers, the design area shall be permitted to be reduced by 25percent, but not below 2000 ft2 (186 m2), regardless of temperature rating.

3.For closed arrays, the area shall be permitted to be reduced to 2000 ft2 (186 m2).

15.2.1.7 9* Interpolation of densities between storage heights shall be permitted.

15.2.1.7 9.1 Densities shall be based on the 2500 ft2 (232 m2) design area.15.2.1.7 9.2 Interpolation of ceiling/roof heights shall not be permitted.15.2.1.8 10 For storage of Group A plastics between 5 ft (1.5 m) and 12 ft (3.7 m) in height, theinstallation requirements for extra hazard systems shall apply.15.2.2 3 Control Mode Specific Application (CMSA) Sprinklers for Palletized or Solid-Piled Storage ofGroup A Plastic Commodities.15.2.2. 3.1 Protection unexpanded and expanded commodities shall be in accordance with Table15.2.2 3.1.Table 15.2.2.1 CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storage of Group APlastic Commodities

StorageArrangement

CommodityClass

MaximumStorageHeight

MaximumCeiling/Roof

Height K-Factor/OrientationType ofSystem

Numof DesSprink

ft m ft m

PalletizedCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 25

16.8 (240)

.

Upright

Wet 15

19.6 (280)

.

Pendent

Wet 15

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15

19.6 (280)

. Wet 15


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StorageArrangement

CommodityClass


MaximumCeiling/Roof


Numof DesSprink

ft m ft m

Pendent

30 9.1 35 10.7

19.6 (280)

.

Pendent

Wet 15

35 10.6 40 12.1

19.6 (280)

.

Pendent

Wet 15

Solid piledCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 15

16.8 (240)

.

Upright

Wet 15

19.6 (280)

.

Pendent

Wet 15

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15

19.6 (280)

.

Pendent

Wet 15

30 9.1 35 10.7

19.6 (280)

.

Pendent

Wet 15

35 10.6 40 12.1

19.6 (280)

.

Pendent

Wet 15

PalletizedExposed

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 25

16.8 (240)

.

Upright

Wet 15

25 7.6 30 9.116.8 (240)

. Wet 15


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StorageArrangement

CommodityClass


MaximumCeiling/Roof


Numof DesSprink

ft m ft m

Upright

Cartoned orexposed

expandedplastics

18 5.5 26 7.9

11.2 (160)

.

Upright

Wet 15

16.8 (240)

.

Upright

Wet 15

Solid piled

Cartoned orexposed

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 15

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15

15.3.2 Protection shall be provided as specified in Table 15.2.23.1 or appropriate NFPA standards interms of minimum operating pressure and the number of sprinklers to be included in the designarea.15.2.2.2 3.3 Open Wood Joist Construction.15.2.2 3.3.1 Where CMSA sprinklers are installed under open wood joist construction, their minimumoperating pressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8(240) sprinkler.15.2.2. 3.3.2 Where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 15.2.2 3.1 shallbe permitted to be used.15.2.2.3.4 Preaction Systems. For the purpose of using Table 15.2.2 3.1, preaction systems shall beclassified as dry pipe systems.Note: Separate Comment to move 15.3.5 to Chapter 12.15.3.5 Building steel shall not require special protection where Table 15.3.1 is applied as appropriatefor the storage configuration.15.2.2.4 Early Suppression Fast-Response (ESFR) Sprinklers for Palletized or Solid-Piled Storage ofGroup A Plastic Commodities.15.2,2.4.1 Protection of palletized and solid-piled storage of cartoned or exposed, expanded orunexpanded plastic and cartoned expanded or exposed expanded plastic shall be in accordancewith Table 15.2.2.4.1.Table 15.2.2.4.1 ESFR Protection of Palletized and Solid-Piled Storage of Group A PlasticCommodities

StorageArrangement Commodity


MaximumCeiling/Roof

HeightNominalK-Factor Orientation

MinimumOperatingPressure

ft m ft m psi bar

Palletized andsolid-piled storage(no open-topcontainers)

Cartonedunexpanded

plastic20 6.1 25 7.6

14.0

.

(200)

Upright/pendent 50 3.4


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*Applies to closed array storage only.15.4.2 ESFR Sprinkler systems shall be designed such that the minimum operating pressure is notless than that indicated in Table 15.4.1 for type of storage, commodity, storage height, and buildingheight involved.15.4.3 The design area shall consist of the most hydraulically demanding area of 12 sprinklers,consisting of four sprinklers on each of three branch lines.15.2.2.4.4 Special Designs for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group A PlasticCommodities. (Reserved)Note: Separated Comment to Consolidate all high-exansion foam sections into Section 12.11.15.5 High-Expansion Foam — Reduction in Ceiling Density. A reduction in ceiling density to one-halfthat required for Class I through Class IV commodities, idle pallets, or plastics shall be permittedwithout revising the design area, but the density shall be no less than 0.15 gpm/ft2 (6.1 mm/min).





Submitted on behalf of the SSD Redundancy Task Group. Location has meaning and context. Information from the Chapter Title and Section Headings does not need to be repeated throughout the Chapter There is no need to reference the sprinkler type. storage type or commodity unless the section only applies to a subset. Revised numbering to be consistent with the format of Chapters 16 and 17. Other changes to eliminate redundancy.



Committee Statement

Resolution: This was submitted prior to the reorganization effort. The concerns have been addressed by theCommittee during the reorganization process.


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(PI-399) 16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(PI-400) 16.2.3.2 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless thesolid shelf racks are protected with in-rack sprinklers in accordance with 16.1.6 . Where solid shelves areused, in-rack sprinklers shall be installed in every level below the highest solid barrier.

(PI-401) 16.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(PI-402) 16.3.3.2.1 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(FR-219) 17.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR0220) 17.2.3.1.2 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR-222) 17.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR-224) 17.3.3.1.1 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unlessthe solid shelf racks are protected with in-rack sprinklers in accordance with 17.1.5. Where solid shelves areused, in-rack sprinklers shall be installed in every level below the highest solid shelf.





The redundancy task group agrees with this comment. This comment addresses Correlating Committee Note 4 on the use of Open Rack and Note 11 on consistency This comment simply deletes the offending text that conflicts with the classification of open criteria for section 16.2, 16.3, 17.2, and 17.3. This criteria addresses two issues. One is that CMSA and ESFR can be applied when solid shelving is present provided the criteria of 16.1.6 or 17.1.5 is also applied. This criteria is already stated for ESFR in 8.4.6.1.1. PC-81 will add this same text to 8.4.7 on CMSA. The second issue from the deleted criteria is that in-rack sprinklers shall be installed at every level below the highest level. This is addressed by PC 78 and 93 which puts this criteria in 16.1.6 and 17.1.5. Sections 16.2, 16.3, 17.2, and 17.3 are for open racks (synonymous to without solid shelving). In order to emphasis a change in philosophy or at least something never stated, one section (17.3.3.1.1) was added in the 2013 edition to clarify that ESFR could be used with solid shelving. We added it to 17.3 that historically has always been open rack criteria thinking what can it hurt. Now we’ve added similar criteria to all sections on CMSA and ESFR. This has rightly resulted in a challenge that 16.2, 16.3, 17.2, and 17.3 should no longer be called criteria for open racks. This is indeed a valid statement. Instead of throwing out what has always been known as open rack criteria, lets locate the miniscule amount of criteria that is not for open racks in section 8.4 and the general section for solid shelf racks where it rightly belongs. When Solid shelving for any type of system appears, it’s addressed in the general sections 16.1.6 and 17.1.5. Although this section does not say for spray sprinklers, that is the current


13 of 969 11/14/2016 9:13 AM

understanding since it wasn’t until the 2013 edition that it was identified that it also applies equally to ESFR and CMSA. This merits discussion as to whether additional text showing that 16.1.6 and 17.1.5 applies to CMSA and ESFR is warranted. Considering that this will be stated in 8.4.6 and 8.4.7 and that the suggested text on design criteria states all three types of sprinklers, that it is easily understood without any additional text.



Committee Statement

Resolution: See action on PI 115


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Make the following changes to Section 16.2 to eliminate redundancy and duplicatetext.

16.2 Protection Criteria for Open Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height.

16.2.1 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage of Class IThrough Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.1.1

The area and density for the hydraulically remote area and the water supply shall be determined asspecified in 16.2.1.2 for storage up to 12 ft (3.7 m) and 16.2.1.3 to 16.2.1.3.5 for storage over 12 ft (3.7 m).

16.2.1.2 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Storage Upto 12 ft (3.7 m) in Height.

16.2.1.2.1 The protection criteria for storage up to and including 12 ft (3.7 m) shall be the same asmiscellaneous storage from Chapter 13.

16.2.1.2.2 The protection criteria in Chapter 13 shall be acceptable for storage of Class I through Class IVcommodities up to and including 12 ft (3.7 m) in height. (See Table 13.2.1 for specific Class I through ClassIV storage height protection criteria.)

16.2.1.2.3 For storage 12 ft (3.7 m) or less in height that does not meet the definition of MiscellaneousStorage that is on solid shelf racks, in-rack sprinklers shall be provided in accordance with 16.1.6, andceiling sprinkler protection shall be provided in accordance with Chapter 13.

16.2.1.3 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored StorageOver 12 ft (3.7 m) in Height.

16.2.1.3.1*

Ceiling sprinkler water demand shall be determined in accordance with 16.2.1.3.2 for single- anddouble-row racks or 16.2.1.3.3 for multiple-row racks. (See Section C.14.)

16.2.1.3.2*

For single- or double-row racks for Class I, Class II, Class III, or Class IV commodities, encapsulated ornonencapsulated in single- or double-row racks , ceiling sprinkler water demand in terms of density[gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling or roof] shall be selected from thedensity/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(g) that are appropriate for eachcommodity and configuration as shown in Table 16.2.1.3.2 and shall be modified as appropriate by16.2.1.3.4 . These requirements shall apply to portable racks arranged in the same manner as single- ordouble-row racks.

Table 16.2.1.3.2 Single- or Double-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25ft (7.6 m)

Height CommodityClass EncapsulatedSprinklersMandatory

In-Rack

Ceiling Sprinkler Wa

Aisles* With In-Rack Sprinklers W

ft m Figure CurvesApplyFigure

16.2.1.3.4.1F

Over 12ft (3.7m) up toandincluding

INo

4 1.2No 16.2.1.3.2(a)

C and D

Yes16.2

8 2.4 A and B

Yes 4 1.2 No 16.2.1.3.2(e) C and D 16.2


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In-Rack




16.2.1.3.4.1F

20 ft (6.1m)

8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.28 2.4 A and B

Yes4 1.2

No 16.2.1.3.2(e)C and D

16.28 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(g)C and D

8 2.4 A and B

Over 20ft (6.1m) up toandincluding22 ft (6.7m)

I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(g)C and D

8 2.4 A and B


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In-Rack




16.2.1.3.4.1F


I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.28 2.4 A and B

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

8 2.4 A and B

IV

No4 1.2

1 level

16.2.1.3.2(d)C and D

8 2.4 A and B

Yes4 1.2

16.2.1.3.2(g)C and D

8 2.4 A and B

*See 16.2.1.3.2.1 for interpolation of aisle widths.

Figure 16.2.1.3.2(a) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class INonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(b) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(c) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IIINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(d) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IVNonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(e) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class I and Class II Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(f) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class III Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(g) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class IV Encapsulated Commodities — Conventional Pallets.

16.2.1.3.2.1*

Design densities for single- and double-row racks shall be selected to correspond to aisle width. (SeeSection C.15.)

(A) For aisle widths between 4 ft (1.2 m) and 8 ft (2.4 m), the rules for 4 ft (1.2 m) aisle width shall be usedor direct linear interpolation between the densities shall be permitted.

(B) The density given for 8 ft (2.4 m) wide aisles shall be applied to aisles wider than 8 ft (2.4 m).


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(C) The density given for 4 ft (1.2 m) wide aisles shall be applied to aisles more narrow than 4 ft (1.2 m)down to 3 ¹⁄2 ft (1.07 m).

(D) Where aisles are more narrow than 3 ¹⁄2 ft (1.07 m), racks shall be considered to be multiple-row racks.

16.2.1.3.3 Multiple-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m).16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m) with Aisles 8 ft (2.4m) or Wider.For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, c C eilingsprinkler water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) ofceiling or roof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure16.2.1.3.2(d) that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.1and shall be modified as appropriate by 16.2.1.3.4 . These requirements protection criteria shall apply toportable racks arranged in the same manner as multiple-row racks.

Table 16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m), Aisles 8 ft (2.4 m)or Wider and Storage Height Over 12 ft (3.7 m) Up to 25 ft (7.6 m)

Height CommodityClassEncap-

sulated

SprinklersMandatory

In-Rack

Ceiling Sprinkler Water De

With In-Rack Sprinklers Wit

Figure CurvesApplyFigure

16.2.1.3.4.1

1.25 ×Density Figure


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c

Yes 1 level 16.2.1.3.2(c) Yes

IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d

Yes 1 level 16.2.1.3.2(d) A and B 1.50 ×density


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c


NAIV

No

1 level

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A nd B 1.50 ×density


INo No 16.2.1.3.2(a)

C and D No

No 16.2.1.3.2(a

Yes 1 level 16.2.1.3.2(a) YesNA

II No 1 level 16.2.1.3.2(b) No


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sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


25 ft (7.6m)

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A and B 1.50 ×density

NA: Not applicable.

16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles More Narrow Than 8 ft(2.4 m).For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, C c eilingsprinkler water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) ofceiling or roof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure16.2.1.3.2(g) that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.2and shall be modified as appropriate by 16.2.1.3.4. These requirements protection criteria shall apply toportable racks arranged in the same manner as multiple-row racks. (Move to 16.1 and delete fromindividual sections)

Table 16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles Narrower Than 8 ft (2.4m), Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m)


sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1



INo

No

16.2.1.3.2(a)

C and D Yes

No 16.2.1.3.2(a

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b

IIINo 16.2.1.3.2(c) No 16.2.1.3.2(c


IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d

Yes 1 level 16.2.1.3.2(d) 1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D Yes

No

NAYes 16.2.1.3.2(a) Yes

II No 16.2.1.3.2(b) No


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sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


20 ft (6.1m)

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No 16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) 1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D No

No

NA

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) 1.50 ×density

NA: Not applicable.

16.2.1.3.3.3 Where Class I, Class II, and Class III commodities are encapsulated, ceiling sprinklerdensity shall be 25 percent greater than for nonencapsulated.

16.2.1.3.3.4 Where Class IV commodities are encapsulated, ceiling sprinkler density shall be 50percent greater than for nonencapsulated.

16.2.1.3.4 Ceiling Sprinkler Density Adjustments.16.2.1.3.4.1 For storage height over 12 ft (3.7 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers only and for storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m)protected with ceiling sprinklers and minimum required in-rack sprinklers, densities obtained fromdesign curves shall be adjusted in accordance with Figure 16.2.1.3.4.1.

Figure 16.2.1.3.4.1 Ceiling Sprinkler Density vs. Storage Height.

16.2.1.3.4.2 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers and minimum required in-rack sprinklers, densities obtained from design curvesshall be used. Densities shall not be adjusted in accordance with Figure 16.2.1.3.4.1.

16.2.1.3.4.3 For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected withceiling sprinklers and with more than one level of in-rack sprinklers, but not in every tier, densitiesobtained from design curves and adjusted in accordance with Figure 16.2.1.3.4.1 shall be permittedto be reduced an additional 20 percent, as indicated in Table 16.2.1.3.4.3.

Table 16.2.1.3.4.3 Adjustment to Ceiling Sprinkler Density for Storage Height and In-Rack Sprinklers

StorageHeight

In-RackSprinklers

Apply Figure16.2.1.3.4.1 forStorage Height

Adjustment

Permitted Ceiling SprinklersDensity Adjustments Where

In-Rack Sprinklers AreInstalled


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StorageHeight

In-RackSprinklers

Apply Figure16.2.1.3.4.1 forStorage Height

Adjustment

Permitted Ceiling SprinklersDensity Adjustments Where

In-Rack Sprinklers AreInstalled

Over 12 ft (3.7m) through 25 ft(7.6 m)

None Yes None


Minimum required Yes None

More thanminimum, but notin every tier

Yes Reduce density 20% from that ofminimum in-rack sprinklers

In every tier Yes Reduce density 40% from that ofminimum in-rack sprinklers


Minimum required No None

More thanminimum, but notin every tier

No Reduce density 20% from that ofminimum in-rack sprinklers

In every tier No Reduce density 40% from that ofminimum in-rack sprinklers

16.2.1.3.4.4 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers and with more than the minimum required level of in-rack sprinklers, but not inevery tier, densities obtained from design curves shall be permitted to be reduced 20 percent, asindicated in Table 16.2.1.3.4.3. Densities shall not be adjusted in accordance with Figure16.2.1.3.4.1 for storage height.

16.2.1.3.4.5* For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected withceiling sprinklers and in-rack sprinklers at each tier, densities obtained from design curves andadjusted in accordance with Figure 16.2.1.3.4.1 shall be permitted to be reduced an additional 40percent, as indicated in Table 16.2.1.3.4.3.

16.2.1.3.4.6* For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected withceiling sprinklers and in-rack sprinklers at each tier, densities obtained from design curves shall bepermitted to be reduced 40 percent, as indicated in Table 16.2.1.3.4.3. Densities shall not beadjusted in accordance with Figure 16.2.1.3.4.1 for storage height.

16.2.1.3.4.7 Where solid, flat-bottom, combustible pallets (slave pallets) are used with storageheight up to and including 25 ft (7.6 m), the densities that are indicated in the design curves shownin Figure

16.2.1.3.2(a) through Figure 16.2.1.3.2(g), based on conventional pallets, shall be increased 20percent for the given area.

(A) The percentage shall be applied to the density determined in accordance with 16.2.1.3.4.

(B) The increase in density shall not apply where in-rack sprinklers are utilized in the design.

16.2.1.3.5 Solid For solid shelf rack storage , Table 16.2.1.3.2 shall be used toestablish the density/area criteria and in-rack sprinklers shall be installed inaccordance with 16.1.6. In-rack sprinkler rules consolidated in 16.1.8- check tosee if this has been deleted.

16.2.1.4 In-Rack Sprinklers for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected withControl Mode Density/Area Sprinklers at Ceiling.

16.2.1.4.1 In-Rack Sprinkler Location for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height .

16.2.1.4.1.1 In single- or double-row racks, in-rack sprinklers shall be installed in accordance withTable 16.2.1.3.2.

16.2.1.4.1.2 In multiple-row racks no deeper than 16 ft (4.9 m) with aisles 8 ft (2.4 m) or more in


21 of 969 11/14/2016 9:13 AM

width, in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.3.1.

16.2.1.4.1.3 In multiple-row racks deeper than 16 ft (4.9 m) or with aisles less than 8 ft (2.4 m) wide,in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.3.2.

16.2.1.4.1.4 In-rack sprinklers at one level only for storage up to and including 25 ft (7.6 m) highshall be located at the first tier level at or above one-half of the storage height.

16.2.1.4.1.5 In-rack sprinklers at two levels only for storage up to and including 25 ft (7.6 m) highshall be located at the first tier level at or above one-third and two-thirds of the storage height.

16.2.1.4.2 In-Rack Sprinkler Spacing for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected byControl Mode Density/Area Sprinklers at the Ceiling.

16.2.1.4.2.1* Maximum horizontal spacing of in-rack sprinklers in single- or double-row racks up toand including 25 ft (7.6 m) in height shall be in accordance with Table 16.2.1.4.2.1.

Table 16.2.1.4.2.1 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Single-or Double-Row Racks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/AreaSprinklers at the Ceiling

Commodity Class

Aisle Widths I and II III IV

Encapsulated ft m ft m ft m ft m

No 8 2.4 12 3.7 12 3.7 10 3.0

No 4 1.2 12 3.7 10 3.0 10 3.0

Yes — — 8 2.4 8 2.4 8 2.4

16.2.1.4.2.2* Maximum horizontal spacing and maximum area of coverage of in-rack sprinklers onbranch lines, in multiple-row racks with storage up to and including 25 ft (7.6 m) in height, shall be inaccordance with Table 16.2.1.4.2.2.

Table 16.2.1.4.2.2 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored inMulti-Row Racks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers atthe Ceiling

Commodity Class

I, II, III IV

Spacing Area Spacing Area

ft m ft2 m2 ft m ft2 m2

12 3.7 100 9.3 8 2.4 80 7.4

(A) The rack plan view shall be considered in determining the area covered by each sprinkler.

(B) The aisles shall not be included in area calculations.

16.2.1.4.2.3* The elevation of in-rack sprinkler deflectors with respect to storage shall not be aconsideration in single- or double-row rack storage up to and including 20 ft (6.1 m) high. (SeeSection C.16.)

16.2.1.4.2.4* In single- or double-row racks without solid shelves with storage over 20 ft (6.1 m)high, or in multiple-row racks, or in single- or double-row racks with solid shelves and storage heightup to and including 25 ft (7.6 m), a minimum of 6 in. (152 mm) vertical clear space shall bemaintained between the in-rack sprinkler deflectors and the top of a tier of storage.

(A) Sprinkler discharge shall not be obstructed by horizontal rack members.

16.2.1.4.2.5 For multiple-row racks, a minimum of 6 in. (152 mm) shall be maintained between thein-rack sprinkler deflector and the top of a tier of storage.

16.2.1.4.2.6 Sprinklers installed in racks shall be spaced without regard to rack uprights. (SeeSection C.17.)


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16.2.1.4.3 In-Rack Sprinkler Water Demand for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by Control ModeDensity/Area Sprinklers in the Ceiling. See Section C.18.

16.2.1.4.3.1 The water demand for sprinklers installed in racks shall be based on simultaneousoperation of the most hydraulically remote sprinklers as follows:

(1) Six sprinklers where only one level is installed in racks with Class I, Class II, or Class III commodities

(2) Eight sprinklers where only one level is installed in racks with Class IV commodities

(3) Ten sprinklers (five on each two top levels) where more than one level is installed in racks with Class I,Class II, or Class III commodities

(4) Fourteen sprinklers (seven on each two top levels) where more than one level is installed in racks withClass IV commodities

16.2.1.4.3.2 Where a storage rack, due to its length, requires less than the number of in-racksprinklers specified in 16.2.1.4.3.1 (1) through 16.2.1.4.3.1 (4), only those in-rack sprinklers in asingle rack shall be included in the calculation.

16.2.1.4.4 In-Rack Sprinkler Discharge Pressure for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by Control ModeDensity/Area Sprinklers at the Ceiling. Sprinklers in racks shall discharge at not less than 15 psi (1bar) for all classes of commodities. (See Section C.19.)

16.2.2 CMSA Sprinklers Protection Criteria for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height.16.2.2.1 Protection of single-, double-, and multiple-row rack storage for Class I through Class IVcommodities shall be in accordance with Table 16.2.2.1.

Table 16.2.2.1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IVCommodities (Encapsulated and Nonencapsulated) Stored Up to and Including 25 ft (7.6 m) inHeight

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

OrientationType ofSystem

Numberof DesignSprinklers

MinimuOperatinPressur

ft m ft m psi ba

Single-,double-, andmultiple-rowracks (noopen-topcontainers)

Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.

Dry 25 25 1.

16.8 (240)Upright

Wet 15 10 0.

Dry 25 15 1.

19.6 (280)Pendent Wet 15 16 1.

25 7.6 30 9.1

11.2 (160)Upright

Wet 20 25 1.

Dry 30 25 1.

16.8 (240)Upright

Wet 15 10 0.

Dry 30 15 1.

19.6 (280)Pendent Wet 15 16 1.

Class III20 6.1 30 9.1 11.2 (160)Upright

Wet 15 25 1.

Dry 25 25 1.


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/




ft m ft m psi ba

16.8 (240)Upright

Wet 15 15 1.

Dry 25 15 1.

19.6 (280)Pendent Wet 15 16 1.

25 7.6

30 9.1

11.2 (160)Upright

Wet 15 1 level ofin-rack 25 1.

Dry 25 1 level ofin-rack 25 1.

16.8 (240)Upright

Wet 15 22 1.


19.6 (280)Pendent Wet 15 16 1.

35 10.6

11.2 (160)Upright



16.8 (240)Upright



19.6 (280)Pendent Wet 15 25 1.

40 12.1 19.6 (280)Pendent Wet 15 30 2.

Class IV

20 6.1

25 7.6

11.2 (160)Upright Wet 15 50 3.

16.8 (240)Upright Wet 15 22 1.

19.6 (280)Pendent Wet 15 16 1.

30 9.1

11.2 (160)Upright Wet

20 50 3.

15 75 5.

16.8 (240)Upright Wet 15 22 1.

19.6 (280)Pendent Wet 15 16 1.


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/




ft m ft m psi ba

25 7.6

30 9.1


15 1 level ofin-rack 50 3.

16.8 (240)Upright Wet 15 22 1.

19.6 (280)Pendent Wet 15 16 1.

35 10.6







19.6 (280)Pendent Wet 15 25 1.

40 12.1 19.6 (280)Pendent Wet 15 30 2.

16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installedin every level below the highest solid shelf.

16.2.2.2 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinkler spacing,design pressure, and hydraulic calculation criteria shall be in accordance with the requirements of16.2.2.7 as applicable for the commodity .

16.2.2.3 Protection shall be provided as specified in Table 16.2.2.1 or appropriate NFPA standardsin terms of minimum operating pressure and the number of sprinklers to be included in the designarea.

16.2.2.4 Open Wood Joist Construction.

16.2.2.4.1 Where CMSA sprinklers are installed under open wood joist construction, their minimumoperating pressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for aK-16.8 (240) sprinkler.

16.2.2.4.2 Where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 16.2.2.1 shallbe permitted to be used.

16.2.2.5 Preaction Systems.

For the purpose of using Table 16.2.2.1, preaction systems shall be classified as dry pipe systems.

16.2.2.6 Building steel shall not require special protection where Table 16.2.2.1 is applied asappropriate for the storage configuration.

16.2.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Upto and Including 25 ft (7.6 m) in Height Protected with Control Mode Specific Application Sprinklersat the Ceiling.

16.2.2.7.1 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinklers shall beinstalled at the first tier level at or above one-half of the storage height.

16.2.2.7.2 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the


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sprinkler deflectors and the top of a tier of storage.

16.2.2.7.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues.

16.2.2.7.4 The maximum horizontal distance between in-rack sprinklers shall be 8 ft (1.5 m).

16.2.2.7.5 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, and additionalsprinklers shall be installed between transverse flues to meet the maximum distance rules.

16.2.2.7.6 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspacing rules.

16.2.2.7.7 In-Rack Sprinkler Water Demand.

The water demand for in-rack sprinklers shall be based on simultaneous operation of the mosthydraulically remote eight sprinklers.

16.2.2.7.8 In-Rack Sprinkler Discharge Pressure.

In-rack sprinklers shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (SeeSection C.19.)

16.2.3* Early Suppression Fast-Response (ESFR) Protection Criteria Sprinklers for Rack Storageof Class I Through Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height .

16.2.3.1 Protection of single-, double-, and multiple-row rack storage of Class I through Class IVcommodities shall be in accordance with Table 16.2.3.1.

Table 16.2.3.1 ESFR Sprinkler Protection of Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height



MaximumCeiling/Roof



ISp

Reqft m ft m psi bar

Single-row,double-row, andmultiple-rowracks (noopen-topcontainers)

Class I, II, III, orIV, encapsulated

ornonencapsultated

20 6.1

25 7.6

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)pendent 25 1.7

25.2

(360)Pendent 15 1.0

30 9.1

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)Pendent 25 1.7

25.2

(360)Pendent 15 1.0


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MaximumCeiling/Roof



IS


35 10.7

14.0

(200)

Upright/

pendent75 5.2

16.8

(240)

Upright/

pendent52 3.6

22.4

(320)Pendent 35 2.4

25.2

(360)Pendent 20 1.4

40 12.2 or12.1

16.8

(240)Pendent 52 3.6

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 25 1.7

45 13.7

14.0

(200)Pendent 90 6.2

16.8

(240)Pendent 63 4.4

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 40 2.8

25 7.6

30 9.1

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)Pendent 25 1.7

25.2

(360)Pendent 15 1.0

32 9.8

14.0

(200)

Upright/

pendent60 4.1

16.8

(240)

Upright/

pendent42 2.9


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MaximumCeiling/Roof



IS


35 10.7

14.0

(200)

Upright/

pendent75 5.2

16.8

(240)

Upright/

pendent52 3.6

22.4

(320)Pendent 35 2.4

25.2

(360)Pendent 20 1.4

40 12.2 or12.1

16.8

(240)Pendent 52 3.6

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 25 1.7

45 13.7

14.0

(200)Pendent 90 6.2

16.8

(240)Pendent 63 4.4

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 40 2.8

16.2.3.2 ESFR s Sprinklers shall not be permitted to protect storage on solid shelf racks unless thesolid shelf racks are protected with in-rack sprinklers in accordance with 16.1.6.

16.2.3.2.1 Where solid shelves are used, in-rack sprinklers shall be installed in every level belowthe highest solid shelf.

16.2.3.3 ESFR sSprinklers shall not be permitted to protect storage with open top containers.

16.2.3.4 ESFR sSprinkler systems shall be designed such that the minimum operating pressure isnot less than that indicated in Table 16.2.3.1 for type of storage, commodity, storage height, andbuilding height involved.

16.2.3.5 The design area shall consist of the most hydraulically demanding area of 12 sprinklers,consisting of four sprinklers on each of three branch lines.

16.2.3.6 In-Rack Sprinkler Requirements for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Where ESFR Sprinklers Are BeingUsed at the Ceiling .

16.2.3.6.1 Where required by Table 16.2.3.1, in-rack sprinklers shall be installed at the first tier levelat or above one-half of the storage height.

16.2.3.6.2 In-rack sprinklers shall be K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperature sprinklers.


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16.2.3.6.3 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.

16.2.3.6.4 The maximum horizontal distance between in-rack sprinklers shall be 5 ft (1.5 m).

16.2.3.6.5* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flueswhile not exceeding the maximum spacing rules.

16.2.3.6.6 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, and additionalsprinklers shall be installed between transverse flues to meet the maximum distance rules.

16.2.3.6.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspacing rules.

16.2.3.6.8 The water demand for sprinklers installed in racks shall be based on simultaneousoperation of the most hydraulically remote eight sprinklers.

16.2.3.6.9 Each of the in-rack sprinklers described in 16.2.3.6.8 shall discharge at a minimum of 60gpm (227 L/min).

16.2.4 Special Design for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height .

16.2.4.1 Slatted Shelves.

16.2.4.1.1* Slatted rack shelves shall be considered equivalent to solid rack shelves where theshelving is not considered open rack shelving or where the requirements of 16.2.4.1.2 are not met.(See Section C.20.)

16.2.4.1.2 A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft2 (24.5 mm/min)density over a minimum area of 2000 ft2 (186 m2) or K-14.0 (200) ESFR sprinklers operating at aminimum of 50 psi (3.4 bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar),K-22.4 (320) ESFR sprinklers operating at a minimum of 25 psi (1.7 bar), or K-25.2 (360) ESFRsprinklers operating at a minimum of 15 psi (1 bar) shall be permitted to protect single-row anddouble-row racks with slatted rack shelving where all of the following conditions are met:

(1) Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with atemperature rating of ordinary, intermediate, or high and shall be listed for storage occupancies or shallbe K-14.0 (200), K-16.8 (240), K-22.4 (320) ESFR, or K-25.2 (360) ESFR.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and unexpanded) Group A plastics, and exposed (unexpanded) Group Aplastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (51 mm) thick by maximum nominal 6in. (152 mm) wide, with the slats held in place by spacers that maintain a minimum 2 in. (51 mm)opening between each slat.

(4) Where K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice sprinklers are used, there shall be no slattedshelf levels in the rack above 12 ft (3.7 m). Open rack shelving using wire mesh shall be permitted forshelf levels above 12 ft (3.7 m).

(5) Transverse flue spaces at least 3 in. (76 mm) wide shall be provided at least every 10 ft (3.1 m)horizontally.

(6) Longitudinal flue spaces at least 6 in. (152 mm) wide shall be provided for double-row racks.Longitudinal flue spaces shall not be required where ESFR sprinklers are used.

(7) The aisle widths shall be at least 7 ¹⁄2 ft (2.3 m).

(8) The maximum roof height shall be 27 ft (8.2 m) or 30 ft (9.1 m) where ESFR sprinklers are used.

(9) The maximum storage height shall be 20 ft (6.1 m).

(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2 in.(51 mm) spaces between slats, nor shall they be placed on wire mesh shelves.


File Name Description Approved


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PC_342.pdf 13-PC_342



Submitted on behalf of the SSD Redundancy Task Group. Proposed text eliminates duplicate/redundant text and is considered editorial.



Committee Statement

Resolution: Already handled by the reorganization.


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1. Revise section 17.2.3.5.6 to read as follows:

17.2 . 3.5 . 6 The minimum operating pressure shall be either 30 psi (2.0 bar) or 60 psi (4.1 bar) basedupon the applicable storage and ceiling height for the installation as follows:

a) 30 psi (2.0 bar) for storage heights up to 25 ft (7.6 m) with a maximum ceiling height of 30 ft (9.1 m)

b) 60 psi (4.1 bar) for storage heights up to 25 ft. (7.6 m) with a maximum ceiling height of 40 ft (12.2m).

2. Revise section A.17.2.3.5 to read as follows:

A.17.2.3.5 The Fire Protection Research Foundation conducted a series of full-scale fire tests atUnderwriters Laboratories to develop protection criteria for the rack storage of exposed expanded GroupA plastic commodities. The tests are documented in the report, “Protection of Rack Stored ExposedExpanded Group A Plastics with ESFR Sprinklers and Vertical Barriers.” The criteria for exposedexpanded plastics are based on Tests 2, 3, 7 and 8 of the series, which investigated a 40 ft (12.2 m)ceiling with a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklerswith vertical barriers attached to the rack uprights at nominal 16 ft (4.9 m) apart. Vertical barriers of sheetmetal and ³⁄8 -in. plywood were both investigated. In Tests 1 through 6, transverse flue spaces betweencommodities were blocked. Comparing the results of Test 6 with blocked transverse flue spaces and Test7 with no blocking of transverse

flue spaces, the number of operated sprinklers decreased from 11 to 7 and improved suppression of thefire. The criteria for exposed expanded plastics are based on Tests 9 and 10 of the series, whichinvestigated a 30 ft (9.1 m) ceiling with a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklers with vertical barriers attached to the rack uprights at 16 ft (4.9 m) (nominal)apart. Vertical barriers of 3 ⁄8 -in. plywood was investigated.The area limitation between the vertical barriers and aisles indicated in 17.3.3.5.9.2 will limit the depth ofa multiple-row rack arrangement. The hose stream allowance and water supply duration requirementsconsidered the burning characteristics of the exposed expanded plastic commodity that generates a highrate of heat release very quickly, but the commodity involved in the combustion process is then quicklyconsumed after fire suppression or control is achieved.

3. Revise section A.17.3.3.5 to read as follows:

A.17.3.3.5 The Fire Protection Research Foundation conducted a series of full-scale fire tests atUnderwriters Laboratories to develop protection criteria for the rack storage of exposed expanded GroupA plastic commodities. The tests are documented in the report, “Protection of Rack Stored ExposedExpanded Group A Plastics with ESFR Sprinklers and Vertical Barriers.” The criteria for exposedexpanded plastics are based on Tests 2, 3,7 and 8 of the series, which investigated a 40 ft (12.2 m) ceilingwith a range of storage heights. The tests used K-25.2 intermediate-temperature ESFR sprinklers withvertical barriers attached to the rack uprights at nominal 16 ft (4.9 m) apart. Vertical barriers of sheet metaland 3 ⁄8 -in. plywood were both investigated. In Tests 1 through 6, transverse flue spaces betweencommodities were blocked. Comparing the results of Test 6 with blocked transverse flue spaces and Test7 with no blocking of transverse

flue spaces, the number of operated sprinklers decreased from 11 to 7 and improved suppression of thefire.

The area limitation between the vertical barriers and aisles indicated in 17.3.3.5.9.2 will limit the depth of amultiple-row rack arrangement. The hose stream allowance and water supply duration requirementsconsidered the burning characteristics of the exposed expanded plastic commodity that generates a highrate of heat release very quickly, but the commodity involved in the combustion process is then quicklyconsumed after fire suppression or control is achieved.


File Name Description Approved


31 of 969 11/14/2016 9:13 AM

TIA_13_16_1.pdf NFPA TIA 16-1 Log No. 1165


NOTE: This public input originates from Tentative Interim Amendment No. 16-1 (Log 1165) issued by the Standards Council on August 18, 2015 and per the NFPA Regs., needs to be reconsidered by the Technical Committee for the next edition of the Document.


Submitter Full Name: Tc On Aut-SsdOrganization: NFPAAffilliation: TC on Sprinkler System Discharge CriteriaStreet Address:City:State:Zip:Submittal Date: Tue May 17 11:57:19 EDT 2016

Committee Statement

Resolution: FR-781-NFPA 13-2016Statement: NOTE: This public input originates from Tentative Interim Amendment No. 16-1 (Log 1165) issued by

the Standards Council on August 18, 2015 and per the NFPA Regs., needs to be reconsidered by theTechnical Committee for the next edition of the Document.


32 of 969 11/14/2016 9:13 AM



33 of 969 11/14/2016 9:13 AM

1. Revise Table A.5.6.3 to read as follows:

Textile

Materials/Products Cloth; natural fibers; baled Class III

Cloth; synthetic cloth Class IV

Clothing; natural fibers (e.g. wool, cotton) and viscose Class III

Cotton; cartoned Class III

Diapers; cotton or linen Class III

Diapers; plastic or nonwoven fabric; cartoned Class IV

Diapers;plasticornonwovenfabric;plastic-wrapped;uncartonedGroupANonexpan

Fabric; rayon and nylon Class IV

Fabric; synthetic (except rayon and nylon); greater than 50/50 blend

Group A Nonexpanded

Fabric; synthetic (except rayon and nylon); up to 50/50 blend Class III

Fabric;vinyl-coated(e.g.tablecloth)cartoned GroupANonexpan

Fibers; rayon and nylon; baled Class IV

Fibers;synthetic(exceptrayonandnylon);baled GroupANonexpan

Thread or yarn; rayon and nylon; wood or paper spools Class IV

Threador


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yarn;rayonornylon;plasticspools GroupANonexpand

Thread or yarn; synthetic (except rayon and nylon); greater than

50/50 blend; paper or wood spools Class IV


50/50 blend; plastic spools

Thread or yarn; synthetic (except rayon and nylon); up to 50/50 blend; plasticspools

Thread or yarn; synthetic (except rayon and nylon); up to 50/50

Group A Nonexpanded Group A Nonexpanded

blend; wood or paper spools Class III

2. Revise Table A.5.6.4 to read as follows:

Textile

Materials/Products Cloth; synthetic cloth

Diapers; plastic or nonwoven fabric; cartoned

Fabric; rayon and nylon

Fibers; rayon and nylon; baled

Thread or yarn; rayon and nylon; wood or paper spools

Thread or yarn; synthetic (except rayon and nylon); greater than 50/50 blend;

paper or wood spools

3. Revise Table A.5.6.4.1 to read as follows:

Textile

Materials/Products Diapers; plastic or nonwoven fabric; plastic-wrapped; uncartoned Nonexpanded

Fabric; vinyl-coated (e.g. tablecloth); cartoned Nonexpanded

Fabric; synthetic (except rayon and nylon); greater than 50/50

blend Nonexpanded

Fibers; synthetic (except rayon and nylon); baled Nonexpanded

Thread or yarn; rayon or nylon; plastic spools Nonexpanded


50/50 blend; plastic spools Nonexpanded

Thread or yarn; synthetic (except rayon and nylon); up to 50/50

blend; plastic spools


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Nonexpanded


File Name Description ApprovedTIA_13_16_4.pdf NFPA TIA 16-4 (Log No. 1184)


NOTE: This public input originates from Tentative Interim Amendment No. 16-4 (Log 1184) issued by the Standards Council on August 18, 2015 and per the NFPA Regs., needs to be reconsidered by the Technical Committee for the next edition of the Document.


Submitter Full Name: Tc On Aut-SsdOrganization: NFPAAffilliation: TC on Sprinkler System Discharge CriteriaStreet Address:City:State:Zip:Submittal Date: Tue May 17 12:25:48 EDT 2016

Committee Statement

Resolution: FR-764-NFPA 13-2016Statement: NOTE: This public input originates from Tentative Interim Amendment No. 16-4 (Log 1184) issued by

the Standards Council on August 18, 2015 and per the NFPA Regs., needs to be reconsidered by theTechnical Committee for the next edition of the Document.


36 of 969 11/14/2016 9:13 AM


1. Revise Subsection 5.6.3.3 to read as follows:

5.6.3.3* Class III.5.6.3.3.1 A Class III commodity shall be defined as a product fashioned from wood, paper, natural fibers,or Group C plastics with or without cartons, boxes, or crates and with or without pallets.

5.6.3.3.2*A Class III commodity shall be permitted to contain a limited amount (5 percent or less by weight ofunexpanded plastic or 5 percent or less by volume of expanded plastic) of Group A or Group B plastics.

A.5.6.3.3.2 Where the commodity includes a single type of plastic, the five percent limit applies to theunexpanded or expanded type, but not both. For commodities with a mixture of expanded andunexpanded plastics, see 5.6.3.3.3 and the associated figures.

5.6.3.3.3 Class III commodities containing a mix of both Group A expanded and unexpanded plasticsshall comply with Figure 5.6.3.3.3.1 where they are within cartons, boxes, or crates, or Figure

5.6.3.3.3.2 where they are exposed.

2. Revise Figure 5.6.3.4.2 to read as follows:

3. Add a new Figure 5.6.3.3.3.2 to read as follows:


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4. Revise Subsection 5.6.3.4 to read as follows:

5.6.3.4* Class IV.5.6.3.4.1 A Class IV commodity shall be defined as a product, with or without pallets, that meets one ofthe following criteria:

(1) Constructed partially or totally of Group B plastics

(2) Consists of free-flowing Group A plastic materials

(3) Cartoned, or within a wooden container, that contains (greater than 5 percent and up to 15percent by weight of Group A unexpanded plastic.

(4) Cartoned, or within a wooden container, that contains greater than 5 percent and up to 25percent by volume of expanded Group A plastics.

(5) Cartoned, or within a wooden container, that contains a mix of Group A expanded andunexpanded plastics and complies with Figure 5.6.3.3.3.1.

(6) Exposed, that contains greater than 5 percent and up to 15 percent by weight of Group A

unexpanded plastic.

(7) Exposed, that contains a mix of Group A expanded and unexpanded plastics and complies with

Figure 5.6.3.3.3.2.

5.6.3.4.2 The remaining materials shall be permitted to be noncombustible, wood, paper, natural orfibers, or Group B or Group C plastics.

5. Revise Subsection 5.6.4 to read as follows:

5.6.4* Classification of Plastics, Elastomers, and Rubber. Plastics, elastomers, and rubber shall beclassified as Group A, Group B, or Group C.

5.6.4.1* Group A. The following materials shall be classified as Group A: (1) ABS((acrylonitrile-butadiene-styrene copolymer)

(2) Acetal (polyformaldehyde)


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(3) Acrylic (polymethyl methacrylate) (4) Butyl rubber

(5) Cellulosics (cellulose acetate, cellulose acetate butyrate, ethyl cellulose) (6) EPDM(ethylene-propylene rubber)

(7) FRP (fiberglass-reinforced polyester) (8) Natural rubber

(9) Nitrile-rubber (acrylonitrile-butadiene-rubber) (10) Nylon (nylon 6, nylon 66)

(11) PET (thermoplastic polyester) (12) Polybutadiene

(13) Polycarbonate

(14) Polyester elastomer

(15) Polyethylene (16) Polypropylene (17) Polystyrene (18) Polyurethane

(19) PVC (polyvinyl chloride – highly plasticized, with plasticizer content greater than 20percent)(rarely found)

(20) PVF (polyvinyl fluoride)

(21) SAN (styrene acrylonitrile)

(22) SBR (styrene-butadiene rubber)

5.6.4.1.1* Group A plastics shall be further subdivided as either expanded or unexpanded.5.6.4.1.1.1 A Group A expanded plastic commodity shall be defined as a product, with or without pallets,that meets one of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 40 percent by volume of

Group A expanded plastic.

(2) Exposed, that contains greater than 25 percent by volume of Group A expanded plastic.

5.6.4.1.1.2 A Group A unexpanded plastic commodity shall be defined as a product, with or withoutpallets, that meets one of the following criteria:

(1) Cartoned, or within a wooden container, that contains greater than 15 percent by weight of

Group A unexpanded plastic.

(2) Cartoned, or within a wooden container, that contains greater than 25 percent and up to 40percent by volume of Group A expanded plastic.

(3) Cartoned, or within a wooden container, that contains a mix of Group A unexpanded andexpanded plastics, in compliance with Figure 5.6.3.3.3.1.

(4) Exposed, that contains greater than 15 percent by weight of Group

Documents

Public Input No. 116-NFPA 13-2016 [ Global Input ] · Class I 0.37 15.1 0.33 13.5 Class II 0.44 17.9 0.37 15.1 Class III 0.49 20.0 0.42 17.1 Class IV and Group A Plastics 0.68 27.7