First Draft Meeting PPT - NFPA

National Fire Protection Association

1 Batterymarch Park, Quincy, MA 02169-7471

Phone: 617-770-3000 • Fax: 617-770-0700 • www.nfpa.org

M E M O R A N D U M

To: NFPA Technical Committee on Water Spray Fixed Systems

From: Elena Carroll, Project Administrator

Date: December 10, 2015

Subject: NFPA 15 Second Draft TC FINAL Ballot Results (A2016 Cycle)

According to the final ballot results, all ballot items received the necessary affirmative votes to pass ballot.

28 Members Eligible to Vote

2 Not Returned (G. Fadorsen, B. Fisher)

25 Affirmative on All Revisions (K. Bell, J. Streit, J. Sutton with comment)

1 Negative on one or more Revisions (R. Nielsen)

0 Abstentions

According to the final ballot results of the Supplemental Ballot on SR-9, the ballot item received the necessary

affirmative votes to pass ballot.

28 Members Eligible to Vote

6 Not Returned (G. Fadorsen, B. Fisher, J. Maddry, T. Multer, M. Pognant, D. Taylor)

22 Affirmative on Revision

0 Negatives

0 Abstentions

The attached report shows the number of affirmative, negative, and abstaining votes as well as the explanation of

the vote for each second revision.

There are two criteria necessary for each second revision to pass ballot: (1) simple majority and (2) affirmative 2/3 vote. The mock examples below show how the calculations are determined.

(1) Example for Simple Majority: Assuming there are 20 vote eligible committee members, 11 affirmative votes

are required to pass ballot. (Sample calculation: 20 members eligible to vote ÷ 2 = 10 + 1 = 11)

(2) Example for Affirmative 2/3: Assuming there are 20 vote eligible committee members and 1 member did not

return their ballot and 2 members abstained, the number of affirmative votes required would be 12. (Sample

calculation: 20 members eligble to vote – 1 not returned – 2 abstentions = 17 x 0.66 = 11.22 = 12 )

As always please feel free to contact me if you have any questions.

Second Revision No. 9-NFPA 15-2015 [ Detail ]

Add new 6.3.2.2.4:

6.3.2.2.4

Where pipe stands are used to support straight runs of piping or other configurations that are notlooped or are not rigidly supported at the top of the pipe stand in a manner that will resistmovement in all directions, the pipe stands shall be designed in accordance with the requirementsof NFPA 13.

Submitter Information Verification

Submitter Full Name: Sonia Barbosa

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Tue Dec 01 11:00:35 EST 2015

Committee Statement

CommitteeStatement:

NFPA 15 has provided basic guidelines for designing pipe stands to support looped piping for fixedspray systems for years. Language is being added to the 2016 edition of NFPA 13 to provide newguidance for the support of non-looped system piping. Previous editions of NFPA 15 show the use ofhorizontal support arms as common practice within the annex material but no limitations or guidanceare provided on how to properly design them.

Due to the combination of axial and bending stresses imposed on the pipe stands through eccentricloading when using support brackets, it is necessary to limit the allowable heights on smallerdiameter pipe stands. Larger diameter pipe stands were limited by slenderness ratio and not stress.Calculations were used with maximum KL/R values of 300. This mirrors what was allowed by NFPA13. However, the K values used to support the NFPA 15 pipe stand calculations use a value of 1.0.This is based on the assumption that the top of looped pipe stands can be considered to be rigidlybraced in both horizontal directions by the network of system piping in conjunction with the pipe standsupports.

Update associated annex material section numbers to align with new section numbering.

The pipe stand height table in the current edition of NFPA 15 remains valid for axially loaded pipeand therefore remains in the standard. Horizontal support arms were kept to relatively short lengthswhich was necessary to keep the bending stresses within allowable limits. Tables are included in thenew NFPA 15 language to give the required moduli for horizontal support arms in both 12” and 18”lengths. There are also corresponding tables for allowable maximum stand heights for each of thesupport arm sizes.

ResponseMessage:

Ballot Results

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

1 of 26 12/10/2015 10:45 AM

This item has passed ballot

28 Eligible Voters

6 Not Returned

22 Affirmative All

0 Affirmative with Comments

0 Negative with Comments

0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Maddry, James M.

Multer, Thomas L.

Pognant, Matt

Taylor, Dennis W.

Affirmative All

Asp, Roland A.

Bless, Jr., Ralph E.

Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Grove, Jeffrey S.

Hebenstreit, Jeff

Henderson, Scott D.

Linder, Kenneth W.

McCune, Randall A.

Moore, E. Parks

Moore, Jr., David A.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Philbrick, Richard

Ramirez, Edward A.

Streit, James R.

Sutton, Jeffery W.

Victor, Terry L.

Zuspan, Jarrett


2 of 26 12/10/2015 10:45 AM

Second Revision No. 1-NFPA 15-2015 [ Chapter 2 ]

Chapter 2 Referenced Publications

2.1 General.

The documents or portions thereof listed in this chapter are referenced within this standard and shall beconsidered part of the requirements of this document.

2.2 NFPA Publications.

National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471.

NFPA 13, Standard for the Installation of Sprinkler Systems, 2016 edition.

NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection, 2016 edition.

NFPA 22, Standard for Water Tanks for Private Fire Protection, 2013 edition.

NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances, 2016edition.

NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems,2017 edition.

NFPA 30, Flammable and Combustible Liquids Code, 2015 edition.

NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hot Work, 2014 edition.

NFPA 70®, National Electrical Code®, 2017 edition.

NFPA 72®, National Fire Alarm and Signaling Code, 2016 edition.

NFPA 1963, Standard for Fire Hose Connections, 2014 edition.

2.3 Other Publications.

2.3.1 ASME Publications.

American Society of Mechanical Engineers ASME International , Two Park Avenue, New York, NY10016-5990.

ANSI/ ASME B1.20.1, Pipe Threads, General Purpose, 2013.

ASME B16.1, Gray Iron Pipe Flanges and Flanged Fittings, 2010.

ASME B16.3, Malleable Iron Threaded Fittings Classes 150 and 300, 2011.

ASME B16.4, Gray Iron Threaded Fittings Classes 125 and 250, 2011.

ASME B16.5, Pipe Flanges and Flanged Fittings, 2013.

ASME B16.9, Factory-Made Wrought Steel Buttwelding Fittings, 2012.

ASME B16.11, Forged Fittings, Socket-Welding and Threaded, 2011.

ASME B16.18, Cast Copper Alloy Solder Joint Pressure Fittings, 2012.

ASME B16.22, Wrought Copper and Copper Alloy Solder Joint Pressure Fittings, 2013.

ASME B16.25, Buttwelding Ends, 2012.

ASME B36.10M, Welded and Seamless Wrought Steel Pipe, 2004 (reaffirmed 2010) .

ASME B36.19, Stainless Steel Pipe, 2004(R2010) (reaffirmed 2010) .

Boiler and Pressure Vessel Code (BPVC), Section IX, Welding and , Brazing, and Fusing Qualifications,2013 2015 .


3 of 26 12/10/2015 10:45 AM

2.3.2 ASTM Publications.

ASTM International, 100 Barr Harbor Drive, Box C700, West Conshohocken, PA 19428-2959.

ASTM A53/ A53M, Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Weldedand Seamless, 2012.

ASTM A135/ A135M, Standard Specification for Electric-Resistance-Welded Steel Pipe, 2009 (reaffirmed2014) .

ASTM A182/ A182M, Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, ForgedFittings, and Valves and Parts for High-Temperature Service, 2014b.

ASTM A234/ A234M, Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steelfor Moderate and High Temperature Service, 2014.

ASTM A312/ A312M, Standard Specification for Seamless Welded and Heavily Cold Worked AusteniticStainless Steel Pipes, 2014 2015 .

ASTM A536 , Standard Specification for Ductile Iron Castings, 2009 2014 .

ASTM A795/A795M, Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Weldedand Seamless Steel Pipe for Fire Protection Use, 2013.

ASTM B75/ B75M, Standard Specification for Seamless Copper Tube, 2011.

ASTM B88, Standard Specification for Seamless Copper Water Tube, 2009 2014 .

ASTM B251, Standard Specification for General Requirements for Wrought Seamless Copper andCopper-Alloy Tube, 2010.

ASTM D323, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), 2008(reaffirmed 2014) .

2.3.3 AWS Publications.

American Welding Society, 8669 N. W. 36 Street, #130, Miami, FL 33166-6672.

AWS A5.8/A5.8M, Specification for Filler Metals for Brazing and Braze Welding, 2011.

AWS B2.1/B2.1M , Specification for Welding Procedures and Performance Qualification, 2014.

AWS B2.2/B.2.2M, Standard for Brazing Procedure and Performance Qualification, 2010.

2.3.4 IEEE Publications.

IEEE, Three Park Avenue, 17th Floor, New York, NY 10016-5997.

IEEE/ASTM SI-10, American National Standard For Metric Practice, 2012.

IEEE C2, National Electrical Safety Code, 2012.

2.3.5 Other Publications.

Merriam-Webster’s Collegiate Dictionary, 11th edition, Merriam-Webster, Inc., Springfield, MA, 2003.

2.4 References for Extracts in Mandatory Sections.

NFPA 13, Standard for the Installation of Sprinkler Systems, 2016 edition.

NFPA 24 , Standard for the Installation of Private Fire Service Mains and Their Appurtenances, 2016edition.

NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems,2017 edition.

NFPA 30, Flammable and Combustible Liquids Code, 2015 edition.


Submitter Full Name: Chad Duffy


Street Address:

City:


4 of 26 12/10/2015 10:45 AM

State:

Zip:

Submittal Date: Wed Sep 09 12:56:09 EDT 2015

Committee Statement

Committee Statement: Updated SDO names, standard names, numbers, and editions.

Response Message:

Public Comment No. 5-NFPA 15-2015 [Chapter 2]

Public Comment No. 6-NFPA 15-2015 [Section No. 2.3.2]

Ballot Results


28 Eligible Voters

2 Not Returned

26 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Affirmative All

Asp, Roland A.

Bell, Kerry M.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.

Linder, Kenneth W.

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.


5 of 26 12/10/2015 10:45 AM

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Streit, James R.

Sutton, Jeffery W.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett


6 of 26 12/10/2015 10:45 AM

Second Revision No. 3-NFPA 15-2015 [ Section No. 3.3.2 ]

3.3.2* Combustible Liquid.

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C), as determined by the appropriatetest procedures and apparatus set forth in Section 4.4 of NFPA 30 . Combustible liquids are classifiedaccording to Section 4.3 of NFPA 30 . [ 30, 2015] .




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Definitions cannot contain requirements based on other codes, standards or regulations and therequirements must be in the body of the standard, per the NFPA Manual of Style. The committee'sresponse that the definition proposed cannot be enforced is correct and that is the point: NFPAdefinitions are not enforceable, in accordance with NFPA regulations. A change in NFPA 30 wouldnot solve the NFPA 15 issue. The enforceable part of this definition needs to be in the body of NFPA15. This should not be an extract from NFPA 30 but needs to be resolved within NFPA 15.

ResponseMessage:


Ballot Results


28 Eligible Voters

2 Not Returned

25 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Affirmative All

Asp, Roland A.


7 of 26 12/10/2015 10:45 AM

Bell, Kerry M.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.

Linder, Kenneth W.

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Streit, James R.

Sutton, Jeffery W.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett

Negative with Comment

Nielsen, Roz

The word "appropriate" is vague and doesn't provide specific guidance or direction.


8 of 26 12/10/2015 10:45 AM

Second Revision No. 4-NFPA 15-2015 [ Section No. 3.3.11 ]

3.3.11* Flammable Liquid.

Any liquid that has a closed-cup flash point below 100°F (37.8°C), as determined by the appropriate testprocedures and apparatus set forth in Section 4.4 of NFPA 30 , and a Reid vapor pressure that does notexceed an absolute pressure of 40 psi (276 kPa) at 100°F (37.8°C), as determined by ASTM D323,Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method) . Flammable liquids areclassified according to Section 4.3 of NFPA 30 . [ 30, 2015] .




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Definitions cannot contain requirements based on other codes, standards or regulations and therequirements must be in the body of the standard, per the NFPA Manual of Style. The committee'sresponse that the definition proposed cannot be enforced is correct and that is the point: NFPAdefinitions are not enforceable, in accordance with NFPA regulations. A change in NFPA 30 wouldnot solve the NFPA 15 issue. The enforceable part of this definition needs to be in the body of NFPA15. This should not be an extract from NFPA 30 but needs to be resolved within NFPA 15.

ResponseMessage:


Ballot Results


28 Eligible Voters

2 Not Returned

26 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Affirmative All


9 of 26 12/10/2015 10:45 AM

Asp, Roland A.

Bell, Kerry M.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.

Linder, Kenneth W.

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Streit, James R.

Sutton, Jeffery W.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett


10 of 26 12/10/2015 10:45 AM

Second Revision No. 2-NFPA 15-2015 [ New Section after 4.4 ]

4.5 Flammable and Combustible Liquids.

4.5.1

The test procedures and apparatus as set forth in Section 4.4 of NFPA 30 shall be used to assesswhether a liquid is flammable or combustible.

4.5.2

The Reid vapor pressure shall not exceed an absolute pressure of 40 psi (276 kPa) at 100°F (37.8°C),as determined by ASTM D323, Standard Test Method for Vapor Pressure of Petroleum Products (ReidMethod) .

4.5.3

Flammable and combustible liquids shall be classified according to Section 4.3 of NFPA 30 .




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

This added section resolves the issue of the definitions within Chapter 3 that containrequirements coming from NFPA 30. It contains all the requirements needed by NFPA 15.

ResponseMessage:

Public Comment No. 9-NFPA 15-2015 [New Section after 4.4]

Ballot Results


28 Eligible Voters

2 Not Returned

26 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.


11 of 26 12/10/2015 10:45 AM

Affirmative All

Asp, Roland A.

Bell, Kerry M.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.

Linder, Kenneth W.

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Streit, James R.

Sutton, Jeffery W.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett


12 of 26 12/10/2015 10:45 AM

Second Revision No. 8-NFPA 15-2015 [ Section No. 5.10.1.3 ]

5.10.1.3

A single-outlet fire department connection shall be acceptable where piped to a 3 in. (76 80 mm) orsmaller riser. [13:6.8.1.3 6.7.1.3 ]


Submitter Full Name: Sonia Barbosa


Street Address:

City:

State:

Zip:

Submittal Date: Tue Oct 06 13:06:43 EDT 2015

Committee Statement

Committee Statement: Updating extract from NFPA 13.

Response Message:

Ballot Results


28 Eligible Voters

2 Not Returned

26 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Affirmative All

Asp, Roland A.

Bell, Kerry M.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.


13 of 26 12/10/2015 10:45 AM

Linder, Kenneth W.

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Streit, James R.

Sutton, Jeffery W.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett


14 of 26 12/10/2015 10:45 AM


6.1.2.2

The electrical clearances in Table 6.1.2.2 shall apply to altitudes of 3300 ft ( 1000 m (3300 ft) or less.

Table 6.1.2.2 Electrical Clearance from Water Spray Equipment to Live Uninsulated ElectricalComponents

Nominal System Voltage (kV)Maximum System Voltage

(kV)

Design BIL

(kV)

Minimum* Clearance

in. mm

To 13.8 14.5 110 7 178

23.0 24.3 150 10 254

34.5 36.5 200 13 330

46.0 48.3 250 17 432

69.0 72.5 350 25 635

115.0 121.0 550 42 1067

138.0 145.0 650 50 1270

161.0 169.0 750 58 1473

230.0 242.0 900 76 1930

1050 84 2134

345.0 362.0 1050 84 2134

1300 104 2642

500.0 550.0 1500 124 3150

1800 144 3658

765.0 800.0 2050 167 4242

Note: BIL values are expressed as kilovolts (kV), the number being the crest value of the full waveimpulse test that the electrical equipment is designed to withstand. For BIL values that are not listed in thetable, clearances can be found by interpolation.

*For voltages up to 161 kV, the clearances are taken from NFPA 70. For voltages 230 kV and above, theclearances are taken from Table 124 of ANSI IEEE C2, National Electrical Safety Code.



Organization: National Fire Protection Assoc

Street Address:

City:

State:

Zip:

Submittal Date: Mon Oct 05 15:25:44 EDT 2015

Committee Statement

Committee Statement: Revised order of units to align with remainder of standard.

Response Message:


15 of 26 12/10/2015 10:45 AM

Ballot Results


28 Eligible Voters

2 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Affirmative All

Asp, Roland A.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.

Linder, Kenneth W.

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett

Affirmative with Comment

Bell, Kerry M.

The units in the parenthesis should be "m" rather than "ft"


16 of 26 12/10/2015 10:45 AM

Streit, James R.

Please check strike-thru and consistency of units (between ft and m).

Sutton, Jeffery W.

The first line above the table should read 3300 ft. (1000 m) instead of 1000 ft.


17 of 26 12/10/2015 10:45 AM


6.1.2.3

At altitudes in excess of 3300 ft ( 1000 m (3300 ft), the electrical clearance shall be increased at the rateof 1 percent for each 330 ft ( 100 m (330 ft) increase in altitude above 3300 ft ( 1000 m (3300 ft ).



Organization: National Fire Protection Assoc

Street Address:

City:

State:

Zip:

Submittal Date: Mon Oct 05 15:23:07 EDT 2015

Committee Statement

Committee Statement: Revised order of units to align with remainder of standard.

Response Message:

Ballot Results


28 Eligible Voters

2 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Affirmative All

Asp, Roland A.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.

Linder, Kenneth W.


18 of 26 12/10/2015 10:45 AM

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett


Bell, Kerry M.

The units in the parenthesis should be "m" rather than "ft" in two locations.

Streit, James R.

Please check strike-thru and consistency of units (between ft and m).

Sutton, Jeffery W.

The number in parenthesis should be m and not ft.


19 of 26 12/10/2015 10:45 AM

Second Revision No. 5-NFPA 15-2015 [ Sections 6.3.2.1, 6.3.2.2 ]

6.3.2.1

System piping shall be supported to maintain its integrity under fire conditions.

6.3.2.2

Piping shall be supported from steel or concrete structural members or pipe stands.

6.3.2.2.1

Where a horizontal bracket is used to attach the system piping to the pipe stand, it shall not be morethan 18 in. (457.2 mm) as measured horizontally from the centerline of the pipe stand to the centerlineof the support pipe.


20 of 26 12/10/2015 10:45 AM

6.3.2.2.2*


21 of 26 12/10/2015 10:45 AM

Pipe stands used to support piping shall be in accordance with Table 6.3.2.2.1 Table 6.3.2.2.2(a) , Table6.3.2.2.2(b) , and Table 6.3.2.2.2(c) to determine maximum heights for pipe stands supporting variousdiameters of looped piping.

Table 6.3.2.2.2 Maximum Pipe Stand Heights

Pipe Stand Diameter

Diameter of Pipe 1 1 ⁄2 in. 2 in. 2 1 ⁄2 in. 3 in. 4 in.

1 1 ⁄2 in. 10 ft 14 ft 18 ft 28 ft 30 ft

2 in. 8 ft 12 ft 16 ft 26 ft 30 ft

2 1 ⁄2 in. 6 ft 10 ft 14 ft 24 ft 30 ft

3 in. — 8 ft 12 ft 22 ft 30 ft

>3 in. — — — — 10 ft

Note: For SI units, 1 in. = 25.4 mm; 1 ft = 0.305 m.

Table 6.3.2.2.2(a) Maximum Pipe Stand Heights for Axially Loaded Pipe Stands

System Pipe Diameter

Pipe Stand Diameter

1½ in. 2 in. 2½ in. 3 in. 4 in. 6 in.

ft m ft m ft m ft m ft m ft m

1½ in. 10 3.05 14 4.27 18 5.49 28 8.53 30 9.14 30 9.14

2 in. 8 2.44 12 3.66 16 4.88 26 7.92 30 9.14 30 9.14

2½ in. 6 1.83 10 3.05 14 4.27 24 7.32 30 9.14 30 9.14

3 in. — — 8 2.44 12 3.66 22 6.71 30 9.14 30 9.14

4 in. — — — — — — — — 10 3.05 30 9.14

6 in. — — — — — — — — 10 3.05 30 9.14

8 in. — — — — — — — — — — 30 9.14

Table 6.3.2.2.2(b) Maximum Pipe Stand Heights with Support Arms Up to 1 ft 0 in. (0.305 m) in Length


Pipe Stand Diameter

1½ in. 2 in. 2½ in. 3 in. 4 in. 6 in.


1½ in. 9 2.74 14 4.27 18 5.49 28 8.53 30 9.14 30 9.14

2 in. — — 12 3.66 16 4.88 26 7.92 30 9.14 30 9.14

2½ in. — — 8 2.44 14 4.27 24 7.32 30 9.14 30 9.14

3 in. — — — — 12 3.66 22 6.71 30 9.14 30 9.14

4 in. — — — — — — — — 10 3.05 30 9.14

6 in. — — — — — — — — 10 3.05 30 9.14

8 in. — — — — — — — — 10 3.05 30 9.14

Table 6.3.2.2.2(c) Maximum Pipe Stand Heights with Support Arms Up to 1 ft 6 in. (0.46 m) in Length


Pipe Stand Diameter

1½ in. 2 in. 2½ in. 3 in. 4 in. 6 in.


1½ in. — — 14 4.27 18 5.49 28 8.53 30 9.14 30 9.14

2 in. — — — — 16 4.88 26 7.92 30 9.14 30 9.14

2½ in. — — — — 14 4.27 24 7.32 30 9.14 30 9.14

3 in. — — — — 12 3.66 22 6.71 30 9.14 30 9.14

4 in. — — — — — — — — 10 3.05 30 9.14


22 of 26 12/10/2015 10:45 AM


Pipe Stand Diameter

1½ in. 2 in. 2½ in. 3 in. 4 in. 6 in.


6 in. — — — — — — — — 10 3.05 30 9.14

8 in. — — — — — — — — — — 30 9.14

6.3.2.2.3

Where a cantilevered support arm is used to support system piping, the minimum size of the supportarm shall be such that the section modulus required in Table 6.3.2.2.3(a) and Table 6.3.2.2.3(b) doesnot exceed the section modulus of the support arm.

Table 6.3.2.2.3(a) Maximum Pipe Stand Heights with Support Arms Up to 1 ft 6 in. (0.46 m) in Length

Nominal Diameter of Pipe Being Supported — Schedule 10 Steel

1 in. 1.25 in. 1.5 in. 2 in. 2.5 in. 3 in. 3.5 in. 4 in. 5 in. 6 in. 8 in.

0.15 0.17 0.20 0.24 0.30 0.36 0.42 0.49 0.66 0.85 1.40



0.16 0.18 0.22 0.27 0.36 0.45 0.54 0.63 0.86 1.13 1.64

For SI units, 1 in. = 25.4 mm; 1 ft = 0.305 m.

Table 6.3.2.2.3(b) Required Section Modulus for Pipe Stand Horizontal Support Arms 1 ft 6 in. (0.46 m)

in Length (in. 3 )



0.23 0.26 0.31 0.36 0.44 0.54 0.63 0.73 0.99 1.27 2.09



0.24 0.27 0.33 0.41 0.54 0.68 0.81 0.95 1.29 1.69 2.46

For SI units, 1 in. = 25.4 mm; 1 ft = 0.305 m.

Detail SR-9

6.3.2.2.4

Where pipe stands are used to support straight runs of piping or other configurations that are not loopedor are not rigidly supported at the top of the pipe stand in a manner that will resist movement in alldirections, the pipe stands shall be designed in accordance with the requirements of NFPA 13 .

6.3.2.2.5*

Distance between pipe stands exceeding those in Table 6.3.2.2.4Table 6.3.2.2.4Table 6.3.2.2.2 shall bepermitted where a 45-degree diagonal is attached between the pipe stand and the loop piping. (SeeFigure A.6.3.2.2.4Figure A.6.3.2.2.4Figure A.6.3.2.2.2 .) For piping of other than Schedule 40, pipe standshall be spaced in accordance with the hanger references of NFPA 13.

Table 6.3.2.2.5 Pipe Stand Distance

Loop Size Distance Between Pipe Stands

in. mm ft mm

1 25 10 3048

1½ 40 12 3658

2 50 14 4267

2½ 65–200 15 4572


23 of 26 12/10/2015 10:45 AM

6.3.2.2.6

Pipe stands shall be constructed of Schedule 40 threaded pipe, malleable iron flange base, and shall havea threaded, grooved, or welded cap top.

6.3.2.2.7*

Pipe stands shall be anchored to a concrete pier or footing with either expansion shields, bolts forconcrete, or cast-in-place J hooks.

6.3.2.2.8*

Piping shall be attached to the pipe stand with U-bolts or equivalent attachment.

Supplemental Information

File Name Description

15-2012_Chapter_6_-_Pipe_Stand_Revisions.docx Pipe stand changes. For staff use only




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

NFPA 15 has provided basic guidelines for designing pipe stands to support looped piping for fixedspray systems for years. Language is being added to the 2016 edition of NFPA 13 to provide newguidance for the support of non-looped system piping. Previous editions of NFPA 15 show the use ofhorizontal support arms as common practice within the annex material but no limitations or guidanceare provided on how to properly design them.

Due to the combination of axial and bending stresses imposed on the pipe stands through eccentricloading when using support brackets, it is necessary to limit the allowable heights on smallerdiameter pipe stands. Larger diameter pipe stands were limited by slenderness ratio and not stress.Calculations were used with maximum KL/R values of 300. This mirrors what was allowed by NFPA13. However, the K values used to support the NFPA 15 pipe stand calculations use a value of 1.0.This is based on the assumption that the top of looped pipe stands can be considered to be rigidlybraced in both horizontal directions by the network of system piping in conjunction with the pipe standsupports.

Update associated annex material section numbers to align with new section numbering.

The pipe stand height table in the current edition of NFPA 15 remains valid for axially loaded pipeand therefore remains in the standard. Horizontal support arms were kept to relatively short lengthswhich was necessary to keep the bending stresses within allowable limits. Tables are included in thenew NFPA 15 language to give the required moduli for horizontal support arms in both 12” and 18”lengths. There are also corresponding tables for allowable maximum stand heights for each of thesupport arm sizes.

ResponseMessage:

Ballot Results


24 of 26 12/10/2015 10:45 AM


28 Eligible Voters

2 Not Returned

25 Affirmative All



0 Abstention

Not Returned

Fadorsen, Gary A.

Fisher, Brian E.

Affirmative All

Asp, Roland A.


Carrier, Kevin F.

Gagnon, Robert M.

Goranson, Harvey E.

Henderson, Scott D.

Linder, Kenneth W.

Maddry, James M.

Masingh, James A.

McCune, Randall A.

Moore, E. Parks


Multer, Thomas L.

Nielsen, Roz

Noble, Thomas A.

Owen, Larry W.

Perry, Justin A.

Pognant, Matt

Ramirez, Edward A.

Streit, James R.

Sutton, Jeffery W.

Taylor, Dennis W.

Victor, Terry L.

Wojcik, Michael J.

Zuspan, Jarrett


Bell, Kerry M.


25 of 26 12/10/2015 10:45 AM

I believe an additional section including the following text should be added after 6.3.2.2.3: "Where pipe stands areused to support straight runs of piping or other configurations that are not looped or are not rigidly supported at thetop of the pipe stand in a manner that will resist movement in all directions, the pipe stands shall be designed inaccordance with the requirements of NFPA13." I understand this will be handled by a supplemental ballot.


26 of 26 12/10/2015 10:45 AM

Documents

First Draft Meeting PPT - NFPA