B2076 RTA Spec Book Vol 2 of 2_02 April 2021.pdf

Honolulu District

Specifications For

FY21 (FEWR No. RH000587J)

Repair Building B2076 Schofield Barracks

Oahu, Hawaii

RTA Submittal 02 April 2021

Volume 2 of 2

Contract No.: W9128A-19-D-0011 Jacobs Project No.: D3259803

For Official Use Only

SEALS PAGE FOR D3259802

FY21 FEWR No. RH000587J

REPAIR BUILDING B2076

RTA DESIGN SUBMITTAL

Schofield Barracks Oahu, Hawaii

A/E CONTRACT No. W9128A-19-D-0011

This document was prepared by me or under my direct personal supervision and that I am a duly registered Professional Architect under the laws of the State of Hawaii.

Name: Myles Michibata

License Number: 12367

Firm: Architects Hawaii Limited

This document was prepared by me or under my direct personal supervision and that I am a duly registered Professional Engineer under the laws of the State of California.

Name: Jessica Escontrias

License Number: M38355

Firm: Jacobs Government Services Company

This document was prepared by me or under my direct personal supervision and that I am a duly registered Professional Engineer under the laws of the State of California.

Name: Kamran Haghighi

License Number: S4908

Firm: Jacobs Government Services Company

This document was prepared by me or under my direct personal supervision and that I am a duly registered Professional Engineer under the laws of the State of Texas.

Name:

License Number: 98244

Firm: Jacobs Government Services Company

This document was prepared by me or under my direct personal supervision and that I am a duly registered Professional Fire Protection Engineer under the laws of the Commonwealth of Virginia.

Name: James A. Beals

License Number: 0402 026777

Firm: Jacobs Government Services Company

This document was prepared by me or under my direct personal supervision and that I am a duly registered Professional Engineer under the laws of the State of Hawaii.

Name: Jonathan M. Straley

License Number: 18673-E

Firm: Jacobs Government Services Company

This document was prepared by me under my direct personal supervision and that I am a Registered Communications Distribution Designer as accredited by BICSI.

Name: Jonathan M. Straley

License Number: 292494

Firm: Jacobs Government Services Company

Kathyriya H. Kennedy

KATHYRIYA H. KENNEDY

9824498244

TEXAS REGISTERED ENGINEERING FIRM F-29

04/02/2021

FY21 Repair Building 2076 RTA Submittal Schofield Barracks, Oahu, Hawaii 02 Apr 2021

PROJECT TABLE OF CONTENTS

DI VI SI ON 01 - GENERAL REQUI REMENTS

01 32 00 03/17 PROJECT SCHEDULE

01 33 00 03/17 SUBMITTAL PROCEDURES

01 33 29 02/17 SUSTAINABILITY REPORTING

01 35 26 03/17 GOVERNMENTAL SAFETY REQUIREMENTS

01 45 00 03/17 RMS3 - CONTRACTOR MODE (RMS3/CM)

01 45 04 11/16 CONTRACTOR QUALITY CONTROL

01 45 35 02/15 SPECIAL INSPECTIONS

01 50 00 05/18 TEMPORARY CONSTRUCTION FACILITIES AND

CONTROLS

01 57 19 11/15 (Change 3 - 08/ TEMPORARY ENVIRONMENTAL CONTROLS

01 74 19 03/17 CONSTRUCTION AND DEMOLITION DEBRIS

RECYCLING

01 78 00 03/17 CLOSEOUT SUBMITTALS

01 78 23 08/15 OPERATION AND MAINTENANCE DATA

01 90 00 01/18 MISCELLANEOUS PROVISIONS

01 91 00.15 10 05/19 TOTAL BUILDING COMMISSIONING

DI VI SI ON 02 - EXI STI NG CONDI TI ONS

02 41 00 05/10 DEMOLITION

DI VI SI ON 03 - CONCRETE

03 30 00 02/19 CAST-IN-PLACE CONCRETE

03 42 13.00 10 05/16 PLANT-PRECAST CONCRETE PRODUCTS FOR

BELOW GRADE CONSTRUCTION

DI VI SI ON 04 - MASONRY

04 20 00 11/15 UNIT MASONRY

DI VI SI ON 05 - METALS

05 05 23.16 08/18 STRUCTURAL WELDING

05 12 00 08/18 STRUCTURAL STEEL

05 50 13 05/17 MISCELLANEOUS METAL FABRICATIONS

05 51 33 02/16 METAL LADDERS

DI VI SI ON 06 - WOOD, PLASTI CS, AND COMPOSI TES

06 20 00 08/16 FINISH CARPENTRY

06 41 16.00 10 08/10 PLASTIC-LAMINATE-CLAD ARCHITECTURAL

CABINETS

06 61 16 08/10 SOLID SURFACING FABRICATIONS

DI VI SI ON 07 - THERMAL AND MOI STURE PROTECTI ON

07 21 16 11/11 MINERAL FIBER BLANKET INSULATION

07 24 00 05/11 EXTERIOR INSULATION AND FINISH SYSTEMS

07 60 00 05/17 FLASHING AND SHEET METAL

07 84 00 05/10 FIRESTOPPING

07 92 00 08/16 JOINT SEALANTS

DI VI SI ON 08 - OPENI NGS

PROJECT TABLE OF CONTENTS Page 1

08 11 13 02/10 STEEL DOORS AND FRAMES

08 11 16 05/17 ALUMINUM DOORS,FRAMES, AND WINDOW WALL

08 14 00 08/16 WOOD DOORS

08 31 00 05/17 ACCESS DOORS AND PANELS

08 51 13 05/19 ALUMINUM WINDOWS

08 71 00 02/16 DOOR HARDWARE

08 81 00 05/19 GLAZING

08 91 00 05/11 METAL WALL LOUVERS

DI VI SI ON 09 - FI NI SHES

09 22 00 02/10 SUPPORTS FOR GYPSUM BOARD

09 29 00 08/16 GYPSUM BOARD

09 30 10 08/17 CERAMIC TILING

09 62 38 08/17 STATIC-CONTROL FLOORING

09 65 00 08/10 RESILIENT FLOORING

09 72 00 08/17 WALLCOVERINGS

09 90 00 05/11 PAINTS AND COATINGS

DI VI SI ON 10 - SPECI ALTI ES

10 11 00 08/17 VISUAL DISPLAY UNITS

10 14 00.20 08/17 PLAQUE SIGNAGE

10 28 13 08/17 TOILET ACCESSORIES

DI VI SI ON 11 - EQUI PMENT

11 31 13 08/17 ELECTRIC KITCHEN EQUIPMENT

DI VI SI ON 12 - FURNI SHI NGS

12 21 00 08/17 WINDOW BLINDS

DI VI SI ON 13 - SPECI AL CONSTRUCTI ON

13 48 00 05/18 SEISMIC BRACING FOR MISCELLANEOUS

EQUIPMENT

DI VI SI ON 14 - CONVEYI NG EQUI PMENT

14 21 23 05/16 ELECTRIC TRACTION PASSENGER ELEVATORS

DI VI SI ON 21 - FI RE SUPPRESSI ON

21 12 00 05/11 STANDPIPE SYSTEMS

21 13 13.00 10 05/09 WET PIPE SPRINKLER SYSTEM, FIRE

PROTECTION

DI VI SI ON 22 - PLUMBI NG

22 00 00 11/15 PLUMBING, GENERAL PURPOSE

DI VI SI ON 23 - HEATI NG, VENTI LATI NG, AND AI R CONDI TI ONI NG ( HVAC)

23 00 00 08/18 AIR SUPPLY, DISTRIBUTION, VENTILATION,

AND EXHAUST SYSTEMS

23 05 15 02/14 COMMON PIPING FOR HVAC

23 05 48.19 05/18 SEISMIC BRACING FOR HVAC

23 05 93 11/15 TESTING, ADJUSTING, AND BALANCING FOR

PROJECT TABLE OF CONTENTS Page 2

HVAC

23 07 00 02/13 THERMAL INSULATION FOR MECHANICAL

SYSTEMS

23 09 00 02/19, CHG 2: 02/20 INSTRUMENTATION AND CONTROL FOR HVAC

23 09 13 11/15, CHG 1: 11/20 INSTRUMENTATION AND CONTROL DEVICES

FOR HVAC

23 09 23.02 02/19, CHG 1: 02/20 BACNET DIRECT DIGITAL CONTROL FOR HVAC

AND OTHER BUILDING CONTROL SYSTEMS

23 64 10 11/16 WATER CHILLERS, VAPOR COMPRESSION TYPE

23 81 29 02/20 VARIABLE REFRIGERANT FLOW HVAC SYSTEMS

DI VI SI ON 25 - I NTEGRATED AUTOMATI ON

25 05 11.21 11/17 CYBERSECURITY FOR FACILITY-RELATED

CONTROL SYSTEMS FIRE AND LIFE SAFETY

TO INCLUDE FIRE SUPPRESSION, FIRE

ALARM REPORTING AND MASS NOTIFICATION

25 05 11.23 11/17 CYBERSECURITY FOR FACILITY-RELATED

CONTROL SYSTEMS UTILITY MONITORING AND

CONTROL SYSTEM INCLUDING HVAC

25 05 11.26 11/17 CYBERSECURITY FOR FACILITY-RELATED

CONTROL SYSTEMS UTILITY CONTROL SYSTEM

TO INCLUDE ADVANCED METER

INFRASTRUCTURE

DI VI SI ON 26 - ELECTRI CAL

26 05 19.10 10 05/16 INSULATED WIRE AND CABLE

26 05 48.00 10 10/07 SEISMIC PROTECTION FOR ELECTRICAL

EQUIPMENT

26 08 00 08/08 APPARATUS INSPECTION AND TESTING

26 20 00 08/19 INTERIOR DISTRIBUTION SYSTEM

26 24 13 05/15 SWITCHBOARDS

26 28 01.00 10 10/07 COORDINATED POWER SYSTEM PROTECTION

26 51 00 05/16 INTERIOR LIGHTING

DI VI SI ON 27 - COMMUNI CATI ONS

27 05 14.00 10 04/06 CABLE TELEVISION PREMISES DISTRIBUTION

SYSTEM

27 10 00 08/11 BUILDING TELECOMMUNICATIONS CABLING

SYSTEM

DI VI SI ON 28 - ELECTRONI C SAFETY AND SECURI TY

28 31 76 08/11 INTERIOR FIRE ALARM AND MASS

NOTIFICATION SYSTEM

DI VI SI ON 31 - EARTHWORK

31 00 00 08/08 EARTHWORK

31 31 16.13 08/16 CHEMICAL TERMITE CONTROL

31 31 16.19 02/16 TERMITE CONTROL BARRIERS

DI VI SI ON 32 - EXTERI OR I MPROVEMENTS

32 16 19 05/18 CONCRETE SIDEWALKS

32 92 23 04/06 SODDING

PROJECT TABLE OF CONTENTS Page 3

DI VI SI ON 33 - UTI LI TI ES

33 11 00 02/18 WATER UTILITY DISTRIBUTION PIPING

33 40 00 02/10 STORM DRAINAGE UTILITIES

33 71 02 02/15 UNDERGROUND ELECTRICAL DISTRIBUTION

33 82 00 04/06 TELECOMMUNICATIONS OUTSIDE PLANT (OSP)

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 4

SECTION 21 12 00

STANDPIPE SYSTEMS

05/11

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C651 (2014) Standard for Disinfecting Water Mains

FM GLOBAL (FM)

FM APP GUIDE (updated on-line) Approval Guide http://www.approvalguide.com/

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 13 (2019) Standard for the Installation of Sprinkler Systems

NFPA 14 (2019) Standard for the Installation of Standpipes and Hose Systems

NFPA 24 (2019; TIA 19-1) Standard for the Installation of Private Fire Service Mains and Their Appurtenances

NFPA 70 (2020; ERTA 20-1 2020; ERTA 20-2 2020; TIA

20-1; TIA 20-2; TIA 20-3; TIA 20-4)

National Electrical Code

NFPA 72 (2019; TIA 19-1; ERTA 2019) National Fire Alarm and Signaling Code

UNDERWRITERS LABORATORIES (UL)

UL Fire Prot Dir (2012) Fire Protection Equipment Directory

1.2 SYSTEM DESCRIPTION

Design and provide new manual wet Class I standpipe system as shown.

1.3 SYSTEM DESCRIPTION

System design and manufacturer's products shall be in accordance with the required and advisory provisions of NFPA 14 except as modified herein.

Provide sprinkler portion of system under Section 21 13 13.00 20 WET PIPE SPRINKLER SYSTEM, FIRE PROTECTION. Each system shall be designed for earthquakes and shall include materials, accessories, and equipment inside and outside the building necessary to provide each system complete and

Jacobs D3259802 SECTION 21 12 00 Page 1 ready for use. Devices and equipment shall be UL Fire Prot Dir listed or FM APP GUIDE approved for fire protection service. In the publications referred to herein, the advisory provisions shall be considered to be mandatory, as though the word "shall" had been substituted for "should" wherever it appears; reference to the "authority having jurisdiction" shall be interpreted to mean the USACE Fire Protection Engineer.

1.3.1 Residual Pressure

The minimum residual pressure at the outlet of the most remote 64 mm hose connection shall be 100 psig while the system is discharging at the required design flow rates. Hydraulic calculations shall be based upon an inlet pressure and flow rate at the fire department connection of 150 psi at 1500 GPM.

1.3.2 Friction Losses

Calculate losses in piping in accordance with the Hazen-Williams formula with 'C' value of 120 for steel piping.

1.3.3 Standpipe System Drawings

Prepare in accordance with the requirements for "Plans and Specifications" as specified in NFPA 14 . Each drawing shall be 34 by 22 inches. Plans shall be drawn to a scale not less than 1/8 inch scale Do not commence work until the design of each system and the various components have been approved. Show data essential for proper installation of each system.

Show details, plan view, elevations, and sections of the systems supply and piping. Show piping schematic of systems supply, devices, valves, pipe, and fittings. Submit drawings signed by a registered fire protection engineer. Show:

a. Room, space or area layout and include pipe supports and hangers.

b. Field wiring diagrams showing locations of devices and points of connection and terminals used for all electrical field connections in the system, with wiring color code scheme.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

The AHJ will review any approve all submittals in this section requiring Government approval.

SD-02 Shop Drawings

Standpipe system; G

SD-03 Product Data

Aboveground Pipe and fittings; G

Jacobs D3259802 SECTION 21 12 00 Page 2

Mechanical couplings; G

Pipe hangers and supports; G

Valves, including gate, check, and hose; G

Fire department connections; G

Data which describes more than one type of item shall be clearly marked to indicate which type the Contractor intends to provide.

Submit one original for each item and clear, legible, first-generation photocopies for the remainder of the specified copies. Incomplete or illegible photocopies will not be accepted. Partial submittals will not be accepted.

SD-06 Test Reports

Preliminary tests; G

Acceptance tests; G

Submit for all inspections and tests specified under paragraph entitled "Field Quality Control."

SD-07 Certificates

Qualifications of installer; G

Submit installers qualifications as required under paragraph entitled "Qualifications of Installer."

SD-11 Closeout Submittals

System as-built drawings; G

1.5 QUALITY ASSURANCE

1.5.1 Qualifications of Installer

Prior to commencing work, submit data showing that the Contractor has successfully installed fire extinguishing standpipe systems of the same type and design as specified herein, or that he has a firm contractual agreement with a subcontractor having the required experience. Include the names and locations of at least two installations where the Contractor, or the subcontractor referred to above, has installed such systems. Indicate the type and design of each system, and certify that the system has performed satisfactorily for a period of at least 18 months.

Qualifications of System Technician: Installation drawings, shop drawing and as-built drawings shall be prepared, by or under the supervision of, an individual who is experienced with the types of works specified herein, and is currently certified by the National Institute for Certification in Engineering Technologies (NICET) as an engineering technician with minimum Level-III certification in Automatic Sprinkler System program. Contractor shall submit data for approval showing the name and certification of all involved individuals with such qualifications at or prior to submittal of drawings.

Jacobs D3259802 SECTION 21 12 00 Page 3

1.5.2 System As-Built Drawings

Upon completion, and before final acceptance of the work, submit a complete set of as-built drawings of each system. Submit 34 by 22 inch reproducible as-built drawings on mylar film with title block similar to full size contract drawings. Furnish as-built(record) working drawings in addition to the as-built drawings required by Division 1, "General Requirements."

1.6 DELIVERY, STORAGE AND HANDLING

Protect stored equipment from weather, humidity and temperature variations, dirt, dust, and other contaminants.

PART 2 PRODUCTS

2.1 ABOVEGROUND PIPING SYSTEMS

Provide fittings for changes in direction of piping and for connections.

Make changes in piping sizes through tapered reducing pipe fittings;

bushings will not be permitted. Perform welding in the shop; field welding will not be permitted.

2.1.1 Pipe and Fittings

Provide in accordance with NFPA 14 , except as modified herein. Steel piping shall be Schedule 40 for sizes less than 8 inches, and Schedule 30 or 40 for sizes 8 inches and larger. Fittings shall be welded, threaded, or grooved-end type. Plain-end fittings with mechanical couplings and fittings which use steel gripping devices to bite into the pipe when pressure is applied will not be permitted. Rubber gasketed grooved-end pipe and fittings with mechanical couplings shall be permitted in pipe sizes 1.5 inches and larger. Fittings shall be UL Fire Prot Dir listed or FM APP GUIDE approved for use in dry pipe sprinkler systems. Fittings, mechanical couplings, and rubber gaskets shall be supplied by the same manufacturer. Steel piping with wall thickness less than Schedule 30 shall not be threaded. Side outlet tees using rubber gasketed fittings shall not be permitted. Pipe and fittings shall be metal.

2.1.2 Pipe Hangers and Supports

Provide in accordance with NFPA 14 .

2.1.3 Valves

NFPA 14 . Provide valves of types approved for fire service. Hose and gate valves shall open by counterclockwise rotation. Provide isolation and check valves as required by NFPA 14 . Isolation valves shall be OS&Y type. Check valves shall be flanged clear opening swing-check type with flanged inspection and access cover plate for sizes 4 inches and larger.

2.1.3.1 Hose Valves

Provide bronze hose valve with 2 1/2 inch National Standard male hose threads, and 2 1/2 inch NH female by 1 1/2 inch IPT male reducer with cap and chain.

Jacobs D3259802 SECTION 21 12 00 Page 4

2.1.4 Identification Signs

NFPA 14 . Attach properly lettered and approved metal signs to each valve and alarm device.

2.1.5 Pipe Sleeves

Provide where piping passes entirely through walls, floors, roofs and partitions. Secure sleeves in position and location during construction.

Provide sleeves of sufficient length to pass through entire thickness of walls, floors, roofs and partitions. Provide one inch minimum clearance between exterior of piping and interior of sleeve or core-drilled hole.

Firmly pack space with mineral wool insulation. Seal space at both ends of the sleeve or core-drilled hole with plastic waterproof cement which will dry to a firm but pliable mass, or provide a mechanically adjustable segmented elastomeric seal. In fire walls and fire floors, seal both ends of pipe sleeves or core-drilled holes with UL listed fill, void, or cavity material.

2.1.5.1 Sleeves in Masonry and Concrete Walls, Floors, and Roofs

Provide hot-dip galvanized steel, ductile-iron, or cast-iron sleeves.

Core drilling of masonry and concrete may be provided in lieu of pipe sleeves when cavities in the core-drilled hole are completely grouted smooth. Extend sleeves in floor slabs 3 inches above finished floors.

2.1.5.2 Sleeves in Partitions

Provide 26 gage galvanized steel sheet.

2.1.6 Escutcheon Plates

Provide one piece or split hinge type metal plates for piping passing through walls, floors, and ceilings in both exposed and concealed spaces.

Provide polished stainless steel plates or chromium-plated finish on copper alloy plates in finished spaces. Provide paint finish on metal plates in unfinished spaces. Securely anchor plates in place.

2.1.7 Fire Department Connections

Provide connections approximately 3 feet above finish grade, of the approved two-way type with 2.5 inch National Standard female hose threads with plug, chain, and identifying fire department connection escutcheon plate.

PART 3 EXECUTION

3.1 EXCAVATION, BACKFILLING, AND COMPACTING

Provide under this section as specified in Section 31 00 00 EARTHWORK.

3.2 STANDPIPE SYSTEM INSTALLATION

Equipment, materials, installation, workmanship, fabrication, assembly, erection, examination, inspection, and testing shall be in accordance with the NFPA standards referenced herein. Install piping straight and true to bear evenly on hangers and supports. Provide fittings for changes in direction of piping and for all connections. Make changes in piping sizes through standard reducing pipe fittings; do not use bushings. Cut pipe

Jacobs D3259802 SECTION 21 12 00 Page 5 accurately and work into place without springing or forcing. Ream pipe ends and free pipe and fittings from burrs. Clean with solvent to remove all varnish and cutting oil prior to assemble. Make screw joints with PTFE tape applied to male thread only.

3.3 DISINFECTION

Disinfect new water piping from the point of connection at the water main and existing water piping affected by the Contractor's operation in accordance with AWWA C651. Exercise caution when mixing chlorine disinfectant solutions. Fill piping systems with solution containing minimum of 50 parts per million of free available chlorine and allow solution to stand for a minimum of 24 hours. Flush solution from systems with clean water until maximum residual chlorine content is not greater than 0.2 parts per million. Obtain at least two consecutive satisfactory bacteriological samples from new water piping, analyze by a certified laboratory, and submit results prior to new water piping being placed into service.

3.4 FIELD PAINTING

Field painting of fire extinguishing standpipe system shall be specified in Section 09 90 00 PAINTS AND COATINGS. Field painting requirements for "Fire Extinguishing Sprinkler Systems" for finished areas shall apply.

3.4.1 Piping Labels

Provide permanent labels in mechanical rooms, spaced at 20 foot maximum intervals along pipe, indicating "STANDPIPE."

3.5 ELECTRICAL WORK

Provide electrical work associated with this section under Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM, except for fire alarm wiring. Provide fire alarm wiring and connection to fire alarm systems under Section this section in accordance with NFPA 70 and NFPA 72 .

3.6 FLUSHING

Flush the piping system with potable water in accordance with NFPA 14 .

Continue flushing operation until water is clear, but for not less than 10 minutes.

3.7 FIELD QUALITY CONTROL

Prior to initial operation, inspect equipment and piping systems for compliance with drawings, specifications, and manufacturer's submittals.

Perform tests in the presence of the Contracting Officer to determine conformance with the specified requirements.

3.7.1 Preliminary Tests

Each piping system shall be hydrostatically tested at 200 psig in accordance with NFPA 14 and NFPA 24 and shall show no leakage or reduction in gauge pressure after 2 hours. The Contractor shall conduct complete preliminary tests, which shall encompass all aspects of system operation.

When tests have been completed and all necessary corrections made, submit to the Contracting Officer a signed and dated certificate, similar to that specified in NFPA 13 , attesting to the satisfactory completion of all

Jacobs D3259802 SECTION 21 12 00 Page 6 testing and stating that the system is in operating condition. Also include a written request for a formal inspection and test.

3.7.2 Formal Inspection and Tests (Acceptance Tests)

The AHJ will witness formal tests and approve all systems before they are accepted. The system shall be considered ready for such testing only after all necessary preliminary tests have been made and all deficiencies found have been corrected to the satisfaction of the Contracting Officer and written certification to this effect is received by the DAHJ. Submit the request for formal inspection at least 15 working days prior to the date the inspection is to take place. Experienced technicians regularly employed by the Contractor in the installation of both the mechanical and electrical portions of such systems shall be present during the inspection and shall conduct the testing. All instruments, personnel, appliances and equipment for testing shall be furnished by the Contractor. The Government will furnish water for the tests. All necessary tests encompassing all aspects of system operation shall be made including the following, and any deficiency found shall be corrected and the system retested at no cost to the Government.

3.7.2.1 Flow Test

Perform flow tests of each standpipe riser in accordance with NFPA 14.

Affix 0-300 psi pressure gauges to lowest hose valve and next-to-highest hose valve. Connect lined, 2 1/2 inch diameter fire hose with underwriter's playpipe to highest hose valve and flow at least 250 gpm for 5 minutes from standpipe to a safe location outside the building. For dry pipe system, supply system through 2 1/2 inch fire hose connected to the nearest fire hydrant. Furnish hose, nozzles and fittings required for this test.

3.7.3 Additional Tests

When deficiencies, defects or malfunctions develop during the tests required, all further testing of the system shall be suspended until proper adjustments, corrections or revisions have been made to assure proper performance of the system. If these revisions require more than a nominal delay, the Contracting Officer shall be notified when the additional work has been completed, to arrange a new inspection and test of the system. All tests required shall be repeated prior to final acceptance, unless directed otherwise.

-- End of Section --

Jacobs D3259802 SECTION 21 12 00 Page 7

THIS PAGE INTENTIONALLY LEFT BLANK

Jacobs D3259802 SECTION 21 12 00 Page 8

SECTION 21 13 13.00 10

WET PIPE SPRINKLER SYSTEM, FIRE PROTECTION

05/09

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASME INTERNATIONAL (ASME)

ASME B16.1 (2015) Gray Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250

ASME B16.3 (2016) Malleable Iron Threaded Fittings, Classes 150 and 300

ASME B16.4 (2014) Standard for Gray Iron Threaded Fittings; Classes 125 and 250

ASME B16.9 (2018) Factory-Made Wrought Buttwelding Fittings

ASME B16.11 (2016) Forged Fittings, Socket-Welding and Threaded

ASME B16.21 (2016) Nonmetallic Flat Gaskets for Pipe Flanges

ASME B18.2.2 (2015) Nuts for General Applications:

Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series)

ASTM INTERNATIONAL (ASTM)

ASTM A47/A47M (1999; R 2018; E 2018) Standard Specification for Ferritic Malleable Iron Castings

ASTM A53/A53M (2018) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A135/A135M (2009; R2014) Standard Specification for Electric-Resistance-Welded Steel Pipe

ASTM A183 (2014) Standard Specification for Carbon Steel Track Bolts and Nuts

ASTM A449 (2014) Standard Specification for Hex Cap Screws, Bolts, and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use

Jacobs D3259802 SECTION 21 13 13.00 10 Page 1

ASTM A536 (2020) Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

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

ASTM F436 (2011) Hardened Steel Washers

FM GLOBAL (FM)

FM APP GUIDE (updated on-line) Approval Guide http://www.approvalguide.com/

MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS

INDUSTRY (MSS)

MSS SP-71 (2018) Gray Iron Swing Check Valves, Flanged and Threaded Ends

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 13 (2019) Standard for the Installation of Sprinkler Systems

NFPA 24 (2019; TIA 19-1) Standard for the Installation of Private Fire Service Mains and Their Appurtenances

NFPA 1963 (2019) Standard for Fire Hose Connections

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 3-301-01 (2019) Structural Engineering

UNDERWRITERS LABORATORIES (UL)

UL 668 (2004; Reprint Jul 2016) UL Standard for Safety Hose Valves for Fire-Protection Service

UL Bld Mat Dir (updated continuously online) Building Materials Directory

UL Fire Prot Dir (2012) Fire Protection Equipment Directory

1.2 SYSTEM DESCRIPTION

Furnish piping offsets, fittings, and any other accessories as required to provide a complete installation and to eliminate interference with other construction. Install sprinkler system over and under ducts, piping and platforms when such equipment can negatively effect or disrupt the sprinkler discharge pattern and coverage. Provide wet pipe sprinkler system in all areas of the building . Except as modified herein, the system shall be designed and installed in accordance with NFPA 13 . Rack sprinklers shall be in accordance with NFPA 13 . Pipe sizes which are not

Jacobs D3259802 SECTION 21 13 13.00 10 Page 2 indicated on drawings shall be determined by hydraulic calculation.

Design any portions of the sprinkler system that are not indicated on the drawings including locating sprinklers, piping and equipment, and size piping and equipment when this information is not indicated on the drawings or is not specified herein. The design of the sprinkler system shall be based on hydraulic calculations, and the other provisions specified herein.

1.2.1 Hydraulic Design

Hydraulically design the system to discharge a minimum density and hydraulic area as indicated on the drawings. The minimum pipe size for branch lines in gridded systems shall be 1-1/4 inch. Hydraulic calculations shall be in accordance with the Area/Density Method of NFPA 13 .

Water velocity in the piping shall not exceed 20 ft/s.

1.2.1.1 Hose Demand

Add an allowance for exterior hose streams of 250 gpm to the sprinkler system demand at the point of connection to the existing system.

1.2.1.2 Basis for Calculations

The design of the system shall be based upon a water supply as indicated on the drawings. Water supply shall be presumed available at the point of connection to existing . Hydraulic calculations shall be based upon the Hazen-Williams formula with a "C" value of 120 for steel piping, 150 for copper tubing, 140 for new cement-lined ductile-iron piping, and 100 for existing underground piping.

1.2.1.3 Hydraulic Calculations

Submit hydraulic calculations, including a drawing showing hydraulic reference points and pipe segments and as outlined in NFPA 13 , except that calculations shall be performed by computer using software intended specifically for fire protection system design using the design data shown on the drawings. Software that uses k-factors for typical branch lines is not acceptable. Calculations shall be based on the water supply data shown on the drawings to substantiate that the design area used in the calculations is the most demanding hydraulically. Water supply curves and system requirements shall be plotted on semi-logarithmic graph paper so as to present a summary of the complete hydraulic calculation. Provide a summary sheet listing sprinklers in the design area and their respective hydraulic reference points, elevations, actual discharge pressures and actual flows. Elevations of hydraulic reference points (nodes) shall be indicated. Documentation shall identify each pipe individually and the nodes connected thereto. Indicate the diameter, length, flow, velocity, friction loss, number and type fittings, total friction loss in the pipe, equivalent pipe length and Hazen-Williams coefficient for each pipe. For gridded systems, calculations shall show peaking of demand area friction loss to verify that the hydraulically most demanding area is being used.

Also for gridded systems, a flow diagram indicating the quantity and direction of flows shall be included. A drawing showing hydraulic reference points (nodes) and pipe designations used in the calculations shall be included and shall be independent of shop drawings.

1.2.2 Sprinkler Coverage

Sprinklers shall be uniformly spaced on branch lines. In buildings

Jacobs D3259802 SECTION 21 13 13.00 10 Page 3 protected by automatic sprinklers, sprinklers shall provide coverage throughout 100 percent of the building. This includes, but is not limited to, telephone rooms, electrical equipment rooms, boiler rooms, switchgear rooms, transformer rooms, and other electrical and mechanical spaces.

Coverage per sprinkler shall be in accordance with NFPA 13 , but shall not exceed 100 square feet for extra hazard occupancies, 130 square feet for ordinary hazard occupancies, and 225 square feet for light hazard occupancies.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Shop Drawings; G As-Built Drawings

SD-03 Product Data

Fire Protection Related Submittals Materials and Equipment; G Spare Parts Preliminary Tests; G Final Acceptance Test; G Onsite Training; G Fire Protection Specialist; G Sprinkler System Installer; G

SD-05 Design Data

Sway Bracing; G Hydraulic Calculations; G

SD-06 Test Reports

Preliminary Test Report Final Acceptance Test Report

SD-07 Certificates

Inspection by Fire Protection Specialist

SD-10 Operation and Maintenance Data

Operating and Maintenance Manuals; G

1.4 QUALITY ASSURANCE

Compliance with referenced NFPA standards is mandatory. In the event of a conflict between specific provisions of this specification and applicable NFPA standards, this specification governS. Interpret reference to "authority having jurisdiction" to mean the Contracting Officer.

Jacobs D3259802 SECTION 21 13 13.00 10 Page 4

1.4.1 Fire Protection Specialist

Perform work specified in this section under the supervision of and certified by the Fire Protection Specialist who is an individual registered professional engineer who has passed the fire protection engineering written examination administered by the National Council of Examiners for Engineering and Surveys (NCEES). Submit the name and documentation of certification of the proposed Fire Protection Specialists, no later than 14 days after the Notice to Proceed and prior to the submittal of the sprinkler system drawings and hydraulic calculations. The Fire Protection Specialist shall prepare and submit a list of the fire protection related submittals, no later than 7 days after the approval of the Fire Protection Specialist, from the Contract Submittal Register that relate to the successful installation of the sprinkler systems(s). The submittals identified on this list shall be accompanied by a letter of approval signed and dated by the Fire Protection Specialist when submitted to the Government. The Fire Protection Specialist shall be regularly engaged in the design and installation of the type and complexity of system specified in the contract documents, and shall have served in a similar capacity for at least three systems that have performed in the manner intended for a period of not less than 6 months.

1.4.2 Sprinkler System Installer

Work specified in this section shall be performed by the Sprinkler System Installer who is regularly engaged in the installation of the type and complexity of system specified in the contract documents, and who has served in a similar capacity for at least three systems that have performed in the manner intended for a period of not less than 6 months.

Submit the name and documentation of certification of the proposed Sprinkler System Installer, concurrent with submittal of the Fire Protection Specialist Qualifications.

1.4.3 Shop Drawings

Shop Drawings shall conform to the requirements established for working plans as prescribed in NFPA 13 . Submit 3 copies of the Sprinkler System shop drawings, no later than 21 days prior to the start of sprinkler system installation. Drawings shall include plan and elevation views demonstrating that the equipment will fit the allotted spaces with clearance for installation and maintenance. Each set of drawings shall include the following:

a. Descriptive index of drawings in the submittal with drawings listed in sequence by drawing number. A legend identifying device symbols, nomenclature, and conventions used.

b. Floor plans drawn to a scale not less than 1/8" = 1'-0" which clearly show locations of sprinklers, risers, pipe hangers, seismic separation assemblies, sway bracing, inspector's test connections, drains, and other applicable details necessary to clearly describe the proposed arrangement. Each type of fitting used and the locations of bushings, reducing couplings, and welded joints shall be indicated.

c. Actual center-to-center dimensions between sprinklers on branch lines and between branch lines; from end sprinklers to adjacent walls; from walls to branch lines; from sprinkler feed mains, cross-mains and

Jacobs D3259802 SECTION 21 13 13.00 10 Page 5 branch lines to finished floor and roof or ceiling. A detail shall show the dimension from the sprinkler and sprinkler deflector to the ceiling in finished areas.

d. Longitudinal and transverse building sections showing typical branch line and cross-main pipe routing as well as elevation of each typical sprinkler above finished floor.

e. Details of each type of riser assembly; pipe hanger; sway bracing for earthquake protection, and restraint of underground water main at point-of-entry into the building, and electrical devices and interconnecting wiring. Submit load calculations for sizing of sway bracing, for systems that are required to be protected against damage from earthquakes.

1.5 DELIVERY, STORAGE, AND HANDLING

All equipment delivered and placed in storage shall be housed in a manner to preclude any damage from the weather, humidity and temperature variations, dirt and dust, or other contaminants. Additionally, all pipes shall either be capped or plugged until installed.

1.6 EXTRA MATERIALS

Submit spare parts data for each different item of material and equipment specified. The data shall include a complete list of parts and supplies, with current unit prices and source of supply, and a list of parts recommended by the manufacturer to be replaced after 1 year and 3 years of service. Include a list of special tools and test equipment required for maintenance and testing of the products supplied.

PART 2 PRODUCTS

2.1 STANDARD PRODUCTS

Provide materials and equipment which are standard products of a manufacturer regularly engaged in the manufacture of such products and that essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening.

2.2 NAMEPLATES

All equipment shall have a nameplate that identifies the manufacturer's name, address, type or style, model or serial number, and catalog number.

2.3 REQUIREMENTS FOR FIRE PROTECTION SERVICE

Provide Materials and Equipment that have been tested by Underwriters Laboratories, Inc. and are listed in UL Fire Prot Dir or approved by Factory Mutual and listed in FM APP GUIDE. Where the terms "listed" or "approved" appear in this specification, such shall mean listed in UL Fire Prot Dir or FM APP GUIDE. Submit manufacturer's catalog data included with the Sprinkler System Drawings for all items specified herein. The data shall be highlighted to show model, size, options, etc., that are intended for consideration. Data shall be adequate to demonstrate compliance with all contract requirements. In addition, provide a complete equipment list that includes equipment description, model number and quantity.

Jacobs D3259802 SECTION 21 13 13.00 10 Page 6

2.4 ABOVEGROUND PIPING COMPONENTS

Aboveground piping shall be steel or copper.

2.4.1 Steel Piping Components

2.4.1.1 Steel Pipe

Except as modified herein, steel pipe shall be blackas permitted by NFPA 13 and shall conform to applicable provisions of ASTM A795/A795M , ASTM A53/A53M, or ASTM A135/A135M . Pipe shall be Schedule 40. Pipe shall be marked with the name of the manufacturer, kind of pipe, and ASTM designation.

2.4.1.2 Fittings for Non-Grooved Steel Pipe

Fittings shall be cast iron conforming to ASME B16.4 , steel conforming to ASME B16.9 or ASME B16.11 , or malleable iron conforming to ASME B16.3 .

Steel press fittings shall be approved for fire protection systems.

Fittings into which sprinklers, drop nipples or riser nipples (sprigs) are screwed shall be threaded type. Plain-end fittings with mechanical couplings, fittings that use steel gripping devices to bite into the pipe and segmented welded fittings shall not be used.

2.4.1.3 Grooved Mechanical Joints and Fittings

Joints and fittings shall be designed for not less than 175 psi service and shall be the product of the same manufacturer;segmented welded fittings shall not be used. Fitting and coupling houses shall be malleable iron conforming to ASTM A47/A47M, Grade 32510; ductile iron conforming to ASTM A536, Grade 65-45-12. Gasket shall be the flush type that fills the entire cavity between the fitting and the pipe. Nuts and bolts shall be heat-treated steel conforming to ASTM A183 and shall be cadmium plated or zinc electroplated.

2.4.1.4 Flanges

Flanges shall conform to NFPA 13 and ASME B16.1 . Gaskets shall be non-asbestos compressed material in accordance with ASME B16.21 , 1/16 inch thick, and full face or self-centering flat ring type.

2.4.1.5 Bolts, Nut, and Washers

Bolts shall be conform to ASTM A449, Type 1 and shall extend no less than three full threads beyond the nut with bolts tightened to the required torque. Nuts shall be hexagon type conforming to ASME B18.2.2 . Washers shall meet the requirements of ASTM F436. Flat circular washers shall be provided under all bolt heads and nuts.

2.4.2 Pipe Hangers

Hangers shall be listed in UL Fire Prot Dir or FM APP GUIDE and of the type suitable for the application, construction, and pipe type and sized to be supported.

Jacobs D3259802 SECTION 21 13 13.00 10 Page 7

2.4.3 Valves

2.4.3.1 Control Valve and Gate Valve

Manually operated sprinkler control valve and gate valve shall be outside stem and yoke (OS&Y) type and shall be listed in UL Bld Mat Dir or

FM APP GUIDE.

2.4.3.2 Check Valve

Check valve 2 inches and larger shall be listed in UL Bld Mat Dir or FM APP GUIDE. Check valves 4 inches and larger shall be of the swing type with flanged cast iron body and flanged inspection plate, shall have a clear waterway and shall meet the requirements of MSS SP-71 , for Type 3 or 4.

2.4.3.3 Hose Valve

Valve shall comply with UL 668 and shall have a minimum rating of 300 psi.

Valve shall be non-rising stem, all bronze, 90 degree angle type, with 2-1/2 inch American National Standard Fire Hose Screw Thread (NH) male outlet in accordance with NFPA 1963 . Hose valve shall be provided with 2-1/2 to 1-1/2 inch reducer. Hose valves shall be equipped with lugged cap with drip drain, cap gasket and chain. Valve finish shall be polished brass.

2.5 RISER CHECK VALVE ASSEMBLY

Assembly shall include a check valve, standard trim piping, pressure gauges, testing valves, main drain, and other components as required for a fully operational system.

2.6 ALARM INITIATING AND SUPERVISORY DEVICES

2.6.1 Sprinkler Waterflow Indicator Switch, Vane Type

Switch shall be vane type with a pipe saddle and cast aluminum housing.

The electro-mechanical device shall include a flexible, low-density polyethylene paddle conforming to the inside diameter of the fire protection pipe. The device shall sense water movements and be capable of detecting a sustained flow of 10 gpm or greater. The device shall contain a retard device adjustable from 0 to 90 seconds to reduce the possibility of false alarms caused by transient flow surges. The switch shall be tamper resistant and contain two SPDT (Form C) contacts arranged to transfer upon removal of the housing cover, and shall be equipped with a silicone rubber gasket to assure positive water seal and a dustproof cover and gasket to seal the mechanism from dirt and moisture.

2.6.2 Sprinkler Pressure (Waterflow) Alarm Switch

Pressure switch shall include a metal housing with a neoprene diaphragm, SPDT snap action switches and a 1/2 inch NPT male pipe thread. The switch shall have a maximum service pressure rating of 175 psi. There shall be two SPDT (Form C) contacts factory adjusted to operate at 4 to 8 psi. The switch shall be capable of being mounted in any position in the alarm line trim piping of the alarm check valve.

Jacobs D3259802 SECTION 21 13 13.00 10 Page 8

2.6.3 Valve Supervisory (Tamper) Switch

Switch shall be suitable for mounting to the type of control valve to be supervised open. The switch shall be tamper resistant and contain one set of SPDT (Form C) contacts arranged to transfer upon removal of the housing cover or closure of the valve of more than two rotations of the valve stem.

2.7 FIRE DEPARTMENT CONNECTION

Fire department connection shall be projecting type with cast brass body, matching wall escutcheon lettered "Auto Spkr" with a polished brass finish. The connection shall have two inlets with individual self-closing clappers, caps with drip drains and chains. Female inlets shall have 2-1/2 inch diameter American National Fire Hose Connection Screw Threads (NH) per NFPA 1963 .

2.8 SPRINKLERS

Sprinklers with internal O-rings shall not be used. Sprinklers shall be used in accordance with their listed coverage limitations. Temperature classification shall be ordinary . Sprinklers in high heat areas including attic spaces or in close proximity to unit heaters shall have temperature classification in accordance with NFPA 13 . Extended coverage sprinklers shall not be used.

2.8.1 Concealed Sprinkler

Concealed sprinkler shall be white polyester quick-response type and shall have a nominal 1/2 inch or 17/32 inch orifice.

2.8.2 Recessed Sprinkler

Recessed sprinkler shall be chrome-plated quick-response type and shall have a nominal 1/2 inch or 17/32 inch orifice.

2.8.3 Pendent Sprinkler

Pendent sprinkler shall be of the fusible strut or glass bulb type, recessed quick-response type with nominal 1/2 inch orifice. Pendent sprinklers shall have a polished chrome finish.

2.8.4 Upright Sprinkler

Upright sprinkler shall be brass quick-response type and shall have a nominal 1/2 inch or 17/32 inch orifice.

2.8.5 Sidewall Sprinkler

Sidewall sprinkler shall have a nominal 1/2 inch orifice. Sidewall sprinkler shall have a polished chrome finish. Sidewall sprinkler shall be the quick-response type.

2.9 ACCESSORIES

2.9.1 Sprinkler Cabinet

Spare sprinklers shall be provided in accordance with NFPA 13 and shall be packed in a suitable metal or plastic cabinet. Spare sprinklers shall be representative of, and in proportion to, the number of each type and

Jacobs D3259802 SECTION 21 13 13.00 10 Page 9 temperature rating of the sprinklers installed. At least one wrench of each type required shall be provided.

2.9.2 Pendent Sprinkler Escutcheon

Escutcheon shall be one-piece metallic type with a depth of less than 3/4 inch and suitable for installation on pendent sprinklers. The escutcheon shall have a factory finish that matches the pendent sprinkler heads.

2.9.3 Pipe Escutcheon

Escutcheon shall be polished chromium-plated zinc alloy, or polished chromium-plated copper alloy. Escutcheons shall be either one-piece or split-pattern, held in place by internal spring tension or set screw.

2.9.4 Sprinkler Guard

Guard shall be a steel wire cage designed to encase the sprinkler and protect it from mechanical damage. Guards shall be provided on sprinklers located and hydraulic area as indicated on the drawings.

2.9.5 Identification Sign

Valve identification sign shall be minimum 6 inches wide by 2 inches high with enamel baked finish on minimum 18 gauge steel or 0.024 inch aluminum with red letters on a white background or white letters on red background. Wording of sign shall include, but not be limited to "main drain," "auxiliary drain," "inspector's test," "alarm test," "alarm line," and similar wording as required to identify operational components.

PART 3 EXECUTION

3.1 FIELD MEASUREMENTS

After becoming familiar with all details of the work, verify all dimensions in the field, and advise the Contracting Officer of any discrepancy before performing the work.

3.2 INSTALLATION REQUIREMENTS

The installation shall be in accordance with the applicable provisions of NFPA 13 , NFPA 24 and publications referenced therein. Installation of in-rack sprinklers shall comply with applicable provisions of NFPA 13 .

3.3 INSPECTION BY FIRE PROTECTION SPECIALIST

Prior to ceiling installation and concurrent with the Final Acceptance Test Report, certification by the Fire Protection Specialist that the sprinkler system is installed in accordance with the contract requirements, including signed approval of the Preliminary and Final Acceptance Test Reports. The Fire Protection Specialist shall: 1) inspect the sprinkler system periodically during the installation to assure that the sprinkler system is being provided and installed in accordance with the contract requirements, 2) witness the preliminary and final tests, and sign the test results, 3) after completion of the system inspections and a successful final test, certify in writing that the system has been installed in accordance with the contract requirements. Any discrepancy shall be brought to the attention of the Contracting Officer in writing, no later than three working days after the discrepancy is discovered.

Jacobs D3259802 SECTION 21 13 13.00 10 Page 10

3.4 ABOVEGROUND PIPING INSTALLATION

3.4.1 Protection of Piping Against Earthquake Damage

Seismically protect the system piping against damage from earthquakes.

This requirement is not subject to determination under NFPA 13 . Install the seismic protection of the system piping in accordance with UFC 3-301-01 , NFPA 13 and Annex A. Include the required features identified therein that are applicable to the specific piping system.

3.4.2 Piping in Exposed Areas

Install exposed piping without diminishing exit access widths, corridors or equipment access. Exposed horizontal piping, including drain piping, shall be installed to provide maximum headroom.

3.4.3 Piping in Finished Areas

In areas with suspended or dropped ceilings and in areas with concealed spaces above the ceiling, piping shall be concealed above ceilings.

Piping shall be inspected, tested and approved before being concealed.

Risers and similar vertical runs of piping in finished areas shall be concealed.

3.4.4 Pendent Sprinklers

Drop nipples to pendent sprinklers shall consist of minimum 1 inch pipe with a reducing coupling into which the sprinkler shall be threaded.

Hangers shall be provided on arm-overs to drop nipples supplying pendent sprinklers when the arm-over exceeds 12 inches for steel pipe or 6 inches for copper tubing. Where sprinklers are installed below suspended or dropped ceilings, drop nipples shall be cut such that sprinkler ceiling plates or escutcheons are of a uniform depth throughout the finished space. The outlet of the reducing coupling shall not extend more than 1 inch below the underside of the ceiling. On pendent sprinklers installed below suspended or dropped ceilings, the distance from the sprinkler deflector to the underside of the ceiling shall not exceed 4 inches.

Recessed pendent sprinklers shall be installed such that the distance from the sprinkler deflector to the underside of the ceiling shall not exceed the manufacturer's listed range and shall be of uniform depth throughout the finished area. Pendent sprinklers in suspended ceilings shall be a minimum of 6 inches from ceiling grid.

3.4.5 Upright Sprinklers

Riser nipples or "sprigs" to upright sprinklers shall contain no fittings between the branch line tee and the reducing coupling at the sprinkler.

Riser nipples exceeding 30 inches in length shall be individually supported.

3.4.6 Pipe Joints

Pipe joints shall conform to NFPA 13 , except as modified herein. Not more than four threads shall show after joint is made up.