USACE / NAVFAC / AFCESA / NASA UFGS-21 13 13.00 20 (April 2008)
--------------------------------
Preparing Activity: NAVFAC Superseding
UFGS-21 13 00.00 20 (April 2006)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 21 13 13.00 20
WET PIPE SPRINKLER SYSTEM, FIRE PROTECTION
04/08
NOTE: This guide specification covers the requirements for wet pipe fire protection
sprinkler systems.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer choices or locations where
text must be supplied by the designer.
PART 1 GENERAL
NOTE: The Designer will edit this section for either a performance-designed
system or a fully designed system as applicable.
This section is primarily intended for performance designed systems, i.e., systems
where the size, layout, and support of branch lines and cross mains, and the
layout of sprinklers will be designed by the Contractor.
The Designer will provide the following information in the contract documents
for performance designed systems. This information will be in accordance with
UFC 3-600-01. For NAVFAC projects, also include requirements of UFC 3-600-10N.
(1) Show the layout and size of all piping and equipment from the point of connection
to the water supply, to the sprinkler cross mains. The contract drawings must
include a detailed sprinkler riser diagram.
(2) Show location and size of service mains, interior feed mains, control valves,
sprinkler risers, drain lines, sectional valves, and inspector's test valves
and switches on the drawings.
(3) Specify waterflow data including hydrant flow results, including the location
where the hydrant flow test was conducted, the location and size of existing
mains and new water supply lines that will serve the sprinkler system (including
all supervisory valves), and the location and size of all risers.
(4) Highlight or clearly indicate the area(s) to be protected by sprinklers
on the drawings.
(5) Specify waterflow requirements including the design density, design area,
the hose stream demand (including location of the hose stream demand), the duration
of supply, and sprinkler spacing and area of coverage in this section.
(6) Show the location of the backflow preventer (including provisions for a
drain and access for maintenance) where the potable water supply system is at
risk of contamination by the sprinkler system on the drawings.
(7) Show all provisions necessary for forward flow testing of the backflow preventer
at system demand, as required by NFPA 13 on the drawings. Indicate location
of all components and required items, including test ports, for pressure measurements
both upstream and downstream of the backflow preventer, a drain to the building
exterior, and appropriate, permanent means of disposing of the large quantity
of water that will be involved in the initial test and subsequent annual tests.
(8) Highlight all concealed spaces on the drawings that require sprinkler protection,
such as spaces above suspended ceilings that are built of combustible material
or that can contain combustible materials, such as storage, and communication
cabling that is not fire-rated.
(9) Provide details on the drawings of pipe restraints for underground piping.
This includes details of pipe clamps, tie rods, mechanical retainer glands,
and thrust blocks. Include size of wall or floor sleeve if required to meet
earthquake requirements.
When connecting to an existing water distribution system, waterflow tests will
be conducted in accordance with UFC 3-600-01to determine available water supply
for the sprinkler system. The Designer of Record shall either perform or witness
the waterflow test. The waterflow test results (including date test is performed)
should be included in the Project Development Brochure; however it is critical
that the waterflow test results be included in the design documents no later
than the concept submission. Note that the availability of the Designer to
participate or witness the waterflow test will be necessary. The need for fire
pumps or a water tank can in many instances have a significant impact on the
amount programmed for design and construction of a facility.
A fully designed system will include the items listed above and all additional
information required that is required by UFC 3-600-01 and , NFPA 13 for a fully
operational system. For NAVFAC Projects this list also includes UFC 3-600-10N.
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
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.
[ASTM INTERNATIONAL (ASTM)ASTM D 709(2001; R 2007) Laminated Thermosetting Materials][FM GLOBAL (FM)FM P7825(2005) Approval Guide][NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)NFPA 13(2006; Errata 2007; Amendment 1 2008) Installation of Sprinkler SystemsNFPA 13R(2006) Installation of Sprinkler Systems in Residential Occupancies Up to and Including Four Stories in HeightNFPA 1963(2003) Standard for Fire Hose ConnectionsNFPA 24(2006) Standard for the Installation of Private Fire Service Mains and Their Appurtenances][UNDERWRITERS LABORATORIES (UL)UL 262(2004) Standard for Gate Valves for Fire-Protection ServiceUL 668(2004; Rev thru Aug 2008) Hose Valves for Fire Protection ServiceUL 789(2004; Rev thru Aug 2008) Indicator Posts for Fire-Protection ServiceUL Fire Prot Dir(2008) Fire Protection Equipment Directory]1.2 SYSTEM DESCRIPTION
NOTE: Combined sprinkler and standpipe systems shall be provided when required
by UFC 3-600-01.
This specification section does not include requirements for combined sprinkler
and standpipe systems. However; this specification in conjunction with the
project drawings can be expanded to include such systems.
Design and provide [new and modify existing] automatic wet pipe fire extinguishing sprinkler systems for complete
fire protection coverage throughout [the entire building][____]
NOTE: Residential Occupancies: NFPA 13R is applicable for residential occupancies
up to and including 4 stories in height. This standard should be referenced
and followed only for such occupancies. NFPA 13R differs from NFPA 13 relative
to type of sprinkler, design criteria, sprinkler coverage, etc. Care must be
taken when using this specification for residential occupancies to assure that
the final project specification clearly indicates design requirements.
NOTE: Residential Occupancies: For residential occupancies other than multistory
bachelor housing such as one and two family dwellings, the editor should consider
using Specification Section 21 21 00 FIRE EXTINGUISHING SPRINKLER SYSTEMS (RESIDENTIAL)
Do not use this specification section for sprinkler systems designed to the
the requirements of NFPA 13D
NOTE: For all NAVFAC administered projects, any construction on Navy or Marine
Corps facilities and any projects for the Air Force Air Combat Command (ACC);
include requirement to assume a 12-psi loss for the backflow preventer. For
all other projects use the second bracketed sentence.
1.3 SPRINKLER SYSTEM DESIGN
Except as modified herein,design automatic wet pipe fire extinguishing sprinkler systems in accordance with the
required and advisory provisions of [NFPA 13][NFPA 13R] , including all recommendations and advisory portions,
which shall be considered mandatory; this includes advisory provisions listed in the appendices of such standard(s),
as though the word "shall" had been substituted for the word "should" wherever it appears. Design system by
hydraulic calculations for uniform distribution of water over the design area. [Hydraulic calculations shall
assume a [ 80 kPa 12 psi ][____] pressure loss for the backflow preventer assembly.][Hydraulic calculations
shall assume the pressure loss for the backflow preventer assembly is the same as the losses indicated on the
manufacturer's data sheets.] Locate sprinklers in a consistent pattern with ceiling grid, lights, and air supply
diffusers. Provide sprinklers and piping system layout. All Devices and equipment for fire protection service
shall be UL Fire Prot Dir listed or FM P7825 approved for use in wet pipe sprinkler systems. [Provide seismic
protection for the sprinkler system. Design and install seismic protection in accordance with the requirements
of NFPA 13 section titled "Protection of Piping Against Damage Where Subject to Earthquakes."]
1.3.1 Location of Sprinklers
Sprinklers in relation to the ceiling and the spacing of sprinklers shall not exceed [that permitted by NFPA 13
for [____][ordinary][extra] hazard occupancy.][[____] sq meter ft per sprinkler.][the hazards indicated on the
contract drawings.] Uniformly space sprinklers on the branch piping. 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.
1.3.2 Water Distribution
Distribution shall be uniform throughout the area in which the sprinklers will open. Discharge from individual
sprinklers in hydraulically most remote area shall be between 100 percent and 120 percent of the specified density.
1.3.3 Density of Application of Water
NOTE: For all NAVFAC administered projects, any construction on Navy or Marine
Corps facilities and any projects for the Air Force Air Combat Command (ACC)
edit and utilize the following:
Size pipe to provide the specified density when the system is discharging the specified total maximum required
flow. Application to horizontal surfaces below the sprinklers shall be [[[____] L/m per sq meter gpm per sq
ft.][as indicated on the contract drawings.]]
NOTE: For Army Corps projects edit and utilize the following:
Size pipe to provide the specified density when the system is discharging the specified total maximum required
flow. Application to horizontal surfaces below the sprinklers shall be [4.1 L/min/sq meter0.10 gpm per sq ft
for Light Hazard Occupancies][6.1 L/min/sq meter 0.15 gpm per sq ft for Ordinary Hazard Group 1 Occupancies][
8.2 L/min/sq meter 0.20 gpm per sq ft for Ordinary Hazard Group 2 Occupancies][12.2 L/min/sq meter 0.30 gpm
per sq ft for Extra Hazard Group 1 Occupancies][16.3 L/min/sq meter 0.40 gpm per sq ft for Extra Hazard Group
2 Occupancies][[____] L/m per sq meter gpm per sq ft ][as indicated on the contract drawings.]
1.3.4 Sprinkler Discharge Area
NOTE: The first paragraph is utilized when sprinkler system designer will need
to make area adjustments required by NFPA 13. (i.e. increasing the design area
30% as required by NFPA 13 where ceiling slopes exceed 2 in 12 or decreasing
the design area if permissible by NFPA 13 for the installation quick response
sprinklers.) The second paragraph is used when the design area is reduced below
the UFC requirements and/or the contractor will be given a design area which
already includes the area increases/decreases.
[Permissible decreases and required increases from NFPA 13 shall be applied to an initial hydraulically most
remote area of [____] sq meter ft.]
[Area shall be the hydraulically most remote [____] sq meter ft Area reductions and increases from NFPA 13
shall not be applied to this area.]
1.3.5 Outside Hose Allowances
NOTE: Designer shall insert into brackets the hose stream allowance for the
most demanding hazard per UFC 3-600-01.
Hydraulic calculations shall include a hose allowance of [____] L/m gpm for outside hose streams
1.3.6 Water Supply
Base hydraulic calculations on [the water supply data shown on the fire protection contract drawings][the water
supply data shown on the contract drawings][a static pressure of [____] kPa (gage) psig with [____]L/m gpm available
at a residual pressure of [____] kPa (gage) psig] at the [junction with the existing water distribution piping
system.][base of the sprinkler piping riser.][ Base hydraulic calculations on operation of fire pumps provided
in Section 21 30 00 FIRE PUMPS.]
NOTE: Applications requiring multiple densities/design areas must be referred
to and shown on the drawings.
For sprinkler systems in residential occupancies, which are designed to NFPA
13R standards, paragraphs which address hydraulic design and sprinkler spacing
must be edited according to NFPA 13R requirements.
NOTE: The design must include an adequate water supply to meet the sprinkler
water demand. The designer must provide water flow test results and hydraulic
calculations to ensure that the system demand will be met.
Design Calculations: The designer will provide detailed hydraulic calculations
that clearly demonstrate that the water supply will meet the demand of the sprinkler
system and hose streams. Calculations will be submitted with the concept design
submission.
1.4 SUBMITTALS
NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on USACE projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for USACE projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for USACE projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are for [Contractor Quality Control approval.][information only. When used, a designation following the "G"
designation identifies the office that will review the submittal for the Government.]
Partial submittals and submittals not fully complying with the requirements and recommended practices of NFPA 13
and this specification section shall be returned disapproved without review. This contract stipulation is non-negotiable.
The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
SD-02 Shop Drawings
Shop Drawings[; G][; G, [_____]]
Prepare A1 841 x 594 mm 24 by 36 inch detail working drawings of sprinklers and piping. Floor
plans shall be drawn to a scale not less than 1:100 1/8" = 1'-0". 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. Show point to point electrical wiring diagrams. Submit drawings signed by a registered
fire protection engineer. Provide [three][_____] copies of the Sprinkler System Shop Drawings,
no later than [21][_____] days prior to the start of sprinkler system installation.
SD-03 Product Data
Pipe[; G][; G, [_____]]
[Fittings [; G][; G, [_____]]]
[Alarm valves [; G][; G, [_____]]]
Valves, including gate, check, and globe [; G][; G, [_____]]
[Water motor alarms [; G][; G, [_____]]]
Sprinklers [; G][; G, [_____]]
Pipe hangars and supports [; G][; G, [_____]]
Sprinkler Alarm Switches[; G][; G, [_____]]
Fire department connections [; G][; G, [_____]]
[Excess pressure pump [; G][; G, [_____]]]
Mechanical couplings [; G][; G, [_____]]
Backflow Prevention Assembly [; G][; G, [_____]]
Seismic Bracing [; G][; G, [_____]]
Annotate descriptive data to show the specific model, type, and size of each item. Catalog cuts shall also indicate
UL Listing/FM Approval and country of manufacture.
SD-05 Design Data
Hydraulic Calculations[; G][; G, [_____]]
NOTE: Include the bracketed item for Army Corps projects
Submit computer program generated hydraulic calculations to substantiate compliance with hydraulic
design requirements. Calculations shall be performed by computer using software intended specifically
for fire protection system design. [Calculations shall include isometric diagram indicating
hydraulic nodes and pipe segments.]Submit name of software program used.
SD-06 Test Reports
request to schedule Preliminary Tests[; G][; G, [_____]]
Preliminary Test Report[; G][; G, [_____]]
[Three][_____] copies of the completed Preliminary Test Report, no later that [7][_____] days
after the completion of the Preliminary Tests. The Preliminary Tests Report shall include both
the Contractor's Material and Test Certificate for Underground Piping and the Contractor's Material
and Test Certificate for Aboveground Piping. All items in the Preliminary Tests Report shall
be signed by the Fire Protection Engineer.
request to schedule Final Acceptance Test[; G][; G, [_____]]
Final Acceptance Test Report[; G][; G, [_____]]
[Three][_____] copies of the completed Final Acceptance Tests Reports, no later that [7][_____]
days after the completion of the Final Acceptance Tests. All items in the Final Acceptance
Report shall be signed by the Fire Protection Engineer.
SD-07 Certificates
Inspection by Fire Protection Engineer[; G][; G, [_____]]
Concurrent with the Final Acceptance Test Report, certification by the Fire Protection Engineer
that the sprinkler system is installed in accordance with the contract requirements, including
signed approval of the Preliminary and Final Acceptance Test Reports.
Fire Protection Engineer[; G][; G, [_____]]
The name and documentation of certification of the proposed Fire Protection Engineer, no later
than 14 days [_____] after the Notice to Proceed and prior to the submittal of the sprinkler
system drawings and hydraulic calculations.
Sprinkler System Installer[; G][; G, [_____]]
Submit data showing the Sprinkler System Installer has successfully installed systems of the
same type and design as specified herein, Data shall include names and locations of at least
two installations where the Contractor, or the subcontractor referred to above, has installed
such systems. Indicate type and design of each system and certify that each system has performed
satisfactorily in the manner intended for not less than 18 months. Provide NICET certification
of the system technician. Contractor shall submit data along with submittal of the Fire Protection
Engineer Qualifications.
SD-10 Operation and Maintenance Data
Operating and Maintenance Instructions
Submit in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA as supplemented and
modifies by this specification section.
Provide [six][_____] manuals in accordance with NFPA 13. The manuals shall include the manufacturer's
name, model number, parts list, list of parts and tools that should be kept in stock by the
owner for routine maintenance including the name of a local supplier, simplified wiring and
controls diagrams, troubleshooting guide, and recommended service organization (including address
and telephone number) for each item of equipment. [Each service organization submitted shall
be capable of providing [4][_____] hour on-site response to a service call on an emergency basis.]
SD-11 Closeout Submittals
As-built drawings
As-built shop drawings, at no later than [14][_____] days after completion of the Final Tests.
The Sprinkler System Drawings shall be updated to reflect as-built conditions after all related
work is completed. Provide electronic drawings in dwg or pdf format.
On-site training
1.5 QUALIFICATIONS
1.5.1 Fire Protection Engineer
NOTE: Utilize the bracketed verbiage for USACE projects only. DO NOT utilize
the bracketed verbiage for NAVFAC projects.
A Fire Protection Engineer is a registered professional engineer (P.E.) who has passed the fire protection engineering
written examination administered by the National Council of Examiners for Engineering and Surveys (NCEES)[ or
a registered P.E. in a related engineering discipline with a minimum of 5 years experience, dedicated to fire
protection engineering that can be verified with documentation.]
1.5.2 Sprinkler System Installer
NOTE: NICET Level IV certified technician shall be selected below when warranted
by system complexity.
The Sprinkler System Installer shall be regularly engaged in the 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. Installation drawings, shop drawings
and as-built drawings shall be prepared, by or under the supervision of, an system technician 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][Level IV] certification
in Automatic Sprinkler System program or by a fire protection engineer.
1.6 QUALITY ASSURANCE
1.6.1 Material and Equipment Qualifications
Provide materials and equipment that are standard products of manufacturers regularly engaged in the manufacture
of such products, which are of a similar material, design and workmanship. Standard products shall have been
in satisfactory commercial or industrial use for 2 years prior to bid opening. The 2-year use shall include
applications of equipment and materials under similar circumstances and of similar size. The product shall have
been for sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the
2 year period.
1.6.2 Alternative Qualifications
Products having less than a two-year field service record will be acceptable if a certified record of satisfactory
field operation for not less than 6000 hours, exclusive of the manufacturer's factory or laboratory tests, can
be shown.
1.6.3 Manufacturer's Nameplate
Each item of equipment shall have a nameplate bearing the manufacturer's name, address, model number, and serial
number securely affixed in a conspicuous place; the nameplate of the distributing agent will not be acceptable.
1.6.4 Field Fabricated Nameplates
NOTE: Use the following paragraph where nameplates are fabricated to identify
specific equipment designated on the drawings.
ASTM D 709. Provide laminated plastic nameplates for each equipment enclosure, relay, switch, and device; as
specified in the technical sections or as indicated on the drawings. Each nameplate inscription shall identify
the function and, when applicable, the position. Nameplates shall be melamine plastic, 3 mm (0.125 inch) 0.125
inch thick, white with [black][_____] center core. Surface shall be matte finish. Corners shall be square.
Accurately align lettering and engrave into the core. Minimum size of nameplates shall be 25 by 65 mm (one by
2.5 inches) one by 2.5 inches. Lettering shall be a minimum of 6.35 mm (0.25 inch) 0.25 inch high normal block
style.
1.7 ACCESSIBILITY
NOTE: The following requirement is intended to solicit the installer's help
in the prudent location of equipment when he has some control over locations.
However, designer's should not rely on it at all since enforcing this requirement
in the field would be difficult. Therefore, the system designer needs to layout
and indicate the locations of equipment, control devices, and access doors so
that most of the accessibility questions are resolved inexpensively during design.
Install all work so that parts requiring periodic inspection, operation, maintenance, and repair are readily
accessible. Install concealed valves, expansion joints, controls, dampers, and equipment requiring access, in
locations freely accessible through access doors.
1.8 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.
PART 2 PRODUCTS
2.1 UNDERGROUND PIPING COMPONENTS
NOTE: The contract drawings must show the service connection details and the
underground water mains for the sprinkler system. The drawings must show details
of the water service point-of-entry into the building and through the floor
slab, and underground piping restraints, including number and size of restraining
rods and thrust blocks.
2.1.1 Pipe
Pipe shall comply with NFPA 24. Minimum pipe size shall be 150 mm 6 inches. Piping more than 1.50 meters 5
feet outside the building walls shall comply with Section 33 11 00 WATER DISTRIBUTION.
NOTE: Paragraphs 2.1.2 & 2.1.3 will be deleted if underground valves are
either not required or are specified elsewhere.
[2.1.2 Gate Valve and Indicator Posts
Installation shall comply with NFPA 24. Gate valves for use with indicator post shall conform to UL 262. Indicator
posts shall conform to UL 789. Provide each indicator post with one coat of primer and two coats of red enamel
paint. ]
[2.1.3 Valve Boxes
Except where indicator posts are provided, for each buried valve, provide cast-iron, ductile-iron, or plastic
valve box of a suitable size. Plastic boxes shall be constructed of acrylonitrile-butadiene-styrene (ABS) or
inorganic fiber-reinforced black polyolefin. Provide cast-iron, ductile-iron, or plastic cover for valve box
with the word "WATER" cast on the cover. The minimum box shaft diameter shall be 133 mm 5.25 inches. Coat
cast-iron and ductile-iron boxes with bituminous paint applied to a minimum dry-film thickness of 0.254 mm 10
mils.]
2.1.4 Buried Utility Warning and Identification Tape
Provide detectable aluminum foil plastic backed tape or detectable magnetic plastic tape manufactured specifically
for warning and identification of buried piping. Tape shall be detectable by an electronic detection instrument.
Provide tape in rolls, 80 mm 3 inches minimum width, color coded for the utility involved with warning and
identification imprinted in bold block letters continuously and repeatedly over the entire tape length. Warning
and identification shall read "CAUTION BURIED WATER PIPING BELOW" or similar wording. Use permanent code and
letter coloring unaffected by moisture and other substances contained in trench backfill material.
2.2 ABOVEGROUND PIPING COMPONENTS
NOTE: The following are basic restrictions on the use of plastic pipe:
a. For Navy Projects CPVC may only be used in residential occupancies where
piping is concealed by gypsum or plaster construction, and installed in accordance
with product listing.
b. For USACE projects, plastic piping will only be used in light hazard occupancies
and in residential occupancies.
c. Plastic piping will not be used in combustible concealed spaces that are
required to be sprinklered.
d. Plastic piping will not be used in spaces where ambient temperature exceed
65 Degrees C (150 Degrees F).
e. Plastic piping must be protected, as a minimum, by either (1) one layer
of 9.525 mm (3/8 inch) thick gypsum board, or (2) a suspended membrane ceiling
with lay-in ceiling panels or tiles having a weight of not less than 1.7 kilogram
per square meter (0.35 psf) installed on metallic support grids, or by other
method approved by UL. Method or protection of piping must be indicated and
detailed in the contract documents.
f. Plastic pipe will not be used where water pressure surges could exceed 1207
kPa (175 psi).
g. Plastic piping will not be used in areas where the system could be subject
to impact or physical stress or abuse.
h. Plastic piping can be used only in wet pipe sprinkler systems.
i. Quick response sprinklers will be used with plastic piping.
All components of the aboveground piping shall fully comply with the requirements and recommended practices of
NFPA 13 and this specification section. Aboveground piping shall be steel [or copper][, copper, or plastic].
2.2.1 Steel Pipe
NOTE: Specify steel piping exposed to the weather or corrosive atmospheres
to be galvanized or properly protected against corrosive effects. If galvanized
pipe is specified all piping must be specified as schedule 40: Galvanized pipe
must not be rolled grooved and cut grooving of Schedule 10 & 30 pipe is
not permitted.
NOTE: For NAVFAC administered projects, any construction on Navy or Marine
Corps facilities and any projects for the Air Force Air Combat Command (ACC)
include requirement for pipe to be rigid.
Pipe shall be[ rigid][black steel.][galvanized steel.] Steel piping shall be Schedule [10] or [40] for sizes
less than 200 mm 8 inches [and Schedule [10][30][40] for sizes 200 mm 8 inches or larger]. [Steel pipe shall
be Schedule 40 for sizes less than 75 mm 3 inches and Schedule [10][30][40] for sizes 75 mm 3 inches or larger.]
Fittings into which sprinklers, sprinkler riser nipples, or drop nipples are threaded shall be welded, threaded,
or grooved-end 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 permitted. Rubber gasketed grooved-end pipe and
fittings with mechanical couplings shall be permitted in pipe sizes 40 mm 1.5 inches and larger. 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.][Sprinkler
pipe and fittings shall be metal.] [Roll grooving of galvanized pipe is prohibited]
2.2.2 Grooved Mechanical Joints and Fittings
Grooved couplings, fittings and grooving tools shall be products of the same manufacturer.
NOTE: Include the following for Army Corps projects. The use of flexible sprinkler
hose is not permitted for NAVFAC administered projects, any construction on
Navy or Marine Corps facilities and any projects for the Air Force Air Combat
Command (ACC)
2.2.3 Flexible Sprinkler Hose
The use of flexible sprinkler hose is permissible.
[2.2.4 Plastic Pipe and Fittings
Plastic pipe shall be Chlorinated polyvinyl chloride (CPVC)]
2.2.5 Sprinklers
Provide nominal 12.7 mm 0.50 inch or 13.5 mm 0.53 inch orifice sprinklers. Sprinklers with internal O-rings
shall not be used. Sprinklers shall be used in accordance with their listed coverage limitations. [Provide
[Concealed][Recessed][Flush][Pendent][Upright][Sidewall][Residential][quick response] sprinklers.] Sprinklers
shall have a [brass][polished chrome][stainless steel][white polyester][_____] finish. Temperature classification
shall be [ordinary][intermediate][_____][as indicated]. 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. [Provide corrosion-resistant sprinklers and sprinkler guards as required
by NFPA 13.] Deflector shall not be more than 80 mm 3 inches below suspended ceilings. Ceiling plates shall
not be more than 12.7 mm 0.5 inch deep. Ceiling cups shall not be permitted.
2.2.6 Valves
Provide valves of types approved for fire service. Valves shall open by counterclockwise rotation. [Provide
[a rising stem][an OS&Y][a butterfly][a wall indicator] valve beneath each alarm.] Check valves shall be
clear opening swing-check type with inspection and access cover plate for sizes 200 mm 8 inches and larger. [Each
control valve shall be electrically supervised; minimum contact ratings shall be 2.5 amps at 24 volts DC. Provide
supervision against valve closure or tampering of valve.]
NOTE: For NAVFAC projects, alarm valves and water motor gongs are rarely necessary.
These items should only be utilized when multiple remotely located risers serve
a single building or when requested by the base fire department. Consult with
the cognizant NAVFAC fire protection engineer before including these two items.
2.2.7 Pipe Supports
Provide Pipe hangars and supports and [Seismic Bracing] in accordance with NFPA 13.
[2.2.8 Alarm Valves
Provide variable pressure type alarm check valve, standard trim piping, pressure gauges, bypass, retarding chamber,
testing valves, main drain, and other components as required for a fully operational system.]
[2.2.9 Water Motor Alarms
Provide alarms of the approved weatherproof and guarded type, to sound locally on the flow of water in each corresponding
sprinkler system. Mount alarms on the outside of the outer walls of each building at a location as directed.
Provide separate drain piping directly to exterior of building.]
2.2.10 Fire Department Connections
Fire department connection shall be [projecting][flush] type with cast brass body, matching wall escutcheon lettered
"Auto Spkr" with a [polished brass][chromium plated] finish. The connection shall have two inlets with individual
self-closing clappers, caps with drip drains and chains. Female inlets shall have 65 mm 2-1/2 inch diameter
American National Fire Hose Connection Screw Threads (NH) per [NFPA 1963][_____].
2.2.11 Backflow Prevention Assembly
Provide listed [reduced pressure principle][double check] valve assembly backflow preventer. Each check valve
shall have a drain. Backflow prevention assemblies shall have current "Certificate of Approval from the Foundation
for Cross-Connection Control and Hydraulic Research, FCCCHR List. Listing of the specific make, model, design,
and size in the FCCCHR List shall be acceptable as the required documentation."
[2.2.12 Excess Pressure Pump
NOTE: Use pump only when building water supply is subject to extreme water
pressure fluctuations.
Provide pumps on each sprinkler piping riser. Pumps shall be of the positive displacement, gear type rated at
63 mL/s one gpm, integrally mounted with motor. Pump and motor unit shall be approved for automatic wet pipe
fire extinguishing sprinkler systems and shall be complete with pilot light panel, differential motor control
switch, high pressure switch, and low pressure switch. Provide electrical power supply connections for pump
and pilot light panel at the supply side of building service panel; provide a separate fused safety-type switch
with locked lever for each connection. Provide pressure pump sensing piping in supply piping [upstream of fire
pump].]
2.3 ALARM INITIATING AND SUPERVISORY DEVICES
NOTE: Water motor alarms and pressure alarm switches can be used only with
an alarm check valve. Vane type waterflow indicators can be used with or without
an alarm check valve and are often used for zoning of the system, e.g., building
wings or floors.
To permit testing of each alarm device, the designer will indicate a separate
inspector's test connection for each device. Coordinate selections and delete
inapplicable devices.
2.3.1 Sprinkler Alarm Switches
Provide [pressure][and][or][vane] type flow switch(es) with circuit opener or closer for the automatic transmittal
of an alarm over the facility fire alarm system. Connection of switch shall be under Section [
28 31 73.00 20 EXTERIOR FIRE ALARM SYSTEM][28 31 74.00 20 INTERIOR FIRE ALARM SYSTEM.][ 28 31 63.00 20 ANALOG/ADDRESSABLE
INTERIOR FIRE ALARM SYSTEM][28 31 76 INTERIOR FIRE ALARM AND MASS NOTIFICATION SYSTEM][Vane type Alarm actuating
devices shall have mechanical diaphragm controlled retard device adjustable from 10 to 60 seconds and shall instantly
recycle.] [Flow switches for elevator power shunt shall have no retard feature. Provide properly lettered and
approved metal sign to elevator flow switch stating the circuits' voltage, and identify the switch as an "Elevator
Power Shunt Flow Switch".]
2.3.2 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.
2.4 ACCESSORIES
2.4.1 Sprinkler Cabinet
Provide metal cabinet with extra sprinklers[, including a representative sample of dry pendent type sprinklers]
and sprinkler wrench adjacent to each alarm valve. The number and types of extra sprinklers shall be as specified
in NFPA 13.
2.4.2 Pipe Escutcheon
Provide split hinge metal plates for piping entering walls, floors, and ceilings in exposed 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.
PART 3 EXECUTION
3.1 INSPECTION BY FIRE PROTECTION ENGINEER
The Fire Protection Engineer shall inspect the sprinkler system periodically during the installation to assure
the sprinkler system is being provided and installed in accordance with the contract requirements and the approved
sprinkler system submittal(s). The Fire Protection Engineer shall attend both the preliminary and final tests,
and shall sign the test results. After the preliminary testing has been completed, the Fire Protection Engineer,
shall certify in writing the system is ready for the final inspections and tests. This report shall document
any discrepancies found and what actions will be taken to correct. Any discrepancy noted during the periodic
site visits or the preliminary testing shall be brought to the attention of the Contracting Officer in writing,
no later than three working days after the discrepancy is discovered.
3.2 UNDERGROUND PIPING INSTALLATION
The methods of fabrication and installation of the underground piping shall fully comply with the requirements
and recommended practices of NFPA 13, NFPA 24 and the contract drawings.
3.3 ABOVEGROUND PIPING INSTALLATION
The methods of fabrication and installation of the aboveground piping shall fully comply with the requirements
and recommended practices of NFPA 13 and this specification section.
3.3.1 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.
3.3.2 Pendent Sprinklers
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 25 mm 1 inch below the underside of the ceiling. Pendent sprinklers in suspended
ceilings shall be a minimum of 150 mm 6 inches from ceiling grids.
NOTE: The following paragraph is unnecessary for NAVFAC projects
[3.3.3 Pipe Joints
Pipe joints shall conform to NFPA 13, except as modified herein. Welded joints will be permitted, only if welding
operations are performed as required by NFPA 13 at the Contractor's fabrication shop, not at the project construction
site. Flanged joints shall be provided where indicated or required by NFPA 13. Grooved pipe and fittings shall
be prepared in accordance with the manufacturer's latest published specification according to pipe material,
wall thickness and size. Grooved couplings, fittings and grooving tools shall be products of the same manufacturer.
The diameter of grooves made in the field shall be measured using the method specifically approved by the coupling
manufacturer for the intended application. Groove width and dimension of groove from end of pipe shall be measured
and recorded for each change in grooving tool setup to verify compliance with coupling manufacturer's tolerances.
[A representative of the grooved couplings and fittings manufacturer shall conduct at least one onsite inspection
of the piping installation to ensure the method of installation is in accordance with the manufacturer's requirements
and recommended practices.]]
3.3.4 Reducers
Reductions in pipe sizes shall be made with one-piece tapered reducing fittings. Bushings are prohibited.
3.3.5 Pipe Penetrations
Cutting structural members for passage of pipes or for pipe-hanger fastenings will not be permitted. Pipes that
must penetrate concrete or masonry walls or concrete floors shall be core-drilled and provided with pipe sleeves.
Each sleeve shall be Schedule 40 galvanized steel, ductile iron or cast iron pipe and shall extend through its
respective wall or floor and be cut flush with each wall surface. Sleeves shall provide required clearance between
the pipe and the sleeve per NFPA 13. The space between the sleeve and the pipe shall be firmly packed with mineral
wool insulation. Where pipes penetrate fire walls, fire partitions, or floors, pipes shall be fire stopped in
accordance with Section 07 84 00 FIRESTOPPING. In penetrations that are not fire-rated or not a floor penetration,
the space between the sleeve and the pipe shall be sealed at both ends with plastic waterproof cement that will
dry to a firm but pliable mass or with a mechanically adjustable segmented elastomer seal.
3.3.6 Inspector's Test Connection
NOTE: Designer will indicate location of the inspector's test connections and
all associated valves on the contract drawings, and will provide details of
drain piping, if drain piping is needed.
Provide test connections approximately 2 meters 6 feet above the floor for each sprinkler system or portion
of each sprinkler system equipped with an alarm device. Provide test connection piping to a drain location that
can accept full flow where the discharge will be readily visible and where water may be discharged without property
damage. Discharge to floor drains, janitor sinks or similar fixtures shall not be permitted. Provide discharge
orifice of same size as corresponding sprinkler orifice. [The penetration of the exterior wall shall be no greater
than [0.61 meter2 feet][_____] above finished grade.]
3.3.7 Backflow Preventer Test Connection
Provide downstream of the backflow prevention assembly UL 668 hose valves with 65 mm 2.5 inch National Standard
male hose threads with cap and chain. Provide one valve for each 16 L/s 250 gpm of system demand or fraction
thereof. Provide a permanent sign in accordance with paragraph entitled "Identification Signs" which reads,
"Test Valve."
3.3.8 Drains
Main drain piping shall be provided to discharge [at a safe point outside the building][at the location indicated].
Auxiliary drains shall be provided as required by NFPA 13.
3.3.9 Installation of Fire Department Connection
Connection shall be mounted [on the exterior wall approximately 900 mm 3 feet above finished grade][adjacent
to and on the sprinkler system side of the backflow preventer]. The piping between the connection and the check
valve shall be provided with an automatic drip in accordance with NFPA 13 and arranged to drain to the outside.
3.3.10 Identification Signs
Signs shall be affixed to each control valve, inspector test valve, main drain, auxiliary drain, test valve,
and similar valves as appropriate or as required by NFPA 13. Valve identification signs shall be minimum 150
mm wide x 50 mm high 6 inches wide x 2 inches high with enamel baked finish on minimum 1.214 mm 18 gauge steel
or 0.6 mm 0.024 inch aluminum with red letters on a white background or white letters on red background. Hydraulic
design data nameplates shall be permanently affixed to each sprinkler riser as specified in NFPA 13.
3.4 ELECTRICAL WORK
NOTE: Coordinate power and alarm requirements with the contract drawings and
other specification sections.
Except as supplemented and modified herein, electric equipment and wiring shall be in accordance with Section
26 20 00 INTERIOR DISTRIBUTION SYSTEM. [Alarm signal wiring connected to the building fire alarm control system
shall be in accordance with [Section 28 31 00.00 10 FIRE DETECTION AND ALARM SYSTEM, DIRECT CURRENT LOOP][and][Section
28 31 64.00 10 FIRE DETECTION AND ALARM SYSTEM, ADDRESSABLE.]][ 28 31 63.00 20 ANALOG/ADDRESSABLE INTERIOR FIRE
ALARM SYSTEM][28 31 76 INTERIOR FIRE ALARM AND MASS NOTIFICATION SYSTEM]
3.5 PIPE PAINTING AND COLOR CODE MARKING
NOTE: Designer will coordinate color code marking with Section 09 90 00 PAINTS
AND COATINGS. Color code marking for piping which are not listed in Table I
of UFGS Section 09 90 00 will be added to the table.
Paint and color code mark sprinkler piping system as specified in Section 09 90 00 PAINTS AND COATINGS.
3.6 PRELIMINARY TESTS
The system, including the underground water mains, and the aboveground piping and system components, shall be
tested to assure that equipment and components function as intended. The underground and aboveground interior
piping systems and attached appurtenances subjected to system working pressure shall be tested in accordance
with NFPA 13 and NFPA 24.
Submit request to schedule Preliminary Tests, no later than [14][_____] days prior to the proposed start of
the tests. Upon completion of specified tests, the Contractor shall submit for approval a Preliminary Test Report
.
3.6.1 Underground Piping
3.6.1.1 Flushing
Underground piping shall be flushed in accordance with NFPA 24.
3.6.1.2 Hydrostatic Testing
New underground piping shall be hydrostatically tested in accordance with NFPA 24.
3.6.2 Aboveground Piping
3.6.2.1 Hydrostatic Testing
Aboveground piping shall be hydrostatically tested in accordance with NFPA 13.
3.6.2.2 Backflow Prevention Assembly Forward Flow Test
Each backflow prevention assembly shall be tested at system flow demand, including all applicable hose streams,
as specified in NFPA 13. The Contractor shall provide all equipment and instruments necessary to conduct a complete
forward flow test, including65 mm 2.5 inch diameter hoses, playpipe nozzles, calibrated pressure gauges, and
pitot tube gauge. The Contractor shall provide all necessary supports to safely secure hoses and nozzles during
the test. At the system demand flow, the pressure readings and pressure drop (friction) across the assembly
shall be recorded. A metal placard shall be provided on the backflow prevention assembly that lists the pressure
readings both upstream and downstream of the assembly, total pressure drop, and the system test flow rate determined
during the preliminary testing. The pressure drop shall be compared to the manufacturer's data and the readings
observed during the final inspections and tests.
3.7 FINAL ACCEPTANCE TEST
Final Acceptance Test shall begin only when the Preliminary Test Report has been approved. Submit request to
schedule Final Acceptance Test, no later than [14][_____] days prior to the proposed start of the tests. Notification
shall include a copy of the Contractor's Material & Test Certificates.
NOTE: Do not use the following verbiage for NAVFAC projects
[The Fire Protection Engineer shall conduct the Final Acceptance Test and shall provide a complete demonstration
of the operation of the system.] This shall include operation of control valves and flowing of inspector's test
connections to verify operation of associated waterflow alarm switches. After operation of control valves has
been completed, the main drain test shall be repeated to assure that control valves are in the open position.
In addition, the representative shall have available copies of as-built drawings and certificates of tests previously
conducted. The installation shall not be considered accepted until identified discrepancies have been corrected
and test documentation is properly completed and received. The Contractor shall submit the Final Acceptance
Test Report as specified in the Submittals paragraph.
NOTE: Use the following verbiage for NAVFAC projects
An experienced technician regularly employed by the system installer shall be present during the inspection.
The Fire Protection Engineer shall attend the final inspections and tests. At this inspection, repeat any or
all of the required tests as directed. Correct defects in work provided by the Contractor, and make additional
tests until the systems comply with contract requirements. Furnish appliances, equipment, [water,] electricity,
instruments, connecting devices, and personnel for the tests. [The Government will furnish water for the tests.]
The [_____] Division, Naval Facilities Engineering Command, Fire Protection Engineer, will witness formal tests
and approve systems before they are accepted.
3.8 ON-SITE TRAINING
NOTE: The number of hours of instruction should be determined based of the
number and complexity of the systems specified.
Submit request to schedule the On-site Training, at least 14 [_____] days prior to the start of related training
but prior to the final inspections and tests. The sprinkler contractor shall conduct a training course for operating
and maintenance personnel as designated by the Contracting Officer. Training shall be provided for a period
of [_____] hours of normal working time and shall start after the system is functionally complete and after the
Final Acceptance Test. The On-Site Training shall cover all of the items contained in the approved Operating
and Maintenance Instructions.
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