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READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 13: SPECIAL CONSTRUCTION]{.underline}

SECTION 13930 - WET PIPE FIRE SUPPRESSION SPRINKLERS

USE: Designing, furnishing, installing, and modifying automatic wet pipe
fire extinguishing sprinkler systems.

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[\_\_\_\_\_\] provide for information
to be inserted, as appropriate, to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface**,
and *italics*, within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately.)

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED.** Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name of the Project (upper and lower
case)**. Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specification that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST
110, or call (303) 987-6868.

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 11/01

Metric:

Technical Update: Unknown

SECTION 13930

WET PIPE FIRE SUPPRESSION SPRINKLERS

[PART 1: GENERAL]{.underline}

1.1 SUMMARY

A. Section Includes: \[Designing,\] \[furnishing,\] \[and\]
\[installing\] \[and\] \[modifying existing\] automatic wet pipe fire
extinguishing sprinkler systems.

1.2 SYSTEM DESCRIPTION

A. Requirements: The wet pipe fire extinguishing sprinkler system shall
be for \[[ ]{.underline} hazard occupancy\] \[uniform distribution of
water by hydraulic design\] to afford complete fire protection coverage
throughout [ ]{.underline}. The design, equipment, materials,
installation, and workmanship shall be according to the provisions of
NFPA 13, except as modified herein.

1.3 SUBMITTALS

A. General: Submittals shall be according to \[Section 01300 -
Submittals.\] \[Section 1365 - Certificates of Conformance.\]

B. Manufacturer\'s Literature: Submit \[\_\_\_\_\] copies of the
manufacturer\'s descriptive data for the following items to be used on
this project.

1\. Pipe, fittings, and mechanical couplings

2\. Alarm valves

3\. Valves, including gate, check, and globe

4\. Water‑motor alarms

5\. Sprinkler heads

6\. Pipe hangers

7\. Pressure switch

8\. Fire department inlet connection

C. Maintenance Instructions: Submit \[\_\_\_\_\] copies of the
manufacturer\'s maintenance instructions for the Alarm valves and excess
pressure pump to be used on this project.

D. Shop Drawings: Submit \[\_\_\_\_\] copies of shop drawings for
sprinkler system layout to be used on this project. \[Drawings shall be
prepared by and bear the stamp of a \[registered
\[\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\] engineer\] \[licensed architect.\]
\[Shop drawings shall \[\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\].\] \[A bill of
materials shall be furnished with the shop drawings.\] Include

a schedule showing the location of \[\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.\]
Drawings shall be \[same\] \[larger\] scale as the full size Contract
Drawings.

E. Certificates of Conformance: Submit \[\_\_\_\_\] copies of
Certificates of Conformance according to Section 01331 - Certificates
for Contractor\'s material and test certificates.

F. Hydraulic Calculations: Submit \[\_\_\_\_\] copies of the hydraulic
calculations for uniform distribution of water over the design area.

[PART 2: PRODUCTS]{.underline}

2.1 DESIGN OF SPRINKLER SYSTEMS

A. Criteria: The design of wet pipe for extinguishing sprinkler systems
shall be by \[pipe schedules for \[[ ]{.underline}\] hazard occupancy\]
\[or\] \[hydraulic calculations for uniform distribution of water over
the design area\] and shall conform to NFPA 13 and the requirements as
specified herein.

B. Distribution of Water: Distribution shall be essentially uniform
throughout the area in which it is assumed the sprinkler heads will
open. Variation in discharge from individual heads in the hydraulically
most remote area shall be between 100 and 120 percent of the specified
density.

C. Density Application of Water: 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 \[[ ]{.underline}\] gpm per square foot.

D. Sprinkler Discharge Area: Area shall be the hydraulically most remote
\[[ ]{.underline}\] square feet area as defined in NFPA 13.

E. Outside Hose Allowances: Hydraulic calculations shall include an
allowance of \[[ ]{.underline}\] gpm for outside hose streams.

F. Friction Losses: Calculate losses in pipe in accordance with the
Hazen ‑ Williams formula with \'C\' value of \[120 for steel pipe\],
\[150 for copper tube\], \[140 for buried cement‑lined ductile‑iron pipe
and asbestos cement pipe.\]

G. Location of Sprinkler Heads: Heads in relation to the ceiling and the
spacing of sprinkler heads shall not exceed \[that permitted by NFPA 13
for \[[ ]{.underline}\] hazard occupancy.\] \[[ ]{.underline}\] square
feet per head.\]\] The spacing of sprinklers on the branch lines shall
be essentially uniform.

H. Water Supply: Base hydraulic calculations on a static pressure of \[[
]{.underline}\] psig with \[[ ]{.underline}\] gpm being available at a
residual pressure of \[[ ]{.underline}\] psig at the \[junction with the
distribution system.\] \[base of the riser.\]

2.2 EQUIPMENT

A. Sprinkler Heads: Heads shall have nominal 0.50‑inch \[or 0.53‑inch\]
orifice. Release element of each head shall be of the intermediate
temperature rating or higher as suitable for the individual location
where it is installed. Provide chromium‑plated ceiling plates and
pendent sprinklers below suspended ceilings. \[Provide
corrosion‑resistant sprinkler heads and sprinkler head guards as
required by NFPA 13.\]

B. Cabinet: Provide extra sprinkler heads and sprinkler head wrench in a
metal cabinet adjacent to the alarm valve within each building. The
number and types of extra sprinkler heads shall be as specified in NFPA
13.

C. Alarm Valve: Provide variable pressure type alarm valve complete with
retarding chamber, alarm test valve, alarm shut‑off valve, drain valve,
pressure gauges, accessories, and appurtenances necessary for the proper
operation of the system.

D. Water Motor Alarm: Provide alarms of the approved weatherproof and
guarded type, to sound locally on the flow of water in each sprinkler
system to which it is connected. Mount alarms on the outside of the
outer walls of each building, at a location as directed.

E. Pressure Switch: Provide switch with circuit opener or closer for the
automatic transmittal of an alarm over the facility fire alarm system
and connect into the fire alarm system. Alarm actuating device shall be
of the mechanical diaphragm controlled water pressure type with retard
device adjustable from 10 to 60 seconds and shall be of a type which
instantly recycles when pressure is released on the diaphragm. Install
the switch in the alarm valve trim ahead of all valves so that the
switch cannot be shut off.

2.3 ABOVE GROUND PIPING SYSTEMS

A. Pipe and Fittings: Inspect, test, and approve piping before burying,
covering, or concealing. Provide fittings for changes in direction of
piping and for all connections. Make changes in piping sizes through
tapered reducing pipe fittings; the use of bushings will not be
permitted. Welding shall be performed in the shop; field welding will
not be permitted.

B. Sprinkler Pipe and Fittings: NFPA 13, \[except as modified herein.\]
\[except steel piping shall be Schedule 40 for sizes less than 8 inches,
and Schedule 30 or 40 for sizes 8 inches and larger.\] Fittings into
which sprinkler heads, sprinkler head riser nipples, or drop nipples are
threaded shall be welded, threaded, or grooved‑end type. Use of
plain‑end fittings with mechanical couplings (which utilize 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 1.25 inches and
larger; fittings shall be UL 213 listed for use in sprinkler systems.

C. Pipe Hangers: Shall be according to NFPA 13.

D. Valves: Shall be as required by NFPA 13 and of types approved for
fire service. Gate valves shall open by counterclockwise rotation. Check
valves shall be flanged clear opening swing check type with flanged
inspection and access cover plate for sizes 4 inches and larger. Provide
\[an OS&Y\] \[a wall indicator\] valve beneath each alarm valve in each
riser when more than one alarm valve is supplied form the same water
supply pipe.

E. Identification Signs: Attach properly lettered approved metal signs
conforming to NFPA 13 to each valve and alarm device. \[Permanently
affix hydraulic design data nameplates to the riser of each system.\]

F. Inspector\'s Test Connection: Shall be approximately 6 feet above the
floor for each sprinkler system or portion of each sprinkler system
equipped with an alarm device and locate at the hydraulically most
remote part of each system. Test connection piping shall be at a
location where the discharge will be readily visible and where water may
be discharged without damage.

G. Main Drains: Drain piping to discharge at safe points outside each
building or to sight cones attached to drains of adequate size to
readily receive the full flow from each drain under maximum pressure.
Provide auxiliary drains as required by NFPA 13.

H. Pipe Sleeves: Provide where piping passes through walls, floors,
roofs, and partitions. Secure sleeves in proper position and location.
Provide sleeves of sufficient length to pass through entire thickness of
walls, floors, roofs, and partitions. Provide not less than 0.25‑inch
space between exterior of piping or pipe insulation and interior of
sleeve. Firmly pack space with insulation and caulk at both ends of the
sleeve with plastic waterproof cement which will dry to a firm but
pliable mass, or provide a segmented elastomeric seal.

1\. Sleeves in Masonry and Concrete Walls, Floors and Roofs: Shall be
ASTM A 53, Schedule 40 or Standard Weight, zinc‑coated steel pipe.
Extend sleeves in floor slabs 3 inches above the finished floor.

2\. Sleeves in Partitions and Other Than Masonry and Concrete Walls,
Floors, and Roofs: Shall be zinc‑coated steel sheet having a nominal
weight of not less than 0.90 pounds per square foot.

I. Escutcheon Plates: Provide one piece or split hinge type metal plates
for piping passing through floors, walls, and ceilings in exposed areas.
Provide chromium‑plated finish on plates in finished areas. Provide
paint finish on plates in unfinished areas. Securely anchor plates in
place with setscrews or other approved positive means.

J. Fire Department Inlet Connections: Provide inlet connections about 3
feet above grade, of the approved two‑way type with \[2.5‑inch National
Standard female hose threads\] \[threads to match local fire department
hose threads\] with plug and chain.

2.4 BURIED WATER PIPING SYSTEMS

A. Pipe and Fittings: Provide outside‑coated, cement mortar lined,
ductile‑iron pipe and fittings conforming to NFPA 24 for piping and
under the building and less than 5 feet outside of the building walls.
Anchor the joints in accordance with NFPA 24; provide concrete thrust
block at the elbow where the pipe turns up toward the floor, and
restrain the pipe riser with steel rods from the elbow to the flange
above the floor. Minimum pipe size shall be 6 inches. Minimum depth of
cover shall be \[3\] feet. Piping more than 5 feet outside of the
building walls shall be \[outside‑coated, AWWA C 104 cement mortar
lined, AWWA C 151 ductile‑iron pipe, and AWWA C 110 fittings conforming
to NFPA 24.\] \[provided under Section 02525 ‑ Water Supply Wells.\]

B. Valves: Provide as required by NFPA 24. Gate valves shall conform to
AWWA C 500 or UL 262 with cast‑iron body and bronze trim and shall open
by counterclockwise rotation.

C. Post Indicator Valves: Provide with operating nut located about 3
feet above grade. 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.

D. Valve Boxes: Shall be according to Section 02516 - Valves.

E. Buried Utility Warning and Identification Tape: Shall be according to
Section 02501 - Utility Line Marking.

[PART 3: EXECUTION]{.underline}

3.1 INSTALLATION

A. General: Equipment, materials, installation, and workmanship shall be
according to NFPA 13, except as modified herein. Install piping straight
and true to bear evenly on hangers. Keep the interior and ends of new
piping \[and existing piping affected by the Contractor\'s operations\]
thoroughly cleaned of water and foreign matter. Keep piping systems
clean during installation by means of plugs or other approved methods.
When work is not in progress, securely close open ends of piping and
fittings so that water and foreign matter will not enter the pipes or
fittings. Inspect piping before placing into position.

B. Connections to Existing Water Supply Systems: Use tapping or machine
valve and mechanical joint type sleeves for connections to be made under
pressure. Bolt sleeves around the mains; bolt valve conforming to AWWA C
500 to the branch. Open valve, attach drilling machine, make tap, close
valve, and remove drilling machine, all without interruption of service.
Notify the Contracting Officer in writing at least \[15\] days prior to
the date the connections are required; approval shall be received before
any service is interrupted. Furnish material required to make
connections into the existing water supply systems, and perform all
excavating, backfilling, and other incidental labor as required.
\[Furnish\] \[Government will furnish only\] the labor and the tapping
or drilling machine for making the actual connections to the existing
systems.

C. Field Painting: Clean, pretreat, prime, and paint new sprinkler
systems including valves, piping, conduit, hangers, miscellaneous
metalwork, and accessories. Apply coatings to clean dry surfaces using
clean brushes. Clean the surfaces to remove dust, dirt, rust, and loose
mill scale. Immediately after cleaning, provide the metal surfaces with
one coat of Mil. Spec. DOD P-15328 pretreatment primer applied to a
minimum dry film thickness of 0.3 mil, and one coat of Fed. Spec.
TT‑P‑645 primer applied to a minimum dry film thickness of one mil.
Exercise care to avoid the painting of sprinkler heads of protective
devices. Remove materials which are used to protect sprinkler heads,
while painting is in process, upon the completion of painting. Remove
sprinkler heads which are painted and provide new clean sprinkler heads
of the proper type. Provide primed surfaces with the following:

1\. Sprinkler Systems in Unfinished Areas: Unfinished areas are defined
as attic spaces, spaces above suspended ceilings, crawl spaces, pipe
chases, and spaces where walls or ceiling are not painted or not
constructed of a prefinished material. Provide prime surfaces with one
coat of Fed. Spec. TT‑E‑489 red enamel applied to a minimum dry film
thickness of one mil.

2\. Sprinkler Systems in All Other Areas: Provide primed surfaces with
two coats of paint to match adjacent surfaces, except provide valves and
operating accessories with one coat of Fed. Spec. TT‑E‑489 red enamel
applied to a minimum dry film thickness of one mil. Provide piping with
2‑inch wide red enamel or self‑adhering red plastic tape bands spaced at
maximum of 20‑foot intervals throughout the piping systems, except in
finished areas, such as offices, the red bands may be deleted.

3.2 FIELD QUALITY CONTROL

A. Disinfection: Water piping shall be flushed by the Contractor
according to AWWA C 651 prior to disinfecting. The Contractor shall
disinfect the new water piping \[and existing water piping affected by
the Contractor\'s operations\] according to Section 02518 - Testing of
Piping Systems.

B. Preliminary Testing: The Contractor shall hydrostatically test each
system at 200 psig for a period of 2 hours and flush the piping
according to NFPA 13. The Contractor shall furnish necessary equipment,
labor, and materials to conduct the testing. Testing shall be conducted
in the presence of the Contracting Officer who shall be given 48 hours
notice before any test is to be conducted. Piping above suspended
ceilings shall be tested by the Contractor, inspected, and approved by
the Contracting Officer before installation of ceiling. The Contractor
shall test the alarms and other devices. The Contractor shall test the
water flow alarms by flowing water through the inspector\'s test
connection. When tests have been completed and corrections made, the
Contractor shall submit a signed and dated certificate, similar to that
specified in NFPA 13, with a request for a formal inspection and tests
to the Contracting Officer.

C. Final Testing: The Contractor shall perform the final testing. The
Contractor shall furnish necessary, equipment, labor, materials and
instruments. \[The Government will furnish water for the tests.\]
Testing shall be conducted in the presence of the Contracting Officer.
Submit the request for the final inspection \[15\] working days prior to
the date the inspection is to take place. An experienced technician
regularly employed by the sprinkler installer shall be present during
the inspection. At this inspection, perform all of the required tests.
The Contractor shall correct defects in the work provided by the
Contractor, and make additional tests until it has been demonstrated to
the Contracting Officer that the systems comply with all contract
requirements.

3.3 TRAINING OF GOVERNMENT EMPLOYEES

A. Requirements: See Section 01780 - Closeout Submittals.

[PART 4: MEASUREMENT AND PAYMENT]{.underline}

4.1 METHOD OF MEASUREMENT

A. Units: The work described in this section will not be measured for
payment.

4.2 BASIS OF PAYMENT

A. Payment: No direct payment for the work described under this section
will be made. Consideration for this item shall be included in the bid
price for other items of the Contract.

END OF SECTION