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Section 21 00 00
Fire Suppression Sprinklers and Standpipes
Page 1 of 14
____________________________________________________________________________________
Specifier – Use this Section for all projects with fire sprinkler and standpipes work on the UW
Campus. The A/E is expected to modify portions of this Section as necessary to
accurately reflect conditions of the project. Consult with EH&S and identify all deleted
information. When an item is not used, keep the heading and indicate “Not Used.”
(Example: 2.10 Fire Department Connection – Not Used)
___________________________________________________________________________________
PART 1 – GENERAL
1.1
SUMMARY
A.
Provide all material, labor, equipment, design and services necessary for the installation of
the fire suppression sprinkler system described in the Contract Documents.
B.
Scope of Work:
____________________________________________________________________________________
Specifier – For item 1.1B.1, provide a scope of work description including, but not limited to:
revision to existing system and area to be covered or new system, wet or dry system,
hydraulic or pipe schedule design, density /area if calculated, and hazard classification
Example: Sprinkler system shall be based on Ordinary Hazard Group I (.15 GPM/1500
Sq. Ft.) or Ordinary Hazard Group II (.20 GPM/1500 Sq. ft.)
____________________________________________________________________________________
1.
Provide Scope of Work here.
2.
Area reduction for quick response heads as described in NFPA 13 is allowed. Area
reductions shall adhere to specific height restrictions.
3.
Branch and tree layouts are required standard layouts. Looped cross main designs are
acceptable, provided the cross main only uses a single loop and the looped main is 2
1/2” minimum. Grid systems are not acceptable.
____________________________________________________________________________________
Specifier - Modify item 1.1B.4: For projects which will utilize UW-owned water mains, the A/E
should provide the water supply design information, provided by the University of
Washington, in this specification or on the drawings. For projects connecting to water
mains not owned by the UW, clarify that the A/E is to obtain water supply design
information from the utility.
____________________________________________________________________________________
1.2
4.
Water supply is shown in the Contract Documents.
5.
New systems shall be hydraulically designed.
QUALITY ASSURANCE
A.
Qualifications:
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B.
Page 2 of 14
1.
All work shall be performed by a contractor with a valid Washington State contractor’s
license, and local Authority Having Jurisdiction (AHJ) certification for the design and
installation of fire suppression sprinkler systems.
2.
The system shall be designed by a NICET Level 3 certified sprinkler designer or a
registered fire protection engineer or mechanical engineer (who must review and stamp
all drawings and the hydraulic calculation cover sheets).
3.
The field installation shall be supervised, at all times, by a journeyman sprinkler fitter.
4.
Qualifications of welders shall meet or exceed American Welding Society (AWS) B2.1
and ASME Boiler and Pressure Vessel Code, Section IX.
5.
All grooved joint couplings, fittings, valves, and specialties shall be of a single
manufacturer. Grooving tools shall be of the same manufacturer as the grooved
components.
6.
All castings used for fittings, couplings, valve bodies, etc., shall include a cast date
stamp for quality assurance and traceability.
Codes and Standards: The design and installation shall conform to the latest edition, based
upon local jurisdiction adoptions and amendments at the time of bid, of each of the following:
1.
2.
3.
4.
5.
6.
7.
1.3
Section 21 00 00
Fire Suppression Sprinklers and Standpipes
NFPA 13, “Standard for the Installation of Sprinkler Systems,” including all appendices
NFPA 14, “Standard for the Installation of Standpipe and Hose Systems,” including all
appendices
NFPA 24, “Standard for the Installation of Private Fire Service Mains and their
Appurtenances,” including all appendices
International Building Code, including any AHJ administrative rules and amendments
International Fire Code, including any AHJ administrative rules and amendments
International Mechanical Code, including any AHJ administrative rules and
amendments
Underwriters Laboratories, “Fire Protection Equipment Directory”
SUBMITTALS
A.
Prepare and submit CAD Shop Drawings, product data, and welding procedures. Include:
1.
Hydraulic calculations, seismic brace calculations, and all items set forth in NFPA 13.
2.
Product data and samples including a complete list of equipment and products, and a
manufacturer’s catalog sheet for each item to be included in the work.
3.
Welding procedures that comply with the qualification requirements of NFPA 13, and
that meet or exceed AWS B2.1 “Standard Welding Procedure and Performance
Qualifications” and ASME Boiler and Pressure Vessel Code, Section IX.
4.
Grooved joint couplings and fittings shall be referred to on drawings and product
submittals and shall be identified by the manufacturer’s style or series designation.
Trade names and abbreviations are not acceptable.
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B.
Section 21 00 00
Fire Suppression Sprinklers and Standpipes
Page 3 of 14
5.
Sprinklers shall be referred to on drawings, submittals, and other documentation, by the
sprinkler identification or model number as specifically published in the appropriate
agency listing or approval. Trade names or other abbreviated designations shall not be
allowed.
6.
Incomplete submittals will be returned without action, unless prior approval is requested
and given by the University of Washington for partial submittals.
7.
After UW review and approval, Contractor shall submit to the local AHJ for approval.
a.
For Harborview and UW Housing and Food Services Projects, UW’s Shop
Drawing review includes review by UW’s insurance brokers; and for Harborview,
the State of Washington Department of Health. These reviews are submitted by
the UW.
b.
After approval by the local AHJ, the Contractor shall re-submit a copy of the UWapproved Shop Drawings with the local jurisdiction approval, and accompanying
letter to UW.
For Substantial Completion, submit as-built CAD Shop Drawings, and O&M information
required by Section 01 77 00 including final hydraulic calculations and manufacturers product
data catalog sheets and a completed Contractor’s Test and Materials Certificate.
1. Acceptance of the completed work will be granted jointly by the local AHJ and the UW.
Approval by the local AHJ shall be evidenced in writing and forwarded to the UW as a
requirement for Substantial Completion.
1.4
APPROVALS
A.
For the purposes of code compliance, the installation is to be compliant with the local AHJ.
Where there are conflicts between the AHJ and the referenced codes and standards, the
more stringent shall apply. If there is a question of interpretation as to which is more
stringent, the UW’s fire protection engineer, working through the UW’s Representative, will
decide.
PART 2 – PRODUCTS
2.1
GENERAL
A.
Materials and equipment: All materials and equipment in the system shall be new and
current products of a manufacturer regularly engaged in the production of such materials and
equipment. Where two or more pieces of equipment are required to perform interrelated
functions, they shall be products of one manufacturer.
B.
Approval guides: Unless otherwise indicated, all products shall be listed in the latest
publications of Approval Guides for Underwriters Laboratory for the service intended.
C.
Pressure rating: Pressure ratings of all fittings shall meet or exceed maximum working
pressures available within the system.
D.
Corrosion protection: All piping and hangers, where exposed to the weather or installed in
corrosive atmosphere, shall be protected against corrosion. Piping and hangers in such
areas shall be stainless steel and/or hot dipped galvanized. Piping having an external only
galvanized finish in such areas is not acceptable.
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2.2
2.3
Section 21 00 00
Fire Suppression Sprinklers and Standpipes
Page 4 of 14
PIPE
A.
Schedule of pipe: All pipes shall be ferrous and meet the requirements of NFPA 13. Pipe
shall be schedule 40 for threaded and cut groove pipe and schedule 10 for roll groove
applications. No substitutions.
B.
Galvanized pipe: Dry pipe systems, non-pressurized fire department pumper connection
piping, and pipe located in corrosive environments shall meet the requirements of NFPA 13,
be schedule 40 pipe, ferrous, and galvanized, no substitutions.
C.
Underground pipe: All piping upstream of the double backflow preventer shall be ductile iron
class 52 and cement-mortar lined whether inside or outside the building. Other pipe types
may be used only with the approval of the UW.
D.
Coat all exposed threads on galvanized pipe with a zinc rich coating. Coat all exposed
threads on steel pipe with rust inhibitive paint.
E.
For residential housing projects with Type V (five) A or B construction, Post-Chlorinated
Polyvinyl Chloride (CPVC) pipe is allowed. CPVC pipe shall comply with NFPA 13 and all
applicable state and local jurisdiction building code requirements. Such pipe shall be UL
listed and/or FM approved for fire protection use. When CPVC materials are used, the
Contractor shall be responsible for the compliance with all compatibility issues that involve
the use of CPVC. This includes the use of the compatible steel pipe, proper precautions for
cutting oils that are used to thread steel pipe, and any and all other outside contaminants that
could cause the CPVC pipe and/or fittings to fail over time. CPVC fittings shall be UL listed
and/or FM approved, and shall be joined in accordance with the listings of the pipe and
fittings. Cure times shall be in accordance with the manufacturers’ recommendations, but
shall not be less than 24 hours.
FITTINGS AND COUPLINGS
A.
Threaded fittings: Threaded fittings shall be ductile or cast iron class 125, rated for 175 psi
cold water working pressure and shall conform to ASME B16.4, and ANSI B2.1 NPT.
Malleable threaded fittings are not acceptable.
B. Nipples: No close nipples are allowed. For short pipe connections use standard short
nipples.
C. Adjustable nipples: Adjustable drop nipples must be of double O-ring seal design.
D. Thread-O-Lets: Shop-welded Thread-O-Lets may be used where a certified welder is used,
meeting the requirements of this Section.
E. Grooved fittings: 90’s, 45’s, tees, and reducers shall be ductile iron, short-pattern, with flow
equal to standard pattern fittings. Adapter flanges (fittings) shall be cast ductile iron/class
125 conforming to ANSI B-16.1, with a rust inhibiting coating. Fittings shall be Victaulic
FireLock series or approved equal
F. Grooved couplings: Grooved couplings and reducers shall be ductile iron conforming to
ASTM A-536, Grade 65-45-12. Coupling gasket shall be molded elastomer (EPDM) per
ASTM D2000, Victaulic grade “E” (type A) or approved equal. On dry pipe systems use a
“Flush Seal” or “Flush Gap” gasket. Grooved couplings and reducers shall be of the same
manufacturer as used for the grooved fittings.
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1.
2.
Section 21 00 00
Fire Suppression Sprinklers and Standpipes
Page 5 of 14
Rigid Type: Coupling housings with offsetting, angle-pattern bolt pads shall be used to
provide system rigidity and support and hanging in accordance with NFPA-13.
Couplings shall be fully installed at visual pad-to-pad offset contact. Tongue and
recess type couplings, which require the use of a torque wrench to achieve the exact
required gap between housings, are not permitted. Victaulic Style 009H and
107H/107N (Quick-Vic™) or approved equal. Installation ready rigid coupling for direct
stab installation without field disassembly.
Flexible Type: Use in locations where vibration attenuation and stress relief are
required. Victaulic Installation-Ready Style 177 or Style 77 or approved equal.
G. Plain end couplings: No plain end couplings (Roust-A-Bouts, Plainloks or similar couplings) are
allowed.
H. Hole-cut outlets: No hole-cut outlets are allowed for new sprinkler systems. Hole-cut bolted
outlets (mechanical tees) couplings may be used only in isolated locations of existing sprinkler
systems, when approved by UW. Coupons created by hole-cut outlets shall be secured to the
fittings via zip-tie or wire.
I.
Flexible drops: UL listed flexible drops up to 6 feet in length are permitted where installed in
accordance with NFPA 13 and manufacturer’s requirements.
1.
2.
3.
4.
2.4
PIPE THREAD SEALANT
A.
2.5
Flexible drops may only be used on hydraulically designed systems.
The drop shall include a UL approved Series AH2 braided hose with a bend radius to 2”
to allow for proper installation in confined spaces. Union joints shall be provided for
ease of installation.
The flexible drop shall attach to the ceiling grid using a UL Listed bracket. The bracket
shall allow installation before the ceiling tile is in place.
Victaulic VicFlex™ Multiple-Use Flexible Stainless Steel Sprinkler Drop System or
approved equal.
Provide Teflon tape or brush-on pipe thread sealant with Teflon. Provide Grinnel Tuff-Loc, or
approved equal.
HANGERS AND SUPPORTS
A.
Hangers: Provide hangers to support all piping in perfect alignment without sagging or
interference, to permit free expansion and contraction, and to meet the requirements of NFPA
13.
B.
Pipe rings: Pipe rings shall be Tolco Fig. 200, or approved equal. For end of branch line
restraint provide Tolco Fig. 25 restrainer, or approved equal.
C. Hanger rods: Hanger rods shall be zinc or electro-galvanized for dry systems.
D.
C-clamps: Equip all c-clamps (beam clamps) with earthquake retaining straps.
E.
Riser clamps: Riser clamps shall be UL listed Tolco Fig. 4.4A, or approved equal. They shall
not protrude more than 2 inches beyond the edge of the hole.
F.
Concrete anchors: Concrete expansion anchors shall be UL listed for hanging fire sprinkler
piping. Explosive type (powder driven) anchors are not acceptable.
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2.6
2.7
2.8
Section 21 00 00
Fire Suppression Sprinklers and Standpipes
Page 6 of 14
EARTHQUAKE BRACING
A.
Seismic bracing structural attachments: Seismic brace structural attachments shall be Tolco
Fig. 910, or approved equal. Seismic attachments must have break-off type bolts to ensure
proper torque.
B.
Seismic brace pipe attachments: Seismic brace pipe attachments shall be Tolco Fig. 1000,
Tolco Fig. 1001, Tolco Fig. 4A, or approved equal. Seismic attachments must have break-off
type bolts to ensure proper torque.
VALVES
A.
Outside screw and yoke (OSY) valves: OSY valves shall be cast iron, grooved or flanged
and rated for 175 psi, non-shock cold water working pressure. Victaulic Series 771 or
approved equal.
B.
Isolation/control valves: Sprinkler system, standpipe, and other approved ground controlling
valves shall be gear-operated slow-close butterfly valves with flag type indicator, ductile iron
grooved body, EPDM pressure responsive seat, electroless-nickel coated disc, stainless steel
stem with bronze bushings, and two internal single-pole, double-throw monitor switches.
Victaulic Series 705 or approved equal.
C.
Supervised valves 1 ½ inches and smaller: Sprinkler controlling valves 1 ½ inches and
smaller shall be slow-close supervised butterfly valve from Milwaukee Valve Company, model
BB-S02-R, or approved equal. Valves controlling fire sprinklers in elevator pits shall be
unsupervised.
D.
Valves controlling sprinklers in elevator machine rooms: Control the sprinklers located in
elevator machine rooms with a normally closed supervised butterfly control valve from
Milwaukee Valve Company, model BB-S02-R, or approved equal.
E.
Drain valves: Drain valves need only be UL Listed, screw-in bonnet bronze globe valves,
rated to 175 psi non-shock cold water working pressure by Nibco, United, or approved equal.
Low point drain valves shall have, in addition, a 3/4 inch brass nipple with 3/4 inch mail hose
threads and cap.
F.
Combination test and drain valve: Victaulic Style 720 TestMaster II or AGF Model 1000 Test
’N Drain assembly, or approved equal. Pressure gauge for system pressure located on test
and drain assembly is not acceptable for measuring system pressure.
G.
Check valves: Check valves shall be grooved, iron body, bronze seat, elastomer coated
ductile iron or stainless steel clapper with a replaceable rubber seal (a rubber seal integral
with the seat is not acceptable), and minimum 175 psi non-shock cold water working
pressure. Use Victaulic Series 717, Viking Model D, or approved equal.
H.
Backflow prevention assemblies: Provide a double check valve assembly. The assembly
shall be listed in the most recent Washington State Department of Health, Drinking Water
Program’s “Backflow Prevention Assemblies Approved Installation in Washington State.”
Backflow prevention assemblies shall be by Febco, Ames, Watts, or approved equal.
I.
Wafer valves are not acceptable.
SPRINKLERS
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A.
Page 7 of 14
For lay-in suspended and gypsum wall board ceilings, provide quick response, glass bulb,
ordinary temperature, standard coverage, recessed sprinklers by Reliable Model F1FR,
Globe GL5601 Series, Victaulic V2708, or Viking Microfast, or approved equal.
1.
2.9
Section 21 00 00
Fire Suppression Sprinklers and Standpipes
For all other building areas, sprinkler heads shall be quick response, glass bulb,
ordinary temperature, standard coverage, by Reliable Model F1-FR, Globe GL5601
Series, Victaulic (V2704, V2708, V2710), or approved equal. Provide upright, pendant,
or sidewall heads to meet building conditions
B.
For areas subject to high temperatures exceeding 110 degrees F, or as noted in NFPA 13,
provide quick response, standard coverage, intermediate temperature sprinklers or high
temperature sprinklers as required by AHJ.
C.
Provide special purpose, window sprinklers, dry sprinklers, concealed sprinklers, or extended
coverage sprinklers only where indicated in the Contract Documents and in accordance with
their listing.
D.
Sprinklers in unfinished areas shall be brass.
E.
For residential occupancies, provide UL Listed Residential Sprinklers manufactured by
Reliable or Viking.
SPRINKLER GUARD
A.
Provide UL Listed sprinkler guards for sprinkler heads subject to mechanical damage or for
any sprinkler lower than 7’ 0” above the floor.
B.
Guards and escutcheons shall be listed, supplied, and approved for use with the sprinkler by
the sprinkler manufacturer.
2.10 FIRE DEPARTMENT CONNECTION
___________________________________________________________________________________
Specifier- A fire department connection with a minimum of four 2-1/2 inch ports and a 6 inch
water way should be provided when sprinkler demand at base of riser is 1000 gpm or
greater, or when combined standpipe and sprinkler demand is 1000 gpm or greater
and the standpipes are 6 inches or greater.
For item 2.10A, the FDC / escutcheon may be chrome at A/E’s choice.
____________________________________________________________________________________
A.
Provide a fire department connection (FDC) with horizontal type connections, dual clapper, 21/2 inch inlets, with rocker lug caps, and chains. The FDC / escutcheon shall be polished
brass.
B.
Provide a bronze ball drip for the fire department connection (FDC) inside the building and
connect to the nearest floor drain.
C.
FDC signage: Provide signage indicating “AUTO SPRINKLER” or “AUTO SPRINKLER AND
STANDPIPE” as part of the FDC escutcheon.
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D.
Provide a separate sign indicating Building Name, area served, type of system (automatic
sprinkler, standpipe, combination standpipe/sprinkler, etc.) for permanent attachment.
Content, size and location to be approved by the UW Fire Protection Engineer. Lettering
shall be a minimum 1 inch high.
E.
Locate fire department connection per AHJ requirements, but in no case more than 100 feet
from nearest fire hydrant. Show location of fire hydrant on drawings.
F.
At the low point near each fire department connection, install a 90-degree elbow with drain
connection to allow for drainage to prevent freezing. Victaulic #10-DR or approved equal.
2.11 ROOF FIRE DEPARTMENT OUTLETS
A.
Provide a wall type indicator post and butterfly valve for the roof indicator post, with a twoway roof fire department connection with rocker lug caps and chains. Provide Potter-Roemer
5870 series, or approved equal.
2.12 STANDPIPE HOSE VALVES
A.
Provide 2 1/2 inch polished brass hose valves with a cap and chain. Turn the outlet at an
angle of 45 degrees from the wall. The cap is to have a 1/8 inch diameter hole drilled in the
face to relieve any water pressure. Provide Potter-Roemer model 4065 with model 4626 (cap
and chain), or approved equal.
2.13 SIGHT DRAIN
A.
Where required, provide a single piece sight drain by Grinnell, or approved equal.
2.14 PRESSURE GAUGE
A.
Provide a 3-1/2 inch diameter, bourbon type pressure gauge, 0-300 lbs, and 1/4 inch soft
metal seat globe valve with arrangements for draining pipe between gauge and valve, located
near each main or floor control valve assembly on the main line or near each test location.
2.15 DRUM DRIP
A.
Provide a drum drip per NFPA 13 at the low drain points on a dry system.
2.16 SPLASH BLOCK
A.
Provide a splash block at the point of discharge for drains outside of the building.
2.17 SLEEVES
A.
Provide 24 gauge galvanized sheet metal with lock seam joints or 1/2 inch overlap sleeves in
floors, partitions, ceilings, and in construction without waterproof membranes. Provide
schedule 40 galvanized steel pipe sleeves in exterior walls. Provide schedule 40 pipe
sleeves with clamp rings in slab-on-grade or exterior walls having below grade penetrations.
Provide sleeves through roofs with flashing collars.
2.18 LINK SEALS
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Section 21 00 00
Fire Suppression Sprinklers and Standpipes
Page 9 of 14
Provide link seals when underground pipe passes through an exterior wall or slab. Flexible
couplings or push-on joints located within 1 foot of each side of the wall must be included in
the link seal installation.
2.19 WALL ESCUTCHEON
A.
For exposed pipe installations, provide plastic split ring type escutcheons and paint to match
wall.
2.20 DRY SYSTEM PIPE VALVE
A.
Provide a dry pipe alarm valve, trim package, accelerator and air maintenance device, all by
the same manufacturer. Include System Sensor or Potter BVL valve, or approved equal, at
connection to the high/low air switch. Victaulic Series 768-NXT or approved equal.
2.21 AIR COMPRESSOR/AIR MAINTENANCE DEVICE
A.
Use plant air with air maintenance device when possible.
B.
Where plant air is not available, provide UL Listed air compressor or maintenance device,
sized to completely refill the system within 30 minutes. Provide GAST compressor, or
approved equal.
C.
Set the dry pipe system air pressure at the maximum recommended by the information sheet
for the dry pipe valve or at 20 psi greater than the standard calculated trip pressure.
1.
2.
The PS-40-2 switch setting shall be as follows:
a.
The high setting will be the set pressure value plus 10 psi.
b.
The low setting will be the set pressure value minus 10 psi.
For compressors, the start point shall be set at 5 psi below the set pressure value.
2.22 FIRE ALARM AND RELATED EQUIPMENT
A.
Equipment in this section shall be provided, installed, and adjusted by the sprinkler
contractor. Conduit, wiring, and terminations shall be by others.
1.
Water flow switch: Potter VSR, or approved equal.
2.
Value supervisor switch: Potter OSYSU-A2 for OSY valves and Potter PCVS-2 for PIV
valves, or approved equal.
a.
Butterfly isolation valves shall be equipped with two internal single-pole, doublethrow monitoring switches.
3.
Pressure type water flow switch for dry systems: Potter PS10-2A, or approved equal.
4.
High-low air pressure monitoring switch for dry systems: Potter PS40-2A, or approved
equal.
5.
Potter bleeder valve BVL, no substitutions.
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Fire Suppression Sprinklers and Standpipes
Page 10 of 14
6.
Supervised valves 1 ½ inches and smaller: Slow-close supervised butterfly valve from
Milwaukee Valve Company, model BB-SCS02, or approved equal.
7.
Valves controlling sprinklers in elevator machine rooms: Control the sprinklers with a
normally closed butterfly valve from Milwaukee Valve Company, model BB-SC02-R, or
approved equal.
8.
Pipe, fittings, valves, as necessary for the installation an electronic bell on the exterior
of buildings, is specified in Division 28.
2.23 SIGNS
A.
Provide all control, drain and test valves with signs identifying the type of valve, the area
(floor or portion of the building) affected by the valve. Signs shall be three layer etched
plastic with red letters on a white background. Letters shall be a minimum 1/4 inch high. The
signs are to be hung by chain from the valve. If the system is a hydraulically calculated
system, provide a sign in accordance with NFPA 13.
1.
Submit text for approval (ex., “CONTROL VALVE FOURTH FLOOR NORTH”)
2.24 SPARE PARTS AND TOOLS
A.
B.
The Contractor shall provide and install UL listed and/or FM approved spare sprinkler
cabinet(s) required to contain the minimum quantity of sprinklers required by NFPA 13, for
each type, finish, and temperature rating used in the Work.
1.
The spare sprinkler cabinet shall be painted “fire red” and be keyed to a Corbin cat. 30
lock.
2.
Label the cabinet with a riveted or screw-on plastic laminate nameplate indicating
“SPARE SPRINKLER CABINET” in 3/4 inch high white letters on a red background.
3.
The cabinet(s) shall be installed at a location directed by the UW.
The Contractor shall provide two (2) sets of sprinkler wrenches compatible with each type of
sprinkler provided in each spare sprinkler cabinet.
PART 3 – EXECUTION
3.1
3.2
SHUTDOWN OF EXISTING SYSTEMS
A.
When it is necessary to shut down existing fire sprinkler systems that leaves the building
unprotected, the Contractor shall provide a continuous approved fire watch in accordance
with Section 01 35 23 “Owners Safety Requirements.”
B.
Submit a Utility Shutdown Request form in accordance with Section 01 50 00 “Temporary
Facilities and Controls” when requesting approval for fire protection shutdown or functional
impairment.
GENERAL
A.
Standards and requirements: Perform all installation work in accordance with the reference
standards without exception, and as required by AHJ. Install all piping straight, true and
plumb.
Last Revised March, 2015
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Date of Specifications
3.3
3.4
Changes to the approved Shop Drawings: Before making substantive deviations from the
approved Shop Drawings, obtain written approval from the UW and the AHJ. Carefully note
any deviations on the Project Record.
C.
Grooved joint couplings and fittings shall be installed in accordance with the manufacturer’s
written installation instructions. Grooved ends shall be clean and free from indentations,
projections, and roll marks in the area from pipe end to groove. Gaskets shall be verified as
suitable for the intended service prior to installation. Gaskets shall be molded and produced
by the coupling manufacturer. The grooved coupling manufacturer’s factory trained
representative shall provide on-site training for contractor’s field personnel in the use of
grooving tools, application of groove, and installation of grooved joint products. The
manufacturer’s representative shall periodically visit the jobsite and review installation.
Contractor shall remove and replace any joints deemed improperly installed.
PENETRATIONS
A.
Required clearance around pipe: Provide piping that passes through fire rated assemblies,
including fire rated GWB assemblies, with clearance around the entire circumference of the
pipe as required by NFPA 13. Penetrations of walls, floors or ceilings shall be made in a neat
manner using properly sized hole-saw or masonry/concrete coring as necessary.
B.
Fire rated assemblies: The annular space between the wall or pipe sleeve and the sprinkler
pipe in fire rated assemblies shall be filled with UL classified fire-stopping material in
accordance with the manufacturer’s recommendation.
C.
Escutcheons: Where exposed piping or hangers pass through a finished floor, wall or ceiling,
install split wall plates or escutcheons fitting securely and snugly and covering the opening.
CONTROL VALVES
Install all control valves, supply valves, and test valves in easily accessible locations with the
valve handle, or wheel, no higher than seven (7) feet above the finished floor.
WATER FLOW SWITCHES
A.
3.6
Page 11 of 14
B.
A.
3.5
Section 21 00 00
Fire Suppression Sprinklers and Standpipes
Install all water flow switches in easily accessible locations, such that the cover plate is
unobstructed and facing forward.
INSPECTOR’S TEST AND DRAINS
A.
Provide inspector’s test valves for each floor of each system.
1.
For dry systems protecting exterior spaces such as canopies, the inspector’s test
assembly shall be piped to discharge outside the building and shall be located at the
hydraulically most remote part of the system.
2.
For buildings two (2) stories or less, pipe the inspector’s test assembly to discharge
outside the building, located at the hydraulically most remote part of the system.
3.
For buildings higher than two (2) stories, the inspector’s test assembly shall be piped
as noted in NFPA 13. Discharge into a drain riser located adjacent to the system. The
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valve shall be readily accessible, at a location no higher than seven (7) feet above the
finished floor.
B.
Main drains: Provide main drains at all system floor control valves. The plumbing drain shall
be capable of accepting the full flow of the sprinkler system main drain. The discharge shall
be to a 6 inch minimum floor drain with a funnel. Do not pipe any sprinkler systems directly
into a drain. There must be at least a 1/2 inch gap between the pipe and the funnel/drain.
1.
For single story buildings, drain risers and main drain shall discharge to a safe location
outside the building. Provide splash blocks to limit damage to landscaping.
a.
2.
C.
3.7
Auxiliary drains: Provide auxiliary drains at all low points of the system, where the trapped
section of pipe exceeds 5 gallons.
1.
Provide an auxiliary drain for each floor of the building within a building stairwell
hydraulically remote from the floor control assembly.
2.
The drain shall consist of, as a minimum, a valve, a 3/4 inch brass nipple with 3/4 inch
male hose threads, and cap.
a.
Locate auxiliary drains in unfinished areas, without suspended ceiling, whenever
possible.
b.
When located in finished areas, with lathe and plaster or GWB locate the hose
bib within six (6) inches of an access panel, minimum 12” x 12”. When located in
toilet rooms the panel shall be stainless steel.
Provide gauges at the main system riser and at each floor control valve.
LAY-IN SUSPENDED CEILINGS
A.
When not indicated otherwise, locate sprinkler heads between the one-quarter and threequarter points of the tiles in both directions and carefully align them.
1.
3.9
For multistory buildings, discharge shall be into drain risers.
GAUGES
A.
3.8
Where outside discharge cannot be achieved, discharge shall be a drain riser.
Provide 1 inch clearance with escutcheon around penetrations thru suspended ceilings
per ASCE requirements.
INSPECTION AND HYDROSTATIC TESTS
A.
Flushing of underground piping: Flushing shall be considered satisfactorily completed when
no debris emanates from the piping or the piping has been flushed for a time period
acceptable to the AHJ and the UW.
B.
Hydrostatic testing of underground piping: Refer to NFPA 24 for permissible leakage in
underground piping. The amount of leakage shall be measured by pumping from a calibrated
container. The Contractor shall repair any leaks or drips immediately. Do not use additives
and corrosive chemicals, sodium silicate or derivatives of sodium silicate, brine, or other
corrosive chemicals for testing systems or stopping leaks.
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C.
Hydrostatic testing of aboveground piping: Install aboveground piping in such a manner that
there will be no visible leakage or drop in gauge pressure when the system is subjected to
the hydrostatic pressure test. Test shall be in conformance with NFPA 13. The Contractor
shall repair any leaks or drips immediately. Do not use additives and corrosive chemicals,
sodium silicate or derivatives of sodium silicate, brine, or other corrosive chemicals for testing
systems or stopping leaks.
D.
Inspection of piping before installation of wall/ceiling material: Piping, hangers and sway
bracing shall be considered satisfactorily installed when the installation is in conformance
with the Contractor’s approved Shop Drawings and NFPA 13. The Owner and the local AHJ
shall approve any deviations from the approved Shop Drawings. When in the opinion of the
Owner or the local AHJ representative, the installation deviates greatly from the approved
Shop Drawings, revised Shop Drawings and hydraulic calculations may be required to verify
the installation.
E.
Partial system test or sprinkler coverage inspections: Perform tests with the sprinklers
installed in their final positions. Where it is critical to the continuance of the project as a
whole to cover portions of the piping with ceilings or walls prior to the completion of the entire
system, perform partial testing of the system after receiving written approval from the UW. In
this case “partial” indicates an entire zone of floor of one system. A satisfactory partial test
does not relieve Contractor from performing all final testing procedures.
F.
Final piping inspection: Final sprinkler placement shall be considered satisfactorily complete
when all sprinkler heads are installed in accordance with their listing or AHJ approval and the
Contractor’s approved Shop Drawings. The Contractor may be required to relocate or add
additional sprinklers if proper coverage is not provided due to unforeseen or modified
architectural conditions.
G.
Final functional test: The final functional test shall be considered satisfactorily complete
when all valves and switches perform in accordance with the Contractor’s approved Shop
Drawings and the following procedures:
1.
Operate all control valves to verify proper operation of the valve and associated tamper
switch.
2.
Operate all test connections to verify water-flow switch operation.
3.
Dry-pipe system air test: Pressurize all dry system piping to 40 psi of air pressure for
24 hours in order to verify leak-tight installation. The piping system shall allow a loss of
pressure over 1 ½ psi in 24 hours. All leaks resulting in a loss over 1 ½ psi shall be
repaired and the system retested.
4.
Dry-pipe valve operation: Operate the dry system inspector’s test connection. Record
the following information on the Contractor’s Material and Test Certificate during the
valve operation test: time for valve to operate, time to received water at inspector’s test
connection, static supply water pressure, system air pressure and air pressure at valve
release. The inspector’s test connection shall receive water within 60 seconds of its
operation.
5.
Pressure regulating valves: Flow-test pressure regulating valves (PRVs) to verify
proper performance. Use a flow-metering device to properly record water flow rate.
Record the following information for each valve and attach to the Contractor’s Material
and Test Certificate: inlet and outlet static pressures, inlet and outlet residual pressure
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and test water flow rate. Operate pressure regulating valves in accordance with the
Contractor’s approved Shop Drawings and the manufacturer’s pressure/flow curves.
H.
Inspection and test results should be forwarded to the Owner. Should the results of any
inspection or test not be satisfactory to the Owner or AHJ, a written list of corrective work
items will be provided to the Contractor. The Contractor shall make the required corrections
and request re-inspection as a requirement for Substantial Completion.
END OF SECTION
Last Revised March, 2015