SECTION 21 11 00
WET-PIPE FIRE SUPPRESSION SPRINKLERS
CONDITIONS OF THE CONTRACT AND DIVISION 1, as applicable, apply to this Section.
PART 1 - GENERAL
1.1
1.2
WORK INCLUDED
A.
Code compliance, research, design coordination, and installation or a complete and
dunctional hydraulically calculated wet pipe sprinkler system that meets the approval,
and is in accordance with the requirements of NFPA Fire Protection Standards listed in
1.4 (a), Underwriters Laboratory (UL), all local and sate regulations, and these
specifications.
B.
Alarm devices including alarm valves, flow switches/pressure switches, tamper
switches and coordination with Fire Alarm and Detection Contractor.
C.
Shop drawings and calculations prepared and submitted in accordance with the
requirement of all Authorities Having Jurisdiction.
D.
All permits and approvals of the fire protection system.
RELATED DOCUMENTS
A.
1.3
1.4
The Authority Having Jurisdiction requirements and NFPA 13.
REFERENCES
A.
The current editions of NFPA Standards No. 13, 14, 20,24,25.
B.
Underwriters’ Laboratories
C.
Applicable Codes and Regulations.
D.
Authorities Having Jurisdiction.
DESIGN CRITERIA
A.
Any design documents issued to the contractor are for information only. The
Contractor shall be responsible for all code research and obtaining all required flow test
data and hydraulically designing a fire protection system that meets all applicable
requirements. The Contractor shall arrange for, and conduct a flow test and coordinate
its validity with the Authorities Having Jurisdiction.
B.
Where pre-design of the sprinkler system is required for submission for the building
permit: The Fire Protection documents were prepared to be in compliance with all
applicable codes and flow test data provided. The Contractor shall review all
documents provided and report any modifications required to these documents to the
Design Engineer during the shop drawing preparation stage.
C.
All sprinkler heads in occupied areas are to be fast response type heads (155 degrees
– 165 degrees Fahrenheit).
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1.5
D.
All occupied, heated spaces will be protected by wet sprinkler systems.
E.
Inspector test valves will be protected by wet sprinkler systems.
F.
Design Densities:
1.
Public Spaces, Offices, and Classrooms: Wet pipe system with 0.10 gpm per
square foot over the most remote 1,500 square feet area.
2.
Mechanical rooms, Storage, and Service Areas: Wet pipe system with 0.15
gpm per square foot over 1,500 sq.ft.
G.
Coordination:
1.
The Fire Protection Contractor shall review the complete set of project
documents and coordinate his work with all other trades involved.
2.
Sprinkler head locations shall be coordinated with the architectural reflected
ceiling plans.
Locations of sidewall heads shall be coordinated with
architectural interior elevations.
3.
The fire protection piping and head layout shall function in such a manner so
as not to interfere with lighting fixtures, air distribution devices, equipment,
piping, and ductwork.
H.
Sprinkler Systems
1.
Any design documents issued to the Contractor are for information only. The
Contractor shall be responsible for the actual layouts, general routing of piping
and additional sprinkler heads to meet all requirements.
I.
All underground mains and appurtenances are to be installed according to NFPA 24.
PRECONSTRUCTION CONFERENCE
A.
1.6
1.7
The Contractor shall schedule a meeting including the sprinkler sub-contractor, Owner,
Architect and Engineer prior to the installation of any fire protection pipe hangers.
SUBMITTALS
A.
Submittals: The following documents shall be provided:
1.
Flow test Data
2.
Complete Hydraulic Calculations
3.
Complete Stamped and Coordinated Shop Drawings
4.
Pipe and Fittings
5.
Valves Sprinkler Heads
6.
Escutcheons
7.
All Applicable Devices, Alarms, and Specialties
B.
All submittal data shall be in BOUND SETS and be submitted at one time.
1.
Transmit sets of all fire protection submittal data to the local Authorities Having
Jurisdiction and the Architect or Engineer for review and approval.
C.
The Contractor shall not proceed with any work without final approved submittal data
bearing all approval stamps.
SPARE EQUIPMENT
A.
Provide a minimum of three spare sprinkler heads of each type and heat rating used.
Total number of spare heads shall be per NFPA 13 for the total sprinkler head count on
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the project. Cabinet(s) shall contain appropriate wrench(es) for use on each type of
head used.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
2.2
All sprinkler system equipment is to be UL Listed or FM Approved.
MATERIALS
A.
All piping shall be made in the USA and be labeled according to City and /or State
manufacturers Tn.
B.
Pipe and Fittings:
1.
Piping – Schedule 10 & 40 ASTM A-53, A-795, A-135, black steel piping for
branches (1 inch – 2 inches) and schedule 10 ASTM A-53, A-795, A-135 (2-1/2
inches – 8 inches) black steel for mains.
a.
Piping (piping only, excluding fittings) for dry systems shall be galvanized
steel ( see 1.5) meeting ASTM A-795.
2.
Fittings under 2-1/2 inches screwed cast iron, 175-pound S.W.P., 2-1/2 inches
and larger, flanged, or grooved pipe and fittings to accept a bolted type clamp
with gasket.
3.
Grooved Couplings & Fittings: ductile iron with gasket and two bolts, 300 psi
working pressure. Victaulic, Firelock fittings.
4.
Flanges – cast iron, 175 pound S.W.P., with threaded inlet, or Victaulic Mod.
#741.
5.
Hangers to meet NFPA 13 spacing and type.
C.
Control Valves: All control valves are to be electrically supervised.
1.
2-1/2 inches and under – 175 psi, Milwaukee “Butterball” with built-in tamper
switches.
2.
Over 2-1/2 inches – UL listed and FM approved, 175 psi, butterfly valves or
OS&Y with tamper switch.
D.
Alarm Check Valves: Shall be for vertical installation, cast iron, complete with retard
chamberport to alarm, pressure gauges, main drain, electric alarm pressure switch with
dual contacts suitable for either open or closed circuit.
1.
Control valve, check valve, and pressure or flow switch tied to fire alarm
system and sprinkler alarm bell.
E.
Switches:
1.
Water Flow Switches: Shall be paddle type water flow alarm (or pressure
switch of retard chamber) and with double contacts for either open or closed
circuit operation for connection to building fire alarm system.
2.
Tamper Switches: Shall be designed as an integral part of control valve
assembly or tamper switch shall have double acting, spring loaded plunger to
activate a single-pole double-throw switch for valve supervision of OS&Y type
control valves.
F.
Fire Department Connections (as indicated on plans):
1.
Siamese Wall Inlet Connection shall have cast brass or bronze body, wall
mounted type complete with two inlets, check valve, caps and chains. All
exposed surfaces shall be chrome plated labeled with the name(s) of the
system(s) served. Size per NFPA 13.
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2.3
G.
Sprinkler Heads:
1.
All sprinkler heads in occupied areas with finished ceilings shall be US
Listed/FM Approved quick-response recessed type heads (155 degrees
Fahrenheit). Central RFII Series, concealed.
2.
Exposed areas, 155 degrees Fahrenheit, standard brass upright heads.
Central TY-FRB Series, upright.
3.
Sprinkler heads shall be centered in ceiling tiles.
H.
Sprinkler Head Escutcheons.
1.
Finish for all escutcheons shall match the finish of sprinkler heads on which
they are used. Use white cover plates of recessed sprinkler heads.
I.
Water Motor Gong
1.
Provide a water motor gong. No Electric Bell.
FIRE PUMPS
A.
Electric motor driven vertical in-line fire pump with jockey pump and electric controllers.
B.
The fire pumps shall be designed to deliver the capacity necessary to comply with
NFPA 13 and NFPA 20 and to provide a complete, code compliant pumped fire
protection system.
C.
Manufacturers:
1.
Aurora
2.
Peerless
3.
Fairbanks-Morse
D.
Horizontal Base Mounted Pumps
1.
Type: UL 483 vertical shaft, single stage, double suction, direct connected,
horizontally split casing for 250 psig maximum working pressure.
2.
Casing: Cast iron, with suction and discharge gage ports, renewable bronze
casing wearing rings, seal flush connection, drain plug, flanged suction and
discharge.
3.
Impeller: Bronze double suction fully enclosed, balanced and keyed to shaft.
4.
Bearings: Grease lubricated ball bearings, replaceable without opening casing.
5.
Shaft: Alloy steel with replaceable bronze shaft sleeve.
6.
Seal: Packing gland with minimum four rings graphite impregnated packing and
bronze lantern rings, 230 degrees F maximum continuous operating
temperature.
7.
Drive: Flexible coupling with coupling guard.
8.
Baseplate: Cast iron with integral drain rim.
E.
Fire Pump Accessories
1.
Eccentric suction reducer and OS&Y gate or butterfly valve on suction side of
pump.
2.
Concentric increaser and check valve in pump discharge and OS&Y gate or
butterfly valve on system side of check valve.
3.
Fire pump/surge tank bypass tied with OS&Y gate or butterfly valves and RPZ
double check valve backflow preventer.
4.
Main relief valve, UL 1478, and enclosed type waste cone.
5.
Suction pressure gage, 4 112 inch diameter dial with snubber, valve cock and
lever handle.
6.
Discharge pressure gage mounted on board attached to pump, with snubber,
valve cock and lever handle.
7.
Casing 314 inch relief valve
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8.
9.
Float operated 314 inch automatic air release valve.
Hose valve manifold with 2 112 inch hose gate valves with caps and chains
F.
Electric Motor Drive
1.
Motor: Squirrel cage induction type; in open drip proof NEMA MG-1 enclosure,
1750 rpm. Refer to Section 23 03 48.
2.
Controller: Limited service type with Y-delta, closed transition starter, in
ANSI/NEMA 4 enclosure, including the following:
a.
Disconnect Switch: Externally operable, quick break type.
b.
Circuit Breaker: Trips in each phase calibrated at least to 300% of the
motor full-load current, 10,000 amperes interrupting capacity.
c.
Motor Starter: Energized automatically through pressure switch or
manually by externally operable handle.
d.
Pressure Switch: Set to cut in at pressure required to maintain 65 psig at
top of building riser.
e.
Running Period Timer: Keeps motor in operation when started
automatically, for a minimum of seven minutes.
f.
Pilot Lamp: Indicates circuit breaker closed and power available.
g.
Ammeter test link and voltmeter test studs.
h.
Alarm Relay: Energizes alarm to indicate circuit breaker open or power
failure.
i.
Remote start switch relay.
j.
Manual Selector Station: On enclosure marked 'Automatic" and 'NonAutomatic.'
k.
Provide a complete automatic transfer switch and reduced voltage motor
starter controller, NFPA 20 compliant.
G.
Pressure Booster (Jockey) Pump
1.
Electrically operated, horizontal close-coupled type with standard open dripproof horizontal motor.
2.
Each pump shall be multistage bronze fitted turbine type with bronze impeller,
stainless steel shaft, and grease-lubricated ball bearings, similar and approved
equal to Aurora Series 11 0.
3.
The fire system jockey pump shall be furnished with a factory-mounted bypass
relief valve complete with piping. Set relief pressure above the design total
dynamic head as required to prevent motor overload and damage to the
system.
4.
Control by automatic jockey pump controller with full voltage starter and
minimum run timer to start pump on pressure drop in system and stay in
operation for minimum period of time. Fire pump shall start automatically on
further pressure drop or on jockey pump failure.
5.
The jockey pump control panel enclosure shall be NEMA Type 1 wall-mounted,
factory assembled, wired, and tested and shall be finished with a baked
enamel coating. Panel shall include at least the following equipment:
a.
One non-fused disconnect switch mounted on panel door.
b.
One combination magnetic motor controller.
c.
One hand-off-automatic selector switch mounted on panel door.
d.
120 volt control power transformer and fused disconnect switch as
required to operate switches and controls in the panel.
H.
Installation
1.
Install in accordance with manufacturer's instructions and NFPA 20.
2.
Provide drains for bases and seals, piped to and discharging into floor drains.
3.
Mount unit on vibration isolators. Refer to Section 23 05 48.
4.
Provide for connection to electrical service.
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5.
6.
7.
2.4
STAND PIPES
A.
2.5
Check. align, and certify base mounted pumps by qualified millwright prior to
start-up; provide factory start-up service of fire pumps.
Perform hydrostatic flow test on entire system in accordance with NFPA 20.
Require test to be witnessed by Fire Marshal, Owner's insurance underwriter
and Architect/Engineer.
Provide a complete stand pipe system with 2 ½” fire hose connections in compliance
with Authority Having Jurisdiction Fire Marshal’s requirements for the entire building
with separate stand-pipes at auditorium stage and entrance to the auditorium.
1.
Building system shall provide a 2 ½” fire hose connection at each landing of
each egress stairwell and additional connections throughout the facility in order
to provide complete fire hose coverage based on a 150 foot of hose with 50
foot of water spray. Locate fire hose connections in Fire Marshal and Architect
approved locations such as stairwells and mechanical rooms and provide
required signage. Contractor shall include stand pipe water flow requirements
in hydraulic calculation for sizing of all fire water main piping and fire pump.
Contractor shall include in submittal a plan showing location of all fire hose
connections for approval by Authority Having Jurisdiction Fire Marshal prior to
fabrication and rough-in. System shall also comply with NFPA 13 for hose
connections for fire department use.
2.
Provide a complete stand pipe system on each side of the auditorium stage.
3.
Provide a complete stand pipe system on each side of the entrance to the
auditorium.
QUALITY ASSURANCE
A.
Shop drawings and hydraulic calculations are to be sealed by a NICET III or IV
sprinkler designer licensed in the state of Texas.
PART 3 - EXECUTION
3.1
EXAMINATION
A.
3.2
Examine areas for conditions under which work is to be performed. Report in writing to
the Architect all conditions that will adversely affect satisfactory execution of work. Do
not proceed with work until unsatisfactory conditions have been corrected.
INSTALLATION
A.
Provide tracer wire on all pipe installed below slab outside building; locate leads in
accessible location for future use in trouble shooting.
B.
Horizontal branch piping shall be pitched to mains per NFPA. Locate all sprinkler
mains a minimum of 24” above any finished ceiling.
C.
Provide placards on all control valves, alarm lines, alarm test lines, floor control valves,
area control valves, inspector test valves and auxiliary drain locations. Valves, etc.
above ceiling or in walls to be provided direct access and the location conspicuously
noted by a permanent placard indicating the type of device and the zone it covers.
Provide a zone map, mounted in an extruded metal frame with protective plexi-glass
cover mounted at the sprinkler zone valve header. Map shall indicate which zone valve
controls which portion of the building as well as the location of all system drain and test
valves. Label each valve with lamacoid, printed signs (“Inspector’s test”, “Main Drain”,
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etc.). Map shall reflect the actual room numbers indicated in the final approved
graphics package.
3.3
3.4
D.
Hydraulic information placards with permanent markings indicating the hydraulic design
criteria for each separate system should be installed on each riser.
E.
Provide basket type metal guards over sprinkler heads to protect them from damage in
mechanical rooms, main electrical and telephone equipment, storage rooms and all
unfinished areas where the head is less than 7 feet-6 inches above finished floor.
F.
All threads for fire department connections shall match the local Fire Department
connecting threads and requirements.
G.
Building shall be 100 percent fully sprinklered.
H.
Sprinkle Zones (1-2), comply with NFPA 13, 5-2 for areas limitations, provide a
minimum of TWO sprinkler systems with separate alarm check valve assemblies.
I.
Fire Alarm System: Coordinate with Division 16 to provide connections to all
supervised devices and flow switches as well as any other items requiring connection
to the fire alarm system, provide all wiring and equipment.
J.
Stages: At each side of each stage provide a complete Authorities having Jurisdiction
and NFPA compliant class III standpipe system with 1.5” and 2.5” fire department hose
connections. Mount hose connections in Potter-Romer lockable, clear glass front
cabinet. Coordinate exact location of standpipes with stage equipment.
K.
Maintain a minimum 3’ horizontal separation between any recessed, pendant sprinkler
head and any wall, partition, furr-down, or other vertical surface.
L.
Provide protection in all gymnasium areas.
M.
If a deluge system in required, the system shall be installed so that the deluge system
will not engage during a fire drill and/or in fire test mode.
CLEANING
A.
The entire underground and above ground sprinkler system shall be cleaned and
flushed in accordance with NFPA 13, 24, 25.
B.
Capped connections shall be located at the ends of sprinkler main piping to facilitate
flushing and cleaning of systems.
C.
Remove all trash and debris from site and dispose of legally.
DEMONSTRATION
A.
To obtain complete and final acceptance of the fire protection system, all inspections,
approvals, examination and acceptance tests required by the Authority Having
Jurisdiction shall be arranged and paid for under this Section.
B.
Sprinkler Contractor shall provide necessary equipment and test materials for testing of
the installation.
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3.5
C.
Testing of the completed sprinkler system for acceptance shall be witnessed by an
Owner’s representative. Testing should be coordinated with the Authority Having
Jurisdiction.
D.
Provide the Owner with as-built drawings and equipment data at completion of
construction.
E.
Provide completed Underground and Aboveground Contractor’s material and Test
Certificates per NFPA 13 at time of acceptance of test.
F.
Inspections test to be piped into nearest drain to support flow.
PAINTING
A.
Where exposed in any MEP equipment room, all fire protection piping shall be painted
red.
B.
Paint prior to the installation of sprinkler heads; replace any sprinkler heads that come
in contact with paint with new heads.
END OF SECTION
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