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M I L I T A R Y D E P A R T M E N T
S T A T E o f N E B R A S K A
TECHNICAL SPECIFICATIONS
(Volume II of III – Mechanical / Plumbing / Electrical) and
CONTRACT DOCUMENTS
for the
NEBRASKA ARMY NATIONAL GUARD
BELLEVUE READINESS CENTER
located in
Bellevue, Nebraska for the
MILITARY DEPARTMENT
STATE OF NEBRASKA
Lincoln, Nebraska
Project Number: 310102
February 25, 2021
SPECIFICATIONS FOR
Nebraska Army National Guard
New Readiness Center
Bellevue, Nebraska
February 25, 2021
Volume II of III
Mechanical / Plumbing / Electrical
INDEX OF SPECIFICATIONS
Division ....... Section Title ................................................................................. ............................................ Pages
SPECIFICATIONS GROUP
General Requirements Subgroup
DIVISION 00 – PROCUREMENT AND CONTRACTING REQUIREMENTS
Refer to Specification Booklet Volume I – Architectural / Structural / Interior.
DIVISION 01 - GENERAL REQUIREMENTS
Facility Construction Subgroup
DIVISION 02 – EXISTING CONDITIONS
DIVISION 03 - CONCRETE
DIVISION 04 - MASONRY
DIVISION 05 - METALS
DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES
DIVISION 07 - THERMAL AND MOISTURE PROTECTION
DIVISION 08 - OPENINGS
DIVISION 09 - FINISHES
DIVISION 10 - SPECIALTIES
NEW READINESS CENTER
BELLEVUE, NEBRASKA
TABLE OF CONTENTS
TC-2
DIVISION 11 - EQUIPMENT
DIVISION 12 - FURNISHINGS
DIVISION 14 – CONVEYING EQUIPMENT
Facility Services Subgroup
DIVISION 21 - FIRE SUPPRESSION (by Burns & McDonnell)
21 13 13 ......... Automatic Sprinkler System
DIVISION 22 – PLUMBING (by Burns & McDonnell except as noted)
22 05 13 ....... Common Motor Requirements for Plumbing Equipment
22 05 16 ....... Expansion Fittings and Loops for Plumbing Piping
22 05 17 ....... Sleeves and Sleeve Seals for Plumbing Piping
22 05 18 ....... Escutcheons for Plumbing Piping
22 05 19 ....... Meters and Gages for Plumbing Piping
22 05 23 ....... General-duty Valves for Plumbing Piping
22 05 29 ....... Hangers and Supports for Plumbing Piping and Equipment
22 05 53 ....... Identification for Plumbing Piping and Equipment
22 07 19 ....... Plumbing Piping Insulation
22 08 00 ....... Commissioning of Plumbing (by Specialized Engineering Solutions)
22 11 16 ....... Domestic Water Piping
22 11 19 ....... Domestic Water Piping Specialties
22 11 23 ....... Domestic Water Pumps
22 13 16 ....... Sanitary Waste and Vent Piping
22 13 19 ....... Sanitary Waste Piping Specialties
22 14 13 ....... Facility Storm Drainage Piping
22 14 23 ....... Storm Drainage Piping Specialties
22 14 29 ....... Sump Pumps
22 15 13 ....... General-service Compressed-air Piping
22 15 19 ....... General-service Packaged Air Compressors and Receivers
22 34 00 ....... Fuel-fired, Domestic-water Heaters
22 42 13.13 .. Commercial Water Closets
22 42 13.16 .. Commercial Urinals
22 42 16.13 .. Commercial Lavatories
22 42 16.16 .. Commercial Sinks
22 42 23 ....... Commercial Showers, Receptors, and Basins
22 45 00 ....... Emergency Plumbing Fixtures
22 47 13 ....... Drinking Fountains
TC-3
DIVISION 23 - HEATING VENTILATING AND AIR CONDITIONING (by Burns & McDonnell except as noted)
23 05 13 ....... Common Motor Requirements for HVAC Equipment
23 05 16 ....... Expansion Fittings and Loops for HVAC Piping
23 05 17 ....... Sleeves and Sleeve Seals for HVAC Piping
23 05 18 ....... Escutcheons for HVAC Piping
23 05 23 ....... General-duty Valves for HVAC Piping
23 05 29 ....... Hangers and Supports for HVAC Piping and Equipment
23 05 53 ....... Identification for HVAC Piping and Equipment
23 05 93 ....... Testing, Adjusting, and Balancing
23 07 13 ....... Duct Insulation
23 07 16 ....... HVAC Equipment Insulation
23 07 19 ....... HVAC Piping Insulation
23 08 00 ....... Commissioning of HVAC (by Specialized Engineering Solutions)
23 09 00 ....... Instrumentation and Control for HVAC
23 09 23 ....... Direct Digital Control (DDC) System for HVAC
23 11 23 ....... Facility Natural-gas Piping
23 21 13 ....... Hydronic Piping
23 21 23 ....... Hydronic Pumps
23 23 00 ....... Refrigerant Piping
23 31 13 ....... Metal Ducts
23 31 19 ....... HVAC Casings
23 33 00 ....... Air Duct Accessories
23 34 23 ....... HVAC Power Ventilators
23 36 00 ....... Air Terminal Units
23 37 13 ....... Diffusers, Registers, and Grilles
23 37 23 ....... HVAC Gravity Ventilators
23 52 16 ....... Condensing Boilers
23 64 23 ....... Scroll Water Chillers
23 72 00 ....... Air-to-air Energy Recovery Equipment
23 73 13 ....... Modular Indoor Central-station Air-handling Units
23 73 39 ....... Indoor, Direct Gas-fired Heating and Ventilating Units
23 81 26 ....... Split-system Air-conditioners
23 82 19 ....... Fan Coil Units
23 82 39 ....... Unit Heaters
DIVISION 26 – ELECTRICAL (by Burns & McDonnell except as noted)
26 05 00 ....... Common Work Results for Electrical
26 05 19 ....... Low-voltage Electrical Power Conductors and Cables
26 05 26 ....... Grounding and Bonding for Electrical Systems
26 05 29 ....... Hangers and Supports for Electrical Systems
26 05 33 ....... Raceways and Boxes for Electrical Systems
26 05 43 ....... Underground Ducts and Raceways for Electrical Systems
26 05 44 ....... Sleeves and Sleeve Seals for Electrical Raceways and Cabling
26 05 53 ....... Identification for Electrical Systems
TC-4
DIVISION 26 – ELECTRICAL (Cont.) (by Burns & McDonnell except as noted)
26 05 73.13 .. Short-circuit Studies
26 05 73.16 .. Coordination Studies
26 05 73.19- . Arc-flash Hazard Analysis
26 08 00 ....... Commissiong of Electrical Systems (by Specialized Engineering Solutions)
26 09 13 ....... Electrical Power Monitoring and Control
26 09 23 ....... Lighting Control Devices
26 22 13 ....... Low-voltage Distribution Transformers
26 23 00 ....... Low-voltage Switchgear
26 24 16 ....... Panelboards
26 27 26 ....... Wiring Devices
26 28 13 ....... Fuses
26 28 16 ....... Enclosed Switches and Circuit Breakers
26 29 23 ....... Variable-frequency Motor Controllers
26 32 13.14 .. Diesel Engine Generators
26 36 00 ....... Transfer Switches
26 41 13 ....... Lightning Protection for Structures
26 43 13 ....... Surge Protection for Low-voltage Electrical Power Circuits
26 51 19 ....... LED Interior Lighting
26 52 13 ....... Emergency and Exit Lighting
26 56 19 ....... LED Exterior Lighting
DIVISION 27 – COMMUNICATIONS (by Burns & McDonnell)
Refer to Specification Booklet Volume III – Communications / Civil.
DIVISION 28 - ELECTRONIC SAFETY AND SECURITY (by Burns & McDonnell)
Site and Infrastructure Subgroup
DIVISION 31 – EARTHWORK
DIVISION 32 - EXTERIOR IMPROVEMENTS
DIVISION 33 – UTILITIES (by Burns & McDonnell)
END OF INDEX OF VOLUME II - SPECIFICATIONS
AUTOMATIC SPRINKLER SYSTEMS
211313-1
NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
SECTION 211313 - AUTOMATIC SPRINKLER SYSTEMS
PART 1 - GENERAL
1.01 RELATED DOCUMENTS:
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and DIVISION 01 Specification Sections, apply to this Section.
1.02 SUMMARY:
A. Furnish all labor, materials, and equipment for fully operating fire protection systems in full compliance with the applicable NFPA standards and all other codes, regulations and laws applicable to the work, and in full compliance with the intent of the plans and specifications, including all work inferable from same.
B. Section Includes:
1. Connect to the underground fire protection water service piping at a location five feet outside the building as provided under DIVISION 33.
2. Wet pipe sprinkler systems throughout heated areas of the building.
3. Pipes, fittings, couplings, and specialties.
4. Fire protection valves.
5. Fire department connections.
6. Sprinklers.
7. Monitoring and Alarm devices.
8. Pressure gauges.
9. Inspector’s test valves and piping.
10. Drain valves and piping.
11. System testing.
C. Pay for all necessary construction permits related to the fire sprinkler system.
D. Related Sections:
1. SECTION 07 84 13 - PENETRATION FIRESTOPPING – for penetration firestopping.
2. SECTION 07 92 00 JOINT SEALANTS.
3. SECTION 09 91 23 - INTERIOR PAINTING for painting of pipe and equipment.
4. SECTION 28 31 00 - FIRE ALARM AND MASS NOTIFICATION SYSTEMS for monitoring of sprinkler systems.
1.03 REFERENCES:
A. Applicable Codes and Standards (latest edition or as adopted by local jurisdiction):
1. 2015 IBC (International Building Code) with UFC 1-200-01 amendments.
2. Local Codes including local policies, interpretation, and standards.
3. American Society of Civil Engineers/Structural Engineering Institute (ASCE/SEI).
a. ASCE/SEI 7 - Minimum Design Loads for Buildings and Other Structures.
4. American Water Works Association (AWWA).
a. AWWA C105 - Polyethylene Encasement for Ductile-Iron Pipe Systems.
b. AWWA C110 - Ductile-Iron and Gray-Iron Fittings for Water.
c. AWWA C111 - Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings.
d. AWWA C606 - Grooved and Shouldered Joints.
e. AWWA C151 - Ductile-Iron Pipe, Centrifugally Cast, for Water.
f. AWWA C153 - Ductile-Iron Compact Fittings for Water Service.
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NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
5. American Welding Society (AWS).
a. AWS B2.1 - Specification for Welding Procedure and Performance Qualification.
b. AWS D10.12 - Guide for Welding Mild Steel Pipe.
6. ASME International (ASME):
a. ASME Boiler and Pressure Vessel Code, Section IX, "Welding and Brazing
Qualifications".
b. ASME A13.1 - Scheme for the Identification of Piping Systems.
c. ASME B1.20.1 - Pipe Threads, General Purpose (Inch).
d. ASME B16.1 - Cast Iron Pipe Flanges and Flanged Fittings.
e. ASME B16.3 - Malleable Iron Threaded Fittings.
f. ASME B16.4 - Gray Iron Threaded Fittings.
g. ASME B16.5 - Pipe Flanges and Flanged Fittings NPS 1/2 through NPS 24 Inch
Standard.
h. ASME B16.9 - Factory-Made Wrought Buttwelding Fittings.
i. ASME B16.21 - Nonmetallic Flat Gaskets for Pipe Flanges.
j. ASME B16.39 - Malleable Iron Threaded Pipe Unions: Classes 150, 250, and 300.
k. ASME B16.42 – Ductile Iron Pipe Flanges and Flanged Fittings.
l. ASME B18.2.1 - Square and Hex Bolts and Screws, Inch Series.
m. ASME B31.9 - Building Services Piping.
7. ASTM International (ASTM).
a. ASTM A47 - Specification for Ferritic Malleable Iron Castings.
b. ASTM A53 - Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.
c. ASTM A135 - Specification for Electric-Resistance-Welded Steel Pipe.
d. ASTM A234 - Specification for Piping Fittings of Wrought Carbon Steel and Alloy
Steel for Moderate and High Temperature Service.
e. ASTM A312 - Specification for Seamless, Welded, and Heavily Cold Worked
Austenitic Stainless Steel Pipes.
f. ASTM A403 - Specification for Wrought Austenitic Stainless Steel Piping Fittings.
g. ASTM A536 - Specification for Ductile Iron Castings.
h. ASTM A674 - Standard Practice for Polyethylene Encasement for Ductile Iron Pipe for Water or Other Liquids.
i. ASTM A795 - Specification for Black and Hot-Dipped Zinc-Coated (Galvanized)
Welded and Seamless Steel Pipe for Fire Protection Use.
j. ASTM A865 - Specification for Threaded Couplings, Steel, Black or Zinc-Coated
(Galvanized) Welded or Seamless, for Use in Steel Pipe Joints.
k. ASTM E2016 – Standard Specification for Industrial Woven Wire Cloth.
8. Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR):
a. List of Approved Backflow Prevention Assemblies (updated online).
9. FM Global (FM):
a. FM Approvals - Approval Guide.
b. Property Loss Prevention Data Sheets (FM DS).
10. MSS (Manufacturer’s Standardization Society) of the Valve and Fitting Industry, Inc.
a. MSS SP-58 (2018) – Pipe Hangers and Supports – Materials, Design, Manufacture, Selection, Application, and Installation.
b. MSS SP-80 (2019) - Bronze Gate, Globe, Angle, and Check Valves.
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NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
11. NFPA (National Fire Protection Association) - Latest edition or as adopted by local jurisdiction:
a. NFPA 13 – Standard for the Installation of Sprinkler Systems (2019).
b. NFPA 24 – Standard for the Installation of Private Fire Service Mains and Their
Appurtenances (2019).
c. NFPA 25 – Standard for the Inspection, Testing, and Maintenance of Water-Based
Fire Protection Systems (2020).
d. NFPA 70 - National Electrical Code (2020).
e. NFPA 72 – National Fire Alarm and Signaling Code (2019).
f. NFPA 101 – Life Safety Code (2018)
g. NFPA 291 - Recommended Practice for Fire Flow Testing and Marking of
Hydrants (2019).
h. NFPA 1963 – Standard for Fire Hose Connections (2014).
12. Underwriters Laboratories Inc. (UL):
a. Fire Protection Equipment Directory.
13. Department of Defense (DoD) - Unified Facilities Criteria (UFC)
a. UFC 1-200-01 - General Building Requirements (20 June 2016, with Change 2 Nov
2018 Edition)
b. UFC 3-600-01 – Fire Protection Engineering for Facilities (8 August 2016 with
Change 5, 12 August 2020).
1.04 DEFINITIONS:
A. References to the Fire Protection Engineer in this SECTION means one of the following:
1. A registered professional engineer (P.E.), experienced in the design of automatic sprinkler systems and registered in the state of Nebraska, who has passed the fire protection engineering written examination administered by the National Council of
Examiners for Engineering and Surveys (NCEES) and has relevant fire protection experience.
2. A registered P.E. in a related engineering discipline, experienced in the design of automatic sprinkler systems and registered in the state of Nebraska, with a minimum of 5 years of experience, dedicated to fire protection engineering that can be verified with documentation.
B. References to the Fire Protection Technician in this SECTION means:
1. A qualified fire protection technician certified at Level IV with the National Institute for
Certification in Engineering Technologies (NICET) in Water Based Systems Layout.
1.05 PERFORMANCE REQUIREMENTS:
A. Sprinkler system design shall be approved by Engineer and Contracting Officer.
1. See plans for sprinkler system design criteria.
1.06 ACTION SUBMITTALS:
A. Refer to DIVISION 01 for administrative and procedural requirements for submittals.
B. Submit Shop Drawings: Include working plans, product data sheets and hydraulic calculations.
Prepare working plans, product data sheets, and hydraulic calculations for the complete sprinkler system in accordance with NFPA 13.
1. Employ the services of a Fire Protection Technician and Fire Protection Engineer. The
Fire Protection Technician shall prepare the sprinkler system shop drawings and
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NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
hydraulic calculations for submittal. The Fire Protection Engineer shall directly oversee the design and sign and seal the shop drawings and calculations for submittal.
2. Employ the services of a Fire Protection Engineer to prepare, sign and seal the sprinkler system shop drawings and hydraulic calculations for submittal.
3. The shop drawings, including resubmittals, shall be submitted as a complete submittal package including, but not limited to, shop drawings/working plans, annotated cut sheets, and hydraulic calculations. Partial submittals and submittals not fully complying with the requirements and recommended practices of NFPA 13 and this SECTION will be returned disapproved without review.
4. Shop drawing plans shall be drawn at a minimum scale of 1/8” = 1’-0”.
5. Where the drawings or Part 3 of this specification indicate maximum loads on structural members, shop drawings shall include calculations to indicate maximum hanger loads.
Detailed requirement shall be provided on the drawings to indicate maximum hanger spacing where maximum loads require hanger spacing less than maximums allowed by
NFPA 13.
6. Product data sheets shall be included for all materials used. Product data sheets shall be annotated to indicate the exact model, size, finishes, and other options that will be provided. Data sheets with multiple models, options and sizes that are not annotated will not be accepted. Outdated or poorly reproduced cut sheets will not be accepted.
7. Include hydrant flow test information with shop drawing submittal.
8. Provide fire stopping details, with UL system numbers, for penetration through fire and smoke walls, barriers, and partitions.
9. Coordinate with other contractors to provide data sheets and details for items that may not be included in the Fire Protection Contractor’s contract but are necessary for review of the shop drawings. This includes water service piping into the building, backflow preventers located outside the building, new underground piping, etc.
10. Shop drawings shall be wholly generated and coordinated by the Fire Protection
Contractor. Partial or complete reproductions of the Engineer’s drawings will not be accepted.
11. Shop drawing resubmittals shall be accompanied by a response letter addressing each comment in the Engineer’s review of the shop drawings. Changes to the working plans shall be clouded to indicate the revised area and annotated to indicate the revision number and revision date.
12. Submit shop drawings and hydraulic calculations to the AHJ.
13. Submit shop drawings and hydraulic calculations as specified in DIVISION 01
SUBMITTALS to the Engineer for review.
C. Obtain all approvals prior to purchasing equipment or beginning installation.
D. The Fire Protection Contractor assumes sole responsibility for purchasing equipment or beginning installation before all approvals are obtained. No change orders will be awarded due to purchasing equipment or beginning installation prior to obtaining approvals.
1.07 INFORMATION SUBMITTALS:
A. Contractor qualifications: The Fire Protection Contractor shall be a qualified fire protection contractor, licensed and regularly engaged in the installation of automatic fire sprinkler systems of similar size and complexity.
1. Submit Fire Protection Contractor qualifications and license information.
2. Submit proof of successful completion of three projects of similar size and scope.
211313-5
NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
B. Designer qualifications:
1. Submit qualifications of Fire Protection Technician.
2. Submit qualifications of Fire Protection Engineer.
C. Submit test certificates for flushing of underground prior to making connection to building sprinkler systems.
1.08 CLOSEOUT SUBMITTALS:
A. Submit Operation and Maintenance Data: Submit operations and maintenance manuals in accordance with DIVISION 01 “Contract Closeout”. In addition to items specified in
DIVISION 01, provide as-built drawings, material cut sheets, hydraulic calculations and one copy of NFPA 25.
1. Include operation and maintenance data for valves and specialties in the operations and maintenance manuals.
B. Submit completed Contractor’s Material and Test Certificate for Underground Piping in accordance with NFPA 24.
C. Submit completed Contractor’s Material and Test Certificate for Aboveground Piping in accordance with NFPA 13.
D. Submit sprinkler zone diagram in accordance with Part 3 of this specification.
E. Submit documentation of training.
F. Submit complete warranty information.
1.09 QUALITY ASSURANCE:
A. Sprinkler systems shall be designed and installed in accordance with the applicable NFPA standards, locally adopted building code, fire code Department of Defense, and other local policies, interpretations and standards as listed in Part 1 References.
1. If there is a conflict between the reference codes or standards and this SECTION, it is the
Fire Protection Contractor’s responsibility to notify the Engineer in writing. The most stringent requirement, as determined by the Engineer shall apply.
B. Compliance with referenced NFPA standards is mandatory. This includes advisory provisions listed in the annexes of such standards, as though the word "shall" had been substituted for the word "should" wherever it appears.
C. The Fire Protection Contractor’s responsibilities include designing, fabricating, and installing the sprinkler systems and providing professional design and engineering services needed to assume engineering responsibility.
D. Welding Qualifications: Qualify procedures and operators according to ASME Boiler and
Pressure Vessel Code.
E. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.
1.10 WARRANTY
A. Warrant all equipment and materials for a minimum of one-year from the date of substantial completion. The date of substantial completion will be signified by all test papers signed off by all necessary parties.
PART 2 - PRODUCTS
2.01 GENERAL:
A. Unless otherwise noted, all materials shall be:
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NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
1. Listed by Underwriter's Laboratories and included in the latest edition of the U.L. Fire
Protection Equipment directory or Approved by FM Global and listed in the FM Global
Approval Guide.
B. All sprinkler system components shall be rated for 175 psig minimum working pressure.
2.02 UNDERGROUND PIPE AND FITTINGS:
A. Underground piping and fittings shall comply with the requirements of Division 22 and 33.
B. Ductile Iron Pipe and Fittings:
1. Grooved-Joint, Ductile-Iron Pipe: AWWA C151, with cut, rounded-grooved ends.
2. Mechanical-Joint, Ductile-Iron Pipe: AWWA C151, with mechanical-joint bell and plain spigot end.
3. Push-on-Joint, Ductile-Iron Pipe: AWWA C151, with push-on-joint bell and plain spigot end.
4. Grooved-End, Ductile-Iron Pipe Appurtenances:
a. Grooved-End, Ductile-Iron Fittings: ASTM A47/A47M, malleable-iron castings or
ASTM A536, ductile-iron castings with dimensions matching pipe.
b. Grooved-End, Ductile-Iron-Piping Couplings: AWWA C606, for ductile-iron-pipe dimensions. Include ferrous housing sections, gasket suitable for water, and bolts and nuts.
5. Mechanical-Joint, Ductile-Iron Fittings: AWWA C110, ductile- or gray-iron standard pattern or AWWA C153, ductile-iron compact pattern.
a. Glands, Gaskets, and Bolts: AWWA C111, ductile- or gray-iron glands, rubber gaskets, and steel bolts.
6. Push-on-Joint, Ductile-Iron Fittings: AWWA C153, ductile-iron compact pattern.
a. Gaskets: AWWA C111, rubber.
7. Flanges: ASME B16.1, Class 125, cast iron.
C. ENCASEMENT FOR PIPING:
1. Polyethylene film
a. Standard: ASTM A674 or AWWA C105.
b. Material: High-density, cross-laminated PE film of 0.004-inch (0.10-mm) minimum thickness.
c. Form: tube.
d. Color: Black or natural.
2. Wax tape
a. Need to write requirements.
2.03 STEEL PIPE AND FITTINGS:
A. Comply with requirements in "Piping Schedule" Article for applications of pipe, tube, and fitting materials, and for joining methods for specific services, service locations, and pipe sizes.
B. Schedule 40, Galvanized and Black Steel Pipe: ASTM A53, ASTM A795. Pipe ends may be factory or field formed to match joining method.
C. Schedule 10, Galvanized and black Steel Pipe: ASTM A135 or ASTM A795, Schedule 10 in
NPS 5 and smaller; and NFPA 13-specified wall thickness in NPS 6 to NPS 12. Pipe ends may be factory or field formed to match joining method.
D. Galvanized and Uncoated, Steel Couplings: ASTM A865, threaded.
E. Galvanized and Uncoated, Cast-Iron Threaded Fittings: ASME B16.4, Class 125, 175 psig rated or Class 250, 400 psig rated, standard pattern.
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NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
F. Galvanized and Uncoated, Malleable Iron Threaded Fittings: ASME B16.3, Class 150, 300 psig rated, standard pattern.
G. Malleable-Iron Unions: ASME B16.39.
H. Cast-Iron Flanges: ASME B16.1, Class 125, 200 psig rated or Class 250, 500 psig rated.
Fittings larger than NPS 12: Class 250, 300 psig rated.
I. Steel Flanges and Flanged Fittings: ASME B16.5, Class 150.
J. Steel Welded Fittings: ASTM A234 and ASME B16.9.
K. Stainless Steel Welded Fittings: ASTM A403 socket welded fittings.
L. Grooved-Couplings and Fittings:
1. Galvanized and Factory Painted, Grooved-End Fittings for Steel Piping: ASTM A47, malleable-iron casting or ASTM A536, ductile-iron casting; with dimensions matching steel pipe.
2. Galvanized and Factory Painted Grooved-End-Pipe Couplings for Steel Piping:
AWWA C606, rigid pattern, unless otherwise indicated, for steel-pipe dimensions.
Include ferrous housing sections, EPDM-rubber gasket, and bolts and nuts.
3. Reducing couplings are not acceptable. Tapered reducing fittings shall be used.
M. Provide shop welded piping, fittings and flanges where welded connections are used.
N. Push on, plain end, “roust-a-bout” type and fittings using set screws are not acceptable.
O. Split flanges and flange adapters are not acceptable.
P. Install fittings manufactured with outlets the same size as the piping to be installed in the fittings. Bushings are not acceptable.
Q. Threaded pipe couplings with continuous threads through the coupling are not acceptable.
R. 1/2-inch extension couplings shall not be used at sprinkler connections.
2.04 PIPING JOINING MATERIALS:
A. Pipe-Flange Gasket Materials: AWWA C110, rubber, flat face, 1/8 inch thick or ASME
B16.21, nonmetallic and asbestos free.
1. Class 125, Cast-Iron Flanges and Class 150, Bronze Flat-Face Flanges: Full-face gaskets.
2. Class 250, Cast-Iron Flanges and Class 300, Steel Raised-Face Flanges: Ring-type gaskets.
B. Metal, Pipe-Flange Bolts and Nuts: ASME B18.2.1, carbon steel unless otherwise indicated.
C. Welding Filler Metals: Comply with AWS D10.12 for welding materials appropriate for wall thickness and chemical analysis of steel pipe being welded.
2.05 LISTED FIRE-PROTECTION VALVES:
A. Bronze Check Valves:
1. Pressure Rating: 175 psig minimum.
2. Sizes: NPS 1-1/2 and smaller.
3. Standard: MSS SP-80
4. Type: Swing check with renewable disc and seat.
5. Body Material: Bronze.
6. End Connections: Threaded.
B. Iron Check Valves:
1. Pressure Rating: 175 psig minimum .
2. Type: Swing check with renewable disc and seat.
3. Body Material: Cast iron or ductile iron.
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NEBRASKA ARMY NATIONAL GUARD
NEW READINESS CENTER
BELLEVUE, NEBRASKA
4. End Connections: Flanged or grooved.
5. Required options:
a. Tapped for automatic ball drip.
b. Provide with removable inspection cover.
C. Iron OS&Y Gate Valves:
1. Pressure Rating: 250 psig minimum.
2. Type: Resilient wedge OS&Y gate valve.
3. Body Material: Cast or ductile iron. Fusion bonded epoxy coating inside and out.
4. Wedge material: EPDM encapsulated cast or ductile iron.
5. End Connections: Flanged or grooved.
6. Accessories: Pre-grooved stem for mounting tamper switch.
D. Indicating-Type Butterfly Valves:
1. Pressure Rating: 175 psig minimum.
2. Valve Type: Butterfly.
3. Body Material: Epoxy coated ductile iron.
4. Disc material: EPDM encapsulated ductile iron.
5. End Connections: Flanged or grooved.
6. Required options: Provide with visual indicating device and integral supervisory switch with two single-pole, double-throw circuits.
2.06 TRIM AND DRAIN VALVES:
A. Angle Valves:
1. Type: Screw in bonnet angle valve with integral seat and renewable disc.
2. Body Material: Bronze or Brass.
B. Ball Valves:
1. Type: Full port ball valve with blowout-proof stem.
2. Body Material: Bronze or Brass.
2.07 SPECIALTY VALVES:
A. General Requirements:
1. Body Material: Cast or ductile iron.
2. Size: Same as connected piping.
B. Automatic (Ball Drip) Drain Valves:
1. Pressure Rating: 175 psig minimum.
2. Type: Automatic draining, ball check.
3. Materials: Bronze body with stainless steel or brass ball check.
4. End Connections: Threaded.
C. Pressure Relief Valves:
1. Type: Automatic resetting pressure relief valve
2. Materials: Bronze body with stainless steel spring.
3. Pressure setting: Factory set to relieve at 165psi .
4. End Connections: Threaded.
D. Inspector’s Test Assemblies:
1. Pressure Rating: 175 psig minimum.
2. Body Material: Brass or bronze housing with orifice, sight glass, integral test valve and pressure relief valve factory set to 175 psi.
3. Size: Same as connected piping.
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4. Inlet and Outlet: Threaded.
5. Individual components may be used in place of a listed assembly. This must include a test valve, sectional or main drain valve, sight glass, smooth bore corrosion-resistant orifice and pressure relief valve piped to drain.
2.08 FIRE-DEPARTMENT CONNECTIONS:
A. Flush-Type, Fire-Department Connection:
1. Type: Flush, for wall mounting.
2. Pressure Rating: 175 psig minimum.
3. Body Material: Corrosion-resistant metal.
4. Inlets: Brass with threads according to NFPA 1963 and matching local fire-department sizes and threads. Include extension pipe nipples, brass lugged swivel connections, and check devices or clappers.
5. Caps: Brass, lugged type, with gasket and chain.
6. Escutcheon Plate: Rectangular, brass, wall type.
7. Outlet: With pipe threads.
8. Outlet Size: NPS 4.
9. Number of Inlets: Two.
10. Escutcheon Plate Marking: Similar to "AUTO SPKR."
11. Finish: Polished chrome plated.
2.09 BACKFLOW PREVENTER:
A. Double Check Valve Assembly
1. Type: Double Check Valve
2. Operation: Continuous-pressure applications unless otherwise indicated.
3. Approval: FCCCHR listed, including installed orientation.
4. Body Material: Stainless steel.
5. End Connections: Flanged.
6. Accessories:
a. OS&Y gate valves with flanged ends on inlet and outlet.
b. Bypass with displacement-type water meter, shutoff valves, and double check backflow preventer.
2.10 BACKFLOW PREVENTER TEST CONNECTION:
A. Flush-Type, Outlet:
1. Type: Flush, for wall mounting.
2. Pressure Rating: 175 psig minimum.
3. Body Material: Corrosion-resistant metal.
4. Outlets: Brass with threads according to NFPA 1963 and matching local fire-department sizes and threads. Include extension pipe nipples and brass lugged swivel connections.
Provide without drop clappers.
5. Caps: Brass, lugged type, with gasket and chain.
6. Escutcheon Plate: Rectangular, brass, wall type.
7. Outlet: With pipe threads.
8. Number of Outlets: Three.
9. Escutcheon Plate Marking: Similar to "BACKFLOW TEST"
10. Finish: Polished chrome plated.
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11. Inlet Size: NPS 4.
2.11 SPRINKLER SPECIALTY PIPE FITTINGS:
A. Mechanical tee and cross fittings are not acceptable.
2.12 SPRINKLERS:
A. General Requirements:
1. Pressure Rating for Automatic Sprinklers: 175 psig minimum.
B. Quick Response Sprinklers:
1. General Requirements:
a. Temperature Rating: As indicated on the drawings or as required by NFPA 13.
b. K factor: As indicated on the drawings or as required by UFC 3-600-01.
2. Quick Response Recessed Pendent:
a. Type: Recessed quick response pendent sprinkler with adjustable two-piece escutcheon.
b. Finish: Sprinkler and escutcheon finish shall be polished chrome.
3. Quick Response Upright:
a. Type: Quick response upright sprinkler.
b. Finish: Match arch finish in finished areas. Rough brass finish in unfinished areas without suspended ceilings and beneath ductwork and ceiling mounted equipment.
4. Quick Response Recessed Dry Sidewall:
a. Type: Quick response recessed dry sidewall sprinkler with adjustable two-piece escutcheon and flashing or boot as recommended by the manufacturer.
b. Finish: Sprinkler and escutcheon finish shall be polished chrome.
c. Provide with dry barrel length meeting the requirements of NFPA 13 and the manufacturer’s recommendations.
C. Extended coverage upright and pendent type sprinklers are not acceptable.
D. Sprinkler cabinet per NFPA 13 with sprinklers and a wrench for each type of sprinkler.
E. Second cabinet with a sprinkler escutcheon for each sprinkler that is stored in the sprinkler cabinet.
F. Sprinkler Guards:
1. Guards shall be listed with the sprinkler they are installed on.
2. Type: Wire cage with fastening device for attaching to sprinkler piping.
2.13 ALARM AND SUPERVISORY DEVICES:
A. Alarm and supervisory device types shall match piping and equipment connections.
B. Water-Flow Indicators:
1. Water-Flow Detector: Electrically supervised.
2. Components: Two single-pole, double-throw circuit switches for isolated alarm and auxiliary contacts, 7 A, 125-V ac and 0.25 A, 24-V dc; complete with factory-set, field-adjustable retard from 0-90 seconds to prevent false signals and tamperproof cover.
a. Flow switches supervising piping supplying elevator machine room sprinklers shall not include a retard function.
3. Option: Provide with contacts to send supervisory signal if cover is removed.
4. Type: Paddle operated.
5. Pressure Rating: 250 psig.
6. Design Installation: Horizontal or vertical.
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C. Valve Supervisory Switches:
1. Type: Standard OS&Y type switch. Electrically supervised. Plug type switches are not allowed except where specifically indicated.
2. Components: Single-pole, double-throw switch with normally closed contacts. Provide with tamperproof cover.
3. Option: Provide with contacts to send supervisory signal if cover is removed.
4. Design: Signals that controlled valve is in other than fully open position.
2.14 PRESSURE GAUGES:
A. Dial Size: 3-1/2- to 4-1/2-inch diameter.
B. Water Pressure Gauge Range: 0 to 300 psig with “Water” label on dial face.
2.15 AUTOMATIC AIR VENTS:
A. Type: Automatic air vent piped to exterior or interior drain in a visible location.
B. Options: Provide without electronic monitoring.
C. Alternate: Models with a secondary valve that automatically closes in case of air vent failure and with a visual indicator visible from the floor are acceptable and are not required to be piped to drain.
2.16 SUPPORTS, ANCHORS AND SEALS:
A. Hangers and Supports:
1. Hangers and hanger assemblies shall be UL listed or FM Approved for use in fire protection systems.
2. Hangers and supports shall be galvanized.
B. Pipe Stands:
1. Type: Adjustable Pipe Saddle Support with U-bolt and Pipe Stanchion similar to Anvil
Figure 265 Adjustable Pipe Saddle Support with U-bolt and Anvil Figure 63 Type T Pipe
Stanchion.
2. Stanchion diameter shall be per manufacturer’s published recommendations but not less than 2” diameter.
3. Base plate size shall be per manufacturer’s published recommendations with holes for bolting to floor slab.
4. Saddle shall include U-bolt or pipe clamp.
5. Pipe stands and bases shall be galvanized.
C. Sleeves and Seals:
1. Pipe sleeves through floor slabs, concrete, masonry or brick partition walls, fire barriers, fire walls and exterior building walls above and below grade shall be Schedule 40 black or galvanized steel pipe, fabricated of new material, cut square and reamed.
2. Where piping passes through sleeves in floor slabs on grade or through building walls below grade, provide a modular mechanical seal, equal to Link-Seal, as manufactured by
Pipeline Seal & Insulator, Inc.
2.17 PAINT AND PIPING IDENTIFICATION:
A. Paint
1. Materials for painting of piping shall be in accordance with Division 09.
B. Piping Identification. Use one of the following:
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1. Equal to Seton Setmark snap-on pipe markers, red background with white letters. Snap-
Around markers for pipe sizes 1 inch to 5-7/8 inch and Strap-Around for sizes 6 inch and larger.
2. Equal to Seton Opti-Code self-adhesive pipe markers with arrows and pipe banding tape.
PART 3 - EXECUTION
3.01 DESIGN CRITERIA:
A. Design and hydraulically calculate the piping systems including the locations of all valves, devices and sprinklers. Design sprinkler systems based on the hazard of the occupancy as determined by the most stringent requirements of State and Local Building and Fire Codes, UFC 3-600-01, NFPA 13, and the Contract Documents.
B. Water supply flow test information on the plans is for bid purposes only. Perform a new water flow test at the location of the building to verify the available water supply prior to design and installation of the sprinkler system. Perform the flow test in accordance with NFPA 291 and
NFPA 13. Submit new hydrant flow test with shop drawings. Flow test information shall include date, time, witness, location of flow and pressure hydrant, static and residual pressures, pitot pressures, hydrant coefficients, residual flow rates and hydrant elevations relative to the building floor. Include a site plan with water main locations, static and residual hydrant location, and hydrant and ground floor building elevations.
C. The Fire Protection Contractor shall include an additional safety factor of 10 psi in their bid to account for possible drop in water pressure from the information provided in the bid documents. No additional costs will be awarded for a drop in water pressure from the flow test information in bid documents and the flow test performed by the Fire Protection Contractor for hydraulic design of the sprinkler system. This additional safety factor, above what is required in other paragraphs of this specification, is not required to be included in the final hydraulic calculations.
D. Provide a margin of safety for all hydraulically calculated sprinkler systems 5 psi or 10 percent
(whichever is larger), including losses through water-service piping, valves, and backflow preventers.
E. The hydraulic calculations shall include a minimum pressure drop across backflow preventers of 8 psi, or the actual pressure drop, whichever is greater.
F. The hydraulic remote area may not be reduced when quick response sprinklers are installed per
NFPA 13.
G. The hydraulic remote area shall be increased by 30 percent without revising the density in areas with sloped ceilings exceeding 2 in 12.
3.02 SERVICE-ENTRANCE PIPING AND WATER-SUPPLY CONNECTIONS:
A. Connect sprinkler piping to water-service piping for service entrance to building at a location five feet outside the building. Comply with requirements for exterior piping in DIVISION 22 and DIVISION 33 for domestic water piping.
B. Piping upstream of the backflow preventor shall comply with Division 22.
C. Install shutoff valve, backflow preventer, pressure gauge, drain, and other accessories indicated at connection to water-service piping.
D. Install shutoff valve, check valve, pressure gauge, and drain at connection to water service.
1. The shutoff valves on either side of the backflow prevention device or check valve shall be OS&Y gate valves.
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E. Coordinate with underground utility contractors for flushing of underground water service prior to connection to sprinkler system piping.
F. Do not connect the sprinkler system to the underground piping until the underground piping has been flushed and hydrostatically tested in accordance with NFPA 24 and NFPA 13. This includes the piping from 5 feet outside the building to the interior of the building. Submit test certificates to the Engineer prior to making connection.
3.03 PREPARATION OF PIPING:
A. Ream pipe ends to remove burrs. Make joints smooth and unobstructed inside. Remove any obstructions or debris inside piping, blowing it out with compressed air or otherwise cleaning it internally immediately prior to assembly.
B. Pipe shall be delivered with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe end damage and to prevent entrance of dirt, debris, and moisture.
3.04 PIPING INSTALLATION:
A. Locations and Arrangements: Drawing plans, schematics, and diagrams indicate general location and arrangement of piping. Install piping as indicated, as far as practical.
B. Provide 3D fire protection coordination drawings for coordination with the other construction trades and participate in coordination meetings to ensure all construction and building systems are coordinated. No change orders will be granted as a result of lack of coordination.
C. Coordinate fire protection installation with mechanical components including ductwork and piping, electrical systems and components, and all other building systems, as well as structural and architectural drawings.
D. Comply with requirements for installation of sprinkler piping in NFPA 13.
E. Install sprinkler piping with drains for complete system drainage.
F. Install chrome plated escutcheons on all exposed pipes passing through walls, floors and ceilings.
G. Install automatic air vents at the high point of each wet pipe sprinkler system to automatically vent air from the sprinkler system piping. Install a ball valve in the piping prior to each automatic air vent. Air vents with a visual indicator shall be installed such that they are visible from the floor. They shall not be in installed above ceilings, ductwork or other equipment.
H. Install a flanged connection, grooved connection or union on both sides of all equipment.
Unions shall only be used on NPS 1 threaded piping.
3.05 PIPING SUPPORT:
A. Point loads on the building structure due to sprinkler piping may not exceed 300 lb. on any single structural member except where indicated otherwise on the drawings. This includes the weight of the water filled pipe only. The additional 250 lb. required by NFPA 13 is not required to be included in this maximum point load.
B. Install hangers and supports for sprinkler system piping according to NFPA 13. Comply with requirements for hanger materials in NFPA 13.
C. Pipe stands shall be securely fastened to the floor slab with 1/2 inch concrete anchors.
D. Threaded rod used to support piping shall not be formed or bent. Threaded rod shall not be used in the horizontal position to support vertical loading or as a pipe stand or column.
E. Sprinkler risers in stairs or other accessible locations shall be provided with supports to prevent lateral movement at the top and bottom of the riser.
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3.06 JOINT CONSTRUCTION:
A. Install couplings, flanges, flanged fittings, unions, nipples, and transition and special fittings that have finish and pressure ratings same as or higher than system's pressure rating for aboveground applications unless otherwise indicated.
B. Install a union adjacent to each valve in NPS 1 threaded piping. Install a grooved coupling or flange adjacent to each valve in threaded piping NPS 1-1/4 and larger.
C. Install flanges or grooved couplings on valves, apparatus, and equipment having grooved or flanged connections.
D. Flanged Joints: Select appropriate gasket material in size, type, and thickness suitable for water service. Join flanges with gasket and bolts according to ASME B31.9.
E. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut threads full and clean using sharp dies. Ream pipe ends to remove burrs and restore full inside diameter prior to threading. Join pipe fittings and valves as follows:
1. Apply appropriate tape or thread compound to external pipe threads.
2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or damaged.
3. When externally galvanized piping is threaded, coat exposed threads with a cold galvanizing, zinc coating.
F. Welded Joints: Construct joints according to NFPA 13, using qualified processes and welding operators that meet or exceed the requirements of AWS B2.1, Specification for Welding
Procedure and Performance Qualification, and ASME Boiler and Pressure Vessel Code, Section IX, “Welding and Brazing Qualifications”.
1. Shop weld pipe joints where welded piping is indicated.
2. Do not use welded joints for galvanized-steel pipe.
G. Grooved joints:
1. All grooved couplings and fittings in a system shall be manufactured by the same manufacturer. Mixing of grooved couplings and fittings by different manufacturers or different designs of the same manufacturer is not acceptable.
2. Grooved couplings on mains shall be rigid type couplings except where flexible couplings are required by NFPA 13.
3. Steel-Piping, Cut-Grooved Joints: Cut square-edge groove in end of pipe according to
AWWA C606. Assemble coupling with housing, gasket, lubricant, and bolts. Join steel pipe and grooved-end fittings according to AWWA C606 for steel-pipe joints.
4. Steel-Piping, Roll-Grooved Joints: Roll rounded-edge groove in end of pipe according to
AWWA C606. Assemble coupling with housing, gasket, lubricant, and bolts. Join steel pipe and grooved-end fittings according to AWWA C606 for steel-pipe grooved joints.
H. Flat circular washers shall be provided under all bolt heads and nuts. Washers are not required on listed assemblies such as grooved couplings except where washers are part of the listed assembly.
3.07 PENETRATIONS, SLEEVES AND SEALS:
A. Openings for penetrations in walls and floors shall be made using a hole saw or core drill.
B. Install sleeves for piping passing through penetrations in floors, concrete and masonry partitions and walls, fire barriers and fire walls.
1. Sleeves are not required for core-drilled holes except where required by a UL through-penetration firestop system.
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2. Install sleeves in concrete floors, concrete roof slabs, and concrete walls as new slabs and walls are constructed.
3. Permanent sleeves are not required for holes in slabs formed by molded-PE or -PP sleeves.
4. Cut sleeves to length for mounting flush with both surfaces.
a. Exception: Extend sleeves installed in floors of mechanical equipment areas or other wet areas 2 inches above finished floor level.
5. Using grout, seal the space outside of sleeves in slabs and walls.
C. Install sleeves for pipes passing through interior partitions.
1. Sleeves are not required for core drilled holes or holes made using a hole saw.
2. Cut sleeves to length for mounting flush with both surfaces.
3. Install sleeves that are large enough to provide 1/4-inch annular clear space between sleeve and pipe or pipe insulation.
4. Seal annular space between sleeve and piping or piping insulation; use joint sealants appropriate for size, depth, and location of joint. Comply with requirements for sealants specified in SECTION 07 92 00 - JOINT SEALANTS.
D. Fire-Barrier and Fire Wall Penetrations: Maintain indicated fire rating of walls, partitions, ceilings, and floors at pipe penetrations. Seal pipe penetrations with a UL listed firestop system. Comply with requirements for firestopping specified in SECTION 07 84 13 -
PENETRATION FIRESTOPPING.
1. Label all penetrations to indicate UL system number and additional information as required by SECTION 07 84 13.
E. Install modular mechanical seal systems in sleeves in exterior concrete walls and slabs-on-grade at service piping entries into building.
1. Select type, size, and number of sealing elements required for piping material and size and for sleeve ID or hole size. Position piping in center of sleeve. Center piping in penetration, assemble sleeve-seal system components, and install in annular space between piping and sleeve. Tighten bolts against pressure plates that cause sealing elements to expand and make a watertight seal.
3.08 VALVE AND SPECIALTIES INSTALLATION:
A. Install listed fire-protection valves, trim and drain valves, specialty valves and trim, controls, and specialties according to NFPA 13 and Authorities Having Jurisdiction.
B. Install listed fire-protection shutoff valves supervised open, located to control sources of water supply except from fire department connections. Install permanent identification signs indicating portion of system controlled by each valve.
C. Install check valve in each water supply connection. Install backflow preventers instead of check valves in potable water supply sources. Install pressure gauges on both sides of check valves and backflow preventers.
1. Install backflow preventers with bottom of the backflow preventer not more than 24 inches above finished floor.
2. Install backflow preventer test connections to allow forward flow testing of the backflow preventer at a flow rate equal to the highest sprinkler system demand.
D. Install riser check valves in each wet pipe sprinkler system riser. Install pressure gauges on both sides of the riser check valve.
E. Install pressure gauges on riser or feed main and at each sprinkler test connection. Include pressure gauges with connection not less than NPS 1/4 and with soft metal seated globe valve, 211313-16
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arranged for draining pipe between gauge and valve. Install gauges to permit removal, and install where they will not be subject to freezing.
F. Normally closed valves required to be electronically supervised shall be butterfly valves designed and factory wired with a supervisory switch to supervise the valve in the closed position.
G. Install a pressure relief valve in each wet pipe sprinkler system riser. Pipe discharge to drain.
H. Control and trim valves shall be installed in accessible locations not more than 7’-0” above finished floor.
I. Where auxiliary drains discharge to a location other than the exterior of the building, the drain valve shall be located within sight of the drain piping discharge.
J. Do not locate auxiliary drains at or near the structure. Locate auxiliary drain valve at a location accessible from the floor. Pipe outlets to exterior at grade level or to hose connection 12 inches above finished floor. Plug outlets.
K. Provide a minimum of 3 feet of clearance in front of all equipment and 6 inches behind the equipment.
L. Restrain grooved OS&Y gate valves installed in horizontal piping to prevent valve from rotating due to weight of the valve stem.
3.09 INSPECTOR’S TEST CONNECTION:
A. For each sprinkler system and for each waterflow alarm device, where multiple devices occur, furnish and install an inspector's test assembly. Pipe discharge from this assembly, to building exterior or as shown on drawings. Provide splash block at building exterior.
B. Furnish and install an inspector’s test connection on the remote branch line of each sprinkler system where required by the contracting officer.
3.10 SUPERVISORY SWITCHES, LOCKS AND SEALS:
A. Furnish and install a supervisory switch on each shutoff valve in the fire protection piping system to indicate when valve is not fully open. Adjust each supervisory switch to operate in accordance with NFPA 13 and NFPA 72.
B. In addition to the supervisory valve switches provided on each sprinkler system valve, the valves shall be locked or secured in the open position. All valve locks shall be keyed the same.
3.11 FLOW SWITCHES:
A. Furnish and install a flow switch for each system to monitor water flow in accordance with
NFPA 72. Set retard…
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