Att_003_Specifications_Water_Based_system__Rev._(04-20-2017).pdf

GENERAL SPECIFICATIONS:

WATER-BASED FIRE PROTECTION SYSTEM

Rodeo Valley Stables Golden Gate National Recreation Area Buildings 901 & 902 Bunker Road Fort Barry, Marin Headlands Sausalito, California

PART 1 – GENERAL

1.1 PROJECT DESCRIPTION

A. The work consists of providing a new automatic water-based fire suppression system, buried and above ground distribution piping and other related items for complete coverage of a single story historic structure. The system shall be designed, approved by the NPS Fire Marshal and installed in accordance with National Fire Protection Association codes and standards identified in this specification, including but not limited to sections 1.6 , 1.8 and National Park Service standards.

1.2 LOCATION

A. The project is located in the Marin Headlands Building 901 & building 902 district of Golden Gate

National Recreation Area; AKA Rodeo Valley Stables, 901 & 902 Bunker Road, Fort Barry, Sausalito Ca.

1.3 SPECIAL PROCEDURES

A. All work including but not limited to architectural, mechanical, electrical and structural shall be performed with extreme care to avoid damage to existing materials to remain or materials to be removed and reinstalled. Where “hot work” (open flame, grinding, welding, brazing, smelting) is required the Contractor shall apply for, and have on site at all times, a valid National Park Service hot work permit.

B. The authority having jurisdiction (AHJ) is the National Park Service Pacific West Region Structural Fire

Management Officer.

1.4 MINIMAL DAMAGE

A. It is the intent of this project to maintain the historic and non-historic finishes and materials with

“minimal damage” due to the work. Minimal damage is defined as removal and replacement with the same removed material without discernible damage to the material or no more than one small hole that is less than two (2) inch square in any one foot square area. Damaged materials shall be replaced with similar or in kind materials, as approved by the Contractor Officer.

B. If required the Contractor shall provide temporary service for utilities that are disrupted by work.

Contractor shall coordinate all temporary service disruptions with the NPS Project Manager and other contractors on site. Contractor shall notify the Contracting Officer 1 week prior to any planned utility interruptions.

C. Piping offsets, fittings, and any other accessories required shall be furnished as required to provide a complete installation and to eliminate interference with other construction. Sprinklers shall be installed over and under ducts, piping and platforms when such equipment can negatively affect or disrupt the sprinkler discharge pattern and coverage.

1.5 QUALITY ASSURANCE

A. All work shall comply with the applicable requirements of this specification and the codes, standards, and entities identified in section 1.6 & 1.8 of this specification, and applicable state and local codes.

B. Where required by applicable NFPA codes and standards or this specification, devices and equipment shall be UL listed or FM approved.

C. Qualifications:

Designer/Installer: Company specializing in design and installation of water-based fire suppression systems.

1. Experience: Continuously designed and installed water-based fire suppression systems in state of

California for five years.

2. Designer: Registered professional fire protection engineer in state of California or a certified NICET

Level III Automatic Sprinkler System Layout Technician.

3. Contractor shall be certified by the material/equipment manufacturer as trained in, and as knowledgeable of, the manufacturer's standard practice and procedure relating to installation of sprinkler systems. The Contractor shall be certified and licensed by the state and local jurisdictions, as applicable.

4. Contractor shall be a firm specializing in performing work of this section with a minimum of five years’ experience and must be regularly engaged in the installation of water-based fire suppression systems.

5. Contractor shall have successfully installed automatic water-based fire suppression systems of the same type and design as specified herein. The Contractor shall provide evidence of such qualifications. The data shall include:

a. Names

b. Locations of at least three installations where the Contractor has installed such systems.

c. The Contractor shall indicate the type and design of each system and certify each system has performed satisfactorily in the manner intended for a period of not less than 12 months.

d. The Contractor shall submit a copy of a valid state sprinkler contractor certificate and license, as applicable.

D. Personnel:

1. Design: All fire sprinkler plans submittals, to include shop drawings and working plans, shall be developed in accordance with codes and standards identified in this specification by a Fire Protection

Engineer registered in the State of California, or a certified NICET Level III Automatic Sprinkler System

Layout Technician.

2. Installation Supervision: The sprinkler system installation supervisor shall be qualified and experienced in the design and installation requirements of sprinkler systems in accordance with NFPA 13 and state requirements.

3. Contractor shall provide workers normally employed in the field and as otherwise specified in the specification and NFPA 13.

E. Where required by this specification or NFPA 13 equipment and components shall bear the UL and/or FM label or marking.

F. Other Requirements:

1. The design, equipment, materials, installation, and workmanship shall be in strict accordance with the required and advisory provisions of this specification and NFPA 13 and other applicable NFPA codes.

2. The advisory provisions (Annexes) of the NFPA publications referred to herein shall be considered to be mandatory, as though the word "shall" has been substituted for "should" wherever it appears. If there are any conflicts between these specifications and the referenced standards and publications, the most stringent requirement shall apply.

3. The Contractor shall coordinate with the NPS and all trades and contractors on the site to ensure that the final installation of the water-based fire suppression system meets the minimum installation requirements of NFPA 13.

1.6 REFERENCES (Current editions)

A. National Fire Protection Association (NFPA)

1. NFPA 13 (Standard for the Installation of Sprinkler Systems – 2016 Edition)

2. NFPA 20 (Standard for the Installation of Stationary Pumps for Fire Protection - 2016 Edition)

4. NFPA 22 (Standard for Water Tanks for Private Fire Protection - 2013 Edition)

5. NFPA 24 (Standard for the Installation of Private Fire Service Mains and Their Appurtenance - 2016

Edition)

6. NFPA 25 (Inspection, Testing and Maintenance of Water-Based Fire Protection Systems - 2014

Edition)

7. NFPA 70 (National Electrical Code - 2014 Edition)

8. NFPA 72 (National Fire Alarm Code - 2016 Edition)

9. NFPA 101 (Life Safety Code - 2015 Edition)

10. NFPA 170 (Standard for Fire Safety and Emergency Symbols – 2015 Edition)

11. NFPA 291 (Recommended Practice for Fire Flow Testing and Marking of Hydrants - 2016)

B. International Code Council

1. International Building Code 2015 edition

2. International Fire Code – 2015 edition

C. Underwriters Laboratories, Inc. (UL)

1. UL-193 Alarm Valves for Fire-Protection Service

2. UL-199 Automatic Sprinklers for Fire-Protection Service

3. UL-1468 Direct Acting Pressure Reducing and Pressure Restricting Valves

D. Factory Mutual System (FM)

1. FM Approval Guide - 2003 edition

E. American National Standards Institute (ANSI)

1. ANSI/ASME B1.20.1 - Pipe Threads, General Purpose

2. ANSI/ASME B16.1 - Cast Iron Pipe Flanges and Flanged Fittings

3. ANSI/ASME B16.3 - Malleable Iron Threaded Fittings, Class 150 and 300

4. ANSI/ASME B16.4 - Cast Iron Threaded Fittings, Class 125 and 250

5. ANSI/ASME B16.5 - Steel Pipe Flanges and Flanged Fittings

6. ANSI/ASME B16.9 - Factory-made Wrought Steel Butt-weld Fittings

7. ANSI/ASME B16.11 - Forged Steel Fittings, Socket-Welded and Threaded

8. ANSI/ASME B16.21 - Nonmetallic Flat Gaskets for Pipe Flanges

9. ANSI/ASME B16.25 - Butt-welded Ends for Pipe, Valves, Flanges, and Fittings

10. ANSI/ASME B36.10M - Wrought Steel Pipe

F. American Society for Testing and Materials (ASTM)

1. ASTM A53 - Welded and Seamless Steel Pipe

2. ASTM A126 - Gray Iron Castings for Valves, Flanges, Pipe Fittings

3. ASTM A135 - Electric-Resistance-Welded Steel Pipe

4. ASTM A183 - Carbon Steel Track Bolts and Nuts

5. ASTM A193 - Alloy-Steel and Stainless Steel Bolting Materials for High Temperature Service

6. ASTM A194 - Carbon and Alloy Steel Nuts and Bolts for High Pressure and High-Temperature

Service

7. ASTM A197 - Cupola Malleable Iron

8. ASTM A234 - Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and Elevated

Temperatures

9. ASTM A307 - Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength

10. ASTM F436 - Hardened Steel Washers

11. ASTM A536 - Ductile Iron Castings

12. ASTM A795 - Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for

Fire Protection Use

G. American Welding Society (AWS)

1. AWS D10.9 - Specification for Qualification of Welding Procedures and Welders for Piping and

Tubing

H. American Water Works Association (AWWA)

1. AWWA C104 - Cement Mortar Lining for Ductile Iron Pipe and Fittings for Water

2. AWWA C110 - Ductile Iron and Gray Iron Fittings, 3-in. Through 48-in. for Water and Other Liquids

3. AWWA C111 - Rubber Gasket Joints for Ductile Iron Pressure Pipe and Fittings

4. AWWA C115 - Flanged Ductile Iron Pipe and Threaded Flanges

5. AWWA C150 - Thickness Design of Ductile Iron Pipe

6. AWWA C151 - Ductile Iron Pipe Centrifugally Cast in Metal Molds or

Sand-Lined Molds, for Water or Other Liquids

7. AWWA C153 - Ductile Iron Compact Fittings, 3-in. through 12-in., for Water and Other Liquids

8. AWWA C600 - Installation of Ductile Iron Water Mains and Their Appurtenances

1.6.1 DEFINITIONS

AHJ: Authority Having Jurisdiction. The Authority Having Jurisdiction is the National Park Service Pacific

West Structural Fire Management Officer

ALARM SIGNAL: Signifies a state of emergency requiring immediate action. Pertains to signals from operation of an alarm initiating device.

APPROVED: Acceptable to the Authority Having Jurisdiction.

AUTOMATIC FIRE ALARM SYSTEM: A system providing an emergency function without the necessity of human intervention and activated as a result of a predetermined temperature rise, or increase in level of products of combustion, in accordance with the minimum requirement of NFPA 72.

CO: Contracting Officer

COR: Contracting Officer’s Representative

A sprinkler system employing automatic sprinklers with a supplemental detection system installed in the same areas as the sprinklers. The detection system also serves as an automatic fire alarm system.

FIRE PROTECTION SPRINKLER CONTRACTOR: A person or company engaged in the planning, sale, installation, repair, alteration, addition, maintenance, or inspection of fire protection sprinkler systems or water spray systems.

FLOW: The flow rate of the water from the source under flow conditions.

GRADE: Lowest point of elevation of the finished surface of ground, paving, or sidewalk with the area between the building and property line.

HAZARDOUS AREA/ROOM: An area in a structure of building used for the process or storage that involves highly combustible, flammable, or explosive products or other material which may present a potential danger to life, health, property through fire, explosion, etc.

HISTORIC STRUCTURE: A building deemed to have historical, architectural, or cultural significance by regional or national jurisdiction.

HYDRAULICALLY DESIGNED SYSTEM: A calculated sprinkler system in which pipe sizes are selected on a pressure loss basis to provide a prescribed water density, in gallons per minute per square foot (min), or a prescribed minimum discharge pressure or flow per sprinkler, distributed with a reasonable degree of uniformity over a specified area.

NICET: National Institute for Certification in Engineering Technologies

NPS: National Park Service

PIPE SCHEDULE SYSTEM:

A fire sprinkler system in which the pipe sizing is selected from a schedule that is determined by the occupancy classification, and in which a given number of sprinklers are allowed to be supplied from specific sizes of pipe.

SPRINKLER SYSTEM: A sprinkler system employing automatic sprinklers that are attached to a piping system that contains air that might or might not be under pressure, with a supplemental detection system installed in the same areas as the sprinklers and shall be one of the following:

RESIDUAL PRESSURE: The pressure available from the source under flow conditions.

SPRINKLER SYSTEM: For fire protection purposes, an integrated system of underground and overhead piping designed in accordance with fire protection engineering standards. The installation includes one or more automatic water supplies. The portion of the sprinkler system aboveground is a network of specially sized or hydraulically designed piping installed in a building, structure, or area, generally overhead, and to which sprinklers are attached in a systematic pattern. The valve controlling each system riser is located in the system riser or its supply piping. Each sprinkler system riser includes a device for actuating an alarm when the system is in operation. The system is usually activated by heat from a fire and discharges water over the fire area.

STATIC PRESSURE: The pressure available from the source when no water is flowing to the system.

SUPERVISORY SIGNAL: Indicates abnormal status or need for action regarding fire suppression or other protective system, such as a control valve supervisory/tamper switch.

TROUBLE SIGNAL: Indicates that a fault, such as an open circuit or ground, has occurred in indicating appliance circuit, initiating device circuit, or internal to FACP.

WATER-BASED FIRE SUPPRESSION SYSTEM (FIRE SPRINKLER): A system of overhead and underground piping to protect the interior or exterior of a building or structure from fire where the primary extinguishing agent is water.

WATERFLOW ALARM DEVICE: A mechanical device mounted on the sprinkler pipe that has a paddle internal to the sprinkler pipe to monitor the water for flow. This device is typically monitored by the building fire alarm system.

1.7 SYSTEM DESCRIPTION

Provide automatic fire sprinkler system in all areas of the building/areas indicated on the drawings, and shall provide for complete fire protection coverage in accordance with required and annex provisions of

NFPA 13 for uniform distribution of water. The sprinkler system shall be hydraulically designed to provide densities as described in this specification. Activation of water flow switches shall annunciate an alarm condition at the sprinkler monitoring panel or fire alarm control panel. Valve tamper and circuit trouble conditions shall be annunciated at the sprinkler monitoring panel or fire alarm control panel as supervisory and trouble conditions, respectively. Sprinkler protection shall be provided based on the hazard classifications in this specification and NFPA 13.

A. Private Service Main:

Contractor shall design and install a private fire service main and connect it to the existing water distribution system. The fire service main shall be designed and installed in accordance with applicable sections of this specification and the minimum requirements of NFPA 13 and 24.

B. Private Water Distribution System for Fire Suppression:

Contractor shall design and install a private water distribution system consisting of a water storage tank, private fire service main, fire hydrants, fire pump, and other applicable appurtenances. The Contractor shall tie the sprinkler system to the new water distribution system. The water distribution system and fire service main shall be designed and installed in accordance with applicable sections of this specification and the minimum requirements of NFPA 13, 20, 22, and 24.

1.8 SYSTEM COMPONENTS COMPLIANCE

A. Performance requirements for the fire sprinkler will be determined by a review of construction submittals and by field inspection. Compliance review shall be performed by the AHJ, or his/her designee.

Compliance review is to verify that the Design/Build Contractor is providing systems, products, and/or materials that will satisfy the stated criteria. This review shall not relieve the Design/Build Contractor from responsibility for any errors or omissions, nor from responsibility for complying with the requirements of the project contract, this specification, or NFPA 13.

1.9 HYDRAULIC SYSTEM DESIGN PARAMETERS

A. Hazard Classifications

1. Light Hazard:

Provide sprinklers hydraulically designed to provide a minimum density of 0.10 gallons per minute per square foot over 1500 square feet of floor area, for a minimum of 30 minutes. Water supply calculation will include 100 gpm for inside and outside hose streams.

2. Ordinary Hazard (Group 1):

Provide sprinklers hydraulically designed to provide a minimum density of 0.15 gallons per minute per square foot over the hydraulically most remote 1500 square feet of floor area, for a minimum of 60 minutes where the sprinkler system is remotely electronically supervised and monitored off site (90 minutes is not remotely monitored). Water supply calculation will include 250 gpm for inside and outside hose streams.

3. Ordinary Hazard (Group 2):

Provide sprinklers hydraulically designed to provide a minimum density of 0.20 gallons per minute per square foot over the hydraulically most remote 1500 square feet of floor area, for a minimum of 60 minutes where the sprinkler system is remotely electronically supervised and monitored off site (90 minutes if, not remotely monitored). Water supply calculation will include 250 gpm for inside and outside hose streams.

B. Hydraulic Design Requirements:

1. Sprinkler Discharge Area:

The discharge area for each system shall be the hydraulically most remote area as defined in NFPA 13 and as stated for the occupancies referenced above.

2. Friction Losses:

Losses in pipe shall be calculated in accordance with the Hazen-Williams formula with "C" values in accordance with NFPA 13.

3. A minimum 10 pounds per square inch safety margin over the required pressure shall be incorporated into all hydraulic calculations.

4. If the system minimum requirements cannot be met, it is the responsibility of the contractor to identify alternative options with costs and discuss with the AHJ.

C. Water Supply:

1. Contractor shall be responsible for performing water flow test to determine the performance of the water distribution system. Flow tests shall be performed on the two fire hydrants closest to the facility in which the dry pipe sprinkler is to be installed.

The following information is required: Hydrant 1 Hydrant 2 (Flow Hydrant): Location: Location:

Static Pressure psi Gallons per Minute (Flow) _gpm Residual Pressure psi

2. Water delivery times shall comply with the following:

No of Most Maximum

Hazard Remote Sprinkler Time of Type Initially Opened Water Delivery Light 1 60 Seconds

Ordinary I 2 60 Seconds

Ordinary II 2 50 Seconds

D. Location and spacing of sprinklers in relation to the ceiling, light fixtures, ventilation equipment, storage, ceiling fans, and soffits, shall not exceed that permitted by NFPA 13 and the listing of each sprinkler. The spacing of sprinklers on the branch lines for open areas shall be uniform.

E. Drain pipes shall be 2 inch and valves shall be installed on the system to allow drainage. The system shall drain to the maximum extent possible through the main drain valve. Discharge from the drain pipe shall be to the building exterior, directed away from the building and stair. The discharge from the drain pipe shall be piped to within 8 inches of grade. Splash blocks under the drain outlet shall be provided to prevent soil erosion. Discharge to sump pumps, floor drains, sinks and waste lines, etc. is not permitted.

1.10 PIPE SCHEDULE SYSTEM DESIGN PARAMETERS

A. Pipe schedule method shall be permitted only for new installations of 5000 sq. ft. or less or for additions or modifications to existing pipe schedule systems sized according to the pipe schedules of the appropriate chapter of NFPA 13.

B. The pipe schedule method shall be permitted for use in systems exceeding 5000 sq. ft.

where the flows required by the appropriate chapter of NFPA 13 are available at a minimum residual pressure of 50 psi at the highest elevation of sprinkler.

C. Pipe schedule system shall meet the minimum flow and pressure requirements of NFPA 13.

D. The number of sprinklers on each given pipe size shall meet NFPA 13 requirements.

E. Extra hazard occupancies shall be hydraulically calculated.

F. The pipe schedule method shall be permitted for additions or modifications to existing extra hazard pipe schedule systems.

1.11 SUBMITTALS

A. The AHJ shall review and "accept/reject" or take other appropriate action on the Contractor's submittals including shop drawings, samples, documentation and as-built drawings. This review is to verify conformance to project specifications and design concepts expressed in the contract documents. The AHJ is allotted 20 working days to review and approve/reject each submittal.

B. Shop Drawings:

1. Contractor shall prepare and submit a minimum of four (4) complete sets of detailed shop drawings indicating the proposed layout of equipment, mains, risers, hangers, pipes and sprinklers.

2. Drawings shall be drawn to scale, not less than 1/8-inch equals 1-foot, on sheets not smaller than

24 inches x 36 inches, in accordance with all requirements for "Working Drawings (Plans)" as specified in

NFPA 13.

3. Drawings shall comply with chapter 22 (Plans and Calculations) of NFPA 13 and contain all applicable information found in section 22.1.3 of NFPA 13.

4. Drawings shall be stamped/sealed by a fire protection engineer registered in the State of

California, or a certified NICET Level III Automatic Sprinkler Layout Technician.

5. Drawings shall show hydraulic reference points with hydraulically most remote areas clearly shown, and proof by example that area shown is in fact the hydraulically most remote.

C. Design Data:

1. Contractor shall submit for approval to the COR calculations, and other information for the

Fire sprinkler system, stamped/sealed and signed by professional fire protection engineer registered in the State of California prior to beginning any work.

D. Product Data

1. Submit four (4) complete sets of descriptive data (manufacturer’s cut sheets) marked-up to show the specific model, type and size of each item proposed. Full descriptive data shall be submitted for all components essential to proper installation, including, but not limited to: sprinklers, pipe, fittings, gate valves, butterfly valves, check valves, backflow devices, hangers, flow switches, tamper switches, materials and other associated equipment.

2. Prepare and submit a minimum of four (4) complete sets of hydraulic calculations.

E. Project Record Documents

1. Contractor shall prepare, on a daily basis, red-lined shop drawings to record as-built conditions.

Submit completed red-line drawings to the Contracting Officer and the AHJ at project completion.

2. Prepare and submit four (4) sets of record shop drawings, product data, and hydraulic calculations reflecting final as-built conditions at completion of project, but before final acceptance of the work. These documents shall be prepared in accordance with the requirements for the initial submittal.

Freehand sketches or mark-up documents are not acceptable. Record drawings shall be on reproducible sepia.

F. Operations and Maintenance Data:

1. Furnish four (4) sets of instruction manuals containing complete operation and maintenance instructions for the specific make and model of check valves, control valves, water flow switches, valve supervisory switches, control panels, and other components supplied. Include maintenance data relative to components of the system, servicing requirements, inspection data, replacement part numbers and availability, and location and numbers of the service depot.

G. Contractor’s Material and Test Certificates

1. Upon completion of required testing the contractor shall submit completed and signed material and test certificates for aboveground, underground piping and backflow prevention devices certifying system meets or exceeds the specified requirements. The Contractor shall use the following National Park

Service forms:

Aboveground Piping Acceptance Test Form (Form AS-5) Underground Piping Acceptance Test Form (Form

AS-4) Backflow Prevention Assembly Test Form (Form BF-1) Fire Pump Acceptance Form (Form FP)

Fire Hydrant Acceptance & Flow Test Form (Form FH-1) Fire Alarm Record of Completion and Acceptance

Form (FA-2)

H. Final Acceptance Test

1. Contractor shall propose procedures for final acceptance test, no later than [14] days prior to the proposed start of the tests. Contractor shall submit final acceptance test procedures at the same time proposed final acceptance test date and time are submitted. Notification shall include a copy of the

Contractor’s Material and Test Certificates.

1.12 DELIVERY, STORAGE AND HANDLING OF MATERIALS

A. Deliver and store valves in shipping containers, with labeling in place.

B. It is the responsibility of the contractor to maintain all parts in a safe, secure place until installation.

C. The storage location must meet the approval of the CO.

D. Provide temporary protective coating on cast iron and steel valves during the storage period.

E. All stored pipe shall be support off the ground at all times.

1.13 GUARANTEE

A. The Contractor, in addition to other warranties or guarantees required by the contract documents, shall guarantee workmanship on all piping, devices, and related materials for a period of one year from the date of the Contracting Officer’s final acceptance of the work. All defects shall be promptly corrected at no cost to the Owner.

B. The Contractor is responsible for providing a system that has been coordinated with the contract documents and approved by the Contracting Officer.

PART 2 – SYSTEM DESIGN

2.1 GENERAL

A. The Contractor shall provide all labor and materials for a complete NFPA 13 compliant fire sprinkler system. All equipment supplied under this specification shall be new and, where required by the

NFPA or this specification, shall be UL-listed or FM-approved for fire protection systems and installed and used as intended by the listing.

B. The Contractor shall design and install a fire protection system and shall connect the system to the existing/new private/public water main in such a way that the shutdown of the facility potable water line will not shutdown the fire sprinkler water supply. Connection to the existing water service shall be made with a dielectric flange union. Provide a double check valve backflow prevention assembly with listed valves.

C. The automatic water control valve shall be provided with hydraulic, pneumatic, or mechanical manual means, as approved by the AHJ, for operation that is independent of detection devices and of the sprinklers.

D. Spacing of detection devices, including automatic sprinklers used as detectors, shall be in accordance with their listing and manufacturer’s specifications, and comply with the minimum requirements of NFPA 72.

E. The release system shall serve all areas that the system protects.

F. Sprinkler System:

1. Contractor shall provide a hydraulically designed automatic fire sprinkler system. The sprinkler system shall provide complete sprinkler coverage of the building.

2. Contractor shall verify the performance limits of the existing water distribution system by performing a water flow test, using the two hydrants that are closest to the facility to be protected. The water flow test shall be performed in accordance with NFPA 291. The results of the water flow test shall be provided to the AHJ for review prior to the completion of sprinkler system design.

3. Upright, pendent, and sidewall sprinkler shall be installed as approved by the AHJ. Recessed dry pendent sprinklers shall be installed in all finished ceiling areas. Dry sidewall sprinklers may be used where authorized and approved by the AHJ.

4. The sprinkler riser main drain and shall be routed to the exterior of the building. Contractor shall provide a splash block or rip-rap below the discharge outlet of all drain outlets to prevent erosion.

5. Sprinkler system design criteria shall be based on this scope of work and the occupancy hazard classification section of NFPA 13.

6. Where more than 20 heads are required a fire department connection is required.

7. Contractor shall provide and install a spare sprinkler box, near the riser, that contains spare sprinkler heads of all head types used in the system; the number of which shall be in accordance with

NFPA, and a sprinkler wrench.

8. Contractor shall install a sprinkler monitoring panel/fire detection and notification system, or connect sprinkler water flow and tamper switches to the existing fire detection and notification panel.

Water flow switch activation shall trigger a fire alarm condition at the fire alarm control panel. Tamper switch activation shall trigger a supervisory alarm condition at the fire alarm control panel.

9. Sprinkler system design shall include materials, accessories, and equipment inside and outside building, to include all fittings, valves, sprinklers, specialty items, and appurtenances required for a complete and operable water-based fire suppression system to provide system complete and ready to use.

10. Paint all interior exposed ferrous metal piping and ferrous metal pipe supports with installed in tenant spaces with one coat primer and two coats of corrosion resistant exterior enamel. Finish paint color shall match surrounding surfaces. Paint color shall be approved by the Contracting Officer.

11. Contractor shall provide NFPA 13 compliant labels and signs for all system control valves and drains.

12. Contractor shall attach an NFPA 13 compliant hydraulic design plate to the system riser.

2.2 UNDERGROUND PIPING

A. Underground pipe shall be UL-listed or FM-approved for fire protection systems.

B. The pressure class of the pipe, joints, fittings, valves and hydrants shall not be less than the maximum working pressure of the system under non-emergency (no-flow) conditions. In no case shall the pressure class be less than 175 pounds per square inch.

C. Ductile iron pipe shall be joined by approved means.

D. Fittings shall be cast iron or ductile iron listed and/or approved for fire main underground installations.

2.3 ABOVE GROUND PIPING SYSTEM

A. Pipe shall be per NFPA 13. Schedule 10 pipe or smaller will not be approved. All steel pipe shall be hot dip galvanized Schedule 40..

B. Fittings shall be cast iron, or malleable iron, or steel conforming to NFPA 13 requirements.

C. Branch lines shall be pitched at least half (½ ) in. per 10 ft and mains shall be pitched at least one-quarter (¼) in. per 10 ft.

D. Where cooper tube is used, as approved by the AHJ, joints for the connection of copper tube shall be brazed.

E. Check Valve: Provide a listed/approved swing-type check valve in the sprinkler system riser assembly prior to any branch lines. A backflow prevention device listed for water-based fire protection systems shall be allowed to act as this check valve, as approved by the AHJ.

2.4 SPRINKLERS

A. The Contractor shall indicate on the contract drawings the type of sprinkler heads for each area if more than one type of sprinklers is to be provided.

B. Sprinklers with internal O-rings will not be allowed...

C. Sprinklers shall be used in accordance with their listed coverage limitations.

D. Temperature classification shall be ordinary or intermediate, as appropriate and approved by the

AHJ.

E. Sprinklers in high heat areas including attic spaces or in close proximity to unit heaters shall have temperature classification in accordance with NFPA 13.

F. Extended coverage sprinklers shall be allowed, as approved by the AHJ.

G. Pendent sprinkler heads shall be of the dry pendent type, and shall be listed for such use.

H. Upright sprinkler shall be brass/chrome-plated/stainless steel/white polyester, quick-response type.

I. Where corrosion resistant sprinkler are required by NFPA 13 (i.e., where chemicals, moisture, or other corrosive vapors sufficient to cause corrosion of such devices exists), or as required by the AHJ, they shall be upright/pendent type installed in appropriate locations, in accordance with NFPA 13, or as required by the AHJ. Corrosion resistant coatings shall be factory-applied by the sprinkler manufacturer.

L. Sprinklers in areas with finished ceilings shall be recessed, unless otherwise instructed by the COR or AHJ.

M. Hangers shall be provided on arm-overs exceeding 12 inches in length.

N. Listed horizontal sidewall sprinklers shall be allowed, as approved by the AHJ, provided they are installed so that water is not trapped behind them and are installed in such a manner as to avoid the accumulation of water, scale, and sediment.

O. Sprinklers in areas without finished ceilings shall be upright, brass, unless otherwise specified.

P. Sprinklers shall be U.L. listed for the intended application.

Q. Sprinklers subject to mechanical damage shall be properly protected with listed guards, in accordance with the requirements of NFPA 13.

R. Sprinklers shall not be painted in the field. The Contractor shall ensure proper protection is provided to prevent the painting of sprinklers by other trades and contractors. Any sprinklers that have been painted shall be replaced by the Contractor with new listed sprinklers of the same characteristics, including orifice size, thermal response, and water distribution.

2.5 SPRINKLER MONITORING AND WATER FLOW ALARMS

A. The alarm system shall consist of alarms actuated independently by a detection system and the flow of water. The detectors and wiring associated with fire alarm system are permitted to be supported by the pipe and hangers of the sprinkler system because they are system components.

B. Valves shall be externally resettable and fitted with an alarm bypass test connection for an electric alarm switch and water motor gong. The alarm bypass test connection shall be made on the water supply side of the system and provided with a control valve and drain for the alarm piping.

C. Where a control valve is installed between the initiating device and the notification appliance, i.e.

a ball valve is installed on the water motor gong or water flow switch piping, and the system is required to be monitored by this scope, NFPA 13 or NFPA 72, the control valve shall also be monitored.

D. A sprinkler pressure (Water flow) alarm switch shall be installed and shall be include a metal housing with a neoprene diaphragm, SPDT snap action switches and a 1/2 inch NPT male pipe thread. The switch shall have a maximum service pressure rating of 175 psi. There shall be two SPDT (Form C) contacts factory adjusted to operate at 4 to 8 psi.

E. Activation of any water flow switch shall cause an audible alarm on premises within 5 minutes of the flow of water across said device and shall continue until the flow of water is terminated.

F. Switches shall be set to signal any flow of water that equals or exceeds the discharge from any one sprinkler within 30-40 seconds. Water flow switch mechanisms shall incorporate an instantly recycling pneumatic adjustable retard element, adjustable up to two minutes.

G. Where sprinkler monitoring panels or fire alarm control panels monitor sprinkler system components the panel shall be capable of transmitting a signal to an approved central/remote station within 90 seconds of water flow or supervisory switch activation.

H. Valve Supervisory Switches: Provide sprinkler control valves with approved circuit supervisory

(tamper) switches. The supervisory signal shall be obtained during the first two revolutions of the hand wheel or operating crank. The switch shall not interfere with the operation of the valve nor obstruct the view of its indicator. Devices shall be compatible with the fire alarm control panel or sprinkler monitoring panel, where existing or proposed, and the requirements of NFPA 72. All switches shall be suitable for installation as end-of-line devices.

2.7 FIRE DEPARTMENT CONNECTION

A. The fire department connection shall be provided.

B. Fire Department Connection: The fire department connection (FDC) shall be a projecting, single port or Siamese (Y-type), with cast brass body, and shall be provided with sign lettered “Automatic

Sprinkler.” The FDC inlet(s) shall have individual self-closing clappers, caps with drip drains and chains.

Female inlets shall have 2½-inch diameter threads compatible with the local fire department. The FDC shall be located on the exterior wall of the facility. The FDC installation shall include a 4-inch swing-type check valve, or as determined by hydraulic calculation. A ball drip assembly shall be provided with the drain piped outdoors.

C. The pipe must be hot dipped galvanized inside and out, and externally coated and wrapped.

2.8 BACKFLOW PREVENTION ASSEMBLY

A. Backflow Preventer: Provide double detector check valve assembly backflow preventer with gate valves. The entire assembly (check valves and gate valves) shall be listed for fire protection systems. Each check valve shall have a drain. Backflow prevention assemblies shall have current "Certificate of Approval” from the Foundation for Cross-Connection Control and Hydraulic Research. Means shall be provided downstream of all backflow prevention valves for flow tests at system demand.

B. All indicating control valves that are a part of the backflow prevention assembly that are also used as the main water supply control valves to the sprinkler system shall be listed for fire protection systems and mechanically or electronically supervised in accordance with the requirement of NFPA 13, 72, 101, the

IBC, RM-58, and this scope of work.

C. Testing, to include forward flow testing, of backflow prevention devices, shall be in accordance with section 3 of this scope of work and the appropriate chapter of NFPA 25.

2.9 VALVES

A. All valve assemblies shall meet or exceed the requirements as outlined by NFPA 13.

B. Provide valves as required by NFPA 13 and of types approved for fire service. Sprinkler control valves shall open by counterclockwise rotation and be OS&Y or butterfly type. Valves 2 inches and smaller shall be bronze. Valves 2½ inches and larger shall be iron bodies, bronze mounted.

D. Gate Valves

1. Up to and including 2 inches: Bronze body, bronze trim, rising stem, hand wheel, inside screw, single wedge or disc.

2. Over 2 inches: Iron body, bronze trim, rising stem, hand wheel, OS&Y, single wedge, resilient-seated.

E. Globe Valves

1. Up to and including 2 inches: Bronze body, bronze trim, rising stem and hand wheel, inside screw.

2. Over 2 inches: Iron body, bronze trim, rising stem, hand wheel, OS&Y, plug type disc, renewable seat and disc.

F. Ball Valves

1. Up to and including 2 inches: Bronze one-piece body, stainless steel ball, Teflon seats and stuffing box ring, lever handle and balancing stops. Over 2 inches: Cast steel body; chrome plated steel ball, Teflon seat and stuffing box seals, lever handle, flanged.

G. Butterfly Valves

1. Bronze body, stainless steel disc, and resilient replaceable seat, threaded ends, extended neck, hand wheel and gear drive and integral indicating device, and built in tamper proof switch for signal transmission to the fire alarm system.

2. Cast or ductile iron body, chrome plated ductile iron disc, resilient replaceable EPDM seat, extended neck, hand wheel and gear drive and integral indicating device and built-in tamper proof switch for signal transmission to the fire alarm system.

H. Underground Valves

1. All valves controlling connections to water supplies and to supply pipes to sprinklers shall be listed indicating valves. Such valves shall not close in less than 5 seconds when operated at maximum possible speed from fully open position.

2. A non-indicating valve such as an underground gate valve with approved roadway box, complete with T-wrench shall be permitted.

3. Post Indicating Valve (PIV) shall be permitted.

I. Check Valve:

1. Provide a listed/approved swing-type check valve in the sprinkler system riser assembly prior to any branch lines. A backflow prevention device listed for water-based fire protection systems shall be allowed, as approved by the AHJ.

2.10 DRAINAGE

1. Provide main drain piping to discharge outside the building to a point approved by the AHJ.

2. All piping shall be arranged where practicable to drain to the main drain valve.

3. Branch lines shall be pitched at least half (½ ) in. per 10 ft and mains shall be pitched at least one-quarter (¼) in. per 10 ft.

4. Provide auxiliary drains as required by NFPA 13.

5. Auxiliary drain controls shall be of the Metraflex NeverTrip™ valve assembly, or approved equal.

6. Where the capacity of trapped sections of pipe is less than 5 gal, the auxiliary drain shall consist of a valve not smaller than one-half (½) in.

7. Where the capacity of isolated trapped sections of system piping is more than 5 gal, the auxiliary drain shall consist of two 1-in. valves and one 2-in. × 12-in. condensate nipple or equivalent, and accessibly located.

8. Auxiliary drains shall not be used on pipe drops supplying dry-pendent sprinklers.

9. Provide tie-in drains for multiple adjacent trapped branch pipes, a minimum of 1 inch in diameter.

Pitch tie-in drain lines a minimum of 1/2 inch per 10 feet.

2.12 INSPECTOR’S TEST CONNECTION

A. Provide test connection(s) approximately 6 feet above the floor. Provide test connection piping to a location where the discharge will be readily visible or provide a test connection with sight glass assembly. The test piping shall discharge to exterior grade and onto a splash block so as to prevent damage to the structure or landscape.

B. System, main drain or sectional drains, connections piping shall be routed to a location where the discharge will be readily visible. The test piping shall discharge to exterior grade and onto a splash block so as to prevent damage to the structure or landscape.

2.13 PIPE HANGERS AND SUPPORT

A. Pipe hangers, braces and supports shall be in accordance with NFPA 13.

B. Hangers for support of piping and equipment shall be types approved for fire protection service.

Supports including all threaded rods shall not interfere with access to operating areas, obstruct electrical junction boxes, or impact the reliability and operations of facility equipment and systems. In areas subject to earthquakes additional seismic bracing will be required on all hangers and installed according to NFPA

13 and the IBC.

2.14 PIPE SLEEVES

A. Systems requiring galvanized pipe: For sleeves in masonry and concrete walls, floors and roofs provide, Schedule 40 or standard weight, hot-dip galvanized steel pipe sleeves.

B. Systems requiring galvanized pipe: For sleeves in partitions, and other than masonry and concrete walls, floors and roofs provide hot-dip galvanized steel sheet having a nominal weight of not less than

0.90 pounds per square foot.

2.15 PIPE ESCUTCHEON PLATES

A. Provide approved one piece or split hinge type metal plates for piping passing through floors, walls, and ceilings in exposed areas. Provide chromium-painted finish, or white painted finish escutcheon plates, as approved by the AHJ, in finished areas. Securely anchor plates in place with set screws or other approved means.

PART 3 - EXECUTION

3.1 PREPARATION

A. Coordinate work of this section with the COR or his/her designee.

B. The Contractor shall take any necessary measures to prevent damage to the facilities and equipment, and shall take any necessary measures to prevent accidental water discharge at all times. All collateral damage resulting from the work and testing under this section, whether intentional or not, shall be repaired by the Contractor at no cost to the government.

C. At any time “Hotwork” is being performed by the contractor a valid NPS Hot Work permit shall be on site.

D. At any time an existing fire protection system is disabled by the contractor the contractor is responsible for notifying COR and the building occupants, and for establishing a fire watch until the fire protection system is restored to normal conditions. Under no circumstances shall a fire protection system be let out of service overnight.

E. The Contractor is responsible for the safe work place environment for their employees and contractors. The contractor shall comply with the OSHA standards.

F. Ream pipe and tube ends to remove all burrs.

G. All excess oil, dirt, pipe joint compound, rust, and mill scale shall be removed from piping and equipment. All dirt, debris and excess cutting oil shall be removed from the interior of all piping and equipment before it is erected.

H. Cap off open newly installed pipe at the end of each work day to prevent insects, rodents or other potential obstructions from entering the pipe.

I. Storage of equipment, tools, and materials is the sole responsibility of the Contractor.

Arrangements shall be made with the COR prior to work.

J. Storage of material shall be stacked in an orderly fashion and meet the satisfaction of the COR. The storage shall be safeguarded to prevent accidents from occurring around the stored material.

K. Piping shall be inspected by, tested in the presence of, and approved by the AHJ or his designee before covering, or concealing. Provide fittings for changes in direction of piping and for all connections.

Make changes in pipe sizes through tapered reducing pipe fittings; the use of bushings will not be permitted. This should be Part 3 Execution.

L. Welding shall be performed in the shop; field welding will not be permitted.

M. Where possible and as approved by this the COR, the Contractor shall conceal piping, fittings, fixtures, hangers and supports in areas with suspended ceilings and finished areas.

N. Piping joined by threaded methods shall be Schedule 40 for sizes less than 8-inch pipe.

O. Pipe shall be joined by threaded or cut grooved, welded or flanged methods.

3.2 INSTALLATION

A. All work shall be installed in a professional manner (parallel/perpendicular to walls and columns) in accordance with NFPA and NPS standards and other applicable standards referenced by this document. All piping in areas with finished ceilings shall be concealed, unless otherwise approved by the COR.

B. Install all equipment in accordance with manufacturer’s instructions.

C. Use proper lubricant on ends of piping or gaskets where required by pipe fitting or coupling manufacturer. The manufacturer’s recommended lubricant shall be used.

D. Where required by manufacturer, properly torque bolts to manufacturer’s specifications using a torque wrench.

E. Prevent electrolysis by insulating connection between pipe, fittings, hangers or dissimilar metal against direct contact. Use dielectric insulating flanges and units.

F. Support all sprinkler piping, risers, etc., as specified in NFPA 13 and 24. Provide riser clamps above floor at each floor penetration.

G. Provide minimum 1¼-inch diameter, 4-inch long nipples and caps at ends of all cross mains for flushing connections.

H. Sprinkler installation shall be coordinated with the installed mechanical and electrical work and the ceiling grid/layout. Where sprinklers are to be installed on modular ceiling panels, sprinklers shall be located as close to the center of the ceiling panel in both directions as possible. The Contractor shall furnish additional sprinklers, which may be required for coordinated ceiling pattern without additional cost to the NPS, even though number of sprinklers may exceed minimum code requirements.

I. The Contractor shall install the piping and equipment in accordance with approved shop drawings.

Main and Auxiliary Drains:

1. Each system shall be furnished with a main drain, which is capable of draining the majority of the system to outside grade. Drainage to floor or sink is not permitted.

2. Auxiliary drains shall be provided to drain any sections of piping that trap water or are not capable of being drained by the main drain in accordance with NFPA 13. Auxiliary drains shall discharge as required by NFPA 13 and the AHJ.

3. All drains terminating outside shall be piped to within 8 inches of finished grade. Concrete splash guards shall be provided at grade level beneath all outside drains. Drainage shall not create damage to the facility or surrounding landscape.

K. The Contractor shall install seismic bracing in accordance with NFPA 13.

L. The Contractor shall install proper UL-listed fire stopping materials as required for any penetrations through fire rated construction.

M. Tapping or drilling of load-bearing structural members is not permitted. Attachments may be made to steel or concrete structures with approved clamps and hangers designed in accordance with

NFPA 13 and local standards.

N. Provide pipe sleeves where piping passes through walls, floors, roofs, and partitions. Grout sleeves in proper position and location during construction. Provide sleeves of sufficient length to pass through entire thickness of walls, floors, roofs, and partitions. Provide clearance between exterior of piping and interior of sleeve in accordance with NFPA 13. Firmly pack space with noncombustible insulation and caulk at both ends of the sleeve with plastic waterproof cement, which will dry to a firm but pliable mass, or provide a flexible seal. Extend sleeves in floor slabs 3 inches above the finished floor.

O. Install valves with stems upright or horizontal as required. Valve stems shall not be inverted.

P. Provisions shall be made by the Contractor to protect piping, sprinklers and other components of the sprinkler systems from extreme climatic conditions including freezing and high temperature (under

40° F, or over 100° F).

Q. Install exposed piping so as not diminish exit access widths, corridors, or equipment access. Install exposed horizontal piping, including drain piping to provide maximum headroom.

R. All control…