“Meet the DBI Pros” Summit October 12, 2007WELCOME TO THE AUTOMATIC SPRINKLER „SUMMIT‟ PRESENTED BY THE SAN FRANCISCO FIRE DEPARTMENT “MEET THE DBI PROS” THE SAN FRANCISCO FIRE DEPARTMENT PRESENTS NFPA 13-Installation of Sprinkler Systems: Transition from 1999 to 2002 Editions By: Gerald Zari and Jon Corbett Reorganization of the NFPA 13 Standard: • NFPA 13, 2002 Complies with the NFPA Manual of Style: – First Chapter is “Administration” – Second Chapter is “Reference Publications” (previously Chapter 13) – Third Chapter is “Definitions” – Changes/additions indicated with a vertical bar fittings and Materials used – Retroactivity Clause: The AHJ can apply this standard to existing systems where there is an “unacceptable degree of risk” – Equivalency: Allows the AHJ to accept alternate approaches. fittings. etc…within their listings . based on engineering judgment. sprinklers.The “Administration” Chapter provides general guidance for the following aspects of Sprinkler Systems: – Scope: Minimal design & installation of systems. – Purpose: Reasonable degree of protection – Application: Water Supplies. piping. that meets the intent of the standard – New Technology: Accepts the use of newly developed sprinkler. and Sloped – Materials: Non-Combustible and Limited Combustible.Referenced Publications: – Updated to the most current. consistent with NFPA 220 . applicable Standards – Directs user to other standards for design of sprinkler systems not addressed in NFPA 13 New Definitions: – Bathrooms in Dwelling units – Ceilings: Flat. Horizontal. materials within and storage heights Provides a preliminary building plan for design of the sprinkler system If applicable.3) • A new form with information provided by the • Owner or an Authorized Agent States intended use of building. special information about the water supply and Microbiologically influenced corrosion (MIC) SFFD may require this form on the approved plans • • • .Chapter 4: Owners Certificate (4. 1.1.1) – Installation must conform to all conditions required by the listing. this information is found in the product literature and installation instructions – Examples: WS sprinklers.Chapter 6 (1999 Chpt. extended coverage.3): System Components and Hardware • Specially listed products (6. flex heads and residential sprinklers . Chapter 7 (1999 Chpt. both sides • Freezing conditions: areas where Temperatures are below 40 degrees Fahrenheit .e.4): System requirements • Gauges are now required above and below check valves in a Riser. i. 3.g. e.3) – Per 8. all sprinklers in that room/compartment are required to be QR ordinary temperature-rated (135-170 0F) – The exception is a circumstance that requires a higher temperature sprinkler. then use of Standard sprinklers is permitted – Does NOT apply to Residential Sprinklers .3.5): Installation Requirements • Sprinkler thermal sensitivity (8.3.3.Chapter 8 (1999 Chpt. where Quick Response (QR) sprinklers are installed. a heat source like a Fire Place Stove or skylight. 2.Chapter 8.4.7.4. continued: • Sidewall Spray Sprinklers (8.2): – Light Hazard: Allows installation of sidewall sprinklers in smooth.2): • In sloped ceilings: locate sprinkler in highest point of slope with deflector parallel to slope – Definitions: • Smooth Ceiling: a continuous ceiling free of significant irregularities • Horizontal Ceiling: 2:12 slope or less (10o) • Sloped Ceiling: Greater than a 2:12 slope (>10o) . horizontal or sloped ceilings – Deflector Orientation (8. continued: 1.7): – Omission of Sprinklers allowed in openings if: Chapter 8.• Skylights and Similar (Small) Ceiling Pockets (8. Opening does not exceed 32 ft2 AND 2.5. Edges of openings are horizontally separated by 10feet or more to other openings Max 32 ft2 8’-0 Example: 4’-0 10 feet or more 2’-0 Max 32 ft2 16’-0 . 7) – Sprinklers required except where ALL of the conditions listed below are met: 1. Volume (cubic feet) is 1000 ft3 or less 2. Skylights allowed to be plastic if 32 ft2 or less 7. Adjacent openings are horizontally located 10-feet or more away from any other pockets 5. Quick Response sprinklers are used in the room .Chapter 8. Maximum of 36-inch deep 3. Entire floor area below has sprinkler coverage 4. Construction is limited/non-combustible 6. continued: • Ceiling Pockets (8.6. Bracing .Chapter 9 (1999 Chpt. and Restraint of System Piping • Fasteners in Concrete (9.6): Hangers.1.3) – Installed in the Horizontal position unless one of the following conditions is met: • Used in concrete with gravel/crushed stone for supporting up to 4-inch pipe • Alternated with hangers connected to structural members or sides of concrete beams for 5-inch or larger pipe • Spacing is 10-feet or less for 4-inch and larger pipe . continued.3 and 9.2): – Steel Pipe requires a hanger and vertical restraint within 12-inches of the BL and armover end – Copper Tube requires a hanger and vertical restraint within 6-inches of the BL and armover end . • Unsupported Ends of Branch Lines (BL) and Armovers with static/flow pressures exceeding 100 psi (9.3.3.Chapter 9.2.4.5.2. 3. – 4-way braces not required where riser penetrates intermediate floors of a multistory building where clearances required by 9.5.5) – 4-way braces required for risers more than 3feet in length.4 are not exceeded. • Risers (9.Chapter 9. Continued. .3. A QUICK COMPARISON OF NFPA 13. 13R. AND 13D STANDARDS . ft. CLOTHES/LINEN CLOSETS/PANTRIES (nonhotel/motel) 24 sq. ft.QUICK COMPARISON OF NFPA 13.1 & 2 FAMILY DWELLINGS X X X X X X EXTRA STORY MORE AREA CLOSETS:* 2007 CBC TBL 503 2007 CBC TBL 503 X X NOT ALLOWED NOT ALLOWED NOT ALLOWED NOT ALLOWED HOTEL/MOTEL CLOSETS 24 sq. AND 13D STANDARDS REQUIREMENT NFPA 13 NFPA 13R NFPA 13D SPRINKLERS THRU-OUT ALL AREAS/ALL OCCUP. SPRINKLERS IN ‘R’ OCCUPANCIES UP TO 4 STORIES SPRINKLERS IN ‘R-3’. or less BATHROOMS greater than 55 sq. ft. or less CLOTHES/LINEN CLOSETS/PANTRIES (nonhotel/motel) Greater than 24 sq. BATHROOMS:** BATHROOMS 55 sq. ft. or less N/A HOTEL/MOTEL CLOSETS greater than 24 sq. X X X X N/A X X X X X . ft. 13R. ft. Sprinkler) RES. ft. (listed sprinkler flow) MINIMUM OPERATING PRSS. ft. USE QUICK RESP. RES. SPRKLRS/ CALC. ADD 100 GPM HOSE ALLOWANCE MUST USE LISTED RESIDENTIAL SPRINKLERS MINIMUM DENSITY 0. NO HOSE ALLOWANCE REQUIRED (must include domestic use) RES. USE RES. OCC. OCC.DESIGN: NFPA 13 NFPA 13R NFPA 13D RESIDENTIAL @ 0. 4 HEADS RES. 2 HEADS & 1HEAD CALC.1 gpm. X X X X X X X X . OCC. ft. res. 1500 sq.05GPM/sq. (or listed flow >0. SPRKLRS/ CALC. OCC.1GPM/sq. OF 7 PSI X X X X X X X QR or RES./ CALC. USE RES. MISCELLANEOUS AREAS: NFPA 13 NFPA 13R NFPA 13D GARAGES (requires 250gpmhosedemand) ATTICS/CRAWL SPACES/CONCEALED SPACES-NOT INTENDED FOR STORAGE OR LIVING PURPOSES X X Refer to NFPA 13 Refer to NFPA 13 *The least dimension not exceeding 3‟. **The walls and ceilings must be non or limited-combustible construction. . F. in area.C. When approved by the Fire Department. ft.2. Exception 3. Two additional exceptions for the requirement for FDC's are found in the 2001C. section 904.A.P.000 sq.B. Buildings located in remote areas that are inaccessible for fire department support.C. Exception 2. as it left the decision up to the Authority Having Jurisdiction. . Large-capacity deluge systems exceeding the pumping capacity of the fire department.A. This was allowed by N. Single-story buildings not exceeding 2. The second exception applies to Group I Occupancies housed in existing single family dwellings under certain conditions (see 2001 C. However. the FDC may be omitted in these systems.P. . It is the Fire Department's position that an FDC will be required except in the instances outlined above. due to Standard changes. exception 4). • • • • • .4. 13.F. the 2002 edition of N. 13 (8.2. it was the Fire Department's position to allow the omission of a Fire Department Connection in buildings with fewer than 20 sprinkler heads per floor. Section 904. The first pertains to combination domestic/fire services.B.16.02 Fire Department Connection Omission • In the past.1.2) no longer allows the omission of an FDC except in the following circumstances: Exception 1. 04 Color Coding of Existing Standpipes • Reference: 2007C.B. such markings shall be located on the wall directly behind the standpipe outlet. Color code markers shall be of a permanent material at least one inch wide surrounding the flange of the standpipe inlet. canary yellow. the pipe directly above the outlet handle shall be marked with a color band at least one inch wide which is the same color as installed at the inlet which supplies such outlet. fire engine red.2 • It is the Bureau of Fire Prevention's policy that all standpipe systems with multiple risers be interconnected at their base.C. .4. If the standpipe is enclosed by construction. Section 905.4. However. existing systems that were approved and installed without such interconnection may have their use continued if such standpipe system is provided with an approved color code. • If the standpipe is exposed. All outlets supplied by this inlet shall be equipped with similar marking. royal blue. This marking may be a 3 inch color disk or 3 inch square area and shall be the same color as the inlet which supplies such outlet. • The Bureau of Fire Prevention will accept five colors which must be florescent: hospital white. and bright orange. 4. 2003 NFPA 14 Section 12.C. Section 912.F. The use of cast iron caps which are not threaded shall not be used. 2. Hose connections for standpipes shall be • equipped with an approved plastic or metal plug which may be removed and reused.9 • THE SAN FRANCISCO FIRE DEPARTMENT'S REQUIREMENTS FOR THE PROTECTION OF STANDPIPE INLET THREADS ARE: • 1. .05 Protection of Standpipe Inlets • Reference: 2007C. 6.06 Design Criteria for Fire Department Connections and Standpipe Outlet Valves • Reference: 2003 N. 14 • Fire Department connections shall be located not less than 18 inches • Each standpipe shall be equipped with approved outlet valves which discharge horizontally.3.4. National Standard hose threads.P. NFPA 14 sec. 7.1 nor more than 48 inches above the level of the adjoining ground (NFPA 14 sec. All measurements are to be taken from the finished surface to the handle or outlet interfere with the use of the outlet valve.) It shall be placed to provide a minimum clearance of six inches on all sides of the handle and 12 inches on all sides of the threaded outlet. They shall be located not less than three feet nor more than five feet above the floor.6).3. • Connections and outlets shall be placed so that doors or walls do not • Fire Department connections and outlet valves shall have "3" inch .A.F. • The recommended height is 42 inches from the finished floor to the center line of the valve. the 30 inch depth of cover is required to protect the pipe from mechanical damage. 2.08 Design Criteria for Installation of Underground Piping for Fire Sprinkler Service Reference: 2007 C.A. Sec. The San Francisco Water Department supplies domestic water meters for all fire services of two-inch and smaller.F.C. all twoinch and smaller fire services. 903 NFPA 24.1 which requires a minimum depth of cover of 12 inches below finished grade. including combination fire/domestic services.4. 2002 edition. Exception: Pipe and joints that have been coated and wrapped do not have to comply with requirement number 3.B. Where frost is not a factor. Due to the practical difficulty of compliance with this standard. including combination services.4. section 10.3. 3. All installation of piping shall comply with San Francisco Plumbing Code section 609. A minimum of three inches of earth shall be maintained between the pipe and concrete. 24. These meters require that the pipe be installed less than the 30 inches required by N. requires that the depth of cover for fire service main pipe be not less than 30 inches or one foot below the frost line for the locality. A minimum four inches of concrete shall cover the area above the pipe.P. The four inch concrete installation shall extend a minimum of 12 inches horizontally on both sides of the pipe. shall be allowed to be installed following the criteria listed below which will prevent mechanical damage: 1. . . In order to speed the permit process.C.4.8 of the 2007 C. • Buildings not subject to the ordinance will continue to require written Fire Marshal approval in order to remove any fire appliance. These written requests will be considered on a case-by-case basis. requires written Fire Marshal approval in order to remove existing fire appliances. buildings subject to the San Francisco High-rise Sprinkler Ordinance will be permitted to remove Class II Standpipe hose cabinets on individual floors after they have been fully sprinklered.09 Removal of Class II Standpipe Hose Cabinets in Sprinkler-Retrofitted Buildings Section 901.F. The applicant shall state his or her intention to remove the hose cabinets on the approved sprinkler plans. 10 Testing of Fixed Extinguishing Systems (Standpipes and PRV's) • Reference: C.A. Sections 904.2(i) and (j) permit the local Fire Department to require notification prior to any service inspection and also to be sent a report of the results. Chapter 5 • Title 19. California 94107 • • • . California Administrative Code .4. a report of the results of any service inspection shall be forwarded to the San Francisco Fire Department at: San Francisco Fire Department Bureau of Fire Prevention 698 Second Street San Francisco. includes regulations for Automatic Extinguishing Systems. The San Francisco Fire Department shall be notified at least twenty-four (24) hours prior to any servicing of a system. Title 19. Also. Chapter 5 contains the criteria and time frames for maintenance and service inspections for all fixed automatic extinguishing systems.C. p.m. Maximum static pressure must not exceed 150 psi. and 75-100 psi residual pressure when flowing 500 g. outlet residual pressure flowing 500 g.4(c)(3) and (d)(3)-Service Regulations for Class III and • • • • • Combined Standpipe Hose Outlets state that "Each Hose Valve Outlet shall be inspected in a manner that will indicate the valves are fully operable." The primary function of a PRV type hose outlet is to reduce pressures under both flow and no-flow conditions.4.p.continued • Pressure Reducing Valves-Certification Of • Section 904. reduced static pressure. valve pressure setting. from the roof manifold of the hydraulically remote standpipe and 250 g. PRV hose valves shall be certified as per the design criteria at the time of their installation. The following test results and information shall be submitted to the Fire Department for review: valve type or model.p.10 Testing of Fixed Extinguishing Systems (Standpipes and PRV's) .m. All PRV type hose outlets shall be flow tested for certification. .m. The only way this pressure reducing feature can be tested and certified as operational is to flow test the valve. for the first standpipe and 250 for each additional standpipe with the pump running at its rated capacity.m. Hose valve design criteria for new installations require outlet pressures of 100 to 125 psi residual pressure flowing 250 g. for each additional standpipe. All test results will be reviewed by the San Francisco Fire Department.p. As required by NFPA 20. . air pockets in the fire pump suction piping is not allowed.4 • Design of the fire pump suction pipe must be approved by the Fire Department.4. the location of the fire pump will also be reviewed and approved by the Fire Department before the Site Permit is approved and issued. • For new building installations. Providing an automatic release valve for the air pockets instead of avoiding air pockets is not acceptable. For this reason. the Fire Department will review these installations on a case-by-casebasis. If it is impossible to do so.20 Design of Fire Pump Suction Piping and Fire Pump Location • Reference: NFPA 20-2003. Section 5. design of the fire pump suction piping must avoid air pockets. fire pump suction piping from the city main and fire water storage tank to the fire pump suction flange shall be designed and installed to avoid air pockets.2. • For existing buildings. NFPA 13R-2002 A. and the Fire Department.2. For three or more dwelling units.3. 13R and/or 13 as required by the C. the Department of Building Inspection. intermittent delivery rate.1.B.B. .C.5.• 4. The following guidelines will be used to comply with this policy: SPRINKLER SYSTEM DESIGN CRITERIA Sprinkler systems supplied by the combination fire service must be hydraulically designed in accordance with NFPA 13D. Domestic water demand shall be at least 5 gpm per unit for two dwelling units or less. Combination fire service will be permitted only when the combined sprinkler system and domestic water demand through the meter will not exceed the manufacturers' listed maximum. . The domestic water demand must be included in the sprinkler flow at the domestic water system point of connection to the combination fire service line. NFPA 13• • • • 2002. – The maximum delivery rates for combination fire service are: 1 inch service = 50 gpm 1 1/2-inch service = 100 gpm 2 inch service = 160 gpm . Sections 903. the domestic demand shall be as estimated using the Tables in NFPA 13R.C.23 Combination Fire Services • Reference: 2007C. the service line must be copper (Type K with brazed joints) from the meter to the sprinkler connection to minimize problems of tuberculation. . Combination Fire Service Pipe – For all sizes.The meter friction losses to be used in the hydraulic calculations are: Service size\flow 1 inch 1.5 inch 2 inch 25 gpm 50 gpm 75 gpm 100 gpm 150 gpm 160 gpm 5 psi 1 psi 1 psi 9 psi 3 psi 1 psi 7 psi 3 psi 12 psi 5 psi 8 psi 12 psi – B. – FDC locations to be approved by Fire Department. .• 4. – 4) Deemed necessary for any other reason by the Fire Department.24 FDC Requirement for Low-Rise Buildings • Reference: NFPA 13 NFPA 14 • The San Francisco Fire Department may require more than one FDC in a low-rise building when: • 1) The building fronts on more than one public way. • 2) It has significant floor area where firefighter response to the seat of the fire may be delayed. • 3) The adjacent streets or public way characteristics may hinder firefighting operations. Alarm. Sec. 903. All buildings with a R-1 (hotels) and R-2 (apartments) fire area must be sprinklered throughout. and trouble signals…… and automatically transmitted to an approved central station. Sec.7 • 2.Some 2007 CBC new requirements: • 1.2.4. supervisory.1 . 903. 903.4 • 3. remote supervising or proprietary supervising station as defined in NFPA 72. All valves controlling the water supply for automatic sprinkler system must be electrically supervised. Sec. • 4.1 . Sec.2. All Group „A‟ occupancies shall be sprinklered throughout and all the floors between the „A‟ occupancy and the level of exit discharge. 903.4 • 5. Systems with 20 or more sprinklers must be supervised and monitored by a central station or equivalent. Sec. 903. • ASCE Sec. by a Calif. Occupancy Category values determined by a California registered Engineer. „E‟. Registered Engineer • The SFFD will issue an Administrative Bulletin concerning the specific submittal requirements for Fire Sprinkler Seismic Bracing .8.1 • Design of sprinkler supports and attachments shall be in accordance with ASCE-7 (American Society of Civil Engineers).3 Hangers and Bracing designed in accordance with NFPA 13 Design strength.2 and 13.3 Seismic design requirements based on Occupancy Category Occupancy Category „C‟ is based on NFPA 13-2007 Occupancy Category „D‟.8. • Some exceptions are allowed based on specific criteria. 1613. • ASCE Sec.8. • Categories D to F: ASCE Section 13.6.6.6. Force and Displacement calcs.SEISMIC BRACING REQUIREMENTSCBC 2007 and NFPA 13-2007 CBC Sec. and „F‟ are required to comply with ASCE 7 • Most buildings in San Francisco appear to fall into the D to F Occupancy Categories.4 Seismic Ground Motion Values (SDS or SD1). 11. 13. • We value you and your opinion • We want you to feel that we’re Thank you for attending! here to help assist you • Our goal is to improve the value of our services to better serve you • We’ve been listening to you telling us what’s important • New improvements are on the horizon • Please fill out evaluation form .
Report "NFPA 13 Installation of Sprinkler Systems"