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(SIGNED)BEAVERBROOK_06-02-2017_NARRATIVEBeaver Brook Estates – 29 Beaver Brook Estates Northampton, MA Legacy Fire Protection, Inc 592 CENTER STREET P.O. BOX 582 LUDLOW, MA 01056 Tel. (413) 589-0672 June 2nd, 2017 Fire Prevention Officer Northampton Fire Department 26 Carlton Drive Northampton, MA 01060 Subject: Beaver Brook Estates 29 Beaver Brook Estates Northampton, MA 01060 This letter will serve as confirmation that we have taken into consideration 780 CMR: Massachusetts Amendments to the International Building Code (IBC) 2009, Chapter 9 “Fire Protection Systems” with regard to the design of the automatic fire protection system and compliance with applicable codes at the above referenced location. Re: 780 CMR 901.2.1 Tier One, Construction Documents (a) System Description (i) Basis (Methodology) of Design Section 1 – Building Description a. Building “Use” Group – “R2” Residential b. Total Square Footage – Approximately 2500 sq. ft. c. Square Footage per floor – Approximately 830 sq. ft. d. Building height-above mean grade – Approximately 25 ft. e. Number of floors above grade – 2 f. Number of floors below grade – 1 g. Type of occupancies within the building – Residential h. Type(s) of construction – V – Wood construction with wood floor joists and beams i. Liquids and Hazardous material usage and storage – N/A j. High storage of commodities over 12 feet – N/A k. Site access for emergency vehicles – Emergency vehicles have access from Evergreen Road Section 2 – Applicable Laws, Regulations and Standards Scope of project includes installation of a wet pipe automatic sprinkler in accordance with the requirements of NFPA-13D 2013 Edition, 2009 IBC, and 780 CMR 8th Edition. The building will have a fully functioning wet Automatic Sprinkler System. A Fire Protective Signaling System is to be provided. The Automatic Sprinkler System and Fire Protective Signaling System shall Beaver Brook Estates – 29 Beaver Brook Estates Northampton, MA  Page 2 June 2nd, 2017 be installed and operational in accordance with all applicable State, Local and National Codes, as follows: a. International Building Code (IBC) 2009 b. International Existing Building Code (IEBC) 2009 c. International Fire Code (IFC) 2009 d. 780 CMR, Massachusetts Amendments to the International Building Code (IBC) 2009. e. 527 CMR, Fire Prevention Regulations f. 527 CMR 1.00 Administration and Enforcement g. 527 CMR 10.00 Fire Prevention general provisions h. 527 CMR 12.00 2008 Massachusetts electrical code amendments i. 527 CMR 24.00 Fire warning systems installed in buildings within the Commonwealth of Massachusetts j. NFPA-72, 2010 Edition, “National Fire Alarm Code” k. M.G.L. Chapter 141, Section 1 through 10 (Supervision of Electricians) l. M.G.L. Chapter 148, Section 10 (Regulations relative to fire prevention) m. M.G.L. Chapter 148, Section 28 (Regulations to prevent fire hazards and fires) n. M.G.L. Chapter 146, Section 81 through 89 and CMR 528, Section 11 and 12, (Sprinkler Contractor and Fitters Licensing Laws and Regulations). o. NFPA-13D, 2013 Edition, “Standard for the Installation of Sprinkler Systems” p. NFPA-25, 2008 Edition, “Standard for the Inspection Testing and Maintenance of Water Based Fire Protection Systems” q. NFPA-70, 2008 Edition (NEC) r. IRC 2009 Edition Section 3 – Design Responsibility for Fire Protection Systems a. Design-build. The installing contractor completely designs and specifies (develops a full system layout, design criteria and calculations) under the supervision of a professional engineer (PE) and installs the system. The PE is considered the engineer of record and certifies the system installation for code compliance at completion. Section 4 – Features used in design methodology a. Building occupant notification and evacuation procedures - Approved Audio/visual alarm devices connected to the sprinkler system, activated by water flow located on the interior of the building and throughout the building in accordance with the requirements of 780 CMR 907. (By Others) b. Emergency response personnel, site and system features – Fire protection water is from an new incoming city feed located in the basement of the unit. A municipal hydrant is located on Beaver Brook Drive Sizing will be determined after hydraulic calculations have been performed. c. Safeguards, fire prevention and emergency procedures during construction – n/a d. Method for future testing and maintenance of systems and documentation – Per the requirements of NFPA-25. Section 5 – Special Consideration and Description N/A (ii) Sequence of Operation Section 1 a. Fire protection water will be supplied from the incoming service in the basement. “Wet System” - Thermally sensitive automatic sprinklers connected to a fixed fire protection piping system filled with pressurized water from the incoming service used in detecting a fire. Beaver Brook Estates – 29 Beaver Brook Estates Northampton, MA  Page 3 June 2nd, 2017 When a fire occurs, the heat produced will fuse and operate sprinklers over the affected area distributing water to control or extinguish the fire. As water flows through the system, a paddle type water flow alarm device is activated which in turn initiates the Fire Protective Signaling system. b. The operating sequence for the fire alarm system is as follows: (By Others) c. All control, drain and test connections shall be provided with signage indicating their purpose. (iii) Testing Criteria Section 1 a. The Fire Sprinkler installing Contractor will be in charge of setting up and coordinating all testing. b. The Fire Sprinkler installing Contractor will utilize telephone and e-mail to coordinate all contractors, equipment distributors and code officials required to perform and witness all testing, testing dates and times, fortification to public utilities personnel required to perform all required testing as a system or individual system component testing. c. All piping shall be hydrostatically tested per the requirements of NFPA-13D utilizing a hydrostatic test pump. d. All control valves shall be fully closed and opened under system water pressure to ensure proper operation. e. Supervisory tamper switches shall be tested for proper operation by closing the control valve and verifying signal at fire alarm control panel. f. A main drain test shall be performed per the requirements of NFPA-13D by observing and recording the supply pressure gauge reading and then opening the main drain fully and again observing and recording the supply pressure gauge reading. g. The water flow detecting device and associated alarm circuits shall be flow tested by opening the inspectors test connection, and shall result in an audible alarm on the premises and activation of the Fire Protective Signaling System within 60 seconds. Section 2- Equipment and Tools a. Fire Sprinkler Installing Contractors will utilize the following to verify system performance: 1. Manufacturer’s instructions and recommendations 2. Specifier’s special instructions 3. Approved narrative report, sequence of operation section 4. Approved fire sprinkler drawings 5. Communications radios 6. Notification announcements Section 3 – Approval Requirements a. Written approval by the Northampton Fire Department that the system satisfies all operational code compliance requirements will be required. b. When a portion of the system fails to operate satisfactorily, that portion shall be corrected and pre-tested prior to rescheduling the final acceptance test. c. Properly executed Material, Test, Performance and Completion Certificates will be provided to the Fire Chief or his designee by the Fire Alarm Contractor at the completion of final acceptance. d. Confirmation by the Building Owner shall be provided to the Northampton Fire Department that as-built drawings sealed as reviewed by the Engineer of Record have been received prior to witness of acceptance testing. Beaver Brook Estates – 29 Beaver Brook Estates Northampton, MA  Page 4 June 2nd, 2017 e. At the completion of installation, the Engineer of Record (PE) shall provide a final written report that the specific fire protection system(s) for which he has design responsibility has been reviewed for proper functional operation and applicable code installation conformance. (1b) Building and site access for fire-fighting and/or rescue vehicle(s) and personnel – The building is accessible on one side. (1c) Fire hydrant(s) location and water supply information – Fire protection water is supplied from The incoming service in the basement. A municipal hydrant is located on Beaver Brook Drive. Hydraulic calculations have been based on hydrant flow test data of: Static 45PSI, Residual 10 PSI, Flow 380 GPM. Results of the test indicate that the water supply will support the proposed system design. (1d) Type/description and design layout of the automatic sprinkler system – 1. The “Wet Sprinkler System” will have one zone, designed in accordance with the requirements of NFPA-13D. 2. A wet pipe automatic sprinkler system will be provided in all areas except where omission is permitted by NFPA-13D, 2013 Edition. 3. Residential Horizontal Sidewall Sprinkler heads and Residential Pendent Sprinkler heads will be installed on floors throughout designed for .05 density. (1e) Automatic sprinkler system and control equipment location – Automatic sprinkler controls are located in the rear of the basement (1f) Type/description of automatic standpipe system – N/A (1g) Standpipe system hose valve(s) type and location – N/A (1h) Fire department connection type(s) and location –N/A (1i) Type/description and design layout of the fire protective signaling system – By Others (1j) Fire protective signaling system(s) control equipment and remote annunciator location – By Others (1k) Type/description and design layout of the smoke control or exhaust system(s) – N/A (1l) Smoke control or exhaust system(s) control equipment location – N/A (1m) Building life safety system features (auxiliary functions) required to be integrated as part of the fire protective signaling system – N/A (1n) Type/description and design layout of the fire extinguishing systems – (by others) (1o) Fire extinguishing system(s) control equipment room location – N/A (1p) Fire protection system(s) equipment room location – N/A (1q) Fire protection system(s) equipment identification and operation signs – The sprinkler system shall incorporate all signage as required by NFPA-13D and 780 CMR. (1r) Fire protection system(s) alarm / supervisory signal transmission method and location – By others (1s) Fire command center location – By others (1t) Type/description and location of any emergency alarm system – N/A Beaver Brook Estates – 29 Beaver Brook Estates Northampton, MA  Page 5 June 2nd, 2017 (1u) Type/description and location of any alternative fire suppression system - N/A (1v) Type/description of any carbon monoxide protection – By others Sincerely, Legacy Fire Protection, Inc. Joe Brosseau, President. Scott Henderson P.E.