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FIRE PROTECTION SYSTEMS NARATIVE REPORT
BASIS (METHODOLOGY) OF DESIGN
Section 1 – Building Description
a. Building "Use Group: (B) Business offices, meeting rooms, employee cafe
b. Type(s) of occupancies (hazards within the building):offices
c. TWO story above grade high point of building roof is 27'-0"
d. Zero stories below grade.
e. First floor is 8,800 SF +8,250 SF SECOND FL = 17,050 SF.
f. Storage: In accordance with NFPA-13 for miscellaneous storage under
12-0” feet in height.
The highest wet sprinkler flow requirement is .10 GPM over the most remote 900
square feet which requires 142.5 GPM@ 51.5 PSI at the base of the riser and
242.5 GPM@61.7 PSI at the connection to the city main.
Water flow test is 106 PSI Static, 91 PSI Residual with 1247 GPM flowing.
Section 2 – Applicable Laws, Regulations and Standards
a. 780 CMR code sections "Fire Protection System Requirements"
903.2.0 Fire Suppression Systems
903.4.2 Requires audio visual alarm devices
903.4.1 Monitoring
b. NFPA Standards and Editions used for the design of each specific fire
protection system, NFPA 13, 2013; NFPA 72, 2010; NFPA 24, 2007
Section 3 –Design Responsibility for the Fire Protection Systems
JFV Engineering, LLC develops a full system layout, design criteria and calculations and
certifies the system installation for code compliance at completion.
Section 4 –Fire Protection Systems to be installed
a. Water supply will be taken from the existing 8” City
main in Village hill
b. Sprinkler systems and components.
c. Fire alarm systems and components- audio and visual appliances installed
throughout in accordance with NFPA 72.
d. Manual suppression systems are not required.
e. Seismic isn’t required in accordance with NFPA 13.
f. Siamese fire department connection provided on the west side of
the building.
All of the above items are required by regulations (780 CMR) all systems are new
901.2.1(1.a.ii) Sequence of Operation
Section 1
Wet sprinkler system:
System operates automatically upon the fusing of a single fire sprinkler. Operational
Sequence:
a. Wet system operates automatically on water flow from a single sprinkler.
Closed contacts on the flow switch will provide alarm contact for the fire
control panel and activate the local audible visual panels.
901.2.1(1.a.iii) Testing Criteria
Section 1- Testing Criteria in accordance with NFPA 13
System piping:
1. Hydrostatically test wet and dry system piping at a pressure of 200 psi for
two hours without a loss of pressure.
2. Conduct a full forward flow test of the backflow preventer at a rate of
430.9 GPM through the wet 2” main drain.
3. A 2" main drain test shall be conducted. Record static and residual
pressures on the test certificates.
4. Conduct system operational and alarm test on the system from the
inspector's test connection in accordance with NFPA 13.
5. Central station must receive the alarm and trouble signals.
Warehouse Mechanical is in charge of setting up and conducting the testing. Warehouse
Mechanical will provide test certificates
Section 2- Equipment and Tools
a. Manufacturer's instructions
b. Approved narrative report, sequence of operations section
c. Flow measuring devices- pitot tube for backflow preventer full forward
flow test
d. Gauges- main riser for 2" drain and hydrostatic testing
e. Fire hose is required to direct backflow flushing
Section 3- Approval Requirements
a. Certification from JFV Engineering, LLC. stating that the fire
protection sprinkler system has been installed in accordance with the
approved fire protection construction documents and that he has reviewed
the as-built drawings for conformance to 780 CMR 901.7.4 and has
identified deviations if any, from the approved fire protection construction
documents.
b. Confirmation by the building owner/developer or authorized
representative that they have received the as-built sprinkler system shop
drawings from the installing contractor
c. Material Test, Performance and Completion Certificates, properly
executed by the installing contractor in accordance with the applicable
NFPA Standards.
d. Satisfactory functional test of all fire protection systems witnessed by the
Building official and the head of the fire department or their designees.