022120-CFP954-Narrative-Essex St SalemNARRATIVE
For Fire Sprinkler Systems
Per Massachusetts 780 CMR Ninth Edition
Date: February 15, 2020
Project:
217 – 221 Essex Street
Salem, MA
Contractor:
Ocean State Fire Protection
16 Kepler Street
Providence RI, 02908
PREPARED BY:
CORNELIUSEN
CONSULTING INC.
11 CRICKET LANE
LITTLETON, MA 01460
781-248-7497
1 - Building Description:
* Existing Construction: Wood Frame Construction With GWG ceilings
* SQ FT of footprint under consideration = 2,500 approximately
* Floors above grade = 3-5
* Floors below grade = 1
* Occupancies = Retail
* Hazardous materials = None known
* High Storage - None Known - Limited to 12 ft
2 - Applicable Laws, Regulations, Standards:
* NFPA 13 (2013) Installation of Sprinkler Systems
* 780 CMR Mass. State Building Code (Current Edition)
* Underwriters Laboratories Inc. Publications
* Manufacturer's Listed and Approved
* Design/Installation/Maintenance Manuals
3 - Design Responsibility for Fire Protection Systems:
* Shop drawings developed by Comprehensive Fire Protection LLC.
* Engineer of record Joel Corneliusen FPE
* Fire Alarm by others.
* Kitchen/Cooking suppression by others.
* Manual suppression systems by others.
* Smoke control systems by others
4 - Fire Protection Systems to be installed:
The fire protection project consists of installing new sprinkler protection in an existing tenant
space. Existing system riser, feed mains, FDC, and all pipe and sprinklers outside of scope of
work are to remain.
5 – Design Methodology:
All new sprinkler piping to be steel schedule 10 with grooved fittings or steel schedule 40 with
threaded fittings. The scope of work includes a single tenant space on the basement level and
1st floor only. All other areas are not in contract. Concealed spaces above existing ceilings
appear to be noncombustible (installer to confirm). All combustible concealed spaces (if any) in
scope of work shall be filled with noncombustible insulation. All areas housing sprinkler pipe
shall be maintained at a minimum temperature of 40 F. All areas are calculated per NFPA 13
2013 to Ordinary Hazard group 2 ( .20/ 1,500 sqft max). The quick response area reduction
allowance is applied to both calculations. Pipe schedule is determined using hydraulic
calculations. Basement sprinklers can be spaced to a maximum of 130 sqft. 1st floor sprinklers
can be spaced to a maximum of 100 sqft.
Hydrant flow test information used in calculations in more than 12 months old. Installer to
conduct new hydrant flow test ASAP. Designer and Engineer take no responsibility to design
changes which may be required based on new hydrant flow test information.
CODE REFERENCES:
* Design and installation to conform to NFPA 13 2013 edition
* Design and installation to conform to State Code, Local Fire and Building Departments.
6 - Special considerations and descriptions:
* No official code interpretations.
* No official waivers or variances.
7 - Sequence of operation:
* Fire sprinkler activates.
* Water starts flowing and activates a water flow switch.
* Water flow switch sends alarm signal to alarm panel and Fire Department.
* Building alarm is activated.
8 - Testing criteria:
* Tests will be conducted to the satisfaction of local authorities.
* Tests to be set up and scheduled by the contractor.
* Water will be flowed from the test valve on the riser.
* Pipes to be pressure tested to normal system pressure psi for two hours.
* All alarm and tamper switches to be tested for proper activation.
* Written approval of final tests to be obtained from the code official.
* Required fire sprinkler and aboveground piping reports to be submitted to the code officials.