(SIGNED)CornerHouse_Legacy_20161102_NarrativeCorner House– 5 Pomeroy Terrace Northampton, Ma
02 Nov 2016
Legacy Fire Protection, Inc
592 CENTER STREET
P.O. BOX 582
LUDLOW, MA 01056
Tel. (413) 589-0672
02 Nov 2016
Fire Prevention Bureau
Northampton Fire Department
26 Carlon Drive Northampton, Ma
Subject: New Sprinkler System Install Corner House
5 Pomeroy Terrace
Northampton, Ma
This letter will serve as confirmation that we have taken into consideration Massachusetts State Building Code with regard to the design of the automatic fire protection system and compliance with applicable codes at the above referenced location.
BASIS (METHODOLOGY) OF DESIGN
SECTION 1 – Building Description a) Building “Use” Group: Residential
b) Total square footage: 9,100 ft²
c) Number of floors above grade: 3 d) Number of floors below grade: 1
e) Type of construction: Combustible
f) Type of hazards: Ordinary Group I & Residential g) Hazardous material usage and storage: N/A
h) High storage of commodities: N/A
SECTION 2 – APPLICABLE STANDARDS
a) 2009 IBC & 8th Edition Massachusetts State Building Code Amendments
b) NFPA – 13: Sprinkler Systems, 2013 Edition c) NFPA - 13R: Low-Rise Residential Occupancies, 2013 Edition
SECTION 3 – DESIGN RESPONSIBILITY
Sprinkler system design drawings and calculations shall be reviewed and stamped by a registered
Professional Engineer, registered in State of Massachusetts in discipline of Fire Protection systems design, employed or contracted to review the design of the system for this building. The
installing sprinkler system contractor shall contract such design work, as part of their overall
work scope. The reviewing engineer shall be the engineer of record.
Corner House– 5 Pomeroy Terrace Northampton, Ma
02 Nov 2016
SECTION 4 – FIRE PROTECTION SYSTEMS TO BE INSTALLED This project involves the installation of a new wet pipe automatic sprinkler system. The system in
the basement will be black steel pipe. Floors 1 through 3 will use CPVC pipe.
SECTION 5 – FEATURES USED IN THE DESIGN METHODOLOGY
Area 1 (Unit 5) is hydraulically calculated to accommodate a residential design density of 0.05 gpm over four heads in the most hydraulically demanding compartment with a 100 gpm hose stream allowance.
Area 2 (Basement) is hydraulically calculated to accommodate an ordinary hazard group I design
density of 0.15 gpm over 989ft² in the most hydraulically demanding location with a 250 gpm
hose stream allowance. Remote area is reduced for quick response heads per NFPA 13 section 11.2.3.2.3.
Area 3 (Unit 4) is hydraulically calculated to accommodate a residential design density of 0.05 gpm over four heads in the most hydraulically demanding compartment with a 100 gpm hose
stream allowance.
SECTION 6 – SPECIAL CONSIDERATION AND DESCRIPTION
No deviations are intended
SEQUENCE OF OPERATION
SECTION 1 In the event of a fire, one or more sprinklers will operate. The installed network of piping will
supply water to the operating sprinklers. When a sprinkler operates (fuses), the flow of water will activate the flow switch and the existing
electric bell will sound. The flow switch will send an electric signal to the alarm panel, simultaneously sending an alarm (installed by others) to the fire department and will sound an audible alarm within the building alerting the occupants. The building is not equipped with a
standpipe system.
To increase sprinkler system pressure, the fire department will be able to connect hoses from a
pumper truck to the existing fire department connection.
TESTING CRITERIA
SECTION 1 - Testing Criteria
The sprinkler system shall be tested in accordance with NFPA pamphlet 13.
SECTION 2 - Equipment and Tool
Sprinkler system installing contractor shall supply all necessary tools and
equipment required to conduct the required testing of the systems.
SECTION 3 - Approval Requirements Upon the completion of the installation of the automatic fire sprinkler system, the installing contractor shall perform all tests required by NFPA-13.
Corner House– 5 Pomeroy Terrace Northampton, Ma
02 Nov 2016
Submitted by: LEGACY FIRE PROTECTION, INC.
592 Center Street Ludlow, MA 01056 413-589-0672
Joe Brosseau, President
Scott Henderson, P.E.