(SIGNED)Upper Ridge Flats - East Building - 10-01-2015 - FP NarrativeUpper Ridge Flats – 73 Village Hill Road Northampton, Ma 01053
October 01st 2015
Legacy Fire Protection, Inc
592 CENTER STREET
P.O. BOX 582
LUDLOW, MA 01056
Tel. (413) 589-0672
October 01st 2015
Fire Prevention Bureau
Northampton Fire Dept
210 Main Street Northampton, Ma 01060
Subject: New Apartments Upper Ridge Flats
73 Village Hill Road
Northampton, Ma 01053
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
Date: 10-01-2015
901.2.1 (1.a.i) BASIS (METHODOLOGY) OF DESIGN
SECTION 1 – Building Description a) Building “Use” Group: “R-2” Residential
b) Total square footage: Renovation space – 13,000 sq ft approx
c) Number of floors above grade: 3 d) Number of floors below grade: 1
e) Type of construction: Wood Construction with wood floor joists and beams
f) Type of hazards: Residential g) Hazardous material usage and storage: none
h) High storage of commodities: none SECTION 2 – APPLICABLE STANDARDS
a) 780 CMR Code: Fire Protection Systems Requirements b) NFPA Standards: NFPA - 13 2013 Edition (Sprinkler Systems)
Upper Ridge Flats – 73 Village Hill Road Northampton, Ma 01053
October 01st 2015
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.
SECTION 4 – FIRE PROTECTION SYSTEMS TO BE INSTALLED Installation of new CPVC wet sprinkler system to accommodate the basement, first, second floor,
and third floors.
Installation of new galvanized steel dry sprinkler system to accommodate the attic.
SECTION 5 – FEATURES USED IN THE DESIGN METHODOLOGY The floors 1-3 are designed for residential occupancy in all areas with sprinklers spaced to cover
a maximum of 256 sq ft and calculated for a .10 density over the four most demanding heads. All
sidewalls are spaced for 16’x16’ and all concealed pendents are 16’x16’.
Floors 1 and 2 combustible concealed areas are designed for light hazard occupancy in all areas
with sprinklers to cover a maximum of 196 sq ft and calculated for a .10 density over 1112 sq ft. All sprinklers are spaced for 14’x14’.
The basement is designed for ordinary hazard group 1 occupancy with semi-recessed sprinklers spaced to cover a maximum of 130 sq ft and calculated for a .15 density over 912 sq ft.
The attic is designed for light hazard occupancy with BB1 sprinklers spaced to cover 360 sq ft and calculated for a .10 density over the seven most demanding heads. All BB1s are spaced no
more than 6’ apart and can cover up to a 60’ span. SECTION 6 – SPECIAL CONSIDERATION AND DESCRIPTION
No deviations are intended
901.2.1
(1.a.ii) 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.
901.2.1 (1.a.iii) TESTING CRITERIA
SECTION 1 - Testing Criteria
Upper Ridge Flats – 73 Village Hill Road Northampton, Ma 01053
October 01st 2015
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.
Submitted by: LEGACY FIRE PROTECTION, INC.
592 Center Street
Ludlow, MA 01056 413-589-0672
Joe Brosseau, President
Scott Henderson, P.E.