24B-067 263 King St Fire NarrativeFire Sprinkler portion of
Narrative Report
LiaKia
King Street
Northampton, Ma
BY
Warehouse Mechanical Contractors, Inc.
342 Britton Street
Chicopee, Ma 01020
Ma Sprinkler Contractor License SC 2254
Expires 11123/2013
413-536-9222 Phone
413-535-2486 Fax
August 31, 2012
FIRE PROTECTION SYSTEMS NARRATIVE REPORTS
BASIS (METHODOLOGY) OF DESIGN
Section I-Building Description
a. Building "USE" Group Mixed: B-Business Showroom, S-2 Parts storage,
S-1 Repair.
b. Type (s) ofoccupancies (hazards within building): Automobile Dealership
c. One story above grade high point ofbuilding roof is 22-0.
d. Zero story below grade.
e. First floor total 16,941 Square feet.
f. Storage: In accordance with NFP A 13 ordinary hazard
occupancy. Storage of Flammable/Combustible liquids
shall be in accordance with the exempt quantity
limitations of 780 CMR Table 307.7(1) & (2) and 527
CMR 14 and its referenced sections ofNFPA 30.
Highest estimated demand in the building is for ordinary hazard
group two .20 X 1500 =362 GPM required at base of riser at 30.6
PSI.
Water flow test 6/0212011 129 Residual 105 Total Flow 1738 GPM.·
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. NFP A Standards and Edition used for design ofeach specific fire protection
system NFPA 13, 2007 NFPA 72, 2007NFPA 24,2007 NFPA 30, 2007, NFPA
30B 2010.
Section 3 -Design Responsibility for Fire Protection Systems
Warehouse Mechanical Inc. the installing contractor completely designs and specifies
(develops a full system layout, design criteria and calculations) and certifies system
installation for code compliance at completion.
Exempt from requirement for seal ofMassachusetts Registered Professional Engineer in
accordance with <G:,C 112 section 81R.
Section 4-fire Protection systems to be installed.
a. Water supply new 6" sprinkler main connected to 10"
circultating city main in King street.
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-small hose stations and
standpipe aren't required.
e. Seismic provided in accordance with NFP A 13.
f. Storz connection provided as required on the west side which is the street
side of the building.
All ofthe above items are required by regulations. (780 CMR) all systems are new.
901.2.1 (l.a.ii) Sequence of operation
Section 1
Wet sprinkler system:
System operates automatically upon the fusing ofa single fire sprinkler. Operational
Sequence:
1. System operates automatically on water flow from a single sprinkler. Closed contact on
pressure switch will activate '
local audible visual panels and provide alarm contact for the fIre control panel.
901.2.1 (l.a.iii) Testing Criteria
Section I-Testing Criteria in accordance with NFP A 13.
Underground piping: Hydrostatically test at a pressure of200 psi for two hours without a
loss of pressure.
Flush at 880 g.p.m. or maximum available.
System piping:
a. Hydrostatically test at a pressure of200 psi. for two hours without a loss of
pressure.
b. In accordance with NFPA 13 conduct forward flow test of backflow
preventer at a rate of 362 GPM.
c. 2" main drain test shall be conducted, Record Static and residual pressures on
test certifIcate.
d. Conduct system operational and alarm test on system from inspectors test
connection in accordance with NFPA 13.
e. Central station must receive alarm and trouble signals.
Warehouse Mechanical is in charge ofsetting up and coordinating testing. Warehouse
Mechanical will provide test certificates.
Section 2-Equipment and Tools
a. Manufacturer's instructions
b. Approved Narrative Report, sequence ofoperation section.
c. Flow measuring devices-pitot tube for backflow preventer.
d. Gauges-main riser for 2" drain and hydrostatic testing.
e. Fire hose is required to direct backflow preventer flushing.
Section 3-Approval Requirements
a. Certification from Warehouse Mechanical Contractors, Inc. 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 ifany, 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 NFP A
Standards.
d. Satisfactory functional test ofall fire protection systems witnessed by the
Building official and the head ofthe fire department or their designees.