HomeMy WebLinkAboutLetter re: Fire-Stopping Measure Requirements 2006 i�@�ti
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4: Town of Montville
310 Norwich-New London Tpke.
Uncasville, Ct. 06382
5/24/06
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Giselle Komorowski
80 Polly's Lane
Uncasville, Ct. 06382
Re: 80 Polly's Lane, Uncasville, Ct.
During a recent phone conversation you asked me whether or not fire stopping is required around the
chimney of the single family structure at the above referenced address. I informed you that I would review
the building file for the property to determine the building code in effect at the time of application for
building permit, review the code and furnish the information you request.
On May 23, 2006, I conducted an administrative review of the building file for the above referenced address.
During the review I noted that application for a building permit for a single family structure at that address
was submitted on May 29, 1986. Based on the application date the house was constructed under the State of
Connecticut Basic Building Code/1978. I researched the code and found the following:
Section 875.1 of the referenced code states in part"to provide effective fire barriers against the spread of fire
between all subdivisions and all stories of the building" and "to fire stop all vertical and horizontal draft
openings as specified here in or in section 919.2"
Section 875.9 of the referenced code states in part"Fire stopping meeting the requirements of Section 919.0
shall be provided at each floor level; between the ceiling of the top story and roof space and
at maximum intervals of eight (8) feet in all such spaces;"
Section 919.1 of the referenced code states in part"Fire stopping shall be designed and constructed to close
all concealed draft openings and to form effectual fire barriers against the spread of fire between stories of
every building."
Section 919.2 of the referenced code specifies the materials to be used to construct the required fire stopping.
Section 919.3 requires inspection of the fire stopping.
I am attaching copies of the above referenced code sections. If you have any further questions you may
contact me at the Town of Montville Building Department during regular working hours.
Re s
Vernon D. Vesey II
Building Official
Cc: file
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BUILDING ENCLOSURES,WALLS AND WALL THICKNESS
A retaining wall of durable wood shall not exceed six (6) feet in height.
A wood retaining wall shall be separated from any permanent building by
a minimum distance equal to the height of the wall.
874.6 Where approved durable or treated woods are required: Where
approved durable or treated woods are required in this code,the building
official may require identification by an approved mark or certificate of
inspection. All lumber and plywood required to be preservatively treated
shall bear an approved quality mark of an inspection agency that main-
tains continuing control, testing and inspection over the quality of th
product as described in the quality control standards listed in Appendix
C.
874.7 Pressure treatment: Where pressure treatment of wood members
is required by this code, preservatives and methods of treatment shall
conform to the standards for pressure treatment and preserving of lumber
listed in Appendix C.
874.7.1 Geographical areas: In those geographical areas where expe-
rience has demonstrated a need for greater protection, the requirements in
the preceding items may be modified to the extent required by local
conditions.
SECTION 875.0 FIRE PROTECTION AND FIRESTOPPING
875.1 General: To prevent the free passage of flame through concealed
spaces or openings in event of fire, provision shall be made to trim all
combustible framing away from sources of heat, to provide effective fire
barriers against the spread of fire between all subdivisions and all stories of
the building, to provide adequate fire separation against exterior exposure,
and to firestop all vertical and horizontal draft openings as specified
herein or in Section 919.2.
875.2 Beam separation in ordinary construction (Types 3B and 3C):
All wood and other combustible floor, roof and other structural members
framing into masonry walls shall be cut to a bevel of three (3) inches in
the depth and shall project not more than four (4) inches into the wall;
and the distance between embedded ends of adjacent beams or joists
entering into the wall from opposite sides shall be not less than four (4)
inches.
875.3 Girder separation in heavy timber construction (Type 3A):
Wood girders framing into walls shall have at least eight (8) inches
of masonry between their ends and the outside face of walls and at least
eight (8) inches of masonry between adjacent beams entering the wall
from opposite sides.The girders shall be fire-cut,supported in pockets or in
self-releasing metal boxes, or otherwise supported to minimize destruction
of the wall in the event of fire.
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CONNECTICUT BASIC BUILDING CODE/1978
875.4 Flues and chimneys: Combustible framing shall be trimmed not
less than two (2) inches away from all flues, chimneys and fireplaces, and
six(6)inches away from flue openings.
875.5 Fireplaces: Hearths of noncombustible construction and fire-
boards, mantels and other combustible trim shall comply with Section
1007.0 governing fireplace construction.
875.6 Concealed roof spaces: Concealed roof spaces of all buildings,
except where the roof and attic are of noncombustible or fireproof con- •
struction, shall be subdivided into areas not exceeding three thousand
(3,000) square feet by means of approved fire stops.When doors or other
openings are provided in such subdividing partitions, they shall be of
noncombustible or similarly protected materials and the construction shall
e tightly fitted around all ducts or other assemblies piercing such parti-
tions.
875.6.1 Automatic fire suppression system: Attic spaces, equipped with
an approved automatic fire suppression system throughout, may be sub-
divided into areas not exceeding nine thousand (9,000) square feet by
means of approved fire stops in compliance with this section.
875.7 Architectural trim: Exterior cornices and other exterior architec-
tural elements, where permitted of combustible construction in Section
924.0, or when erected with combustible frames, shall be firestopped at
maximum intervals of twenty (20) feet. If non-continuous, they shall have
closed ends, with at least four (4) inches separation between adjoining
sections.
875.8 Combustible trim and finish: The space behind combustible trim
and finish where permitted under this code and all other hollow spaces
where permitted in fireresistance rated construction shall be back-filled
with noncombustible materials or firestopped as required in Section 920.0.
875.9 Firestopping: Firestopping meeting the requirements of Sec-
tion 919.0 shall be provided in stud walls and partitions and in all furred
or studded off spaces of masonry walls at each floor level; between the
ceiling of the top story and roof space and at maximum intervals of eight
(8) feet in all such spaces; at the top and bottom and at least once in the
middle of each run of stairs; in concealed wall pockets for sliding doors;
at openings for pipes, belts, shafting, chutes and conveyors passing
through combustible floors or partitions with close-fitting noncombustible
caps or metal shutters or other approved noncombustible means; and in
all other locations that would permit the free travel of flame.
SECTION 876.0 THERMAL INSULATING MATERIALS
876.1 General: Insulating batts, blankets, fills or similar types of mate-
rials, including vapor barriers and breather papers or other coverings
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