HomeMy WebLinkAboutORDINANCES - 12151987 - 87-100 ORDINANCE NO. 87-100
(Sprinklers in Buildings Exceeding 10, 000 square feet)
The Contra Costa County Board of Supervisors ordains as follows
(omitting the parenthetical footnotes from the official text of
the enacted or amended provisions of the County Ordinance Code) :
SECTION I . SUMMARY. This ordinance amends the 1985 Edition of
the Uniform Building Code, which is the County' s building code, to
generally require sprinklers in all buildings (except agricultural
buildings and open parking garage buildings ) exceeding 10,000
square feet in floor area, and to disallow openings in area
separation walls unless sprinklers are installed.
SECTION II . Section 74-3 . 503 is added to the County Ordinance
Code, to amend UBC Section 505, to disallow openings in area
separation walls unless sprinklers are installed, to read:
74-3 . 503 UBC Sec. 505 , Area Separation Walls. The
introductory paragraph of Subsection (e) of Section 505 is
amended, to read:
" (e) Area Separation Walls. Each portion of a
building separated by one or more area separation walls
may be considered a separate building provided the area
separation walls contain no openings unless the building
is protected throughout with an approved automatic fire
extinguishing system, as specified in Chapter 38, and
the walls meet the following requirements: "
(Ord. 87-100 § 2 . )
SECTION III. Section 74-3 . 3801 of the County Ordinance Code is
amended, to amend Subsections (b) , (c) and (d) of UBC § 3802 , to
generally require installation of sprinklers in all buildings
exceeding 10,000 square feet in floor area except agricultural
buildings and open parking garage buildings, to read:
74-3 . 3801 UBC Sec. 3802, Automatic Fire-extinguishing
Systems . (a ) Subsection (b) of UBC Section 3802 is amended to
read:
" (b) All Occupancies . An automatic sprinkler system
shall be installed:
1. In every story or basement of all buildings when
the floor area exceeds 1500 square feet and there
is not provided at least 20 square feet of
opening entirely above the adjoining ground level
in each 50 lineal feet or fraction thereof of
exterior wall in the story or basement on at
least one side of the building. Openings shall
have a minimum dimension of not less than 30
inches. Such openings shall be accessible to the
fire department from the exterior and shall not
be obstructed in a manner that fire fighting or
rescue cannot be accomplished from the exterior .
When openings in a story are provided on only
one side and the opposite wall of such story is
more than 75 feet from such openings , the story
shall be provided with an approved automatic
sprinkler system, or openings as specified above
shall be provided on at least two sides of an
exterior wall of the story.
If any. portion of a basement is located more
than 75 feet from openings required in this
section, the basement shall be provided with an
approved automatic sprinkler system.
2 . At the top of rubbish and linen chutes and in
their terminal rooms . Chutes extending through
three or more floors shall have additional
sprinkler heads installed within such chutes at
alternate floors . Sprinkler heads shall be
accessible for servicing.
3. In rooms where nitrate film is stored or handled.
4 . In protected combustible fiber storage vaults as
defined in the Fire Code.
5 . In all buildings when the total floor area
exceeds 10 ,000 square feet. The area of
mezzanines shall be included in determining total
floor area.
EXCEPTIONS; 1. Agricultural buildings.
2 . Group B. Division 3, open parking garage
buildings containing no other occupancies and
where exterior walls containing openings are
located not less than 20 feet from an adjacent
property line or center street line or public
space.
3. When determining whether a building' s total
floor area exceeds 10 , 000 square feet, the floor
area of mechanical rooms of not more than 50
square feet and separated from the remainder of
the building by not less than a 1 hour fire
resistive occupancy separation need not be
considered.
(b) Subsection (c) of UBC section 3802 is amended by
deleting subparagraph 3 .
(c) Subsection (d) of UBC section 3802 is deleted.
(Ords. 87-100 53, 80-14 §7 , 74-30 . )
SECTION IV. EFFECTIVE DATE. This ordinance becomes effective 30
days after passage, and within 15 days of passage shall be
published once with the names of the supervisors voting for and
against it in the Contra Costa Times , a newspaper published in
this County.
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ORDINANCE NO. 87-100
PASSED and ADOPTED on December 15 , 1987 . by the following
vote:
AYES: Supervisors Powers , Fanden, Schroder'; Torlakson , McPeak.
NOES: None .
ABSENT: None .
ABSTAIN: None .
ATTEST: PHIL BATCHELOR, Clerk
of the Board of Supervisors and
County Administrator
By
Deputy Board Chair
LTF:df
( 10/23/87 )
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ORDINANCE NO. 87-100