HomeMy WebLinkAboutOrd 16941
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ORDINANCE NO. 1694
ORDINANCE OF THE CITY OE BURLINGAME ADOPTING REVISIONS TO
TITLE 18, BUILDING CODE, MECHANICAL CODE, PLUMBING CODE, AND
ELECTRICAL CODE
The City Council of the City of Burlingame ordains as follows:
Section 1. The City of Burlingame is located between the Santa Cruz Mountains foothills
and San Francisco Bay, with a number of substantial creeks flowing through highly developed
residential and industrial areas. It is surrounded by large areas of open space maintained in natural
condition, as well as having a significant natural canyon in the center of the residential area. Strong
winds come down the foothills during both the driest and the wettest parts of the year. The City
is directly east of the San Andreas Fault, and much of the highly developed part of the City is
located along the front of the Bay, much of it on fill. The United States Geologic Survey, the
California Division of Mines and Geology, and the Association of Bay Area Governments have
extensively mapped the area for such earthquake probabilities. The foothill areas have a variety
of soil formations with steep canyons and heavy precipitation. Much of the City has a high water
table. Fires in the community could quickly spread because of the extensive, natural vegetation
throughout the City. The City has a number of highly developed commercial areas with older
buildings, and an industrial area that is filled with mixed uses utilizing various materials that could
be highly hazardous. In addition, heavily traveled approach and departure routes for San Francisco
International Airport are immediately adjacent or over the City. The City is also located in a
national climate zone that is designated "Very High" on the Termite Infestation Probability Map.
The City has worked with other jurisdictions on the San Francisco Peninsula to establish consistent
standards to minimize the impact that varying standards might have on development and
redevelopment of both residential and commercial buildings. It is only through strong building
standards and effective fire prevention and containment programs that citizens will receive the
protection they deserve, and that citizens will be able to obtain reasonably priced insurance for their
homes and businesses. In seeking to attain these goals, the building standards in Title 18 have been
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and are adopted.
Section 2. In addition, in order to provide appropriate, clear information to applicants fox
construction approvals, Sections 18.07.050 and 18. 12.030 are adopted to conform Title 18 to
Zoning Code requirements established in the Municipal Code.
Section 3. The City operates its own sanitary sewer system and water quality control plant
and is subject to State and Federal laws regarding both point and non -point discharges. Sections
18.07.060, 18.08.0105 18.12.080, 18.12.0905 18.12.100, 18.12.110, 18.12.115, 18.12.120, and
18.12.125 are intended to assist the City in meeting its responsibilities regarding those laws as well
as protecting the public safety and welfare.
Section 4. The City also operates its own water supply system fox its citizens. Sections
18.07.060,18.12.050,18.12.060,18.12.070, and 18.12.100 areintendedtoprovide consistentpolicy
regarding water service installations and to protect the public's water supply.
Section 5. Chapter 18.08 is amended to read as follows:
Chapter 18.08
BUILDING CODE
18.08.010 Adoption of Uniform Building Code Volume 1.
18.08.020 Adoption of Uniform Building Code Volume 2.
18.08.010 Adoption of Uniform Building Code Volume 1.
The rules, regulations and requirements published by the International Conference of
Building Officials under the title "1997 Uniform Building Code Volume 1" and adopted as the
2001 California Building Code Volume 1 " including Appendix Chapters 3A (Division I only), 4
(Division I only), 12 (Division IIA only), 15, 31 (Division III only), 33 and 34 and State of
California amendments thereto, are adopted as and for the rules, regulations and standards within
this city as to all matters therein contained with the following amendments:
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(a) Section 105 amended —Appeals.
Section 105 is amended to read as follows:
SECTION 105 —APPEALS
An appeal of a denial of or a refusal to issue a perm t or from any other decision of
the building official may be taken as set forth in section 18.07.040.
(b) Sections 106 through 109 and Table 1-A deleted.
Sections 106 through 109 and Table 1-A are deleted.
(c) Section 213 amended —Add Definition -Light Frame Construction.
Section 213 is amended by adding the following definition:
LIGHT -FRAME CONSTRUCTION is a type of construction whose
vertical and horizontal structural elements are primarily formed by a system of
repetitive wood or light gauge steel framing members.
(d) Section 310.6.1 amended -Ceiling Height
Section 310.6.1 is amended to read as follows:
310.6.1 Minimum height: Habitable rooms
hallways, corridors, bathrooms, toilet
rooms, laundry rooms and basements shall have a ceiling height of not less than 7
feet (2134 mm). The height shall be measured from the finished floor to the lowest
projection from the ceiling.
EXCEPTIONS:
1. Beams and girders spaced not less than 4 feet (1219 mm) on
center may project not more than 6 inches (152 mm) below the required
ceiling height.
2. Ceilings in basements without habitable spaces may project to
within 6 feet, 8 inches (2032 mm) of the finish floor; and beams, girders,
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ducts or other obstructions may project within 6 feet, 4 inches (1931 mm)
of the finished floor.
3. Not more than 50 percent of the required floor area of a room or
space is permitted to have a sloped ceng less than 7 feet (2134 mm) in
height with no portion of the required floor area less than 5 feet (1524 mm)
in height.
(e) Section
502 amended
—Premises identification
required.
Section 502
is amended to
read as follows:
floor
SECTION 502 —PREMISES IDENTIFICATION
Approved numbers or addresses shall be placed on all new and existing buildings
in such aposition as to be plainly visible and legible from the street or road fronting
the property. Said numbers shall contrast with their background, shall be a
minimum of one-half inch stroke by two and one-half inches high, and shall be
either internally or externally illuminated in all new construction, alterations or
repair of existing construction. The power of such illumination shall not be
normally switchable. Numbers or letters shall be designated on all occupancies
within a building. Size shall be a minimum one-quarter inch stroke by two inches
high and on a contrasting background. Directional address numbers or letters shall
be provided. Said addresses or numbers shall be posted at a height no greater than
5 feet, 6 inches above the finished floor.
(f) Section 1203.2 amended -- LIGHT AND VENTILATION IN GROUP R
OCCUPANCIES.
8/8/2002
Section 1203.2 is amended to read as follows:
1203.2 LIGHT and VENTILATION -HABITABLE ROOMS. All habitable
rooms shall be provided with an aggregate glazing area of not less than
0
8 percent
of the
floor
area of such rooms.
Natural ventilation shall be
through
windows,
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doors, louvers or other approved openings to the outdoor air. Such openings shall
be provided with ready access or shall be otherwise readily controllable by the
building occupants. The minimum openable area to the outdoors shall be 4 percent
of the floor area being ventilated.
EXCEPTIONS:
1. The glazed areas need not be openable if not designated as
emergency escape and rescue windows and an approved mechanical
ventilation system is provided capable of producing 0.35 air change per
hour in the room or a whole -house mechanical ventilation system capable
of supplying outdoor ventilation air of 15 cubic feet per minute (cfm (7.08
L/s) per occupant computed on the basis of two occupants for the first
bedroom and one occupant for each additional bedroom.
2. The glazed areas need not be provided in rooms where Exception
1 above is satisfied and artificial light is provided capable of producing an
average illumination of 6 footcandles (6.46 lux) over the area of the room
at a height of 30 inches (762 mm) above the floor level.
Bathrooms: Bathrooms, water closet compartments an
d other similar rooms shall
be provided with aggregate glazing area in windows of not less than
3 square feet
(0.279 square meter), one-half of which must be openable.
EXCEPTION: The glazed areas shall not be required where artificial light
and a mechanical ventilation
fin (9.4
system are
provided.
The minimum
ventilation rates shall be 50 cfm
(23.6 Us) for
intermittent
ventilation or 20
(9.4 L/s) for continuous ventilation. Ventilation air from the space
shall be exhausted directly to the outside.
(g) Section 1203.3 deleted -- Ventilation.
Sect on 1203.3 is hereby deleted.
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(h) Section 1503 amended — Roof covering requirements.
The first paragraph of Section 1503 is amended to read as follows:
All materials applied as roof covering on any structure regulated by this code shall
have a fire retardant rating of Class A or B as specified in Table 15-A as amended
herein, treated in accordance with UBC Standard 15-7.
EXCEPTIONS:
1. Detached patio covers, spa covers, gazebos and sheds with 120
square feet or less of projected roof area, and awning covers, are exempt
from Section 1503 and Appendix Section 1514.
2. Roof covering repairs of less than 300 square feet are exempt
from Section 1503 and Appendix Section 1514.
(i) Section 1506.5 amended -Roof
and surface
drainage
requirements.
Section 1506.5 is amended to read
as follows:
1506.5 Roof and Surface Drainage Requirements.
1.506.5.1 In all zones other than R-1, the water from the roof of any building and
from any paved area which would flow by gravity over public sidewalk shall be
carried by means of conductors under the sidewalk and through the curb to the
gutt
er, or other approved location.
1506.5.2 No storm water or underground water draining from any lot, building, or
paved area shall be allowed to drain to adjacent properties nor shall this water be
connected to the city's Sanitary sewer system. Regardless of the slope of the source
property, such water shall drain to either artificial or natural storm drainage
facilities by gravity or pumping.
(j) Appendix Chapter 15 amended -Reroofing requirements.
The following portions of Sections 1514 and 1521 of Appendix Chapter 15 are amended
I as follows:
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(1) The second paragraph of Section 1514 is amended to read:
Roof covering materials shall be fire retardant Class A or Class B in
accordance with Tables 15-A and 15-13-2 as amended, and reroofing materials and
methods of application shall comply with the applicable UBC Standards or shall
follow the manufacturer's installation requirements when approved by the building
official.
(2) Section 1521 of Appendix Chapter 15 is amended by adding the following sentence at
the end of the section:
Such roofing materials shall comply with the fire retardancy requirements of
Section 18.08.080.
(k) Table 15 -A --Roof Minimum fire retardant classes.
Table No. 15-A is amended to read as follows:
TABLE NO. 15-A —MINIMUM ROOF CLASSES
TYPES OF CONSTRUCTION
I
II
III
IV
V
OCCUPANCY
FR
FR
I HR
N
1 HR
N
HT
N
A-1
B
B
-A-2,
A-2.1
B
B
B
B
B
B
B
F
B
A-3
B
B
B
B
B
B
B
B
A-4
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
E
B
B
B
B
B
B
B
B
B
F
B
B
B
B
B
B
B
B
B
H-1
A
A
-
-
H-2 thru H-6
A
B
B
B
B
B
B1-1
thru I-2.1
A
B
eBB
B
B
B
I-3
A
B
M
B
B
B
B
B
B
B
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A -Class A Roofmg B -Class
B Roofing C -Class
C Roofing
HT -Heavy Timber FR -Fire Resistive
All footnotes are deleted
PRESSURE TREATED
PRESSURE TREATED
(L� Table 15-B-2 — Wood shingle or shake application.
Sections 1 through 3 of Table 15-13-2 are amended to read as follows:
TABLE NO. 15-B-2 —SHINGLE OR SHAKE APPLICATION
FIRE -RETARDANT
FIRE RETARDANT
PRESSURE TREATED
PRESSURE TREATED
WOOD SHINGLES
WOOD SHAKES
ROOF SLOPE
Not permitted below 3:12
Not permitted below 4:12'
1. Deck requirements
Shingles and shakes shall be applied to roofs with solid sheathing.
2. Interlayment
No requirements.
One 18 -inch wide interlayment
of Type 30 felt shingled
between each course in such a
manner that no felt is exposed
to the weather below the shake
butts.
3. Underlayment
Metal foil with Type 30 felt
The above material shall be
liner between courses or other
placed over metal foil with
underlayment that would allow
Type 30 felt liner between
the roof covering and assembly
courses or other underlayment
to achieve Class B rating.
to achieve a Class B rating.
' When approved by the Building Official, wood shakes may be installed on a slope of not less than 3
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inches in 12 inches when an underlayment of not less than nonperforated Type 15 felt is installed.
section:
8/8/2002
(m) Section 1611.6 amended —Retaining wall requirements.
Section 1611.6 is amended by adding the following two paragraphs at the end of the
When a structure is to support a lateral load which retains fill which
supports another structure, supports the toe of a slope which is over four feet in
height measured from the bottom of the footing, or is required by the city engineer,
it shall be designed by a licensed architect or engineer and approved by the city
engineer.
The
following
types of retaining walls shall be of concrete
or other material
which shall
have a minimum
service life of 75 years for all major
support systems
and 50 years for all replaceable support systems: Walls that are engineered, support
a lateral load over 18" at property line, support an engineered surcharge, support a
structure, or support a toe of a slope. A fence structure may not be substituted for
a retaining wall.
(n) Section 1904.4 amended --Minimum slab thickness.
Section 1904.4 is amended to read as follows:
1904.4 The minimum thickness of concrete floor slabs shall be 3-1/2 inches (89
mm).
Membrane waterproofing or waterproofing acceptable to the building
official shall be provided.
Such granular material shall be approved by the building official.
Concrete slabs on grade shall be reinforced with not less than six inch by six
inch ten gauge wire mesh install
ed at the nominal mid -point of the slab thickness.
(o) Section 3403 amended —Additions, alterations or repairs -Suspended ceiling
WO
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upgrade.
Section 3403 is amended by adding a new Subsection 3403.6 to read as follows:
Section 3403.6 Suspended Ceiling Upgrade. When an addition, alteration or
repair is performed on an occupancy in which there is an existing suspended
ceiling, such suspended ceiling shall be modified throughout to comply with the
lateral design requirements of UBC Standard 25-2.
1808.020 Adoption of Uniform Building Code, Volume 2.
The rules, regulations and requirements published by the International Conference of
Building Officials under the title "1997 Uniform Building Code Volume 2" and adopted as the
2001 California Building Code Volume 2" is adopted as and for the rules, regulations and
standards within this city as to all matters therein contained except as amended as follows:
(a) Section 1612.2.1 amended -- General.
Section 1612.2.1 is amended to read as follows:
1612.2.1 Basic load combinations. Where Load and Resistance Factor Design
(Strength Design) is used, structures and all portions thereof shall resist the most
critical effects from the following combinations of factored loads:
1.4D (12-1)
1.2D + 1.6L + 0.5 (L, or S) (12-2)
1.2D + 1.6 (L, or S) + (f, L or 0.8 W) (12-3)
1.2D+1.3W+(f,L+0.5 (L,orS) (12-4)
L2D + 1.0E + (f, L + fz S) (12-5)
0.9D + (1.OpE,, or 1.3W) (12-6)
WHERE:
f, = 1.0 for floors in places of public assembly, for live loads in
excess of 100 psf (4.91cN/m� ), and for garage live load.
0.5 for other live loads.
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fZ = 0.7 for roof configurations (such as saw tooth) that do not
shed snow off the structure.
0.2 for other roof configurations.
EXCEPTIONS: 1. Factored load combinations for concrete per
Section 1909.2 where load combinations do not include seismic forces.
2. Where other factored load combinations are specifically required
by the provisions of this code.
(b) Section 1612.3.1 amended —Basic Load Combinations.
The last sentence in section 1612.3.1 is amended to read as follows:
No increase in allowable stresses shall be used with these load combinations except
as specifically permitted elsewhere in this code and the duration of load increase
permitted in Division III of Chapter 23.
(c) Section 1612.3.2 amended —Alternate Basic Load Combinations.
The last sentence of the first paragraph of the section is amended to read:
When using these altern
ate basic load combinations, acne -third increase shall be
permitted in allowable stresses for all combinations including W or E but not
concurrent with the duration of load increase permitted in Division III of Chapter
23.
(d) Section 1629.4.2 amended —Seismic Zone 4near-source Factor
Section 1629.4.2 is amended to read as follows:
1629.4.2. Seismic Zone 4near-source factor. In Seismic Zone 4, each site shall
be assigned anear-source factor in accordance with Table 16-S and the Seismic
Source Type set forth in Table 16-U. The value of N used in determining Caneed
not exceed 1.1 fox structures complying with all the following conditions:
1. The soil profile type is Sj, SB, Sc or SD.
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2. p = 1.0.
3. Except in single -story structures, Group R, Division 3 and Group U,
Division 1 Occupancies, moment frame systems designated as part of the lateral -
force -resisting system shall be special moment -resisting frames.
4. The provisions in Sections 9.6a and 9.6b of AISC - Seismic Part 1 shall
not apply, except for columns in one-story buildings or columns at the top story of
multistory buildings.
5. None of the following structural irregularities is present: Type 1, 4 or 5
of Table 16-L, and Type 1 or 4 of Table 16-M.
(e) Table 16-N amended
Table 16-N is amended to read as follows:
TABLE 16-N — STRUCTURAL SYSTEMS'
BASIC STRUCTURAL
SYSTEM
LATERAL -FORCE -RESISTING SYSTEM
DESCRIPTION
R
620
HEIGHT LIMIT
FOR SEISMIC
ZONES 3 AND 4
(feet)
x 304.8 form mm
1. Bearing wall system
1. Light -framed walls with shear panels
a. Wood structural panels for structures
5.5
2.8
65
three stories or less
b. All other light -framed walls
4.5
2.8
65
2. Shear walls
a. Concrete
4.5
2.8
160
b. Masonry
4.5
2.8
160
3. Light steel -framed bearing walls with
2.8
2.2
65
tension -only bracing
4. Braced frames where bracing carries
gravity load
a. Steel
4.4
2.2
160
b. Concrete'
2.8
2.2
c. Heavy timbers
2.8
2.2
65
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2. Building frame system
1. Steel eccentrically braced frame (EBF)
7.0
2.8
240
2. Light -framed walls with shear panels
a. Wood structural panel walls for
6.5
2.8
65
structures three stories or less
b. All other light -framed walls
5.0
2.8
65
3. Shear walls
a. Concrete
5.5
2.8
240
b. Masonry
5.5
2.8
160
4. Ordinary braced frames
a. Stec16
5.6
2.2
356
b. Concrete'
5.6
2.2
-5
c. Heavy timber
5.6
2.2
65
5. Special concentrically braced frames
a. Steel
6.4
2.2
240
3. Moment -resisting frame
I. Special moment -resisting frame (SMRF)
system
a. Steel
8.5
2.8
N.L.
b. Concrete4
8.5
2.8
N.L.
2. Masonry moment -resisting wall frame
6.5
2.8
160
(MMRWF)
3. Intermediate moment -resisting frame
(1M RF)
a. Steel'
4.5
2.8
356
b. Concrete'
5.5
2.8
----
4. Ordinary moment -resisting frame
(OMRF)
3.5
2.8
35'
a. Steel'
3.5
2.8
b. Concretes
6.5
2.8
240
5. Special truss moment frames of steel
(STMF)
4. Dual systems
1. Shear walls
a. Concrete with SMRF
8,5
2.8
N.L.
b. Concrete with concrete IMRF5
6.5
2.8
c. Masonry with SMRF
5.5
2.8
d. Masonry with IN/FRF'
4.2
2.8
-
e. Masonry with masonry MMRWF
6.0
2.8
160
2. Steel EBF
a, With steel SMRF
8.5
2.8
N.L.
3. Special concentrically braced frames
a. Steel with steel SMRF
7.5
2.8
N.L.
5. Cantilevered column building
1. Cantilevered column elements
2.2
2.0
357
systems
6. Shear wall -frame interaction
1. Concrete'
5.5
2.8
160
systems
7. Undefined systems
See Sections 1629.6.7 and 1629.9.2
-
-
-
N.L.- no limit
' See Section 1630.4 for combination of structural systems.
z Basic structural systems are defined in Section 1629.6.
s Prohibited in Seismic Zones 3 and 4.
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Includes precast concrete conforming to Section 1921.2.7.
Prohibited in Seismic Zones 3 and 4, except as permitted in Section 1634.2.
In Seismic Zones 3 and 4 steel IMRF's, OMRF's and steel ordinary braced frames are permitted
as follows:
e.i Structures using Steel IMRF's and OMRF's are permitted to a height of 35 ft. where the
total dead weight of the floors, walls and roof do not exceed 35 psf. or for single -
story buildings where the moment joints of field connections are constructed of
bolted end plates and the dead load of the roof does not exceed 15 psf the height
is permitted to be increased to 60 ft.
62 Steel ordinary braced frames are permitted in penthouse structures and in other one-story
buildings or structures where the total dead weight of the roof does not exceed 15
psf, and the height of the building or structure does not exceed 60 feet.
Total height of the building including cantilevered columns.
Prohibited in Seismic Zones 2A, 213, 3 and 4. See Section 1633.2.7.
8/8/2002
(tJ Section 1630.2.3.5 renumbered to Section 1630.2.3.4
Section 1630.2.3.4 is renumbered as Section 1630.2.3.5.
(g) Section 1630.2.3.4 added —New section on Horizontal Distribution.
A new Section 1630.2.3.4 is added to read:
1630.2.3.4 Horizontal Distribution. Diaphragms constructed of untopped steel
decking or wood structural panels or similar light -frame construction are permitted
to be considered as flexible.
(h) Section 1630.4.2 amended —Vertical Combinations.
A sentence is added to the end of the last paragraph to read:
This ratio shall not be taken less than
1.0
(i) Section 1630.7 amended —Horizontal Torsional Moments.
Section 1630.7 is amended to read as follows:
1630.7 Horizontal Torsional Moments. Provisions shall be made for the increased
shears resulting from horizontal torsion where diaphragms are not fl
exible. The
most severe load combination for each element shall be considered for design.
The torsional design moment at a given story shall be the moment resulting
from eccentricities between applied design lateral forces at levels above that story
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and the vertical -resisting elements in that story plus an accidental torsion.
The accidental torsional moment shall be determined by assuming the mass
is displaced as required by Section 1630.6.
Where torsional irregularity exists, as defined in Table 16-M, the effects
shall be accounted for by increasing the accidental torsion at each level by an
amplification factor, A,, determined from the following formula:
A x — 0 max 1 � (30-16)I .2 (Savg J
WHERE:
S x =the average of the story drift -at the extreme points of the structure at Level x.
S � = the maximum displacement story drift -at Level x.
The value of Ax need not exceed 3.0.
(j) Section 1630.8.2.1 amended —General.
Section 1630.8.2.1 is amended to read as follows:
1630.8.2.1 General. Where any portion of the lateral -load -resisting system is
discontinuous, such as for vertical irregularity Type 4 in Table 16-L or plan
irregularity Type 4 in Table 16-M, columns, beams, trusses or slabs support
ing such
discontinuous systems shall have the design strength to resist the combination loads
resulting from the special seismic load combinations of Section 1612.4. The
Connections of such discontinued elements to the supporting members shall be
adequate to tran
to be designed.
smit the forces for which the discontinuous elements were required
EXCEPTIONS: 1. The quantity Em in Section 1612.4 need not
exceed the maximum force that can be transferred to the element by the
lateral -force -resisting system.
2. Concrete slabs supporting light -frame wood shear wall systems
or light -frame steel and wood structural panel shear wall systems.
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For Allowable Stress Design, the design strength may be determined using
an allowable stress increase of 1.7 and a resistance factor, T. of 1.0. This increase
shalI not be combined with the one-third stress increase permitted by Section
1612.3, but may be combined with the duration of load increase permitted in
Chapter 23, Division 111.
(k) Section 1630.8.2 amended —Detailing Requirements in Seismic Zones 3 and 4.
Section 1630.8.2.2 is amended to read as follows:
1630.8.2.2 Detailing requirements in Seismic Zones 3 and 4. In Seismic Zones
3 and 4, elements supporting discontinuous systems shall meet the following
detailing or member limitations:
1. Reinforced concrete or reinforced masonry elements designed primarily
as axial -load members shall comply with Section 1921.4.4.5.
2. Reinforced concrete elements designed primarily as flexural members and
supporting other than light -frame wood shear wall systems or light -frame steel and
wood structural panel shear wall systems shall comply with Sections 1921.3.2 and
1921.3.3. Strength computations for portions of slabs designed as supporting
elements shall include only those portions of the slab that comply with the
requirements of these Sections.
3. Masonry elements designed primarily as axial -load carrying members
shall comply with Sections 2106.1.12.4, Item 1, and 2108.2.6.2.6.
4. Masonry elements designed primarily as flexural members shall comply
with Section 2108.2.6.2.5,
5. Steel elements designed primarily as flexural members or trusses shall
have bracing for both top and bottom beam flan
ges or chords at the location of the
support
of the discontinuous system and shall comply with the requirements of
AINC-Seismic Part
I, Section 9.4b.
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(1) Section 1630.10.2 amended — Calculated.
Section 16-30, 102 is amended to read as follows:
1630.10.2 Calculated. Calculated story drift using OM shall not exceed 0.025 times
the story height for structures having a fundamental period of less than 0.5 second.
For structures having a fundamental period of 0.5 second or greater, the calculated
story drift shall not exceed 0.020/T " times the story height.
(Note: EXCEPTIONS remain unchanged)
(m) Section 1630.10.3 amended —Limitations.
Section 1630.10.3 is amended to read as follows:
1630.10.3 Limitations. The design lateral forces used to determine the calculated
drift may disregard the limitations of Formula (30-6) and (30-7) (Errata Mar. 2001)
and may be based on the period determined from Formula (30-10) neglecting the
30 or 40 percent limitations of Section 1630.2.2, Item 2.
(n) Section 1633.2.4 amended —Deformation Compatibility.
Section 163 3.2.4
is amended to read as follows:
1633.2.4 Deformation compatibility. All structural framing elements and their
connections, not required by design to be part of the lateral -force -resisting system,
shall be designed and/or detailed to be adequate to maintain support of design dead
plus live loads when subjected to the expected deformations caused by seismic
forces. P4 effects on such elements shall be considered. Expected deformations
shall be determined as the greater of the Maximum Inelastic Response
Displacement, AM, considering Pd effects determined in accordance with Section
1630.9.2 or the deformation induced by a story drift of 0.0025 times the story
height. When computing expected deformations, the stiffening effect of those
elements not part of the lateral -force -resisting system shall be neglected.
For elements not part
of the lateral -force -resisting system, the forces
8/8/2002 17
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induced by the expected deformation may be considered as ultimate or factored
forces. When computing the forces induced by expected deformations, the
restraining effect of adjoining rigid structures and nonstructural elements shall be
considered and a rational value of member and restraint stiffness shall be used.
Inelastic deformations ofinembers and connections arepermitted to occur, provided
the assumed calculated capacities are consistent with member and connection
design and detailing.
(o) Section 1915.2.2 amended —Loads and Reactions.
Section 1915.2.2 is amended to read as follows:
1915.2.2 Base area of footing or number and arrangement of piles shall be
determined from the external forces and moments (transmitted by footing to soil or
piI
es) and permissible soil pressure or permissible pile capacity selected through
principles of soil mechanics. External forces and moments are those resulting from
the load combinations of Section 1612.3.
(p) Section 2204.1 amended
—Load and
Resistance Factor
Design
Section 2204.1 is amended by
deleting the
last sentence.
end of the first sentence.
(q) Section 2204.2 amended —Allowable Stress Design.
Section 2204.2 is amended by deleting the last sentence.
(r) Section 2205.3 amended
—Seismic Design Provisions
for
Structural Steel.
Section 2205.3 is amended by
deleting the words "or V" at
the
end of the first sentence.
(s) Division IV of Chapter 22 amended —Seismic Provisions for Structural Steel
Buildings.
The subtitle of Division IV is amended to read as follows:
8/8/2002
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Based on Seismic Provisions for Structural Steel Buildings of the
American Institute of Steel Construction. Parts I and III, dated April
15,1997 and Supplement No. 2, dated November 10, 2000
(t) Section 2210 amended —Adoption.
Section 2210 is amended to read as follows:
SECTION 2210 —ADOPTION
Except for the modifications set forth in Sections 2211 and 2212 of
this division and the requirements of this Code, the seismic design,
fabrication, and erection of structural steel buildings shall be in accordance
with the Seismic Provisions for Structural Steel Buildings, April 15, 1997
published by the American Institute of Steel Construction, 1 East Wacker
Drive, Suite 3100, Chicago, IL 60601, as if set out at length herein. The
adoption of Structural Provisions for Structural Steel Buildings in this
Division , hereinafter referred to as AISC-Seismic, shall include Parts I
(LRFD), and III (ASD), and Supplement No. 2, dated November 10, 2000.
Where other codes, standards, or specifications are referred to in this
specification, they are to be considered as only an indication of an
acceptable
method or material that can be used with the approval of the Building
Official.
(u) Section 2211 amended --Design Methods.
Section 2211 is amended to read as follows:
SECTION 2211— DESIGN METHODS
When the load combinations fr
om Section 1612.2 for LRFD are used,
structural steel buildings shall be designed in accordance with Chapter 22
Division II (AISC-LRFD) and Part I of AISC-Seismic as modified by this
Division.
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8/8/2002
When the load combinations from Section 1612.3 for ASD are used,
structural steel buildings shall be designed in accordance with Chapter 22
Division III (AISC-ASD) and Part III of AISC-Seismic as modified by this
Division.
(v) Section 221.2 amended -- General.
Section 2212 is amended to read as follows:
SECTION 2212 —AMENDMENTS
The AISC-Seismic adopted by this Division apply to the seismic
design of structural steel members except as modified by this Section.
The following terms that appear in AISC-Seismic shall be taken as
indicated in the 1997 Uniform Building Code:
AISC Seismic
Seismic Force Resisting System
Design Earthquake
Load Combinations Eqs. (4-1) and (4-2)
LRFD Specification Sections Eqs. (A4-
1)through
oQE
1997 Uniform Building Code
Lateral Force Resisting System
Design Basis Ground Motion
Chapter 16 Eqs. (12-17) and (12-18)
respectively
Chapter 16 Eqs. (12-1) through (12-6)
respectively
Em
1. Part I, Sec. 1 of the AISC Seismic Provisions is revised as follows:
1. SCOPE
These provisions are intended for the design and construction of
structural steel members and connections in the Seismic Force Resisting
Systems in buildings for which the design forces resulting from eart
hquake
motions have been determined on the basis of various levels of energy
dissipation in the inelastic range of response. These provisions shall apply
to buildings in Seismic Zone 2 with an importance factor I greater than one,
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in Seismic Zone 3 and 4 or when required by the Engineer of Record.
These provisions shall be applied in conjunction with, Chapter 22,
Division II, hereinafter referred to as the LRFD Specification. All members
and connections in the Lateral Force Resisting System shall have a design
strength as provided in the LRFD Specification to resist load combinations
12-1 through 12-6 (in Chapter 16) and shall meet the requirements in these
provisions.
Part I includes a Glossary, which is specifically applicable to this Part,
and Appendix S.
2. Part I, Sec. 4.1, first paragraph of the AISC Seismic Provisions is revised as
follows:
4.1 Loads and Load Combinations
The loads and load combinations shall those in Section 1612.2 except
as modified throughout these provisions.
(w) Chapter 23, Division III amended —Design Specifications for Allowable
Stress Design of Wood Buildings.
The introduction to Chapter 23, Division III Part I -ALLOWABLE STRESS DESIGN
OF WOOD is amended to read:
8/8/2002
Division III -DESIGN SPECIFICATIONS FOR ALLOWABLE
STRESS DESIGN OF WOOD BUILDIN
GS
Part I -ALLOWABLE STRESS DESIGN OF WOOD
This standard, with certain exceptions, is the ANSI/NFoPA NDS -97
National Design Specification for Wood Construction of the American
Forest and Paper Association, 1997 Edition, and the Supplement to the
1997 Edition, National Design Specification, adopted by reference.
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NDS".
The National Design Specification for Wood Construction, 1997
Edition, and supplement are available from the American Forest and Paper
Association, 1111 19th Street, NW, Eighth Floor, Washington, DC, 20036.
(%) Secfion 2316 amended —Design Specifications.
Section 2316 is amended by replacing the phrase "revised 1991" with"1977 Edition
(y) Section 2316.2 Amendments Delete Reference and Accompanying Table
Section 2316.2 is amended by deleting Item 27 NDS Supplement and accompanying
Table SA
(z) Section 2320.11.3 amended —Conventional Construction Provisions
(Bracing) Item 5 Deleted.
Section 2320.11.3, Item 5 (gypsum board bracing) is deleted.
(aa) Section 2320.11.3 amended —Conventional Construction Provisions
(Bracing) Item 7.
Section 2320.11.3, Item 7 is amended to read as follows:
7. Port
of Group R-3 an
land cement
plaster on studs spaced 16
inches
on center
installed in
accordance with
Table No.
25-1. Limited to one
story
structures
d U-1 occupancies.
Section 6. Section 18.09.010 is amended to read as follows:
18.09.010 Adoption of Uniform Mechanical Code.
The rules, regulations and standards printed in one volume and published by the
International Conference of Building Officials under the title "1997 Uniform Mechanical
Code" and adopted as the "2001 California Mechanical Code," including the appendices and
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State of California amendments thereto, hereinafter called "mechanical code," is adopted as
and for the rules, regulations and standards within this city as to all matters therein contained,
except as otherwise provided in this chapter. The appendices to the mechanical code shall
be enforceable to the same extent as if contained in the body of the code.
Section 7. Chapter 18.12 is amended to read as follows:
Chapter 18.12
PLUMBING CODE
18.12.010
A1997 Uniform Plumbing Code" and adopted as the "Californ
Adoption of Uniform Plumbing Code.
18.12.020
Appeals.
18.12.025
Subsection 311.9 added — Prohibited fittings and practices.
18.12.030
Section 510.7 amended — Water heater safety pans.
18.12.035
Section 604.1 amended — Materials.
18.12.040
Section 604.11 added — PEX.
18.12.050
Section 605.3.1 added — Water supply shutoff valves.
18.12.060
Section 609.3 amended — Water piping installed in or under a concrete
slab.
18.12.070
Section 610.8.1 added — Water service over two inches.
18.12.080
Section 710.1 amended — Drainage piping below main sewer level.
18.12.090
Section 719.7 added — Building sewer clean-out.
18.12.100
Section 807.2 amended — Condensate waste water disposal.
18.12.110
Disposal of rainwater drainage.
18.12.115
Rainwater drainage to paved gutter.
18.12.120
Rainwater drainage across public sidewalk prohibited.
18.12.125
Elimination of existing rainwater drainage required.
18.12.010
Adoption of Uniform Plumbing Code.
The
rules, regulations and standards printed in one volume and published by the
International Association of Plumbing and Mechanical Officials (IAPMO), under the title
ia Plumbing Code, 2001
Edition," including the appendices A and D, and State of California amendments thereto,
hereinafter called "plumbing code," is adopted as and for the rules, regulations and standards
within this city as to all matters therein contained, except as otherwise provided in this
chapter. The appendices specified herein shall be enforceable to the same extent as if
contained in the body of the plumbing code.
18.12.020
7/30/2002
Appeals.
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An appeal of a denial of or a refusal to issue a permit or from any other decision of
the building official may be taken as set forth in section 18.07.040.
18.12.025 Section 311.9 added -Prohibited Tittings and practices.
Section 311.9 is added to read as follows:
311.9 Exterior Pipes. No plumbing drain vent pipe nor water, soil, waste,
or gas pipe shall be installed on, or attached to, the outside face of an exterior
wall of a residential building without the prior written permission of the
building official. Such installation shall be enclosed in such a way as to be
obscured from view.
18.12.030 Section 510.7 amended -Water heater safety pans.
Section 510.7 is amended to read as follows:
510.7 Each water heater located in an attic, furred space, living area or other
location where leakage would result in damage to the building or its contents
shall have a safety pan with drain. Safety pans shall be metal and be nominal
two inches in diameter larger than the water heater, with a minimum depth
oftwo inches. The drain pipe shall bethree-quarter
inch trade size minimum;
shall terminate outside the building foundation or, where this is not practical
or possible, at an
other location approved by the building inspector; and shall
have a continuous minimum slope throughout its length of one-quarter inch,
per foot away fr
om the water heater.
I 18.12.035 Section 604.1 amended -Materials.
Section 604.1 is amended to read as follows:
7/30/2002
604.1 Water distribution pipe, building supply water pipe and fittings shall
be of brass, copper, cast iron, galvanized malleable iron, galvanized wrought
on, galvanized steel, or other approved materials. Asbestos -cement, CPVC,
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PE, PVC, or PEX water pipe manufactured to recognized standards may be
used for cold water distribution systems outside a building. CPVC, PEX
water pipe, tubing, and fittings, manufactured to recognized standards may
be used for hot and cold water distribution systems within a building. All
materials used in the water supply system, except valves and similar devices
shall be of a like material, except where otherwise approved by the Building
Official.
18.12.040 Section 604.11 added-PEX.
Section 604.11 is added to read as follows:
604.11 PEX. Cross-linked polyethylene (PEX) tubing shall be marked with
the appropriate standard designation(s) listed in Table 14-1 for which the
tubing has been listed or approved. PEX tubing shall be installed in
compliance with the provisions of this section.
604.11.1PEXFittings. Metal Insert Fittings and Metal Compression
Fittings used with PEX tubing shall be manufactured to and marked
in accordance with the standards for the fittings in Table 14-1.
604.11.2 Water Heater Connections. PEX tubing shall not be
installed within the first eighteen (18) inches (457 mm) of piping
connected to a water heater.
18.12.050 Section 605.3 amended -Water supply shutoff valves.
Section 605.3 is amended to read as follows:
7/30/2002
605.3 Agate shutoff valve shall be installed on each water supply pipe at an
accessible point where such supply enters abuilding. In multi -unit residential
buildings, a gate shutoff valve shall be installed on each water supply pipe at
an accessible point where such supply enters each apartment or dwelling unit;
or, where an apartment or dwelling unit is supplied by a vertical riser, a
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separate accessible shutoff valve may be provided at each plumbing fixture
in the unit in lieu of the shutoff valve on the main supply to the unit.
18.12.060 Section 609.3 amended -Water piping installed in or under a concrete
slab.
The first paragraph of Section 609.3 is amended to read as follows:
Water piping shall not be installed in or under a concrete floor slab within a
building without prior written approval of the building official. When such
approval is obtained, such piping shall be installed in accordance with the
following requirements:
18.12.070 Section 610.8.1 added -Water services over two inches.
Anew subsection 610.8.1 is added to read as follows:
610.8.1 Water Services
Over 2
inches.
Design details,
methods
and
materials for construction
of water
services
over 2 inches in
diameter
shall
conform with the specifications for the construction of such work as
compIled by the city engineer. These specifications maybe changed fr
om
time to time at the option of the city engineer, but such changes shall in no
way effect the validity of the regulations or requirements contained therein
or the regulations and requirements of this code.
18.12.080 Section 710.1 amended -Drainage piping below main sewer level.
Section 710.1 is amended to read as follows:
710.1 Drainage piping serving fixture(s) which have flood level rim(s)
7/30/2002
less
than twelve inches above the elevation of the next upstream manhole and/or
flushing inlet cover at the public sewer system serving such drainage piping
shalI be protected from backflow of sewage by the installation of a backwater
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valve approved by the building official. Fixtures above such elevation shall
not discharge through the backwater valve without prior written approval of
the building official.
18.12.090 Section 719.7 added -Building sewer clean-out.
A new section 719.7 is added to read as follows:
719.7 When a building sewer is located under a street, alley or easement,
there shall beprovided a cleanout, installed flush with the sidewalk level next
to curb; or, if no curb or sidewalk exist, then the cleanout must be located
outside of the lot line. The cleanout riser shall be of materials specified by
the city engineer, shall be the
same size as the
drain it
serves,
shall
be
connected to the building drain
by a wye, shall be
brought
up to the
level
of
the ground, and shall be terminated at the top with a cleanout fitting as
specified by the city engineer. If the riser terminates at concrete sidewalk a
cast iron sidewalk box with loose cover fitting with brass screws shall be
installed. The minimum size for a cleanout riser shall be four inch trade size
pipe.
18.12.100 Section 807.2 amended -Condensate waste water disposal.
Section 807.2 is amended to read as follows:
807.2 Condensate from air cooling coils and comfort
cooling equipment not
intended to be used for the storage or handling of food or drink shall be
coll
ected and discharged to a storm sewer or other point of disposal approved
by the building official.
Termination of such drains shall be made by an air break. Condensate
drain lines in sizes of one and one-quarter inch and larger shall be assembled
using approved drainage pipe and fittings.
Condensate waste water shall not drain over or upon a sidewalk,
7/30/2002OWN
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pedestrian ramp or the like, or a public way.
18. 12.110 Disposal of rainwater drainage.
Rainwater from roof or other approved areas exposed to rainwater maybe drained
into the storm dra nage system, but shall not drain into any sewer intended for sanitary
sewage.
18.12.115 Rainwater drainage to paved gutter.
Rainwater from roofs and other approved areas exposed to rainwater may drain into
apublic street gutter, provided that such gutter is paved and runs to a catch basin connected
to a public storm drain, and provided further that such drainage has the approval of the city
engineer or other public authority having jurisdiction over public streets or public storm
drains.
18.12.120 Rainwater drainage across public sidewalk prohibited.
No rainwater fr
om roofs, or other rainwater drainage of premises, shall discharge
upon apublic sidewalk. When it is desired to conduct rainwater fr
om a building or premises
to apublic street gutter, the outside underground drainage piping shall be vitrified clay pipe,
ABS, PVC, galvanized wrought iron pipe, galvanized steel pipe, approved concrete pipe,
asbestos cement sewer pipe, cast iron pipe or other materials approved by the building
official. When clay pipe, ABS, PVC, asbestos cement sewer pipe or approved concrete pipe
is used, such pipe shall bean imi'murn of two feet horizontally from the building and one foot
below the official grade. Water leaders connected to such background drainage pipe which
are on the outside of the building wall that abuts on a public thoroughfare, shall be
constructed of galvanized wrought iron pipe, galvanized steel pipe, or cast iron pipe for a
distance of not less than five feet vertically above the Official grade. See Section
18.08.0100) for exception for such drainage in R-1 districts.
7/30/2002
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18.12.125 Elimination of nonconforming rainwater drainage required.
Every existing drainage of rainwater into a sanitary sewer in violation of the
provisions of this chapter shall be altered or terminated or replaced so as to conform to the
provisions of this chapter.
Section 8. Chapter 18.16 is amended to read as follows:
Chapter 18.16
ELECTRICAL CODE
18.16.010 Adoption of National Electrical Code.
18.16.020 Section 230-70(A) amended — Main switch accessible from exterior.
18.16.030 Exterior lighting restricted.
18.16.010 Adoption of National Electrical Code.
The rules, regulations and standards printed in one volume and published by the National Eire
Protection Association under the title "National Electrical Code, 2002 Edition" with amendments as
contained in the "2001 California Electrical Code", including the appendices, and the Uniform
Administrative Code Provisions (I.C.B.O.) of said code, are adopted as and for the rules, regulations
and standards within this city as to matters therein contained except as provided in this chapter. The
mandatory requirements of the appendices to the code shall be enforceable to the same extent as if
contained in the body of the code. Article 80 is expressly not adopted.
18.16.020 Section 230.70(A)(1) amended -Main switch accessible from exterior.
Section 230.70(A)(1) is amended to read as follows:
(1) Main Switch Location. The main switch location shall be accessible fr
7/30/2002
om the
exterior of a building. If, due to structural or architectural conditions, it is not possible
to make the main switch accessible from the building exterior a shunt trip
disconnecting all active electrical conductors shall be installed at an accessible exterior
location.
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18.16.030 Exterior lighting restricted.
(a) Exterior lighting on all residential and commercial properties shall be designed and
located so that the cone of light and/or glare from the lighting element is kept entirely on the property
or below the top of any fence, edge or wall.
(b) On all residential properties exterior lighting outlets and fixtures shall not be located
more than nine (9) feet above adjacent grade or required landing; walls or portions of walls shall not
be floodlit; only shielded light fixtures which focus light downward shall be allowed, except for
illuminated street numbers required by the fire department.
(c) Variances to the provisions of this section may be approved by the planning
commission, pursuant to the provisions of Chapter 25.16 of this code, except that notice of the
application for the variance shall only be given to property owners within fifty feet.
(d) This section shall not apply to signs having an approved permit for an illuminated sign
pursuant to Title 22 of this code.
Section 9. This ordinance shall be published as required by law.
I, ANN T. MUSSO, City Clerk of the City of Burlingame, do hereby certify that the foregoing
ordinance was introduced at a regular meeting of the City Council held on the 5"' day of August, 2002,
and adopted thereafter at a regular meeting of the City Council held on the 3 rd day of September, 2002,
by the following vote:
AYES: COUNCILMEMBERS: BAYLOCK, COFFEY, GALLIGAN, JANNEY, O'MAHONY
NOES: COUNCILMEMBERS: NONE
ABSENT: COUNCILMEMBERS: NONE
S:\Ordinances\ord1694.ord.wpd
7/30/2002
{ r
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