ORDINANCE 1597ORDINANCE NO. 1597
AN ORDINANCE ADOPTING THE CALIFORNIA RESIDENTIAL
CODE, 2019 EDITION ("CRC") AND AMENDING THE CRC
BASED UPON LOCAL CLIMATIC, TOPOGRAPHIC, AND
GEOLOGICAL CONDITIONS; AND AMENDING THE EL
SEGUNDO MUNICIPAL CODE TO REFLECT SUCH CHANGES.
The City Council of the city of EI Segundo does ordain as follows:
SECTION 1: Findings. The City Council finds and declares as follows:
A, The City may adopt model codes by reference pursuant to Government
Code §§ 50022.2, et seq.;
B. Health and Safety Code § 17958 requires the City to adopt certain codes
that are set forth in Health and Safety Code § 17922 and published in the
California Code of Regulations;
C. Notice of public hearing to consider the adoption of the codes was published
pursuant to Government Code § 6066 and a duly noticed public hearing
was held on November 19, 2019, regarding the adoption of the Codes;
D. Pursuant to § 50022.6 of the Government Code, at least one copy of all
codes adopted by reference were filed with the City Clerk of the City and
were available for public inspection for at least fifteen (15) days preceding
the date of the hearing;
E. Pursuant to Health and Safety Code § 17958.7, it is in the public interest to
adopt the 2019 California Residential Code ("CRC") with the changes set
forth in this Ordinance;
F. Pursuant to the requirements of Health and Safety Code § 17958.7, the City
Council finds that there are local geological conditions justifying the CRC
amendments set forth below;
G. The City of EI Segundo and the greater Los Angeles region is a densely
populated area having buildings and structures constructed over and near
a vast array of fault systems capable of producing major earthquakes
including, without limitation, to the 1994 Northridge Earthquake. The
proposed modifications emphasize that the design concern is for seismic -
force -resisting elements and therefore need to be incorporated into the CRC
to ensure that new buildings and structures, including block wall and
concrete fences over 42" high, and additions or alterations to existing
buildings or structures are designed and constructed in accordance with the
scope and objectives of the International Building Code. Experts predict a
major earthquake in Southern California within the next 50 years. This
situation creates the need for both additional fire protection measures and
automatic on-site fire protection of building occupants since a multitude of
fires may result from breakage of gas and electric lines because of an
earthquake. After due consideration, the City Council finds and determines
that due to local climatic, geological, or topographical conditions, the
structural and fire protection amendments to the CRC are necessary to give
buildings a reasonable degree of structural integrity and fire life safety to
help protect public health and safety in the event of a seismic event;
H. Additional amendments have been made to Codes are found to be either
administrative or procedural in nature or concern themselves with subjects
not covered in such Codes. The changes made include provisions making
each of said Codes compatible with other Codes enforced by the City;
The specific amendments of the CRC that fulfill these requirements are:
1. Amend CRC § R105.2 Work exempt from permit
2. Amend CRC § R105.3.2 Expiration of Plan Check
3. Amend CRC § R105.5 Expiration of Permits
4. Amend CRC § R105.8 Responsibility of permittee
5. Add CRC § R108.5.1 Plan Check fee refund
6. Add CRC § R108.5.2 Permit fee refund
7. Amend CRC § R108.6 Work commencing before permit issuance.
8. Add CRC § R109.1.7 Survey certification
9. Add CRC § R109.5 Re -inspections
10. Amend CRC § R112.3 Board of appeals
11. Amend CRC § R301.1.3.2 Wood frame Structures
12. Add CRC Section § R301.1.4 Slopes Steeper Than 33%
13. Amend CRC § R301.2.2.6 Irregular Buildings
14.Add CRC § R301.2.2.11 Anchorage of Equipment
15.Add CRC § R341: Residential Noise Insulation Standards
16. Amend CRC § R401.1 Foundation Application
17. Amend CRC § R403.1, R403.1.3.6, R403.1.5 General Footings
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18.Amend CRC § R404.2 Wood Foundation Walls
19. Amend CRC § R501.1 Application
20.Add CRC § R503.2.4 Openings In Horizontal Diaphragms
21. Amend CRC Table R602.3(1) Fastener Schedule
22. Amend CRC § R602.3.2 and Table R602.3.2 Top Plate
23. Amend CRC Table R602.3(2) Alternate Attachments to Table R602.3(1)
24.Amend CRC § R602.10.2.3 Minimum Number of Braced Wall Panels
25.Amend CRC Table R602.10.3(3) Bracing Requirements Based on Seismic
Design Category
26. Amend CRC Table R602.10.4 Bracing Methods
27. Amend CRC Table R602.10.5 Minimum Length of Braced Wall Panels
28. Amend CRC Figure R602.10.6.1 Method ABW - Alternate Braced Wall
Panel
29. Amend CRC Figure R602.10.6.2 Method PFH - Portal Frame with Hold-
downs at Detached Garage Door Openings
30.Amend CRC Figure R602.10.6.4 Method CS -PF - Continuously Sheathed
Portal Framed Construction
31. Amend CRC § R606.4.4 Parapet Walls
32.Amend CRC § R606.12.2.2.3 Reinforcement Requirements for Masonry
Elements
33.Add CRC § R803.2.4 Openings in Horizontal Diaphragms
34. Amend CRC § R905.3.1 Deck Requirements
35.Amend CRC § R1001.3.1 Vertical Reinforcing
SECTION 2: Title 13, Chapter 2 of the EI Segundo Municipal Code ("ESMC") is
amended in its entirety to read as follows:
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"CHAPTER 2
RESIDENTIAL CODE
Section 13-1-1: ADOPTION OF CALIFORNIA RESIDENTIAL CODE,
2019 EDITION.
Pursuant to California Government Code § 50022.2, the California
Residential Code, 2019 Edition, published at Title 24, Part 2.5, of the
California Code of Regulations, and Appendix J of the California Residential
Code, 2019 Edition, published at Title 24, Part 2.5, of the California Code
of Regulations are adopted by reference, subject to the amendments,
additions and deletions set forth below. One true copy of the CRC is on file
in the office of the Building Official and is available for public inspection as
required by law".
Section 13-2-2: AMENDMENTS TO THE CALIFORNIA
RESIDENTIAL CODE.
Subsection 11 is added to § R105.2 of the CRC:
R105.2 Work exempt from permit.
Building
11. Block wall and concrete fences not over 3 feet 6 inches high.
Section R105.3.2 of the CRC is hereby amended to read as follows:
R105.3.2 Expiration of Plan Check.
An application for a permit for any proposed work is deemed to have been
abandoned 12 months after the application date. Unless otherwise
provided, after expiration of the application, the City will not issue a permit
until the plans are rechecked and approved and a new fee is paid.
Exception: The Building Official may grant extensions of time for
additional periods not exceeding 90 days each if a permit applicant
submits in writing sufficient evidence that unusual conditions or
circumstances precluded the securing of the permit within the allocated
time.
Section R105.5 of Chapter 1 of the CRC is hereby amended to read as follows:
R105.5 Expiration of Permits.
Every permit issued shall become invalid unless the work on the site
authorized by such permit is commenced within 12 months after its
issuance, or if the work authorized on the site by such permit is suspended
or abandoned for a period of 180 days after the time the work is
commenced. Work shall be considered suspended or abandoned if the
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building official determines that substantial work has not been performed
within the time specified above. Substantial work shall be constructed to
mean:
1. Measurable work such as, but not limited to, the addition of footings,
structural members, flooring, wall covering, etc.
Before such work can be recommenced, a new permit shall be first obtained
to do so, and the fee therefore shall be one half the amount required for a
new permit for such work, provided no changes have been made or will be
made in the original plans and specifications for such work, and provided
further that such suspension or abandonment has not exceeded one year.
In order to renew action on a permit after expiration, the permittee shall pay
a new permit fee and may be required to comply with all applicable new
regulations at the time of issuance. The building official is authorized to
grant, in writing, one or more extensions of time, for periods not more than
180 days each. The extension shall be requested in writing and justifiable
cause demonstrated. Except as otherwise provided, every permit issued
by the City is valid for a period of three (3) years.
Exception: The Building Official may grant extensions of time if a
permit applicant submits in writing sufficient evidence that unusual
conditions or circumstances precluded from the work being
completed. An extension of time may require conditions of approval
and additional fees.
Section R105.8 of Chapter 1 of the CRC is added to read as follows:
R105.8 Responsibility of permittee.
Building permits shall be presumed by the city to incorporate all the work
that the applicant, the applicant's agent, employees and/or contractors shall
carry out. Said proposed work shall be in accordance with the approved
plans and with all requirements of this code and any other laws or
regulations applicable thereto. No city approval shall relieve or exonerate
any person from the responsibility of complying with the provisions of this
code nor shall any vested rights be created for any work performed in
violation of this code.
Section R109.5.1 of Chapter 1 of the CRC is added to read as follows:
R108.5.1 Plan check fees refund.
No portion of the plan check fee shall be refunded unless plan review has
not been performed, in which case 80 percent of the plan check fee shall
be refunded upon written application for refund submitted by the person who
made original payment of such fee and with the written consent of the owner
of the real property on which the work was proposed to be done. The
Building Official shall determine, in such official's discretion, whether an
applicant is qualified to receive a refund. After 180 days have elapsed from
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the date of the submittal for plan check, no plan check fees shall be
refunded. In the event subsequent application for plan check is made by a
person who has received a refund, the full amount of all required fees shall
be paid as elsewhere provided in this chapter.
Section R105.5.2 of Chapter 1 of the CRC is added to read as follows:
R108.5.2 Permit fees refund.
In the event any person shall have obtained a building permit and no portion
of the work or construction covered by such permit shall have commenced,
nor any inspection performed by any City employee, and notice of
abandonment has been received from the owner of the real property on
which such work would have been performed, the permittee, upon
presentation to the Building Official of a written request for refund, shall be
entitled to a refund in an amount equal to 80 percent of the building permit
fee actually paid for such permit. The Building Official shall determine, in
such official's discretion, whether an applicant is qualified to receive a
refund. After 12 months have elapsed from the date of the issuance of the
permit, no permit fees shall be refunded. In the event subsequent
application for a permit is made by a person who has received a refund, the
full amount of all required fees shall be paid as elsewhere provided in this
chapter.
Exception:
1. If a permit has been issued for a project located in an area outside
the jurisdiction of the City, 100 percent of the permit and plan
checking fee may be refunded.
2. If a duplicate permit has been erroneously issued, 100 percent of
the duplicated permit and plan checking fee may be refunded.
Section R108.6 of Chapter 1 of the CRC is amended to read as follows:
R108.6 Work commencing before permit issuance.
Any person who commences any work on a building, structure, electrical,
gas, mechanical or plumbing system before obtaining the necessary
permits shall be subject to a fee in addition to the normally established
permit fee, equal to 100% of such normally established permit fee, or as
otherwise determined by the building official.
Section R109.1.7 of Chapter 1 of the CRC is added to read as follows:
R109.1.7 Setback Certification required.
A California State licensed surveyor is required to certify the location and
setbacks of all new construction prior to the first foundation inspection. A
copy of the certification shall be available to the Building Division inspector
for the job file prior to the first inspection.
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Exception: Wherever there are practical difficulties involved in
carrying out the provisions of this section, the Building Official shall
have the authority to grant modifications for individual cases.
Section R109.5 of Chapter 1 of the CRC is hereby added to read as follows:
R109.5 Re -inspections.
A re -inspection fee in the amount set by the City Council resolution may be
assessed for each inspection or re -inspection when such portion of work for
which inspection is called is incomplete or when required corrections called
are not made. This section is not to be interpreted as requiring re -inspection
fees the first time a job is rejected for failure to comply with the requirements
of this code, but as controlling the practice of calling for inspections before
the job is ready for such inspection or re -inspection. Re -inspection fees
may be assessed when the inspection record card is not posted or
otherwise available on the work site, the approved plans are not readily
available to the inspector, for failure to provide access on the date for which
inspection is requested, or for deviating from plans requiring the approval
of the building official. In instances where re -inspection fees have been
assessed, no additional inspection of the work will be performed until
required fees have been paid.
Section R112.3 of Chapter 1 of the CRC is hereby added to read as follows:
R112.3 Board of Appeals.
The board of appeals consists of members of the Planning Commission.
The term of a board of appeals member will coincide with the term of service
as a Planning Commissioner and will terminate should the member cease
serving as a Planning Commissioner. The building official is the secretary
to the board. The board may adopt reasonable rules and regulations for
conducting its investigations and will render all its decisions and findings on
contested matters, in writing to the building official, with a duplicate copy for
any appellant or contestant affected by such decision or finding, and may
recommend to the city council appropriate new legislation.
Three members of the board constitute a quorum. The Planning
Chairperson is the board's chairperson and in the chairperson's absence
the board will select a temporary chairperson. The city will assess a filing
fee set by City Council resolution, at the time that an appellant file appeal
of any order, decisions, or determination made by the building official
relative to the application and interpretation of this code. The filing fee is
refundable should the appellant prevail in a decision by the board. The
appeal must be taken by filing a written notice of appeal, in letterform, to the
board of appeals. The board's decision constitutes the city's final decision.
Section R301.1.3.2 of Chapter 3 of the CRC is amended to read as follows:
R301.1.3.2 Wood -frame structures.
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The building official shall require construction documents to be approved
and stamped by a California licensed architect or engineer for all dwellings
of wood -frame construction more than two stories and basement in height
located in Seismic Design Category A, B or C. Notwithstanding other
sections of law; the law establishing these provisions is found in Business
and Professions Code Section 5537 and 6737.1.
The building official shall require construction documents to be approved
and stamped by a California licensed architect or engineer for all dwellings
of wood -frame construction more than one story in height or with a
basement located in Seismic Design Category Do, D1, Dz or E.
Section R301.1.4 is added to Chapter 3 of the CRC to read as follows:
R301.1.4 Seismic design provisions for buildings constructed on or
into slopes steeper than one unit vertical in three units horizontal (33.3
percent slope).
The design and construction of new buildings and additions to existing
buildings when constructed on or into slopes steeper than one -unit vertical
in three units horizontal (33.3 percent slope) shall comply with Section
1613.9 of the Building Code.
Items 1, 3 and 5 of Section R301.2.2.2-.5 6 of the CRC are amended to read as
follows:
1. Shear wall or braced wall offsets out of plane. Conditions where exterior
shear wall lines or braced wall panels are not in one plane vertically from
the foundation to the uppermost story in which they are required.
3. Shear wall or braced wall offsets in plane. Conditions where the end of
a braced wall panel occurs over an opening in the wall below.
5. Floor level offset. Conditions where portions of a floor level are vertically
offset.
Section R301.2.2.11 is added to Chapter 3 of the CRC to read as follows:
R301.2.2.11 Anchorage of Mechanical, Electrical, or Plumbing
Components and Equipment.
Mechanical, electrical, or plumbing components and equipment shall be
anchored to the structure. Anchorage of the components and equipment
shall be designed to resist loads in accordance with the California
Residential Code and ASCE 7, except where the component is positively
attached to the structure and flexible connections are provided between the
component and associated ductwork, piping, and conduit; and either
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1. The component weighs 400 lbs. (1,780 N) or less and has a center
of mass located 4 ft. (1.22 m) or less above the supporting structure;
or
2. The component weighs 20 lbs. (89N) or less or, in the case of a
distributed system, 5 Ib/ft. (73 N/m) or less.
Section R341 is added to Chapter 3 of the CRC to read as follows:
R341 RESIDENTIAL NOISE INSULATION STANDARDS (Airport Noise
Sources)
R341.1207.6.01 Noise Insulation Requirements for New Construction,
R341.1207.6.02 Purpose and Scope.
The purpose of this section is to establish minimum noise insulation
performance standards for new residential dwelling units and additions of
habitable rooms to existing residential dwelling units to protect public health,
safety, and welfare from the effects of excessive noise, including without
limitation, indoor quality of life, speech interference, and sleep disruption.
R341.1207.6.03 Applicability.
This section applies to all newly constructed residences and habitable room
additions to existing residences.
R341.1207.6.04 Definitions.
For purposes of this section, the following words must have the following
meaning:
"Community Noise Equivalent Level (CNEL)" means the noise measure
defined in 21 Code of California Regulations § 5001(d), and any successor
regulation or amendment.
"Habitable Room" means a room that is a space in a structure for living,
sleeping, eating, or cooking. Bathrooms, toilet compartments, closets, halls,
storage or utility space, garages, and similar areas are not considered
habitable space.
"LAX" means Los Angeles International Airport.
"Noise Impact Boundary for LAX" means the area around LAX as defined
in 21 California code of regulations § 5001(1), and any successor regulation
or amendment. The city's building safety department must at all times
maintain a current map of the noise impact boundary. The latest published
map by LAWA located at the Building Safety Counter shall be used as the
basis for determination.
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"Residence" means any occupancy group R building as used in EI Segundo
Title 13 of the EI Segundo municipal code.
R341.1207.6.05 Standards.
Any new residence or addition of one or more habitable rooms to an existing
residence that is within the noise impact boundary for LAX must be
designed to ensure that internal noise levels due to LAX do not exceed 45
dB CNEL. This standard may be satisfied in two ways: (1) by performing
the acoustical analysis described in section R341.1207.6.06, below, or (2)
by employing the prescribed construction methods described in section
R341.1207.6.07, below.
R341.1207.6.06 Acoustical Analysis.
A building permit application for a new residence or addition of one or more
habitable rooms to an existing residence must comply with the minimum
noise insulation performance standards established in this section if it
includes an acoustical analysis demonstrating that the proposed design will
ensure that internal noise levels due to LAX aircraft noise will not exceed
45 dB CNEL. The acoustical analysis shall be proven to meet the standard
by providing post-construction/pre-occupancy acoustic measurement to
verify compliance with the 45 dB CNEL standard. The Building Official has
the discretion to implement policies that meet the intent of this code section.
A. The acoustical analysis must be prepared by a person
experienced in the field of acoustical engineering. The analysis must
consider and include: the topographical relationship between LAX
aircraft noise sources and the dwelling site, the characteristics of
those noise sources, predicted noise spectra and levels at the
exterior of the dwelling site, the basis for this prediction (measured
or obtained from published data), the noise insulation measures to
be employed, and the effectiveness of the proposed noise insulation
measures.
B. If the interior allowable noise levels are to be met by requiring that
windows be unopenable or closed, the design for the structure must
also specify a ventilation or air-conditioning system to provide a
habitable interior environment, having at least 2 air exchanges per
hour for the affected rooms. The ventilation system must not
compromise the interior room noise reduction.
R341.1207.6.07 Prescribed Construction Methods.
A building permit application for a new residence or addition of one or more
habitable rooms to an existing residence must comply with the minimum
noise insulation performance standards established in this section if the
design incorporates the following construction methods.
Construction Methods in the 70 dB CNEL and Greater Noise Zone
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R341.1207.6.08 Exterior Walls.
New walls that form the exterior portion of habitable rooms must be
constructed as follows:
A. Studs must be at least 4 inches in nominal depth.
B. Exterior finish must be stucco, min imum'/a-inch thickness, brick
veneer, masonry, or any siding material allowed by this code. Wood
or metal siding must be installed over 1/2 -inch minimum solid
sheathing.
C. Masonry walls with a surface weight of less than 40 pounds per
square foot must require an interior supporting stud -wall that is
finished with at least 5/8 -inch thick gypsum wall board or plaster.
D. Wall insulation must be at least R-11 glass fiber or mineral wool
and must be installed continuously throughout the stud space.
E. Exterior solid sheathing must be covered with overlapping asphalt
felt.
F. Interior wall finish must be at least 5/8 -inch thick gypsum wall board
or plaster.
R341.1207.6.09 Exterior Windows.
A. Openable Windows: All openable windows in the exterior walls of
habitable rooms must have a laboratory sound transmission class
rating of at least STC 40 dB and must have an air infiltration rate of
no more than 0.5 cubic feet per minute when tested according to
ASTM E-283.
B. Fixed Windows: All fixed windows in the exterior walls of habitable
rooms must:
1. Have a sound transmission class rating of at least STC 40
dB, or
2. Must be 5/8 -inch laminated glass with STC rating of 40 dB
and must be set in non -hardening glazing materials, or
3. Must be glass block at least 31/2 inches thick.
C. The total areas of glazing in rooms used for sleeping must not
exceed 20% of the wall area.
R341.1207.6.10 Exterior Doors.
A. Exterior hinged doors to habitable rooms that are directly exposed
to aircraft noise and are facing the source of the noise must be a door
and edge seal assembly that has a laboratory sound transmission
class of at least STC 40 dB.
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B. Exterior hinged doors to habitable rooms that are not directly
exposed to aircraft noise and do not face the source of the noise
must have a minimum STC rating of 35 dB.
C. Sliding glass doors in habitable rooms must not be allowed in
walls that are directly exposed to aircraft noise. Sliding glass doors
in walls that are not directly exposed must have an STC rating of at
least 40 dB.
D. Access doors from attached garage to the interior of a residence
must have an STC rating of at least 30 dB.
R341.1207.6.11 Roof/Ceiling Construction.
A. Roof rafters must have a minimum slope of 4:12 and must be
covered on their top surface with minimum 1/2 -inch solid sheathing
and any roof covering allowed by this code.
B. Attic insulation must be batt or blow-in glass fiber or mineral wool
with a minimum R-30 rating applied between the ceiling joists.
C. Attic ventilation must be:
1. Gable vents or vents that penetrate the roof surface that
are fitted with transfer ducts at least 6 feet in length that are
insulating flexible ducting or metal ducts containing internal 1 -
inch thick coated fiberglass sound absorbing duct liner. Each
duct must have a lined 90 -degree bend in the duct so that
there is no direct line of sight from the exterior through the
duct into the attic, or
2. Noise control louver vents, or
3. Eave vents that are located under the eave overhang.
4. Ceilings must be finished with gypsum board or plaster that
is at least 5/8 -inch thick. Ceiling materials must be mounted
on resilient channels.
5. Skylights must penetrate the ceiling by means of a
completely enclosed light well that extends from the roof
opening to the ceiling opening. A secondary openable glazing
panel must be mounted at the ceiling line or at any point that
provides at least a 4 -inch space between the skylight glazing
and the secondary glazing and must be glazed with at least
3/16 -inch plastic or laminated glass. The weather -side skylight
must be any type that is permitted by the building code. The
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size of skylights must be no more than 20 percent of the roof
area of the room.
R341.1207.6.12 Ventilation.
A. A ventilation system must be provided that will provide at least the
minimum air circulation and fresh air supply requirements of this
code in each habitable room without opening any window, door or
other opening to the exterior. All concealed ductwork must be
insulated flexible glass fiber ducting that is at least 10 feet long
between any two points of connection.
B. Kitchen cooktop vent hoods must be the non -ducted recirculating
type with no ducted connection to the exterior.
R341.1207.6.13 Fireplaces.
Each fireplace must be fitted with a damper at the top of the chimney that
is operated from the firebox and must have glass doors across the front of
the firebox.
R341.1207.6.14 Wall and Ceiling Openings.
Openings in the shell of the residence that degrade its ability to achieve an
interior CNEL rating of 45 dB or less when all doors and windows are closed
are prohibited unless access panels, pet doors, mail delivery drops, air-
conditioning, or other openings are designed to maintain the 45 dB CNEL
(or less) standard in the room to which they provide access.
Construction Methods In The 65 dB CNEL To 70 dB CNEL Noise Zone
R341.1207.6.15 Exterior Walls.
New walls that form the exterior portion of habitable rooms must be
constructed as follows:
A. Studs must be at least 4 inches in nominal depth.
B. Exterior finish must be stucco, minimum 7/8 -inch thickness, brick
veneer, masonry, or any siding material allowed by this code. Wood
or metal siding must be installed over 1/2 -inch solid sheathing.
C. Masonry walls with a surface weight of less than 40 pounds per
square foot will require an interior stud wall that is finished with at
least 5/8 -inch thick gypsum wallboard or plaster.
D. Wall insulation must be at least R-11 glass fiber or mineral wool
and must be installed continuously throughout the stud space.
E. Exterior solid sheathing must be covered with overlapping asphalt
felt.
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F. Interior wall finish must be at least 5/8 -inch thick gypsum wallboard
or plaster.
R341.1207.6.16 Exterior Windows.
A. Openable Windows: All openable windows in the exterior walls of
habitable rooms must have a laboratory sound transmission class
rating of at least STC 35 dB and must have an air infiltration rate of
no more than 0.5 cubic feet per minute when tested according to
ASTM E-283.
B. Fixed Windows: All fixed windows in the exterior walls of habitable
rooms must be at least 1/4 -inch thick and must be set in non -
hardening glazing materials.
C. The total area of glazing in rooms used for sleeping must not
exceed 20% of the floor area.
R341.1207.6.17 Exterior Doors.
A. Exterior hinged doors to habitable rooms that are directly exposed
to aircraft noise and are facing the source of the noise must be a door
and edge seal assembly that has a laboratory sound transmission
class of at least STC 35 dB.
B. Exterior hinged doors to habitable rooms that are not directly
exposed to aircraft noise and do not face the source of the noise
must have a minimum STC rating of 30 dB.
C. Sliding glass doors in habitable rooms must have glass that is'/4-
inch thick.
D. Access doors from a garage to a habitable room must have an
STC rating of at least 30 dB.
R341.1207.6.18 Roof/Ceiling Construction.
A. Roof rafters must have a minimum slope of 4:12 and must be
covered on their top surface with minimum 1/2 -inch solid sheathing
and any roof covering allowed by this code.
B. Attic insulation must be batt or blow-in glass fiber or mineral wool
with a minimum R-30 rating applied between the ceiling joists.
C. Attic ventilation must be:
1. Gable vents or vents that penetrate the roof surface that
are fitted with transfer ducts at least 6 feet in length that are
insulating flexible ducting or metal ducts containing internal 1 -
inch thick coated fiberglass sound absorbing duct liner. Each
duct must have a lined 90 -degree bend in the duct so that
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there is no direct line of sight from the exterior through the
duct into the attic, or
2. Noise control louver vents, or
3. Eave vents that are located under the eave overhang.
D. Ceilings must be finished with gypsum board or plaster that is at
least 5/8 -inch thick.
E. Skylights must penetrate the ceiling by means of a completely
enclosed light well that extends from the roof opening to the ceiling
opening. A secondary openable glazing panel must be mounted at
the ceiling line and must be glazed with at least 3/16 -inch plastic,
tempered or laminated glass. The weather -side skylight must be any
type that is permitted by the building code.
R341.1207.6.19 Floors.
The floor of the lowest habitable rooms must be concrete slab on grade or
wood framed floors.
R341.1207.6.20 Ventilation.
A. A ventilation system must be provided that will provide at least the
minimum air circulation and fresh air supply requirements of at least
2 air exchanges in each affected habitable room without opening any
window, door or other opening to the exterior. All concealed
ductwork must be insulated flexible glass fiber ducting that is at least
10 feet long between any two points of connection.
B. Kitchen cooktop vent hoods must be the non -ducted recirculating
type with no ducted connection to the exterior.
R341.1207.6.21 Fireplaces.
Each fireplace must be fitted with a damper at the top of the chimney that
is operated from the firebox and must have glass doors across the front of
the firebox.
R341.1207.6.22 Wall and Ceiling Openings. Openings in the shell of the
residence that degrade its ability to achieve an interior CNEL rating of 45
dB or less when all doors and windows are closed are prohibited. Any
access panels, pet doors, mail delivery drops, air-conditioning, or other
openings must be designed to maintain the 45 dB CNEL or less standard in
the room to which they provide access.
Section R401.1 of the CRC is amended to read as follows:
R401.1 Application.
ORDINANCE NO. 1597
Page 15 of 32
The provisions of this chapter shall control the design and construction of
the foundation and foundation spaces for buildings. In addition to the
provisions of this chapter, the design and construction of foundations in
flood hazard areas as established by Table R301.2(1) shall meet the
provisions of Section R322. Wood foundations shall be designed and
installed in accordance with AWC PWF.
Exception: The provisions of this chapter shall be permitted to be used
for wood foundations only in the following situations:
In buildings that have no more than two floors and a roof.
2. When interior basement and foundation walls are constructed
at intervals not exceeding 50 feet (15 240 mm).
Wood foundations in Seismic Design Category Do, Di or D2 shall not be
permitted.
Exception: In non -occupied, single -story, detached storage sheds and
similar uses other than carport or garage, provided the gross floor area
does not exceed 200 square feet, the plate height does not exceed 12
feet in height above the grade plane at any point, and the maximum roof
projection does not exceed 24 inches.
Sections R403.1.2, R403.1.3.6 and R403.1.5 of the CRC are amended to read as
follows:
R403.1.2 Continuous footing in Seismic Design Categories Do, Di and
D2.
Exterior walls of buildings located in Seismic Design Categories Do, Di and
D2 shall be supported by continuous solid or fully grouted masonry or
concrete footings. All required interior braced wall panels in buildings
located in Seismic Design Categories Do, Di and D2 shall be supported on
continuous foundations.
R403.1.3.6 Isolated concrete footings.
In detached one- and two-family dwellings located in Seismic Design
Category A, B, or C that are three stories or less in height and constructed
with stud bearing walls, isolated plain concrete footings supporting columns
or pedestals are permitted.
R403.1.5 Slope.
The top surface of footings shall be level. The bottom surface of footings
shall not have a slope exceeding one -unit vertical in 10 units horizontal (10 -
percent slope). Footings shall be stepped where it is necessary to change
the elevation of the top surface of the footings or where the slope of the
bottom surface of the footings will exceed one -unit vertical in 10 units
horizontal (10 -percent slope).
ORDINANCE NO. 1597
Page 16 of 32
For structures located in Seismic Design Categories Do, Di or D2, stepped
footings shall be reinforced with four No. 4 rebar. Two bars shall be place
at the top and bottom of the footings as shown in Figure R403.1.5.
REC01'lh M; 9 ? b
h 5 2V
a
a
oil
;NIIN NEIN @4!;l!,N�=
-- MIN. 214 REBAR (TOP & BO'I MOND
WB . TE MT )
f GRADE
N!N'IP; .I'lN III��NINi� 1Vl
IiIE'� �'Illl
STEPPED FOUNM ATIONS
FIGURE R403.1.5 - STEPPED FOOTING
Section R404.2 of the CRC is amended to read as follows:
R404.2 Wood foundation walls.
Wood foundation walls shall be constructed in accordance with the
provisions of Sections R404.2.1 through R404.2.6 and with the details
shown in Figures R403.1(2) and R403.1(3). Wood foundation walls shall
not be used for structures located in Seismic Design Category Do, Di or D2.
Section R501.1 of the CRC is amended to read as follows:
R501.1 Application.
The provisions of this chapter shall control the design and construction of
the floors for buildings, including the floors of attic spaces used to house
mechanical or plumbing fixtures and equipment. Mechanical or plumbing
fixtures and equipment shall be attached (or anchored) to the structure in
accordance with Section R301.2.2.3.8
Section R503.2.4 is added to Chapter 5 of the CRC to read as follows:
R503.2.4 Openings in horizontal diaphragms.
Openings in horizontal diaphragms with a dimension perpendicular to the
joist that is greater than 4 feet (1.2 m) shall be constructed in accordance
with Figure R503.2.4.
ORDINANCE NO. 1597
Page 17 of 32
— PLYWOOD SHEATHING
DIAPHRAGM OPENING
I r _
;la'f
WE1(4 TOTAL)
6.16d COMMON NAILS AS SHOWN + MS
-OR-
METAL TIE 16GA. x 1 1/2"x (OPENING WIDTH + 4'-0") MIN.,
(2 TOTAL) W/ 24-16d COMMON NAILS
hm SL I inch = ::ti ,p nim. I Ilnnm :::: ,W4 R mr'rn
a. Blockings shall be provided beyond headers.
b. Metal ties not less than 0.058 inch [1.47 mm (16 galvanized gage)] by
1.5 inches (38 mm) wide with eight 16d common nails on each side of
the header -joist intersection. The metal ties shall have a minimum yield
of 33,000 psi (227 MPa).
c. Openings in diaphragms shall be further limited in accordance with
Section R301.2.2.2.5.
FIGURE R503.2.4
OPENINGS IN HORIZONTAL DIAPHRAGMS
ORDINANCE NO. 1597
Page 18 of 32
ITEM
Lines 19, 20, 23, and 33 - 36 of Table R602.3(1) of the CRC are amended to read
as follows:
TABLE R602.3(1)—continued FASTENING
SCHEDULE
DESCRIPTION OF BUILDING ELEMENTS NUMBER AND TYPE OF FASTENER""
191 1 " x 6" sheathing to each bearing
20 h 1 " x 8" and wider sheathing to each bearing
231 1 `° x 6" subfloor or less to each joist
33 h I/z" structural cellulosic fiberboard
sheathing
3-8d box (2'/," x 0.113'°). or
2-8d common (21/," x 0.131 "), or
2-1 Od box (3"x 0.128"); or
2 staples, 1 "crown, 16 ga., 1;/4" long
..................
3-8d box (2'/," x 0.1 13'); or
3-8d common (2'/," x 0.131'); or
3-1 Od box (3" x 0.128'); or
3 staples, 1 " crown, 16 ga., 1;/4" long
.......... .........
Wider than 1 " x 8"
4-8d box (2'/," x 0.113'x; or
3-8d common (21/," x 0.131'T or
3-1 Od box (3" x 0.128"); or
4 staples, 1 "crown, 16 ga., 1'/4" long
...... ...................
Floor
3-8d box (2'/," x 0.113'x; or
2-8d common (21/," x 0.131'x; or
3-1 Od box (3" x 0.128'x; or
2 staples, 1 "crown, 16 ga., l;/4" long
Other wall sheathing9
SPACING AND
LOCATION
Face nail
Face nail
Face nail
1'/," galvanized roofing nail, '/16" head diameter.
or V/4" long 16 ga. staple with '/i6"or I "crown 3 6
k 12 -`/fiberboard sheathing ialcellulosic;�7"gvanized roofing nail,'/io'°head diameter, or 3 6
34 - structural g 16 ga. staple with'/, ," or 1 " crown
.... _.....
_ galvanized, 7 7 _....
' I'A" galvanized roofing nail; staple
35 = /,"gypsum sheathing 1 /,°' long; 1'/4" screws, Type W or S
............... ..
36 h '/H" gypsum sheathing' "/4" galvanized roofing nail; staple galvanized. 7 7
g„
/ !H lon1 /," screws, Type W or S
...........
For S1: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0,447 nVs; 1 ksi = 6.895 MPa.
TABLE R602.3(1)—continued
FASTENING SCHEDULE
a. Nails are smooth -common, box or deformed shanks except where otherwise stated. Nails used for framing and sheathing
connections shall have minimum average bending yield strengths as shown: 80 ksi for shank diameter of 0.192 inch (20d
common nail), 90 ksi for shank diameters larger than 0.142 inch but not larger than 0.177 inch, and 100 ksi for shank diameters
of 0.142 inch or less.
b. Staples are 16 gage wire and have a minimum 7/16 -inch on diameter crown width.
C. Nails shall be spaced at not more than 6 inches on center at all supports where spans are 48 inches orgreater.
d. Four -foot by 8 -foot or 4 -foot by 9 -foot panels shall be applied vertically.
e, Spacing of fasteners not included in this table shall be based on Table R602.3(2).
f. For wood structural panel roof sheathing attached to gable end roof framing and to intermediate supports within 48 inches of
roof edges and ridges, nails shall be spaced at 6 inches on center where the ultimate design wind speed is less than 130 mph
and shall be spaced 4 inches on center where the ultimate design wind speed is 130 mph or greater but less than 140 mph.
g. Gypsum sheathing shall conform to ASTM C1396 and shall be installed in accordance with GA 253, Fiberboard sheathing shall
conform to ASTM C208.
h. Spacing of fasteners on floor sheathing panel edges applies to panel edges supported by framing members and required
blocking and at floor perimeters only. Spacing of fasteners on roof sheathing panel edges applies to panel edges supported by
framing members and required blocking. Blocking of roof or floor sheathing panel edges perpendicular to the framong members
need not be provided except as required by other provisions of this code. Floor perimeter shalt be supported by framing
members or solid blocking.
i Where a rafter is fastened to an adjacent parallel ceiling joist in accordance with this schedule, provide two toe nails on one side
of the rafter and toe nails from the ceiling joist to top plate in accordance with this schedule. The toe nail on the opposite side
of the rafter shall not be required.
j, RSRS-01 is a Roof Sheathing Ring Shank nail meeting the specifications in ASTM F1667.
k. Use of staples in braced wall panels shall be prohibited in Seismic Design Category Do, D1, or Dz
ORDINANCE NO. 1597
Page 19 of 32
Exception of Section R602.3.2 and Table R602.3.2 of the CRC is amended to read
as follows:
Exception: A In other than Seismic Design Category Do, Di or D2, a single top
plate used as an alternative to a double top plate shall comply with the
following:
1. The single top plate shall be tied at corners, intersecting walls, and at in-
line splices in straight wall lines in accordance with Table R602.3.2.
2. The rafters or joists shall be centered over the studs with a tolerance of
not more than 1 inch (25 mm).
3. Omission of the top plate is permitted over headers where the headers
are adequately tied to adjacent wall sections in accordance with Table
R602.3.2.
TABLE R602.3.2
SINGLE TOP -PLATE SPLICE CONNECTION DETAILS
_ ............._...._...............
TOP -PLATE SPLICE LOCATION
CONDITION Corners and intersecting walls Buttjoints in straight walls li
Splice plate size Minimum nails Splice plate size Minimum nails
each side of joint each side ofjoint
Structures in SDC A -C; ftnd'ff
SDG 3" x 6" x 0.036„
Dr -1:11 fffld Z2 . Wi kmgilvanized steel plate
Z",, fcH or equivalent
o� '.P...... ^ a., cn9ft� i�44r
.-
,, t�rl
�
Fow St', I law h . 6A mm, I, loor . ;ii,P$ rani
' x 12,. x 0.036'.
(6"w 8d lrr�x (12) &d lnyx
(2t(>" x 0.11,,') nails galvanized Slee) l)l,ale X 0.1 131 nails
of equip alum
rte, .................................................
'
Footnote "b" of Table R602.3(2) of the CRC is amended to read as follows:
b. Staples shall have a minimum crown width of 7/16 -inch on diameter
except as noted. Use of staples in roof, floor, subfloor, and braced wall
panels shall be prohibited in Seismic Design Category Do, D1, or D2.
Section R602.10.2.3 of the CRC is amended to read as follows:
R602.10.2.3 Minimum number of braced wall panels. Braced wall lines
with a length of 16 feet (4877 mm) or less shall have a minimum of two
braced wall panels of any length or one braced wall panel equal to 48 inches
(1219 mm) or more. Braced wall lines greater than 16 feet (4877 mm) shall
have a minimum of two braced wall panels. No braced wall panel shall be
less than 48 inches in length in Seismic Design Category Do, Di, or D2.
ORDINANCE NO. 1597
Page 20 of 32
Table R602.10.3(3) of the
CRC
is amended to
read as
follows:
TABLE R602.10.3(3)
BRACING REQUIREMENTS BASED ON SEISMIC DESIGN CATEGORY
...............
SOIL CLASS D°
WALL HEIGHT= 10 FEET
MINIMUM TOTAL LENGTH (FEET) OF BRACED
WALL PANELS
• 10 PSF FLOOR DEAD LOAD
REQUIRED ALONG EACH BRACED WALL LINE'
» 15 PSF ROOFICEILING DEAD LOAD
» BRACED WALL LINE SPACING <_ 25 FEET
_._
Seismic Design
Story Location
Braced Wall Line
Lonr)7h
Method LIBa
f
Method GB'
Methods
DWB, SFB, PBS,
pCP, HPS, CS-
Method
yg5p
Methods
CS-WSP,
Category
(Veekl
SFBe'�
CS-G
1 rJ
2
1
2.5
0 rl
1A
20
r
5 J
! IIJ1
:1.0
.,,.:
23
L,. t
I
:"0
7, 5
5
7.5
i.1
4 1
1
10
100
0 y
10,0
1I
5 4
50
12.5uq..�
5
12.5
���„II,V
6.i
320 0)
Nil
IVP
9,0
9,0
.1.0
5.1
C,
30
NP
13,5
13.5
9.0
'l
40
N11
18.0
18,0
12.0
10.2
50
114 P
22.5
21.5
15 0
I 18
10
rfll
60
6.0
�
20
12 0
120
.AL1
r'a �ry
1 R (1
111.0
11,;
o u
40
2,10
110
NP,
:1(1.(1
D
31 0,
, raw.
10
...................
11P
..................
2,8 1",6
r
J6
0
P
5.& I1.0
&•.•1 kl.r1
3.1
30
111"
A-�%' 16.6
� 4 ,&,¢r.:.d!.
4 6
10
Q"
1
1Ct
Nil
1VkA
1Jf'
3.&
3.2
20
CVP
NP
141.- NP
7.5
6A
X49
a
30
NP
415-9 S
VF"
I L',
9,6
40
IVP
-Cl I �C',',
� 1 �1 NI'
15 0
t 2.11
50
NP
r?C3 m)
754 Nil
18,8
160
10
12'
`.,.d 117..
1y
:a.3
4,5
20
PrP
1-474 NE
10 5
90
30
NP
1 a
;z..l..,g LE
Pp 8
13.E
40
",ru"
N?..
V ]
21.0
1711
50
q
1`JP,
9 3 NEE
20 3
?:1.11
(Cc71.iXillut d)
ORDINANCE NO. 1597
Page 21 of 32
TABLE R602.10.3(3)—continued
BRACING REQUIREMENTS BASED ON SEISMIC DESIGN CATEGORY
SOIL CLASS D°
WALL HEIGHT = 10 FEET
MINIMUM TOTAL LENGTH (FEET) OF BRACED WALL PANELS
10 PSF FLOOR DEAD LOAD
REQUIRED ALONG EACH
BRACED WALL
LINE'
15 PSF ROOF/CEILING DEAD LOAD
BRACED WALL LINE SPACING _ 25 FEET
.... ",."...... ..._ .._................
Seismic Design Story Location
Braced Wall Line
Length
Method LIB"
t
Method GB
.................. .
Methods
DWB, SFB,
PBS, PCP,
Method
...............
Methods
CS -W SP,
Category
00e'spc
HPS, CS-
WSP
CS -G
SFBej
yt)
NI,
1,x+4
c30
'i1
i1
CJCy
I t.(y .'r Iti
I Y.=::I..:a.p
.i)
68
t VI
P)I
114 P
NP
M.I.
P, .,,
1 I !V
PO
44 Al Nil
2i.0 ivl'
r.7
5
IN 1'
,. w'-
I' i'
;4_4 L.P.
18 0
15 3
1:(
111
� 4:6 CIG'
..,d (4 N111
:1 0
204
lost
I`JPI
%tu
7,(1
C'J6ry
D1...Q.V.... 160
!.V;.::b
1(7
NF'
0) z�l0
1--x-74 t1
a 5
(�.1
A H_4(7
VP°
ti x qq
V E .iy.... 12-L
(U 0
8.5
50
NP
- d(7 to
.(. ....,g
20
1-510 LAP
1-.!"r-4 N11
I 1 Al
Si. Y
30
LT
H 10
1
.444 NF
18 7
u�
....... -
10
NI'
N1"
I'11'
I^,P
dI'
''(D
CJI"
NI"
N1"
.;I'
10
IVP"
NP
NP
°'.11'
P
1(t
NP
NP
INP
I II"
I, iP
`a(D
NP
NP
NP
111,11111
,'P"
uQ'P
NP
NP
NP
1 'i
6A
:10
NP"
NP
NI,
15.0
12..8
erv: 11 Y7 lv,an'
0
NI'
NI:"
NP
2....5
117 1
r. NOr'11,1;+1c=
ti v�rrc+�Iuaiy'rlr,an."iVVry}[
1(7
N1'
NP
NP
31011
25 5
I" (7
INP
NP
NP
37 5
p1
a Linear interpolation shall be permitted.
b. Wall bracing lengths are based on a soil site class "D." Interpolation of bracing length between the Sds values
associated with the seismic design categories shall be permitted when a site-specific Sds value is determined
in accordance with Section 1613.2 of the California Building Code.
c. Where the braced wall line length is greater than 50 feet, braced wall lines shall be permitted to be divided into
shorter segments having lengths of 50 feet or less, and the amount of bracing within each segment shall be in
accordance with this table.
d. Method LIB shall have gypsum board fastened to not less than one side with nails or screws in accordance
with Table R602.3(1) for exterior sheathing or Table R702.3.5 for interior gypsum board. Spacing of fasteners
at panel edges shall not exceed 8 inches,
e. Methods PFG and CS-SFB do not apply in Seismic Design Categories D0, D1 and D2.
f. Where more than one bracing method is used, mixing methods shall be in accordance with Section R602.10.4.1.
g Methods GB and PCP braced wall panel h/w ratio shall not exceed 1:1 in SDC D,,, D, and D, Methods DWB, SFB, PBS, and HIPS
are not permitted in D,,, D, and D2 -
ORDINANCE NO. 1597
Page 22 of 32
Table R602.10.4 of the CRC is amended to read as follows:
TABLE A602.10.4
BRACING METHODS
............ .
CONNECTION CRITERIA'
METHODS, MATERIAL
MINIMUM THICKNESS
FIGURE
FasIlaners
spacIng
Xdk:o1IAuu1m ilk
VYI,IJ II(.11 IIIIIIIIII'vidl
Irl11�lnp;nqd
111 I,fia
. . .
.......
,oud S,VJCIII,I,,
pull nuunilacumvl
. . . . ......... ...........
VI ing!'< ni, 11
CA
wood hoard;
,nLd .pv Ing
,W1,11111,
N, t , I, I 7 p n I I � I I I I?"
h,Jd
Wood
I) q
�,Ulh�,WII,A poll 110
IScc sol'Gon RLA)
tO V.111;,10c ��i Kh" 4---'+
Por4u-�f.,,w.,t
;:,d 1.2 W
W, iod ruic I il r0
4"m 11;1nJ edgll,,
poiuchs wnh sujm��
SVC F[1,21[lk: 10,02, 0'r, 5 ti11 conImon x 0. P3 [vok
12" jl[ anti.-um-dialc
su i I, •V 'm N 31 cca.I
Pq
I"imQ sk!"non
jppti
%v�11111
V
............... ........
If ,
g hong x 11
VV�bK 11 hlw'IIVV,Ilad
rPiI1u11I1u1n
In
7M
IiO V."0111°
gall%anjad rolofin�..! na0,l.
Nods m ',i,,AcvvN N,N,.ir 11 ;,VN-, R602 III Nir
kor ,iU hrul:rd 1l;Ifl)
hwwion,
"'
I.; R
�pv,
IyIp'sun) ho idl
14:161" ly I�t prr T�iNr R 70� or
and holt�lilill PLIW,�O
_j
mr
hvhl
fou
(x
V� I j � i 111 dhina 111
u v� xv„+ i(h i I� 10
Gil Vd
,
F, "I "link 11111
S,%- S"'c6on Rlt,,05�
x villk
p(A.,
Scil., So.:uou R,411; i k q
al wlU I I p,
pj W� i j �J[nrk�
"e'llaoillil JAIAISIL1%
�Iud
IN
HEIS
d[m, (J hic%u] n,6k nilh
Halidblvilid
"I folL ffi�J[Xh I'll w 116
11"'nollh to 4iik,onIniodn,., N I�-”
4" cdjix-, Ns,, IlIdd
�ulhl
...........
...........
........ ...
A B W
Awh(-11 inav-,
SuLifion
N ailxd
ORDINANCE NO. 1597
Page 23 of 32
TABLE R602.10.4 --continued
BRACING METHODS I
ORDINANCE NO. 1597
Page 24 of 32
CONNECTION CRITERIA'
METHODS, MATERIAL MINIMUM THICKNESS FIGURE
Fasteners spacing
pvG
S(,c Ncoiop Jr,1,.! 11X rO 11 wqli R60
w i I lwk
("s
w4v4NIknmmv,1I P;41nd Ih1lF
Vito fe, 4v ;o"Iew-F
VAN.,
Z cd, --Cr; 12, [whill
N,, -v, hdi,Ch4mll CS WSP Sce Mcilh,wd Cs bNrsv,
d,, xl'NhIRNCQg11QI '10cathed
Wit: c 'S'ClUkin le,6fll 01 r, 4 S1,: ScoVoin WO L.10.6 4
CS S'FR'lo
I
[11 Ing x R III„!.,. "'IY SII I.'
URII.1IVXllI'll
�,pak.litg
jj,j� hb VIIV 11
....... . ...........
i wim. 11 lu."o 3(4 num I dc%�-c "'M 79' �J,�L 11 p"und I-cl qujj,1. jj,,F�l
NII 1111 C I,V. lll,}L1.11 T
l(mchinlicol oll vlafl hdlndiin('{ Millhod 6AII md k Iwflinitud hlsr-klliik
C I), D, wd I
11, 'W,Jjpphop k) pam k ne'.t qo dom ql,)( C1111il7, -,ol& end wah m quot toxo
uak "';hAl of IIY bv 11svd w) (Ill(' w'ffl olP 111w hI Cf 51111th 1.
r), uld Ll,) coot rc,h,m6n'u had (md sliAvo((,wcvd 3 psf
(�ilh t wjdcr m i(iuoM,11w(
!?c, 4.p'n4l"', ndim-put to;Y Moho() (IS u pwwl "Imil I)v jlmmicd vv
1Q4l) P.60 '40 `r hdl hijdif ch,,i6 ip(:nh1,,,, shAl nol
he p(TAMcd jd,jx'('Inr to;l Mi'diod ('s G 11mac.11,
d Nlmhod ('s srB doom ipph, iv SeflmicD[j, D[ and 01,
e mt:,tho(i 1ppllY('s m dcym N d vifl('nul lw'o tJuio,17 chv(Aillf's ht ',v.,ismh rksilYu Cmcgo('ilos 1111
D , ol))v
%4'l11()Lk 613 IfId NT hfaccd �fll vwlO !I �% 1�114, dja�] no c%LmI I � 11i 5V ” D, , D,^ m 1)
Midlimk 1411B. D'�1T� SIB 1'h$°7 1""S' Alld pr:('; 110
vemliitPd ill SDU 1),h;;pv, WyW' I„"J
t C Otilli ICS I 1 4 nl lC d tW' l I I I WW 11-C IS S1 l9l ll I) c ro rol ll b it ed v I S'D(' I D.
.... ....... . .
ORDINANCE NO. 1597
Page 24 of 32
Table R602.10.5 of the CRC is amended to read as follows:
TABLE R602'10'5
MINIMUM LENGTH OF BRACED WALL PANELS
ORDINANCE NO. 1587
MIwIMomLswor*
Msrxoo
CONTRIBUTING LENGTH
(See Table noox.m/8
Wall Height
(inches)
xmm
9 feet
10 feet
11 feet
;Iufeet
------�9VB,vVS9, SFB,FBS,pCp, HPS, BV-x/5P
40
48
4K
5� �
50
Actual'--
-- ---
--
--
----Double
sided ~Acmo|
0B
4x
48
48
53
5�
Single sided = 0.5 x Actual
LIB
55
62
----__
09
NP
NP
Acuu|b
----
�
SDC A,Band C,ultimate
---
design
28 28
32
34
38
42
wind uycvd< 141 mph
48
ABVy
SDC D,I\and [�,ultimate
design
32
32
34
NP
NP
wind speed < 140 mph
- �S-0
24
—27
30 --33-
36
-- Acmo|^
Adjacent clear opening, height
(inches)
<04
--�4
27
30--
33
36--
----
08
26
27
30
33
36
72
27
27
30
--��--
-----
76
30
29
30
33
36
00
32
30
]O
�������
33
36
84
--��
32
32 -33
36
5 --
35
33
36
| 92
|
43
43
37
35
35
26
90
48
'
4l
38
36
30
C8-YVSP,C8-SFB ------ |OU
��
44
40
38
38
___ ___.
|O4
-'
49
43
40
39
&oum\ :
�V8
--�
54
--��--
43
4|--.
112
—
--
--50-----45�--
43
ll6--
�--
55
--48
45
120
-
-
00 --52----2
�--
124
--
56
51
128
-
—
0
54
-132 `
-
--�---
06
58
136
-
� -'
--�
—
--
02
/��
—
-
--
-'
06
___
144
—
—�
'
' �
^
72
— METHOD
-__
Portal
header height
_
_____
_______
(See Table R802.10.4)
ofeet
9 feet
_
10 feet
feet e
-- Supporting
' ''
-����
f���
�u*�c |
�m��
48
9FH
Supporting and
| ' '—'
-
24
24
��
24�
�mcx
���
�o�u
--
PPO
24
27
30
Note
Note
}.5«Actual'
SDC A`Band C
18
18
20
Nmcc
Note
-- l.5»Aomd�—'
C3 -PF �_
U SDC D^.D/and [,
4624
4-9244-922-024�
���
Note
Note
Actual'
ORDINANCE NO. 1587
a. Linear interpolation shall be permitted.
b. Use the actual length where it is greater than or equal to the minimum length,
c. Maximum header height for PFH is 10 feet in accordance with Figure R602.10.6.2, but wall height shall be permitted to be
increased to 12 feet with pony wall.
d. Maximum header height for PFG is 10 feet in accordance with Figure R602,10.6.3, but wall height shall be permitted to be
increased to 12 feet with pony wall.
e. Maximum header height for CS -PF is 10 feet in accordance with Figure R602.10.6.4, but wall height shall be permitted to be
increased to 12 feet with pony wall,
ORDINANCE NO. 1597
Page 26 of 32
Figure R602.10.6.1 of the CRC is amended to read as follows:
^i'NIF'P"a1 fIIJIIM,!'�'ll 16�+'lldl Il. ..... � ..._..........._, b I
.,III W"lI k,1! K", ()111 iIIA 11: E.
MIN 4 p P X114 r �j r�A i � j
Pd%VGII I 3P J11,DS REOIAREID . . . ............
0 0 1) WN 011H � ?1:S � I I V I
,xMl NIU
: � I �!::NULL. I In 6 W � Y,-”
r.
,J F, F, 1 11 04 VIII I OR C� L 111, R!
:2
f� W 1: U A F' I Ii 111 If k 1110, 1 81u VNII 11111
14N"h UGIYNVIII EU f,) I T, FU k%'1,1lA1E1D VVIETZ
11VAD, 10 1 11, o ii I! J, RA I . ^ 11 E I
,�ruc riE 11:111
1: )o lrY
ZICHNIMIL 111 N JIAII),,� 11 I'DN(
C,1� L12" DPIIN1111:� IE R 1,11,,k:.Yoilz ...........
I 11 11, tl I D IV 1 WE F NI
,jr, ii,", r ill 11 1h: IAO I
IF `':S F: G I 11:T 8
"CNV11 11 1 Yl]„ t I I PIE i�:� jLoLPLAL�. SHALL E,1,E DONTIRII
4N F RSI 1) 5
P..rEl) Vou PANIEL
I I i 111 6, 1[ S INA I E e,Vu~ Il fl II! 1!
D
JOINIMC3 IMAEN
10"," I:::� Iq W RE F 4 3 TIE N!111� 1fI I 1P
I D NA YI DI 11 1rEl+ -- 1', Y A, 111 , i @, U1
1, F611' I L S f I SI11 00 F
S I C) I V A, 11 III5 1 ^M: ) C! I U E J 11 ; I S
1:'M 4 hk��, I'V10
SI -Ill '11 u r R P3
TA ill V 4 FRIE J11, F I I: 11 Ir 6 i jjO,)Llq, ) 11; 0 11 �:l� IN
Q1 GIL Ad 11,114 A R II U I , 1', r0 II1 J tlI %' U I
1AIIINIRM MCA II'1u7 1110,110 Sl1, JIAIII Fe
111 E3 V3 11 M Y " s, P Ill „.: Z, ' A
, r. �, .: :, , , ,:'2" E ',!C
FIGURE R602.10.6.1
METHOD ABW—ALTERNATE BRACED WALL PANEL
ORDINANCE NO. 1597
Page 27 of 32
Figure R602.10.6.2 of the CRC is amended to read as follows:
ix 11 " I ';1N N p''I Y4 :,I III I, IIIJB Ii I :I 0 :1, 1 1 1::� , A I ;I
Nr"', 9 4 -
III "Ill II'VIIJ 11,11 IN I d 1 1 INN)
1:
'I1 11 , I I '1 '101, Wk
� ,11 1^°11.•11 1'01 U I
%11 11101111: U I,;, 1 111 "d N I'd I I P
RIT'A ""H' P, I:, I Ir 11 1 1 1 11
It
IIIIi, Zil
Il" V 1: j I I' N 11 11 11 1 1114 11:
11'= 7F" LE.D PF -F,
FRONT ELEVATION
For SL 1 inch =: 2.5.4 min, I foot = 304.8 mrn
�V�
AU
III V���I; II� II
V I Jill! III''',u
III IN 111I
)IA K::IYI i.i�
III IN, W A 11)
I ""�I:
11 R, �II:: I IICIIQ
NO k I I II::'I
Ir
'A' 4, -1
p h F• -4F, f4�:. N
It
c"t AIVI� "G
FIGURE R602.10.6.2
METHOD PFH—PORTAL FRAME WITH HOLD-DOWNS
AT DETACHED GARAGE DOOR OPENINGS
ORDINANCE NO. 1597
Page 28 of 32
Figure R602.10.6.4 of the CRC is amended to read as follows:
,+'F a1,1',;I,1„ 1� I 1H lI I I': I , ;, I r , ,, � I I I II � , �, ` . � n � ,
........... _, ,Al , ' . L
(MR, ( ONCRIF VIE OR lIJIIJI1HII(KIK I OUNIDA00”,
For SL I inch = 25.4 nim. I fool = 304.8 min.
FIGURE R602.10.6.4
ORDINANCE NO. 1597
Page 29 of 32
I I Z Z
1 IN
h: 1:1 1 11,
IM III
MVI
1:: N: Id, 1 1:, 1 11
Lo
I
"
I ICI1,11
1111 VIII II X"„1i'1, 11, 11
MI IN In,
+111',
1111p1:1
:�I, P I
f f
11h; 1 1� 1,
(MR, ( ONCRIF VIE OR lIJIIJI1HII(KIK I OUNIDA00”,
For SL I inch = 25.4 nim. I fool = 304.8 min.
FIGURE R602.10.6.4
ORDINANCE NO. 1597
Page 29 of 32
Section R606.4.4 of the CRC is amended to read as follows:
R606.4.4 Parapet walls.
Unreinforced solid masonry parapet walls shall not be less than 8 inches
(203 mm) thick and their height shall not exceed four times their thickness.
Unreinforced hollow unit masonry parapet walls shall be not less than 8
inches (203 mm) thick, and their height shall not exceed three times their
thickness. Masonry parapet walls in areas subject to wind loads of 30
pounds per square foot (1.44 kPa) or located in Seismic Design Category
Do, Di or D2, or on townhouses in Seismic Design Category C shall be
reinforced in accordance with Section R606.12.
Section R606.12.2.2.3 of the CRC is amended to read as follows:
R606.12.2.2.3 Reinforcement requirements for masonry elements.
Masonry elements listed in Section R606.12.2.2.2 shall be reinforced in
either the horizontal or vertical direction as shown in Figure R606.11(3) and
in accordance with the following:
1. Horizontal reinforcement. Horizontal joint reinforcement shall consist
of least one No. 4 bar spaced not more than 48 inches (1219 mm).
Horizontal reinforcement shall be provided within 16 inches (406
mm) of the top and bottom of these masonry elements.
2. Vertical reinforcement. Vertical reinforcement shall consist of at least
one No. 4 bar spaced not more than 48 inches (1219 mm). Vertical
reinforcement shall be within 8 inches (406mm) of the ends of
masonry walls.
Section R803.2.4 is added to Chapter 8 of the CRC to read as follows:
R803.2.4 Openings in horizontal diaphragms.
Openings in horizontal diaphragms shall conform with Section R503.2.4.
Section R905.3.1 of the CRC is amended to read as follows:
R905.3.1 Deck requirements. Concrete and clay tile shall be installed only
over solid sheathing.
Exception: Spaced lumber shall be permitted in Seismic Design
Categories A, B, and C.
Section R1001.3.1 of the CRC is amended to read as follows:
R1001.3.1 Vertical reinforcing.
For chimneys up to 40 inches (1016 mm) wide, four No. 4 continuous
vertical bars adequately anchored into the concrete foundation shall be
placed between wythes of solid masonry or within the cells of hollow unit
ORDINANCE NO. 1597
Page 30 of 32
masonry and grouted in accordance with Section R609. Grout shall be
prevented from bonding with the flue liner so that the flue liner is free to
move with thermal expansion. For chimneys more than 40 inches (1016
mm) wide, two additional No. 4 vertical bars adequately anchored into the
concrete foundation shall be provided for each additional flue incorporated
into the chimney or for each additional 40 inches (1016 mm) in width or
fraction thereof."
SECTION 3: Environmental Assessment. The City Council determines that this
ordinance is exempt from review under the California Environmental Quality Act
(California Public Resources Code §§ 21000, et seq., "CEQA") and the regulations
promulgated thereunder (14 California Code of Regulations §§ 15000, et seq., the "CEQA
Guidelines") because it consists only of minor revisions and clarifications to an existing
code of construction -related regulations and specification of procedures related thereto
and will not have the effect of deleting or substantially changing any regulatory standards
or findings required therefor, and therefore does not have the potential to cause significant
effects on the environment. In addition, this ordinance is an action being taken for
enhanced protection of the environment and is exempt from further review under CEQA
Guidelines § 15308.
SECTION 4: Construction. This Ordinance must be broadly construed in order to achieve
the purposes stated in this Ordinance. It is the City Council's intent that the provisions of
this Ordinance be interpreted or implemented by the City and others in a manner that
facilitates the purposes set forth in this Ordinance.
SECTION 5: Savings Clause. Repeal of any provision of the ESMC or any other city
ordinance herein will not affect any penalty, forfeiture, or liability incurred before, or
preclude prosecution and imposition of penalties for any violation occurring before, this
Ordinance's effective date. Any such repealed part will remain in full force and effect for
sustaining action or prosecuting violations occurring before the effective date of this
Ordinance.
SECTION 6: Severability. If any part of this Ordinance or its application is deemed invalid
by a court of competent jurisdiction, the city council intends that such invalidity will not
affect the effectiveness of the remaining provisions or applications and, to this end, the
provisions of this Ordinance are severable.
SECTION 7: Validity of Prior Code Sections. If this the entire Ordinance or its application
is deemed invalid by a court of competent jurisdiction, any repeal of the ESMC or other
the city ordinance by this Ordinance will be rendered void and cause such ESMC
provision or other the city ordinance to remain in full force and effect for all purposes.
SECTION 8: Publication. The City Clerk is directed to certify the passage and adoption
of this Ordinance; cause it to be entered into the City of EI Segundo's book of original
ordinances; make a note of the passage and adoption in the records of this meeting; and,
within fifteen (15) days after the passage and adoption of this Ordinance, cause it to be
published or posted in accordance with California law.
ORDINANCE NO. 1597
Page 31 of 32
SECTION 9: Effective Date. This Ordinance will become effective on January 1, 2020
following its passage and adoption.
SECTION 10: Filing with Building Standards Commission. The City must file a certified
copy of this Ordinance with the California Building Standards Commission.
PASSED AND ADOPTED this 19th day of November, 2019.
Drew Boyles, or
ATTEST:
Tracy Weavef)� City Clerk
APPROVED1 ,AS TO FORM
Mark D. Hensley, ZAttorney
ORDINANCE NO. 1597
Page 32 of 32
CERTIFICATION
STATE OF CALIFORNIA )
COUNTY OF LOS ANGELES ) SS
CITY OF EL SEGUNDO )
I, Tracy Weaver, City Clerk of the City of EI Segundo, California, do hereby certify that
the whole number of members of the City Council of said City is five; that the foregoing
Ordinance No. 1597 was duly introduced by said City Council at a regular meeting held
on the 5th day of November, 2019, and was duly passed, and adopted by said City
Council, approved and signed by the Mayor, and attested to by the City Clerk, all at a
regular meeting of said Council held on the 19th day of November, 2019, and the same
was so passed and adopted by the following vote:
AYES: Mayor Boyles, Mayor Pro Tem Pirsztuk, Council Member Brann, Council
Member Pimentel, and Council Member Nicol
NOES: None
ABSENT: None
ABSTAIN: None
WITNESS MY HAND THE OFFICIAL SEAL OF SAID CITY this day of December,
2019.
UW�4/acy Weaver, City Clerk
of the City of EI Segundo,
California