ORDINANCE 1525 ORDINANCE NO. 1525
AN ORDINANCE ADOPTING THE CALIFORNIA RESIDENTIAL
CODE, 2016 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 El 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 December 6, 2016, 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 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 El 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 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.
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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 2016 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;
I. 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 § R301.2.2.2.5 Irregular Buildings
14.Add CRC § R301.2.2.3.8 Anchorage of Equipment
15.Add CRC § R341: Residential Noise Insulation Standards
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16.Amend CRC § R401.1 Foundation Application
17.Amend CRC § R403.1 General Footings
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 Table R602.3(2) Alternate Attachment
23.Amend CRC Table R602.10.3(3) Bracing Requirements
24.Amend CRC Table R602.10.4 Bracing Methods
25.Amend CRC Figure R602.10.6.1 Alternate Braced Wall Panel
26.Amend CRC Figure R602.10.6.2 Portal Frame
27.Amend CRC Table R602.10.5 Braced Wall Lengths
28.Amend CRC § R602.10.2.3 Minimum Number of Braced Wall Panels
29.Amend CRC Figure R602.10.6.4 Method CS-PF
30.Amend CRC § R606.4.4 Parapet Walls
31.Amend CRC § R606.12.2.2.3 Reinforcement for Masonry
32.Amend CRC § R602.3.2 Top Plate
33.Add CRC § R803.2.4 Openings in Horizontal Diaphragms
34.Amend CRC § R1001.3.1 Vertical Reinforcing
SECTION Z Title 13, Chapter 2 of the El Segundo Municipal Code ("ESMC") is
amended in its entirety to read as follows:
"CHAPTER 2
RESIDENTIAL CODE
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Section 13-1-1: ADOPTION OF CALIFORNIA RESIDENTIAL CODE,
2016 EDITION.
Pursuant to California Government Code § 50022.2, the California
Residential Code, 2016 Edition, published at Title 24, Part 2.5, of the
California Code of Regulations, and Appendix J of the California Residential
Code, 2016 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 180 days 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 building official determines that substantial work
has not been performed within the time specified above. Substantial work shall be
constructed to mean:
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1. Measurable work such as, but not limited to, the addition of footings,
structural members, flooring, wall covering, etc.
2. The work mentioned in subsection 1 of this Section [A] 105.5 above must
constitute 20% of the value of the work for which the permit was issued in
any 180 day period for Group R, Division 3 occupancies and 10% for all
other occupancies.
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 105.8 of Chapter 1 of the CRC is added to read as follows:
105.8 Responsibility of permittee.
Building permits shall be presumed by the city to incorporate all of 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 109.5.1 of Chapter 1 of the CRC is added to read as follows:
108.5.1 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
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days have elapsed from 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 105.5.2 of Chapter 1 of the CRC is added to read as follows:
108.5.2 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 180 days 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 108.6 of Chapter 1 of the CRC is amended to read as follows:
108.6 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 110.1.1 of Chapter 1 of the CRC is added to read as follows:
109.1.7 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 R113.3 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 $250.00 charge, or a higher amount set by 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.
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Section R301.1.3.2 of Chapter 3 of the 2016 CRC is amended to read as follows:
R301.1.3.2 Wood-frame structures.
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, D2 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 of the CRC are amended to read as
follows:
R301.2.2.2.5 Irregular Buildings.
1. 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. When the end of a braced wall panel occurs over an opening in the wall
below-
5. Where portions of a floor level are vertically offset.
Section R301.2.2.3.8 is added to Chapter 3 of the CRC to read as follows:
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R301.2.2.3.8 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
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 lb/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.
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"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.
"Residence" means any occupancy group R building as used in El Segundo Title
13 of the El 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.
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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
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, 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 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.
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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.
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 '/z-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
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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 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 '/2-inch solid sheathing.
C. Masonry walls with a surface weight of less than 40 pounds per square
foot will require an interior studwall 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.
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E. Exterior solid sheathing must be covered with overlapping asphalt felt.
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 '/a-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 '/a-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
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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.
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.
ORDINANCE NO, 1525
Page 16 of 31
Section R401.1 of the CRC is amended to read as follows:
R401.1 Application.
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:
1. 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. 1525
Page 17 of 31
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.
RECONOffNDt a 3 b
a
b S 2'6'
,;.., ...,.;. b :- MIN,244 DEBAR(TOP&BOTTOM)
B0770M PLATE(IST.)
Illl I . w. J GRADE
�� I1111111Iull� :ll�l . . .
Illl�llllilll �.11l �Nlli
PT 11109 Illl
STEPPED FOUNUTIMS
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. 1525
Page 18 of 31
PLYWOOD SHEATHING
DIAPHRAGM OPENING
,r A^°.✓s . y r i• .��,da.s' yA"' � r^0 u. raa a .u� " a r'�a i a
�•', "" � ,�;�:."'+x~� .ter ,"s�"�,;'^
METAL TIE 1 GGA.x 1 1l2`x
4° MIN., (4 TOTAL)��/ '� I �""".;'•�
W/16-16d COMMON NAILS ASS �.................,,...r �" "✓' :, 1 ,,"'
-OR- `f ,
METAL TIE 1 _x 1 1/2"x(OPENING D +4'-0") MIN.,
(2 TOTAL) W1 24-169 COMMON NAILS
No SI: I mO=25.-1 cttrrnt I Imil-1614 8 mun
a. Blockings shall be provided bevond headers.
b. Metal ties not less than 0.058 inch f1.47 mm (16 galvanized aaae)] 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 vield 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
N HORIZONTAL DIAPHRAGMS
ORDINANCE NO. 1525
Page 19 of 31
Lines 35 and 36 of Table R602.3(1) of the CRC are amended to read as follows:
TABLE 602.3(1)
FASTENING SCHEDULE—continued
-REM„ µ DESCRIPTION OF BUILDING ELEMENTS I NUMBER AND TYPE OF FASTENERa,b,c I SPACING AND LOCATION
Floor
girder or Dist
24 2"subfloor to 3-16d box(31/2"x 0.1351;or
j g 2-16d common(31/2"x 0.162 1 Blind and face nail
25 2"planks lank&beam—floor&roo '3-16d box(31/2"x 0.135);or
p 2-16d common(31/2"x 0.162 At each bearing face nail
3-16d common(31/2"x 0.162
26 Band or rim joist to joist 4-10 box(3"x 0.128'),or End nail
4-3'x 0.131"nails;or
4-3"x 14 ga.staples.7/16"crown
20d common(4"x 0.192);or Nail each layer as follows:32"o.c.
at top and bottom and staggered.
10d box(3"x 0.128);or 24"o.c.face nail at top and bottom
27 Built-up girders and beams,2-inch lumber 3"x 0.131"nails staggered on opposite sides
layers And:
2-20d common(4"x 0.192 1;or Face Hall at ends and at each splice
3-10d box(3"x 0.128);or p
3-3"x 0.131"naffs
4-16d box(3112'x 0.135);or
28 Leger strip supporting joists or rafters 3-16d common(31/2"x 0.162);or At each joist or rafter,face nail
u 4-10d box(3"x 0.128);or
4-3"x 0.131"naffs
29 i Bridging to joist 2-1 Od(3"x 0.128) Each end,toe nail !
SPACING OF FASTENERS _
ITEM DESCRIPTION NUMBER AND Intermediate
OF BUILDING ELEMENTS TYPE OF FASTENERa b Etfgtas h u su orts®'e
arichos) I OnPches)
Wood structural panels,subiloor,root ano interior wall sheathing to framing and particleboard wall sheathing to framing
lsee Table Rt42.,3(3)for wood structural panel ra„tfcdorwall sheathing to wall framhrg]
30 3/8 i/z•= 6d common(2 x 0.113)nail(sub floor,wall)i 6 12'
l�
8d common(21/2'x 0.131)nal l(mol')
31 "5/32'--1 ” 8d common nail(21/2"x 0.131 ) 6 12'
32 11/ "-11! 10d common(3"x 0.148') nail;or
8 q 8d(211,"'> 0.131)deformed naff 6 12
other wall sheathing9
33 1/2 structural cellulosic fiberboard 11/z*,uplvanl°red roofing nail,r/16"head
sheathing dianimer,or I "'crown staple 16 ga.,11/4"long 3 6
34 L'/s2"structural cellulosic 11/4"galvanRxcrtl roorlrq4 11all9,7/�6"head diame- 3 6
fiberboard sheathing ter,or 1"'crown staple 16 ga., 1/1/4"long
351 1/2"gypsum sheathings 11/2"R alvanilzed roofing nail;staple galvanized, 7 7
11/2"lung:1 /q scrhntars,Type W or S
361 5/8"gypsum sheathings 15/4"i;alvlanlVefl roofing pall:staple galvanized, 7 7
1 /8"Catsn,g';1"I8"'screws,'1'y1w W or S
Wood structural panels,combination subfloor underlayntwsm to framing
37 1/4"and less 6d defonned( "x 0.120 1 naff;or 6 12
8dconimon(21/2'x 0.131)nail
38 7/8'- " 8d counnon(21/2'x 0.131)nail;or
8 �8d dvl'brtned(21/2"x 0.120)nail 6 12
39 ll/ 11/ 10d common(3'x 0.148')naff 6 12
;or
8 4 8d deformed(2112"x 0.120)nail f
................
For Sk 1 inch=25.4 mm,1 foot=304.8 mm,1 mile per hour=0,447 mis;1 ksi=6,895 MPa.
ORDINANCE NO. 1525
Page 20 of 31
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 l:lr yr than 0,177 Irsch,and 100 ksi lrn Omnk rl'iaau+wle of 0.142 inch or less.
b.Staples are 16 t„aye wire and have ua minimum ora diameter crown width.
c Nails shall be spaced at not more than 61nches on center at all supports where spans are 48 inches or greater.
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. Where the ultimate design wind speed is 130 mph or less,nails for attaching wood structural panel roof sheathing to gable end wall framing shall be spaced 6
inches on center.Where the ultimate design wind speed is greater than 130 mph,nails for attaching panel roof sheathing to intermediate supports shall be
spaced 6 inches on center for minimum 48-inch distance from ridges,eaves and gable end walls:and 4 inches on center to gable end wall framing.
g.Gypsum sheathing shall conform to ASTM C 1396 and shall be instal led In accordance with GA 253.Fiberboard sheathing shall conform to ASTM C 208.
h.Spacing of fasteners on floor sheathing panel edges applies to panel edges supported by flaming 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 framing members need not be provided except as required by other provisions of this code.Floor peri meter shall be
supported by framing members or solid blocking.
t. 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 nai Is from
the ceilingjoisl to top plate in accordance with Us schedule.The toe nail on the opposite side of the rafter shall not be required.
1 tNc of slanitw in:btaccd wall trancls 41311 lit irlaali'ibitcxl rrli S¢i rriic Doielr
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 Desim Catepory Do, D1„ or Da_.
ORDINANCE NO. 1525
Page 21 of 31
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
WALL HEIGHT;10 FEET MINIMUM TOTAL LENGTH(FEET)OF BRACED WALL PANELS
1OPSFFLOOR DEAD LOAD REQUIRED ALONG EACH BRACED WALL LINE'
15PSF ROOF/CEILING DEAD LOAD
BRACED WALL LINE SPACING?-25 FEET
.............
Methods Methods
Braced Wag Line Method Ljed Method GB DWB,SFB,PBS, Method CS•WSP,
Solsn,dc Design Story Location Lent WSP
Category gill PCP.FMS,Cs-
wool, SFB8J CS-G
A 10 2.5 2.5 2.5 1,6 1.4
20 5,0 5,0 5.0 12 2.7
30 7.5 7.5 7.5 4,8 4.t
40 10,0 100 10.0 6.4 5.4
so 12.5 12,5 12,5 8.0 6,8
A NP 4,5 4,Fj 3.0 2,6
10 N P 1,0 1,1 U 5.1
(townhouses only) 30 NP 13,5 13.5 9.0 7.7
40 NP Ko 18.0 12.0 10.2
50 NP 22.5 22,5 15,0 12.8
10 NP 6.0 6.0 45 18
20 NP 12.0 IZO 9.0 7,7
- 30 NP 18.0 18.0 115 11.5
7 40 NP 24,0 24,0 18.0 155.3
so NP 30,0 30,0 22.5 19.1
................
10 NP " 5.6 5A 1.8 1.6
NP " lt.o LI-0 3.6 3.1
30 NP &4 16.6 &4 16,6 5.4 C6
40 NP 44-4 22.0 4"22.0 72 6,1
50 NP 44-9 27.6 -1-"27.6 9.0 7.7
to NP .4 NT 3.8 3,2
20 NP 4" hT 4" NP 7.5 6.4
Do 77 30 NP 4" MI 4-&9 a 11.3 96
40 NP -24-.9 a 3" hE 15,0 12.8
S0 NP -44 np- 24.4 NP 1 18.8 16.0
.............- .......................
to NP -;L.4 NIP
20 NP 444 a -1-" LE IM 9,0
30 NP -244 NE 2" a 158 13.4
40 NP 2" hE 2" M 21,0 17.9
so NP 4 LE A,4 hE 26-3 22 3
(continued)
ORDINANCE NO. 1525
Page 22 of 31
TABLE R602.10.3(3}-continued
BRACING REQUIREMENTS BASED ON SEISMIC DESIGN CATEGORY
• SOL CLASS D"
WALL HEIGHT-10 FEET
10 PSF FLOOR DEAD LOAD MINIMUM TOTAL LENGTH(FEET,)OF BRACED WALL PANELS
15 PSF ROOFXEILING DEAD LOAD REQUIRED ALONG EACH!BRACED WALL LINE'
• BRACED WALL LINE SPACING<25 FEET
r
Seismic Design Braced Wall Line own,$FBI Method Methods
Story Location Length Method Lind Method GB:- d
Category Pas,PCR WSP CS-WSP,
HIRS,Cs- CS-G
SFB9J
10 NP 3 9 6.0 " 6.0 2.0 1.7
20 NP 64 12.0 64 12.0 4.0 3.4
30 NP 180 180 6.0 5.1
40 NP +10 24.0 4"L4.0 8.0 6.8
50 NP 4-,&4 30.0 4x830.0 10.0 8.5
10 NP 64 ry 64 NP 4.5 3.8
20 NP 4-14 NP 424 LE 9.0 7.7
D, 30 NP 484 LE 4"hR 13.5 11.5
NP 40 NP 2"NP I 18.0 15.3
50 NP 4" hE 244 hR 22.5 19.1
A 10 NP 8§ NP 6.0 5.1
20 NP 4�4 NP +?-G hT 12.0 10,2
30 NP 2" LE Q"LE 18.0 15.3
40 NP a" a 344 hE 24.0 20.4
50 NP 44.4 NP 42-919P 30.0 25.5
10 NP 44- 8.o 440•- HA 2.5 2.1
20 NP 8-0- 1-60 8-0•16() 5.0 4.3
30 NP 12-.()- 14.0 14- 24.0 T5 6.4
40 NP 18:0- 312.0 W4)-2.L! 10.0 8.5
50 NP 20-.9-- 40.0 7041-IM 12.5 10.6
10 NP *.& hm -7-.5 D1 5.5 4.7
20 NP +" DLE +"hT 11.0 9.4
30 NP 2-2-.5 NE 22.& hE 16.5 14.0
40 NP 3" tLP 41" hT 22.0 18.7
D2 50 NP 47-.& a 47, 27.5 23.4
A 10 NP NP NP NP NP
20 NP NP NP NP NP
30 NP NP NP NP NP
40 NP NP NP NP NP
50 NP NP NP NP NP
to NP NP NP 7.5 6.4
20 NP NP NP 15.0 12.8
Cripple wall below 30 NP NP NP 22.5 19.1
one-or two-story dwelling
40 NP NP NP 30.0 25.5
50 NP NP NP 37.5 31.9
a.Linear interpolation shall be permitted.
b.Wall bracing lengths are based on a soil site class'D." Interpolation of bracing length between the S&values associated with the seismic design categories
shall be permitted when a site-specific S&value is determined in accordance with Section 1613.3 of the Intemational fluikkap 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 interiorgypsum board.Spacing of fasteners at panel edges shall not exceed 8 inches.
e.Method CS-SFB does not apply in Seismic Design Categories Do,D1 and D2.
L h1elhods CYB and PCP braced wall vand h4 ratio shall not exceed I:l III SW, D'jjDj or M,kidlieds DWB,SFR PBS.and HPS are not ticitniftcd to SIX',
J)"11),lor 1)
ORDINANCE NO. 1525
Page 23 of 31
Table R602.10.4 of the CRC is amended to read as follows:
TABLE R602.110.4--tonUnued
BRACING METHODS 1
MEMODS,MATERIAL MIMMUMTHICKESS RGURF CONNECTION CRITERIA'
Faslarmrs
................................................
ftmal frame Wilk
......
PFB See Section 11602,10.6.2 See Section R602,10.6,2
hold-damns
.................
5
PFG
I'll HT See Section 8602,10.6.3 See Section 1160110.63
ponal frame at pil.q!"
CSAVSP 6"edges 12 Fie ld
Continuously sheathed
wood structural panel 15f32'
-4 44 -,4?+
0+404*704`1 '14 4
6"edges 12"Field
Confinuously sheathed � d,., .� ,,"
See Mclhcd CS-WSP See Method CS-WSP
w(Xid Structural panel
adjacent to garage
operrings
Confinuously sheathed Sc`Section R602,10,6.4 See Section 86d210.64
JXXU frame L502'
I 11I lonp W,0.1 kha
Cl CS-Sym, or- for It Par V,(I I dia
'2 1 lyi
Continuously shewlwd maximum 16" (h�l J�,"dlwk Shcjtfiing� 3-edges 6"field
-Ihoard spacing 4
Structural fibL stud spacii g2dvaniied rooting nails or
9d cownruen
42 It tong x 0,131"diia,l nails
.... ..............
Ai r S 1: 1 ine h=25 A or m,I foot=mrs mm-I dLg rue=0.0 175 rad.I pound per square foot=47.8 NIm 2-1 mile per hour=0.447 m/s.
a Adhesive attachment of wall sheathing including Method GB,shall not he permitted In Seismic Design Categories C,Do,D,and D2.
b.Applies to panels next to garage door opening where supporting gable end wall or roof load only.Shall only be used on one wall of the garage.In Seismic
Design Categories Do,D,and D2,roof covering dead load shall not exceed 3 psf.
c.Garage openings adjacent to a Method CS-G panel shall be provided with a header In accordance with Table R602.5(1).A full-height clear opening shall not
be permitted adjacent to a Method CS-G panel.
d.Method CS-SFB does not apply in Seismic Design Categories Do,D,and D2.
e.Method applies to detached one-and two-family dwellings in Seismic Design Categories Do through D2 only.
f.Nleifiod,,,OB and 11(31 brawl wall vancl Ww I aliusball Im cxcocd 1:1 ill SIX,F),,,D',or D mcflmls 1,113,DWS,SI'll,I'lls,ills,tend pFG art,not
rwrlurlicd in SIX"Va,Ih,L)r I)j.
&Use of slavles in braced u�Lanck.Lfrall be orohibillcd in D,or D,
ORDINANCE NO. 1525
Page 24 of 31
Figure R602.10.6.1 of the CRC is amended to read as follows:
POEL LEN=I PFR
TAW 8602 105 TOP PLATE SHAQjj&�QNJjEjnQ
OVER BRACED TALL PANEL
Ir ...................
STRILA:,T�JR.,\L PAdWEL FOR PANEL.SIPLACE OF PJEIEDIEI[))
SIHIEiATWIC ADJ 0�NING PA NE L ED G E S SE-0 LL m E E r
S ON CXJE F410E OVERAND BE FAS WHED TO COMM 0114
FRNMW.,'
,u DMOS MMa UnLARFIT . .........................
0C AT ANN EDGH F OR RNM r
STORW ,,tJD C 4 0 C PANEL EDGES
F'OR'W HE FPS1 UP 2 MYORIES
MRdu NI R I BLE R:CI02!fl)b I
IF 01P �HUOS UNDER HEADFAR AS REOURED h
FERMaTED TO BE kTbQE00VDR
VE WX0 UMXWWL"NEL,
FQNEL MUST 9E gar wcmEIc" 0 C AT SUPPORTS
TO COINCRE TG r 00flNO 01R
GOPXRE Q.FOUNIDATuON
NA L.A. C011#TWI NOUS,0',11ER
FRA OF 0 WA IL NF MR4 REWF ORONO OF FQUNDAW'�F
hi ONE 04 BAR TOP A"D BOTTOU LAP
DAR -M'E N11N11TJLT[J
. ......... 24"
-7
%
11MAIML TER ANC'HOIR: TARATALN FOOrIIFV 'SUE LJNE9IIEIR
819I1..TS WWFln FTETCNEEN 01PENNG U 3 12"N.17'-;-4+rH-'"7f,;44-";+
6'AND iT or EACH F NO Or 0040owt PF FF RM I I A I i
T I V SEGMENT 4%pW*NWjAv-
FIGURE R602A OKI
METHOD ABW---ALTERNATE BRACED WALL PANEL
ORDINANCE NO. 1525
Page 25 of 31
Figure R602.10.6.2 of the CRC is amended to read as follows:
EXTENT OF HEADER WITH DOUBLE PORTAL P ITW GRACED WALL PANi 1 141 — 41
OpsHro" FASTEN KING STUD
1OWALARWIIHO
II:N SION'l I HAP PI 0
I, IAr,,1 r Rap 1J,a^I;aN
I I WA I I opposm-SIT11,01;
nW
pmm
4� IF NEEDED,PANEL
SPLkCE EDGES SHAL1_
COMMONOROM OCCUR OVER AND BE
FASTENS HEATHING TO HEADER WITH 8D —fA,MF?4'OF
-9ANWi+4OXNNLSLN I'ORRI
NAILEDTOCOMMON ELATE W
IV amn w: PATTERN AS SHOWN BLOCKING WITHIN THE HEADER*11 H
3)ADIE MIDDLE24'OFTHE TWO
'HEADER TO JACK-STUD STRAP PEI PORTAL-LEG HEIGHT.
14� ROWS OF f6D
R602 106.4 ON BOTH SIDES OF OPEJqING
NALING IS REQUIRED y 0 C Typ.
OPPOSI HE SIDE OF%iEATM G ONE ROW OF YO,G. A� SINKER NAILS AT
V EAOi PANI I CI HA
j5f22'
MIN DOUBLE 2Y4 FRAMING TH MIN
MIN-*VV00V
'Ae-THICK WOOD STRUCTURAL PAELLS EATHING I Y F`ICAS POVa I A3 TIORUCHIPM
WITH 80 COMMON 0A 4&VMVF;0&)X NAILS AT FRAME ROO 110 10 PANEL
o �r O-C.IN ALL FRAMING(STU 09,BLOCKING,AND SHEATHING
%LL-)1YP.
MIN I ENGTH OF PANEL PER TABLE R602 105
hGM4*H 0444',k-9444
T
AW9 IPI 3500 0L%1 RAP,TYPT 1:",'A D POVON$ pI-H4Av4+F1 H"�,W4 6
III L hlfl�PDED I N q 0 CONrkll E AND NAILI 1)INTO 444-
FRAMING)
MIN REIM OFICING 04 1 OUNDATiON ONE 414 HAN
'TV W61
VOPANPKOTrk1qA(A h'i')HNG LAP L wS
ANO
lfl�'7,- '�7 1-7�77 1 7,7�57� 7
la
21��211—
MIN.FOOTING SIZE UNDER OPENING 18 12,02'XTURNE&
PPM I I I'le DIAME HER ANCHOR BOLT INSTALLED PER
5C OT 10N R4011 6-WrTH 2k2-"*AW PLATE WASHER
D-Cra=
FRONT ELEVATION SECTION
For SI: I inch=25.4 mm,I foot=304.8 ram.
FIGURE R602.10.6.2
METHOD PFH—PORTAL FRAME WrrH HOLD-DOWNS
AT DETACHED GARAGE DOOR OPENINGS
ORDINANCE NO. 1525
Page 26 of 31
Table R602.10.5 of the CRC is amended to read as follows:
TABLE R602.10.5
MINIMUM LENGTH OF BRACED WALL PANELS
MINIMUM LENGTH'
pnches)
METHOD CONTRIBUTING LENGTH
(See Table R602.10.4) Wall Height (Inches)
8 feet 9 feet 10 feet 11 feet 12 feet
DWB,WSP,SFB,PBS,PCP,HPS,BV-WSP 48 48 48 53 58 Actualb
GB 48 48 48 53 58 Double sided—Actual
Single sided=0.5 x Actual
LIB 55 62 69 NP NP 1 Actualb
SDC A,B and C,ultimate
design 28 32 34 38 42
wind speed<140 mph
ABW 48
SDC Da,DI and Dz,ultimate
design 32 32 34 NP NP
wind speed<140 mph
PFH Supporting roof only 4.6 2A 46 24 46 2A +F 19= -2*Z9_, 48
Supporting one story and roof 24 24 24 27` 29` 48
PFG 24 27 30 33d 36u 1.5 x Actualb
CS-G 24 27 30 33 36 Actualb
SDC A,B and C 16 18 20 22' 24e 1.5 x Actualb
CS-PF SDC Do,li and D
0 t z 46 2A 4g 21 28 24 24e Actualb
Adjacent clear opening height
(inches)
<_.64 24 27 30 33 36
68 26 271 30 33 36
72 27 27 30 33 36
76 30 1 29 30 33 36
80 32 30 30 33 36
84 35 32 32 33 36
88 38 35 33 33 36
92 43 37 35 35 36
96 48 41 38 36 36
CS-WSP,CS-SFB 100 44 40 38 38
104 49 43 40 39 Actualb
108 54 46 43 41
112 — 50 45 43
116 55 48 45
120 60 52 48
124 --- — -- 56 51
128 -- -- 61 54
132 ... .... 66 58
136 — 62
140 _.. 66
144 __ 72 ...
For SI: I inch=25.4 mm,1 foot=304.8 mm,1 mile per hour=0.•-47 m/s.
NP=Not Permitted.
a.Linear Interpolation shall be permltied.
b.Use the actual length where it is greater than or equal to the mlNmum length.
c.Maximum header height for PFH is 10 feet In accordance with Figure 8602.10.6.2,but wall height shall be permitted to be increased to 12 feet with pony wall.
d Maximum opening height for PFG is 10 feet In accordance with Figure R602,10.6.3,butwall height shall be permitted lobe Increased to 12 feet with pony wall,
e Maximurn opening height for GS-PF is 10 feet in accordancewi th Figure R602.10.6.4,but wall height shall be perud tied to be increased to 12 feet with pony wall.
ORDINANCE NO. 1525
Page 27 of 31
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, D1, or D2.
Figure R602.10.6.4 of the CRC is amended to read as follows:
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11 9V,WD # VR T LAP OVER IR&WAO m,M"If,001.✓R NV
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..,, &�91 �'^I� w"....,� �..„.. w•^� °„.,...w„„�.°„...�„ °,„�. ,°°°, a u.°vm a 1.:";, p^�1 I u I'."°,ua
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""• ".'V',„� II Id".d.,,II 11 m°11"'�uw' Ire V"I',NAY tl°"II II W��'�I'!,I�d'1111 111f1111,1111'1" �.m �I;,;,MII'�wm N ","IC'
111119 O FIL OVERIAPOPTICIN
4 .O""I IN'^1'�.�„V i.,."1;VVOIPoII OIp, 1111 -,....�_
IVrv�„u L.. ..Om,"�V"�IrvYd",p �m,yl�.'; a ��
SECTION
For 51: I inch 25.4 mm.I fool=_ .8 mm.
FIGURE 2.10.6.4
METHOD CS- F-CONTINUOUSLY SHEATHED PORTAL FRAME PANEL CONSTRUCTION
ORDINANCE NO. 1525
Page 28 of 31
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 8606.12.2.2.2 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.
Exception of Section R602.3.2 and Table R602.3.2 of the CRC is amended to
read as follows:
R602.3.2 Single top plate
Exception: 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.
ORDINANCE NO. 1525
Page 29 of 31
TABLE R602.3.2
SINGLE TOP-PLATE SPLICE CONNECTION DETAILS
TOP-PLATE SPLICE LOCATION
CONDITION l Corners anti Irdersecting walls sunjolms in stfalght walls
Spike playa size Minimum nails Splice Plato size Minimum nails
each side ofjoint each side ofjoint
Structures In SDC A-C;tottHo,4A4 m 3'x 6"x 0,036" 3' x 12"x 0,036"
(6)8d box (12)(12)8d box
Dt-L)t ffg galvanized steel plate galvanized steel plate.
stsfteff#4-"tw+-�4a41-e4 I or equivalent W/Z X 0.113")nails or equivalent
(21/2"X 0.113`7 nalls
............
S4f+io+"f�Hl*-mS'4A-Zlo�md LA,wM XLX 9 ror' 0.4+ ", 1
, , U
XW 49+lsW1 . ,
1"'xPl S1 I I Itch I mm"I tool ;W 18 mm.
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 withSection R503.2.4.
Section R1001.3.1 of the CRC is amended to read as follows:
R1001.3.1 Vertical reinforcing.
For chimneys up to 40 inches (11016 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 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
(114 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.
ORDINANCE NO. 1525
Page 30 of 31
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 : 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 6: Publication. The City Clerk is directed to certify the passage and adoption
of this Ordinance; cause it to be entered into the City of El 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.
SECTION 9: Effective Date. This Ordinance will become effective on the 31St day
following its passage and adoption.
SECTION 15: Filing with Building Standards Commission. The City Clerk must file a certified
copy of this Ordinance with the California Building Standards Commission.
ORDINANCE NO. 1525
Page 31 of 31
PASSED, APPROVED, AND ADOPTED ORDINANCE No. 1525 this 6th day of
December, 2016. pp
dlhh
za
u
ni Fuentes, Mayor
APPROVED AS TO FORM
Mark D, Hensley, ty torney
ATTEST:
STATE OF CALIFORNIA
COUNTY OF LOS ANGELES ), SS
CITY OF EL SEGUNDO )i
I, Tracy Weaver, City Clerk of the City of El Segundo, California, do herby certify that the
whole number of members of the City Council of said City is five; that the foregoing
Ordinance No. 1525 was duly introduced by said City Council at a regular meeting held
on the 1 st day of November, 2016, 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 6th day of December, 2016, and the same was so
passed and adopted by the following vote:
AYES: Mayor Fuentes, Mayor Pro Tern Boyles, Council Member Dugan and
Council Member Pirsztuk
NOES: None
ABSENT: Council Member Brann
ABSTAIN: None
Tr y�* er, it Clerk(° F