245 ORDINANCE NO. 245
AN ORINANCE OF THE CITY OF GRAND TERRACE AMENDING CHAPTER
15.09.20 CALIFORNIA EXISTING BUILDING CODE, TITLE 15 CHAPTERS
15.09.20 OF THE GRAND TERRACE MUNICIPAL CODE RELATING TO
REPAIRS OF DAMAGED STRUCTURES.
The City Council of the City of Grand Terrace, State of California, does ordain as
follows:
Section 1. Title 15, Chapter 15.09.20 of the City of Grand Terrace Municipal
Code is amended to read as follows:
Chapter 15.09.20, AMENDMENTS TO THE CALIFORNIA EXISTING
BUILDING CODE.
Chapter 15.09.30,ADOPTION AND INTENT
This chapter establishes regulations as amended to the building code for the expeditious
repair of damaged structures. In the event an amendment to the California Building
Standards Code result in differences between these building standards and the California
Building Standards Code, the text of these building standards shall govern. In
accordance with California Health and Safety Code Section 17958.7 express findings that
' modifications to the California Building Standards Code are reasonably necessary
because of local climatic, geological or topographical conditions are either already on file
with the California Building Standards Commission, or will be filed prior to the effective
date of ordinance codified in this article. In accordance with California Government
Code Section 50022.6, at least one true copy of the California Building Code has been on
file with the City Clerks office fifteen (15) days prior to enactment of the ordinance
codified in this Article. While this Article is in force, a true copy of this Chapter shall be
kept for public inspection in the office of the City Clerk. A reasonable supply of this
Chapter shall be available in the office of the City Clerk for public purchase.
Chapter 15.09.40, DEFINITIONS
For the purpose of this chapter, the following definition applies and is hereby added to
Section 3402.1 Definitions of the 2007 California Building Code (CBC):
Substantial Structural Damage. A condition where:
1. In any story, the vertical elements of the lateral-force-load resisting
system, have suffered damage such that the lateral load-carrying capacity
of the structure in any direction has been reduced by more than 20 percent
from its pre-damaged condition, or
2. The capacity of any vertical gravity load-carrying component, or any
group of such components, that support more than 30 percent of the total
1
tion
Measures Incorporated,"describe the mitigation measures which were incorporated or
refined from the earlier document and the extent to which they address site-specific
conditions for the project.
6) Lead agencies are encouraged to incorporate into the checklist references to information sources
for potential impacts(e.g., general plans, zoning ordinances). Reference to a previously prepared
or outside document should, where appropriate, include a reference to the page or pages where
the statement is substantiated.
7) Supporting Information Sources: A source list should be attached, and other sources used or
individuals contacted should be cited in the discussion.
InitialStudyZ-06-02.3 wpd-10,20/03 -4-
amount it would have cost the subdivider to install such improvements to serve
the subdivision only and the actual cost of such improvements.
October 12, 2010
Page 65 of 74
October 12, 2010
Page 40 of 74
-25- December 14,2010
development director shall again determine whether the application is complete.
Page35of43
upp. 1140 (E.D. Tenn. 1995);
Page 9 of 43
o not adequately protect the health, safety, and general welfare of
Page 6 of 43
' cases of congenital syphilis, were reported for Los Angeles County residents, while the
2010 Communicable Diseases Report reported 355 cases of hepatitis B were reported
Page 2 of 43
area of the structure's floor(s) and roof(s) has been reduced more than 20
percent from its pre-damaged condition, and the remaining capacity of
such affected elements with respect to all dead and live loads is less than
75 percent of that required by the building code for new buildings of
similar structure,purpose, and location.
Chapter 15.09.50 REPAIRS
For the purpose of this chapter, the following repair requirements are hereby added as a
new Subsection 3403.5 to 3403 Additions, Alterations or Repairs in the 2007 California
Building Code (CBC).
3403.5.1 Repairs. Repairs of structural elements shall comply with this section.
3403.5.1.1 Seismic evaluation and design. Seismic evaluation and design of an existing
building and its components shall be based on the following criteria.
3403.5.1.1.1 Evaluation and design procedures. The seismic evaluation and design
shall be based on the procedures specified in the building code, ASCE 31 Seismic
Evaluation of Existing Buildings (for evaluation only) or ASCE 41 Seismic Rehabilitation
of Existing Buildings. The procedures contained in Appendix A of the International
Existing Building Code shall be permitted to be used as specified in Section 3403.5.1.1.3.
3403.5.1.1.2 CBC level seismic forces. When seismic forces are required to meet the
building code level, they shall be one of the following:
1. 100 percent of the values in the building code. The R factor used
for analysis in accordance with Chapter 16 of the code shall be the
R factor specified for structural systems classified as "Ordinary"
unless it can be demonstrated that the structural system satisfies the
proportioning and detailing requirements for systems classified as
"Intermediate" or"special".
2. Forces corresponding to BSE-1 and BSE-2 Earthquake Hazard
Levels defined in ACSE 41. Where ASCE 41 is used, the
corresponding performance levels shall be those shown in Table
3403.5.1.1.2.
2
Damage. A condition where:
1. In any story, the vertical elements of the lateral-force-load resisting
system, have suffered damage such that the lateral load-carrying capacity
of the structure in any direction has been reduced by more than 20 percent
from its pre-damaged condition, or
2. The capacity of any vertical gravity load-carrying component, or any
group of such components, that support more than 30 percent of the total
1
tion
Measures Incorporated,"describe the mitigation measures which were incorporated or
refined from the earlier document and the extent to which they address site-specific
conditions for the project.
6) Lead agencies are encouraged to incorporate into the checklist references to information sources
for potential impacts(e.g., general plans, zoning ordinances). Reference to a previously prepared
or outside document should, where appropriate, include a reference to the page or pages where
the statement is substantiated.
7) Supporting Information Sources: A source list should be attached, and other sources used or
individuals contacted should be cited in the discussion.
InitialStudyZ-06-02.3 wpd-10,20/03 -4-
amount it would have cost the subdivider to install such improvements to serve
the subdivision only and the actual cost of such improvements.
October 12, 2010
Page 65 of 74
October 12, 2010
Page 40 of 74
-25- December 14,2010
development director shall again determine whether the application is complete.
Page35of43
upp. 1140 (E.D. Tenn. 1995);
Page 9 of 43
o not adequately protect the health, safety, and general welfare of
Page 6 of 43
' cases of congenital syphilis, were reported for Los Angeles County residents, while the
2010 Communicable Diseases Report reported 355 cases of hepatitis B were reported
Page 2 of 43
TABLE 3403.5.1.1.2
ASCE 41 AND ASCE 31 PERFORMANCE LEVELS
OCCUPANCY CATIGORY PERFORMANCE LEVEL FOR USE WITH PEFORMANCE LEVEL FOR USE
(BASED ON IBC TABLE ASCE 31 AND WITH ASCE 41 BSE-1 WITH ASCE 41 BSE -2
1604.5) EARTHQUAKE EARTHQUAKE HAZARD LEVEL
HAZARD LEVEL
I Life Safety(LS) Collapse Prevention(CP)
II Life Safety(LS) Collapse Prevention(CP)
III Note(a) Note(a)
IV Immediate Occupancy(IO) Life Safety(LS)
a.Performance Levels for Occupancy Category III shall be taken as halfway between the performance levels specified for
Occupancy Category II and Occupancy Category IV.
3403.5.1.1.3 Reduced CBC level seismic forces. When seismic forces are permitted to
meet reduced code levels, they shall be one of the following:
1. 75 percent of the forces prescribed in the building code. The R factor used for
analysis in accordance with Chapter 16 of the building code shall be the R factor
used for factor as specified in Section 3403.5.1.1.2.
2. In accordance with the applicable chapters in Appendix A of the International
Existing Building Code as specified in Items 2.1 through 2.5 below. Structures or
portions of structures that comply with the requirements of the applicable chapter
in Appendix A shall be deemed to comply with the requirements for reduced
) building code forces levels.
2.1 The seismic evaluation and design of unreinforced masonry bearing wall
buildings in Occupancy Category I or II are permitted to be based on the
procedures specified in Appendix Chapter Al.
2.2 Seismic evaluation and design of the wall anchorage system in reinforced
concrete and reinforced masonry wall buildings with flexible diaphragms
in Occupancy Category I and II are permitted to be based on the
procedures specified in Appendix Chapter A2.
2.3 Seismic evaluation and design of cripple walls and sill plate anchorage in
residential buildings of light-framed wood construction in Occupancy
Category I and II are permitted to be based on the procedures specified in
Appendix Chapter A3.
2.4 Seismic evaluation and design of soft, weak, or open-front wall conditions
in multiunit residential buildings of wood construction in Occupancy
Category I and II are permitted to be based on the procedures specified in
Appendix Chapter A4.
2.5 Seismic evaluation and design of concrete buildings and concrete with
masonry infill buildings in all Occupancy Categories are permitted to be
based on the procedures specified in Appendix Chapter A5.
3. In accordance with ASCE 31 based on the applicable performance level as shown
in Table 3403.5.1.1.2.
3
al impacts(e.g., general plans, zoning ordinances). Reference to a previously prepared
or outside document should, where appropriate, include a reference to the page or pages where
the statement is substantiated.
7) Supporting Information Sources: A source list should be attached, and other sources used or
individuals contacted should be cited in the discussion.
InitialStudyZ-06-02.3 wpd-10,20/03 -4-
amount it would have cost the subdivider to install such improvements to serve
the subdivision only and the actual cost of such improvements.
October 12, 2010
Page 65 of 74
October 12, 2010
Page 40 of 74
-25- December 14,2010
development director shall again determine whether the application is complete.
Page35of43
upp. 1140 (E.D. Tenn. 1995);
Page 9 of 43
o not adequately protect the health, safety, and general welfare of
Page 6 of 43
' cases of congenital syphilis, were reported for Los Angeles County residents, while the
2010 Communicable Diseases Report reported 355 cases of hepatitis B were reported
Page 2 of 43
4. Those associated with BSE-1 Earthquake Hazard Level defined in ASCE 41 and
the performance level as shown in Table 3403.5.1.1.2. Where ASCE 41 is used,
the design spectral response acceleration parameters Sxs and Sxi shall not be taken
less than 75 percent of the respective design spectral response acceleration
parameters SDS and SDI defined by the International Building Code and its
reference standards.
3403.5.1.2 Wind design. Wind design of existing buildings shall be based on the
procedures specified in the building code.
3403.5.2 Repairs to damaged buildings. Repairs to damaged buildings shall comply
with this section.
3403.5.2.1 Unsafe conditions. Regardless of the extent of structural damage, unsafe
conditions shall be eliminated.
3403.5.2.2 Substantial structural damage to vertical elements of the force-resisting
systems. A building that has sustained substantial structural damage to the vertical
elements of its lateral-force-resisting system shall be evaluated and repaired in
accordance with the applicable provisions of Section 3403.5.2.2.1 through 3403.5.2.2.3.
3403.5.2.2.1 Evaluation. The building shall be evaluated by a registered design
professional, and the evaluation findings shall be submitted to the code official. The
evaluation shall establish whether the damaged building, if repaired to its pre-damaged
state, would comply with the provisions of the building code. Seismic forces for this
evaluation are permitted to be the reduced level seismic forces specified in the code
Section 3403.5.1.1.3.
3403.5.2.2.2 Extent of repair for compliant buildings. If the evaluation established
compliance of the pre-damaged building in accordance with Section 3403.5.2.2.1, then
repairs shall be permitted that restore the building to its pre-damaged state, using
materials and strengths that existed prior to the damage.
3403.5.2.2.3 Extent of repair for non-compliant buildings. If the evaluation does not
establish compliance of the pre-damage building in accordance with Section
3403.5.2.2.1, then the building shall be rehabilitated to comply with applicable provisions
of the building code for load combinations including wind or seismic forces. The wind
design level for the repair shall be as required by the building code in effect at the time of
original construction unless the damage was caused by wind, in which case the design
level shall be as required by the code in effect at the of the original construction or as
required by the building code, whichever is greater. Seismic forces for this rehabilitation
design shall be those required for the design of the predamaged building, but not less than
the reduced level seismic forces specified in Section 3403.5.1.1.3. New structural
members and connections required by this rehabilitation design shall comply with the
detailing provisions of the building code for new buildings and similar structure,purpose,
and location.
4
ges where
the statement is substantiated.
7) Supporting Information Sources: A source list should be attached, and other sources used or
individuals contacted should be cited in the discussion.
InitialStudyZ-06-02.3 wpd-10,20/03 -4-
amount it would have cost the subdivider to install such improvements to serve
the subdivision only and the actual cost of such improvements.
October 12, 2010
Page 65 of 74
October 12, 2010
Page 40 of 74
-25- December 14,2010
development director shall again determine whether the application is complete.
Page35of43
upp. 1140 (E.D. Tenn. 1995);
Page 9 of 43
o not adequately protect the health, safety, and general welfare of
Page 6 of 43
' cases of congenital syphilis, were reported for Los Angeles County residents, while the
2010 Communicable Diseases Report reported 355 cases of hepatitis B were reported
Page 2 of 43
3403.5.2.3 Substandard structural damage to vertical load-carrying components.
Vertical load-carrying components that have sustained substantial damage shall be
rehabilitated to comply with the applicable provisions for dead and live loads in the
building code. Undamaged vertical load-carrying components that receive dead or live
loads of the rehabilitation components shall also be rehabilitated to carry the design loads
of the rehabilitation design. New structural members and connections required by this
rehabilitation design shall comply with the detailing provisions of the building code for
new buildings of similar structure, purpose, and location.
3403.5.2.3.1 Lateral force-resisting elements. Regardless of the level of damage to
vertical elements of the lateral force-resisting system, if substantial structural damage to
vertical load-carrying components was caused primarily by wind or seismic effects, then
the building shall be evaluated in accordance with Section 3403.5.2.2.1 and, if non-
compliant, rehabilitated in accordance with Section 3403.5.2.2.3.
3403.5.2.4 Less than substantial structural damage. For damage less than substantial
structural damage, repairs shall be allowed that restore the building to its pre-damaged
state, using materials and strengths that existed prior to the damage. New structural
members and connections used for this repair shall comply with the detailing provisions
of the building code for new buildings of similar structure,purpose, and location.
3403.5.3 Referenced Standards
Standard Referenced
Reference In Code
Number Title Section Number
ASCE 31-03 Seismic Evaluation of Existing Buildings 3403.5.1.1.1,
Table 3403.5.1.1.2,
3403.5.1.1.3
ASCE 41-06 Seismic Rehabilitation of Existing Buildings 3403.5.1.1.1,
3403.5.1.1.2,
3403.5.1.1.3
SECTION 2. This ordinance shall take effect 30 days from the date of adoption.
SECTION 3. First read at a regular meeting of the City Council of said City held on the
27th day of January, 2009, and finally adopted and ordered posted at a regular meeting of
said City Council on the 10th day of February, 2009.
Mayor o he City of Grand Terrace
and oft e City Council thereof.
5
original construction unless the damage was caused by wind, in which case the design
level shall be as required by the code in effect at the of the original construction or as
required by the building code, whichever is greater. Seismic forces for this rehabilitation
design shall be those required for the design of the predamaged building, but not less than
the reduced level seismic forces specified in Section 3403.5.1.1.3. New structural
members and connections required by this rehabilitation design shall comply with the
detailing provisions of the building code for new buildings and similar structure,purpose,
and location.
4
ges where
the statement is substantiated.
7) Supporting Information Sources: A source list should be attached, and other sources used or
individuals contacted should be cited in the discussion.
InitialStudyZ-06-02.3 wpd-10,20/03 -4-
amount it would have cost the subdivider to install such improvements to serve
the subdivision only and the actual cost of such improvements.
October 12, 2010
Page 65 of 74
October 12, 2010
Page 40 of 74
-25- December 14,2010
development director shall again determine whether the application is complete.
Page35of43
upp. 1140 (E.D. Tenn. 1995);
Page 9 of 43
o not adequately protect the health, safety, and general welfare of
Page 6 of 43
' cases of congenital syphilis, were reported for Los Angeles County residents, while the
2010 Communicable Diseases Report reported 355 cases of hepatitis B were reported
Page 2 of 43
Attest:
Brenda Mesa, City Clerk
I, Brenda Mesa, City Clerk of the City of Grand Terrace, California, do hereby
certify that the foregoing Ordinance was introduced and adopted at a regular meeting of
the City Council of the City of Grand Terrace held on the 10th day of February, 2009,by
the following vote:
AYES: Councilmembers Cortes, Miller and Stanckiewitz; Mayor?Pro Tem Garc:
and Mayor Ferre
NOES: None
ABSENT: None
ABSTAIN: None
Brenda Mesa, City Clerk
Ap roved a to form:
)
John Harper, ity ttorney
6
levels even if mineral resources were to occur.
X b)There are no known"locally important mineral resource recovery sites"noted on any adopted
plan for the City of Grand Terrace.
Finding for X a-b: No Impact. No mitigation is required.
•
InitialStudyZ-06-02.3. -10i 20/03 -20-