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301.1.4.1 Compliance With IBC Level Seismic Forces
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Where compliance with the seismic design provisions of the International Building Code is required, the procedures shall be in accordance with one of the following:
- One-hundred percent of the values in the International Building Code. Where the existing seismic force-resisting system is a type that can be designated as "Ordinary," values of R, Ω0 and Cd used for analysis in accordance with Chapter 16 of the International Building Code shall be those specified for structural systems classified as "Ordinary" in accordance with Table 12.2-1 of ASCE 7, unless it can be demonstrated that the structural system will provide performance equivalent to that of a "Detailed," "Intermediate" or "Special" system.
- Compliance with ASCE 41 using both the BSE-1 and BSE-2 earthquake hazard levels and the corresponding performance levels shown in Table 301.1.4.1.
| RISK CATEGORY (Based on IBC Table 1604.5 ) |
PERFORMANCE LEVEL FOR USE WITH ASCE 41 BSE-1 EARTHQUAKE HAZARD LEVEL |
PERFORMANCE LEVEL FOR USE WITH ASCE 41 BSE-2 EARTHQUAKE 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) |
- Acceptance criteria for Risk Category III shall be taken as 80 percent of the acceptance criteria specified for Risk Category II performance levels, but need not be less than the acceptance criteria specified for Risk Category IV performance levels.
Related Code Sections
301.1.4.1 Compliance Methods, Compliance With IBC Level Seismic Forces
301.1.4.1 PERFORMANCE CRITERIA FOR IBC—LEVEL SEISMIC FORCES OCCUPANCY
RISK CATEGORY (Based on IBC Table 1604.5 )
PERFORMANCE LEVEL FOR ...
Existing Building Code 2012 of Tennessee > 3 Compliance Methods > 301 Compliance Methods > 301.1 General > 301.1.4 Evaluation and Design Procedures > 301.1.4.1 Compliance With IBC Level Seismic Forces
907.4.5 Alterations—Level 3, Bracing for Unreinforced Masonry Parapets
to resist the reduced IBC-level seismic forces, unless an evaluation demonstrates compliance of such items ...
Existing Building Code 2012 of Tennessee > 9 Alterations—Level 3 > 907 Structural > 907.4 Existing Structural Elements Resisting Lateral Loads > 907.4.5 Bracing for Unreinforced Masonry Parapets
Section 907 Alterations—Level 3, Structural
anchors at the roof line to resist the reduced IBC-level seismic forces, unless an evaluation demonstrates compliance of existing wall anchorage ...
907.4.4 Alterations—Level 3, Wall Anchors for Concrete and Masonry Buildings
at the roof line to resist the reduced IBC-level seismic forces, unless an evaluation demonstrates compliance of existing wall anchorage ...
Existing Building Code 2012 of Tennessee > 9 Alterations—Level 3 > 907 Structural > 907.4 Existing Structural Elements Resisting Lateral Loads > 907.4.4 Wall Anchors for Concrete and Masonry Buildings
807.5 Alterations—Level 2, Existing Structural Elements Resisting Lateral Loads
provisions of the International Building Code and the reduced IBC-level seismic forces. Any existing lateral load-resisting structural elements whose demand ...
Existing Building Code 2012 of Tennessee > 8 Alterations—Level 2 > 807 Structural > 807.5 Existing Structural Elements Resisting Lateral Loads