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// CODE SNIPPET

[BS] 503.13 Voluntary Lateral Force-Resisting System Alterations

California Existing Building Code 2019 > 5 Prescriptive Compliance Method > 503 Alterations > 503.13 Voluntary Lateral Force-Resisting System Alterations
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Structural alterations that are intended exclusively to improve the lateral force-resisting system and are not required by other sections of this code shall not be required to meet the requirements of Section 1609 or Section 1613 of the California Building Code, provided that all of the following apply:

  1. The capacity of existing structural systems to resist forces is not reduced.
  2. New structural elements are detailed and connected to existing or new structural elements as required by the California Building Code for new construction.
  3. New or relocated nonstructural elements are detailed and connected to existing or new structural elements as required by the California Building Code for new construction.
  4. The alterations do not create a structural irregularity as defined in ASCE 7 or make an existing structural irregularity more severe.

Related Code Sections


503.13 Prescriptive Compliance Method, Voluntary Lateral Force-Resisting System Alterations
Structural alterations that are intended exclusively to improve the lateral force-resisting system and are not required by other sections ...
California Existing Building Code 2019 > 5 Prescriptive Compliance Method > 503 Alterations > 503.13 Voluntary Lateral Force-Resisting System Alterations
4-309 Administrative Regulations for the Division of the State Architect—Structural Safety (DSA-SS), Reconstruction or Alteration Projects in Excess of $100,000 in Cost
results in a structure being reclassified to a higher risk category. Voluntary lateral force-resisting system modifications. Alterations to existing ...
California Administrative Code 2019 > 4 Administrative Regulations for the Division of the State Architect—Structural Safety (DSA-SS) > 1 General Provisions > 4-309 Reconstruction or Alteration Projects in Excess of $100,000 in Cost
4-309 Safety of Construction of Public Schools, Reconstruction or Alteration Projects in Excess of $100,000 in Cost
, alteration or addition project need not include the cost of voluntary lateral force-resisting system modifications in accordance with Section 4-309(d ...
California Administrative Code 2016 > 1 Safety of Construction of Public Schools > 1 General Provisions > 4-309 Reconstruction or Alteration Projects in Excess of $100,000 in Cost
3404A.5 Existing Structures, Voluntary Seismic Improvements
for the purpose of improving the performance of the seismic force-resisting system of an existing structure or the performance of seismic bracing ...
California Building Code 2016 (Vol 1 & 2) > 34A Existing Structures > 3404A Alterations > 3404A.5 Voluntary Seismic Improvements
403.9 Prescriptive Compliance Method, Voluntary Seismic Improvements
for the purpose of improving the performance of the seismic force-resisting system of an existing structure or the performance of seismic bracing ...
California Existing Building Code 2016 > 4 Prescriptive Compliance Method > 403 Alterations > 403.9 Voluntary Seismic Improvements
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