UFC 4-023-03
25 January 2005
Figure 2-2 Design Process for LLOP in New and Existing Construction
Low Level of Protection
For New Construction, Design
Structure Conventionally
Check Horizontal Tie Forces
Re-Design or Retrofit
Deficient Members
All Pass?
No
Yes
Check Vertical Tie Forces
Re-Design or Retrofit
Deficient Members
OR
No
All Pass?
Apply Alternate Path Method for
Removal of Each Deficient
Yes
Member, One at a Time.
Re-Design or
Retrofit Structure
Damage Limits
Done
Yes
No
Satisfied for Each
Removal Case?
2-3
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