ICONS
SH = Limited Damage
HR = Controlled Damage
LAM = Pre-Collapse
TBDY Section 15.3. DAMAGE LIMITS ON BUILDING ELEMENTS AND DAMAGE ZONES
15.3.1. Sectional Damage Cases
For ductile elements, three damage conditions and damage limits are defined at the section level. These are the Limited Damage (SH), Controlled Damage (KH) and Pre-Failure Damage (LO) states and their limit values. Limited damage defines limited inelastic behavior in the relevant section, inelastic behavior where controlled damage section strength can be safely provided, and pre-collapse damage state defines advanced inelastic behavior in the section. This classification does not apply to fragile damaged elements.
15.3.2. Section Damage Zones
Elements whose critical section damage does not reach SH are located in the Restricted Damage Zone , the elements between SH and KH are in the Significant Damage Zone , the elements between KH and PO are in the Advanced Damage Zone , and the elements exceeding the DE are in the Migration Zone . (Figure 15.1) .
15.3.3. Identification of Section and Element Damages
As a result of comparing the internal forces and / or deformations calculated by the methods defined in 15.5 or 15.6 with the numerical values defined in 15.3.1 to correspond to the section damage limits, it will be decided in which damage regions the sections are. Element damage will be determined based on the most damaged section of the element.