Issue 47

M. Marchelli et alii, Frattura ed Integrità Strutturale, 47 (2019) 437-450; DOI: 10.3221/IGF-ESIS.47.34 445 Component Local or potential damage CoI Wire mesh Significant amount of debris in a portion defined with 4 anchors Presence of debris in the mesh Presence of weeds, bushes or trees interacting with the mesh Lacerations in the mesh Deformations or bowing of the mesh Presence of corrosion and/or removal of the corrosion protections of the mesh C3 C1 C1 C3 C3 C1 Top rope Absence of the rope Presence of corroded zones and/or significant damage of the rope Absence of the anchors Missing rope-anchors connection elements Corrosion of the anchors Damage on the plate and/or on the head of the anchors Unthreading of the anchors C2 C3 C3 C3 C1 C2 C3 Bottom rope Absence of the rope Presence of corroded zones and/or significant damage of the rope Partially visible rope as hidden by debris/vegetation Non-visible anchor Absence of the anchors Missing rope-anchors connection elements Corrosion of the anchors Damage on the plate and/or on the head of the anchors Unthreading of the anchors C2 C1 C2 C1 C1 C1 C1 C1 C1 Support ropes Presence of corroded zones and/or significant damage of the rope Absence of the rope Absence of the anchors Missing rope-anchors connection elements Corrosion of the anchors Damage on the plate and/or on the head of the anchors Unthreading of the anchors C1 C3 C3 C3 C1 C2 C3 Connection between mesh panels Missing elements Presence of corroded zones and/or damages of the connection elements C3 C2 Mesh-top rope connection Missing elements Presence of corroded zones and/or damages of the connection elements C3 C2 Mesh-bottom rope connection Missing elements Presence of corroded zones and/or damages of the connection elements C2 C1 Table 4: Classes of importances (CoI) for the assessment of the residual efficiency for all the considered components in reinforced drapery net systems (maximum equal to 109). Damage level Mesh & Ropes Anchors & Connectsions D0 The considered damage is absent or limited to a very reduced portion (up to 25%) None of the parts is damaged. The element is present D1 The considered damage is diffused (from 25% to 75%) A slight or intermediate of damage is present, at least in one anchor or connection D2 A large part of the component is affected by the considered damage (from 75%) At least one part is damaged. The element is absent. Table 5 : Damage levels on the components of a drapery system.