.. _NSCEAssessmentPhase-label: ========================= Phase 4 - NSCE assessment ========================= Phase 4 concerns the assessment of the non-seismic structural elements (NSCE), in this phase the generic risk assessment is performed and if required an NLKA. The assessment is reported in this phase in the TVA appendix C2. .. figure:: _static/phase4/WorkflowPhase4.png :align: center Phase 4 - NSCE assessment. .. _StepA9-label: ------------------------ Step A9: NSCE assessment ------------------------ Both structural and non-structural elements of the building should be evaluated for the seismic actions in the out-of-plane (OOP). In the OOP assessment, the element is evaluated to observe if it can sustain seismic load due to its own weight in its weak direction. The OOP for structural and non-structural members of the building should be calculated in a separate table, because they correspond to different return periods and the consequences of failure might be different. Regarding non-structural elements, in The Netherlands, cavity walls are common (example: terraced houses largely widespread in Groningen). A cavity wall consists of two walls (named leaves) separated by a cavity of usually 80 mm to 100 mm. The inner leaf is generally made in calcium silicate bricks and the outer leaf is made usually in clay bricks (this is the wall viewed from the outside of the building). The inner and the outer leaf are then connected by wall ties in order to act together as one wall, but in most of the cases, due to the age of the building, the wall ties can be damaged and corroded, and therefore not sufficient anymore (good state of anchors should be assessed by inspections). In NLTH they are other non-structural risky elements to evaluate for the OOP are chimneys and gables. The procedure to perform the NLKA is described in the how to guide: :ref:`NLKA_assessment-label` .. _StepR1-label: ---------------------------------- Step R2: Reporting NSCE assessment ---------------------------------- This step concerns the reporting of the NSCE assessment for the non-modelled elements. Any NSCE that is part of the model will be assessed in the next phase in TVA appendix C1. In this phase only the appendix C2 is created for the TVA. .. note:: This protocol describes the appendices required for the **latest** tender specification ('vraagspecificatie'). Older specifications might have a different table of contents and the information required might be different. The NSCE assessment is added to the report per element. The name and a picture should indicate clearly what element is concerned. The table underneath provides a clear overview of the inputs for the NSCE assessment. There are two options for this, the elements assessed with the general risk assessment and the elements for NLKA. The pdf of the excel-file of L4-sheet or other tools should be added at the end of the appendix. Refer to the knowledge sharing on this topic: `LINK `_ --------------------- After completing all the steps of the BSC reporting model phase you can continue working on the `'Strengthening phase' `_.