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Is a safety assessment still required after a building has been renovated?
Release Date:
2020/02/18
Converting factory buildings into restaurants, warehouses into offices, and residential buildings into schools are all common examples of building renovation today, and such renovations have become a major trend in recent years.
However, even simple renovations cannot be put into use immediately; they must first undergo inspection and appraisal by a qualified testing and appraisal agency before being approved for use. So, what specific safety assessments are required after a building has been renovated?
First, a housing safety inspection must be conducted.
Employing a suite of testing instruments, equipment, tools, and software-based verification techniques, the physical and chemical properties—both external and internal—of existing construction materials are assessed, and the resulting test data are subsequently processed, refined, and analyzed.
Building safety assessment is primarily conducted through investigation, on-site inspection, and structural analysis and verification to determine the safety of a building. It is mainly applicable to buildings where safety hazards or signs of danger have been identified, or where there is other need to evaluate the building’s safety rating (and is suitable for purposes such as filing for construction supervision and obtaining property ownership certificates).
Secondly, conduct an assessment of the building’s seismic resistance rating.
Changes in a building’s intended use can alter its seismic performance rating, as the original seismic capacity may no longer be sufficient to meet the demands of its current functional requirements. Seismic evaluation of a building involves assessing the existing structural condition and, in accordance with prescribed seismic design codes, determining the building’s safety under seismic actions at the specified design intensity. Based on the results of this assessment, the building is then assigned an appropriate seismic performance category.
Finally, optimization and reinforcement recommendations for the renovation plan are proposed.
During the construction of a building, when work is suspended and later resumed, or during its use, if there is a need to add floors, insert intermediate floors, carry out extensions, or make substantial changes to the structural system or functional use—i.e., undertake major renovation works—it is necessary to conduct a structural safety assessment and an seismic evaluation of the existing building. These assessments should comprehensively evaluate the structural safety of the building after renovation and, where necessary, propose optimized renovation design solutions as well as recommendations for strengthening the original structure.
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