What is the difference between CIS and a static test certificate?
The two types of certificate, although both attesting to structural safety, they are not identical or replaced each otherOn the contrary, they are requested in specific and different situations and contexts. First of all, there is a difference regarding the titles of the technician in charge of drawing up the certificate, always a Graduated in Engineering or Architecture with experience In the field of civil structures: in the case of the CIS, a minimum limit of enrollment in the professional order is not required, while for the static test certificate The test driver must have at least 10 years of registration.
The static test certificate is mandatory To verify the correct design and execution of the structures of a new construction, an expansion or an intervention for improvement / seismic adaptation. The static test driver is also engaged in checks during the execution of the works, where the obligation to withdraw in the construction site of the samples of structural material to be tested in the laboratory (concrete cubes, armor bar etc …) and load tests on the final structures is also provided. The static test certifies the correspondence to the structural safety requirements of the building requested by the technical standards, also with regard to seismic action. Without the test certificate, the work cannot enter into operation.
The CIS instead represents a verification with less rigorous procedures Compared to the static testing, mainly concerning existing buildings that need further assessment of structural safety in the absence of the static test at the time of their construction, or in correspondence with sanatorium actions posthumously to the construction of the work. The CIS cannot replace the static test certificate, especially for new constructions or heavy renovations.
What aspects does the certificate of static suitability verifies?
The structural technician, on the basis of the design documentation available at the Municipality (including any variants), must carry out an in -depth inspection of the property To understand its building history and visually check if each structural element demonstrates integrity or injuries, consequently relating its final evaluation.
In case of critical issuesthe CIS will have a negative outcome (total or partial) and must report the static reinforcement works that the technician considers necessary to achieve static suitability. Visual inspection must be extended to the entire structure, including also the inflatings or other elements which, although not structural, can still manifest damage attributable to movements and forces suffered by the structural frame. As an example, safety for the breakthrough for the floral and false ceiling will also be evaluated, to be analyzed by means of a thermoque. The verification is also extended to the safety of the terrain on which the construction is based, consulting the geological relationship (if present) or the opinion of an geologist.
The evaluation of the static suitability must also consider the Tests in situ and/or laboratory On the materials that the technician considers indispensable if those performed at the time of construction are insufficient, or to evaluate their state of conservation in the event of material degradation. In the CIS, the constructive technique of the property must be explicit (reinforced concrete, masonry, wood, steel) and the static scheme, evaluating its congruity with the intended use through analysis and numerical checks of the supporting structures.
After carrying out all the checks, tests on the materials and calculations necessary, the structural technician certifies the static suitability according to which the property is safe from a static point of view, in reference to the requests of the Technical standards of the time and for the intended use so it was built. Or certifies its non -suitability by prescribing the necessary consolidation works. This certification, as has been highlighted, must not be limited to a hopeful visual analysis, but, albeit with less rigorous procedures of the traditional static test, will have to wait, with suitable tools, any structural critical issues that arose even after the construction and degradation of the materials intercomed over time, involving the technician in an assessment that is anything but superficial, but indispensable to control and safeguard the state of health Italian building.
