Real-time survey and results functional to choose the most appropriate SIS.MI.C.A.® solution for the next phase of intervention.
Diagnosis and rehabilitation phase of the existing structure without involving any disruption of the building's functionality.
Definitive solution through the natural use dof properly conformed steel masks, without having to resort to chemical interventions.
With the approval of the 2017 Stability Law, the so-called “Sismabonus” decree was introduced in Italy.
Sismabonus applies to existing buildings and identifies 8 seismic classes (A+, A, B, C, D, E, F).
Taxpayers who carry out interventions to adopt earthquake-resistant measures on existing buildings can deduct part of the expenses incurred from their income taxes. The deduction percentage and rules for eligibility differ depending on the year in which the expenditure is made.
The deduction is aimed at both taxpayers subject to personal income tax (Irpef) and those subject to corporate income tax (Ires). As of 2017, interventions can be carried out on all residential properties and those used for production activities.
With the entry into force of the current technical standards for construction issued through Ministerial Decree 17/01/2018, important new features have been introduced regarding the nodes of reinforced concrete structures in Section 7.4.4.2.
As known to engineers in the field, the possibility of designing reinforced concrete structures assuming their non-dissipative behavior has been introduced, this aspect can therefore be applied to all constituent elements of the structure avoiding the application of design criteria in capacity. The concept just expressed does not apply to nodes, which should be designed so that their failure occurs last in the hierarchy of elements anyway.
The reinforcements are laid bare and their cleaning and passivation is carried out. Note (in this specific case of a building constructed in the late 1970s) the total absence of stirrups in the node, the small diameter of the stirrups of the beams and the 90° hooks of the stirrups of the pillars.
Note the absence of stirrups in the nodes, the smallness of the iron cover and the hooks of the beam stirrups in the node.
After the first phase of locating the reinforcements and ascertaining the absence of suitable stirrups, the System is installed according to the following procedure.
For housing the anchor plugs
A hole is drilled to the required depth. Cleaning and removal of the drilling residue is carried out afterwards.
In the image opposite: Before drilling the concrete, the SIS.MI.C.A.® plate was used as a template to view the positioning and angle of the holes.
For bedding the SIS.MI.C.A.® plate
Before spreading the R4 structural mortar, wet the concrete surface with water.
The insert is positioned above the structural element to be reinforced and is provisionally fixed to the reinforcing iron at the corner. This facilitates the drilling phase. The element functions as a guide for the position of the holes to be drilled in the concrete.
The anchor rods, also dimensioned and calculated using Logica3 software, are inserted inside the holes drilled. Before inserting the C2 epoxy resin, care must be taken to adequately clean the holes.
Once the tie-rod fixing operations have been completed, the previously removed concrete cover is restored.
The reinstatement is carried out using the R4 structural mortar supplied with the SIS.MI.C.A.® kit and having characteristics specifically designed for specific applications.
The minimum thickness of structural mortar placed on top of the plate must be 15 mm.
Compared to other reinforcement methods, our systems allow you to achieve remarkable results in a much less invasive way, with reduced intervention times and without interfering with the daily use of the building on which you are intervening, improving the characteristics of reinforced concrete elements with just the addition of one of its two components: steel.
Moreover, the intervention does not require specialised labour!
Restoring the concrete cover makes the reinforcement intervention invisible afterwards without any aesthetic impact on the structure.
