The 2 use cases selected as pilots for BIM4Ren project in Spain are:
The building located in Serapio Mujika 18, is a multistorey residential tower-type building, built in 1967. It consists of 15 storeys with four dwellings per floor, a ground floor, with a dwelling and business premises and a semi-basement floor occupied by various business premises. The façade requires an urgent intervention due to the structural degradation of the cantilevered balconies and their weak thermal performance due to the lack of insulation.
The BIM methodology was implemented in different phases of the process through the use of BIM based tools and technologies, i.e. 3D scanner in Data acquisition, REVIT for Design and ZUTEC for the construction phase.
The building located in Gaztainondo n1-3-5; Irun is a residential multi-story building which was built approximately in 1975. It is an eight-floor building with four dwellings by floor and entrances. Moreover, the ground floors (basement and the low level) of the building are destinated to commercial premises. It also has a floor under the roof for the machinery of elevators and storage rooms.
The lack of insulation on the façades and the multiple thermal bridges has brought on humidity leading to condensation inside the dwellings. The lack of waterproofing on the balconies has caused filtration moistures and cracks due to the oxidation of the reinforcements. There have also been detachments of the finishing brick and the joinery is in poor conditions.
The renovation works have consisted of energy retrofit of façades with external thermal insulation (ETICs) and replacement of windows as well as other functional works such as upgrading of installation, restoration of damaged surfaces and waterproofing of balconies were performed.
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