3D Surveying and Data Collection of Residential Blocks in Tallinn

19 February 2024

In the pilot site of Tallinn, partners from Tallinna Tehnikaülikool are working to obtain detailed 3D surveying data of the residential block as part of the pilot project. To achieve this, a 3D laser scan of the apartment buildings in the Akadeemia tee block was conducted. Various measurement methods were tested, including static scanning from the ground and mobile scanning parallel to the building facade. To ensure precise data, measurements were also carried out using a drone for photogrammetric surveying. The results of both 3D laser scanning and photogrammetric measurements were highly accurate, with differences of only millimeters.

In addition to the apartment buildings, the surrounding land area spanning a couple of hectares was also surveyed. Combining the measurement results into one point cloud resulted in a dataset that has been used in other projects, such as LIFE IP BuildEST. The 3D mesh model can be viewed here.

The energy efficiency potential of apartment buildings and measures to achieve it

As part of the EBENTO project, the energy efficiency potential of the Akadeemia tee apartment buildings, constructed in the 1960s, was investigated. The goal was to gain a deeper understanding of the reconstruction measures necessary to meet the established energy targets. The assessment involved analyzing the monthly energy consumption of six buildings from 2020 to 2022.

The investigation revealed that achieving Class A energy efficiency in these buildings requires additional insulation of the exterior walls and roof, installation of triple-glazed windows, implementation of a heat recovery ventilation system, and the incorporation of solar panels.

Piloting quality assurance principles in a social housing project in Tallinn

To pilot the quality assurance framework developed within the EBENTO project, a meeting was held with Sirkel & Mall OÜ, an Estonian design company. Following the meeting, the objective was set to analyse the compliance of a procurement tender prepared by the Tallinn Property Department with the quality assurance and commissioning principles. The procurement tender pertains to the reconstruction project of a social housing facility located in Tallinn, encompassing both preliminary and main project stages.

In addition to assessing quality assurance, a solar energy feasibility analysis for the building was performed. For this purpose, 12 different scenarios were explored, varying the total area of solar panels and battery capacity. The results of the analysis assist in determining the most economically viable solution for the building.

Tallinn pilot area digital twin

A LOD2 digital twin has been developed for the EBENTO project pilot area, which is linked to both the existing data in the Estonian Building Register and the typology of artificial stone apartment buildings developed at TalTech. The latter facilitates the development of a renovation strategy for the area based on existing building types. The digital twin allows buildings to be filtered by their intended use, making it easy to assess the proportion of residential and non-residential buildings in the building stock. The digital twin can be viewed here.

3D laser scan of the apartment buildings in the Akadeemia tee block. 

Akadeemia tee apartment buildings. 

Example of renovation scenario.

Tallinn pilot area digital twin. 

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