The aim of the BIM-SPEED project is to:

• reduce the time of deep renovation projects
• develop affordable tools and integrate them into the BIM SPEED platform
• standardize procedures for implementing renovation solutions

The general objectives of deviation analysis is to ensure the following:

• Reliability of captured as built geometry in the 3D BIM model.
• Time saving – Identified use cases can be executed on a reliable as built 3D BIM model, opposed to inaccuracies in the implementation of other use cases on the 3D BIM model

One of the main objectives of the BIM-SPEED project is to reduce the time of deep renovation projects by 30%. Deviation analysis carried out for geometrical verification of 3D model based on laser scans of existing building allows time reduction and enhances reliability of the as-built 3D BIM model by:

• Carrying out design based on verified as-built model
• Spotting errors or changes which might have occurred during the construction phase prior to renovation

With regard to geometry, the existing planning documents and the point clouds to be created from the building are of particular importance for creating and checking the model for geometrical correctness. Beside that it is necessary to consider the geo-coordinates and the buildings alignment while creating a 3D model of the as-build state, it is the only way that model of different disciplines can be consolidated.