Geometrical verification of as-built BIM models by deviation analysis

Management Summary

This document aims at describing the use case ‘Geometrical verification of As-Built BIM Models’, which is implemented as part of the BIM-SPEED EU Horizon 2020 project.

Use Case Definition

Aim and scope

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.

Project Group

  • , Sharon Verghese (Techniche Universitat Berlin)
  • Jan-Derrick Braun,
  • David Schammler,



The documents reflect the current best practice and do not claim to be complete. They should not to be understood in the sense of a generally valid recommendation or guideline from a legal point of view. The documents are intended to support appointing and appointed parties in the application of the BIM method. The documents must be adapted to the specific project requirements in each case. The examples listed do not claim to be complete. Its information is based on findings from practical experience and is accordingly to be understood as best practice and not universally applicable. Since we are in a phase in which definitions are only emerging, the publisher cannot guarantee the correctness of individual contents.

  • Document Type : Use Case
  • GUID : 4FE693A3-D393-47E5-8848-62695CACBFC3
  • Identifier : BIMSpeed_UC26_HTV
  • Life Cycle Stage : ISO 22263
  • Revision : -
  • Project Status : Approved
  • Maturity level : Proven
  • Use Case: Approved
  • Processes: Approved
  • ER: Approved
  • Published on: Feb 20, 2023
  • Last change: Feb 23, 2023
  • Publisher: BIM Speed
  • Author: Steinjan, Jessica Kathrin

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