Building Information Modelling – What Level of Detail Should I Commission?

Using Building Information Modelling through the life cycle of a building construction project is becoming increasingly popular with leading developers, architects, contractors and engineers.

At Michael Gallie & Partners, we advise our clients on the importance of specifying the correct level of detail when instructing a measured survey Building Information Model.

Why is it so important to understand the level of detail in a measured survey Building Information Model?

Although there are building modelling information standards used within the AEC industry the geospatial surveying community does not really have a professionally recognised measured survey Building Information Modelling specification to adhere to. Even the RICS measured surveys of Land, Buildings and Utilities specification touches only fleetingly on this process and does not specify level of detail. With no industry recognised measured survey Building Information Modelling standards or specification, this has resulted in a varying quality of deliverables across the measured building survey industry.

Any client commissioning a measured survey Building Information Model deliverable should always ask for examples of the level of detail being offered in the survey companies proposal and to compare that against all other tenderers level of detail to ensure you receive what you require. To avoid any ambiguity in regards to level of detail, at Michael Gallie & Partners, we provide the client with our bespoke Building Information Modelling specification. This includes all our proposals, which clearly defines the advised level of detail for the project.

What is the correct level of detail for your project?

There is no right or wrong answer to this question, but it should reflect what the Building Information Model is going to be used for, so it is fit for purpose. At Michael Gallie & Partners, we can advise on the level of detail required for your specific project but as a rule of thumb it is always worth comparing standard 2D legacy scale deliverables to understand Building Information Modelling level of details.

Please see comparison below;

  • Level of Detail 1 or 2 – 1:200 Legacy Scale Detail
  • Level of Detail 3 – 1:100 Legacy Scale Detail
  • Level of Detail 4 – 1:50 Legacy Scale Detail
  • Level of Detail 5 – 1:20 Legacy Scale Detail

If you need any advice on commissioning a measured survey Building Information Modelling, please contact Sam Lloyd at Michael Gallie & Partners who will be happy to assist you in this matter.

Michael Gallie & Partners are regulated by the RICS and can provide you with the added assurance of having industry leading £10 million Professional Indemnity insurance cover.

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