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As built survey

Design Drawings v. As-Built Drawings

In an attempt to clarify some common misconceptions we are going to outline the misleading information that exists when categorising design drawings as being the same as-built drawings.

Are design drawings comparable with as-built drawings?

The short answer is yes. However, in reality that answer comes with a very strict health warning. If they are to be relied upon, then the answer is no!

Design drawings are a set of plans that are used to illustrate an architect’s original design. In practice, during the construction phase it is not always possible to follow the design and changes may be necessary. Once this occurs the design drawings are no longer representative of the executed design.

As-built drawings is most usually a term given to a set of 2D floor plans that are used to depict the executed design – post completion. Doors, windows, particular height data and such things are usually depicted on as-built drawings.

Why go to the trouble and expense of compiling a set of as built drawings?

An accurate record of a building has a myriad of applications and is a necessity in many ways. As-built drawings are an invaluable tool that many professions can tap into and utilise to their advantage.

Example 1: The granting of a fire certificate from the local authority. The granting of this is incumbent on an up to date building plan. Lobbies are required to create a safe means of escape, in the event of a fire. If these are changed or excluded, it is essential that this is caught – it might be the difference between a safe building and one that can only be termed a hazard. Such information is vital to those deciding on whether or not it is compliant with Part B of the Building Regulations.

Example 2: Facilities Managers may rely upon and use as-built drawings within their computer aided facilities management (CAFM) software. Facilities Managers may be further empowered if it is a commercial property and they have their area measurement noted within the as-built drawing. They then find themselves in the situation where they can easily evaluate return on investment and spot emerging trends.

On foot of a World Bank mandate (2013), the new International Property Measurement Standards (IPMS) will be the de-facto reporting standard for office space, throughout the world from the 1st January 2016. This will enable a like for like comparison on “lettable space” irrespective of location. Presently as it stands area measurement may differ up to 24% depending on the reporting standard used to report on the area measured!

All of the above describes some of the services that Murphy Surveys are familiar with and provide to our clients. If you wish to discuss any property services needs that you may have, do not hesitate to contact us on 045 484040, and we would be delighted to discuss your requirements with you.

For further enquiries, please contact:

Sarah Sherlock
Property Services Department
Murphy Surveys
Tel: +353 45 484 040
ssherlock@murphysurveys.ie