Surveyors measure the real world: the site, existing buildings and what has been built. Their control points, point clouds and set-out data are what tie every model to the ground, so knowing what they deliver, and how accurate it is, saves costly surprises.
Surveyors measure the real world. Before design they map the site and existing buildings; during construction they set out where things go and check what was built. Their data is what ties every model to the ground.
You need a scan of an existing plant room before replacing the chillers. List what your brief to the surveyor should specify.
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