Wang & EF Tan Associates

Consulting & Registered Surveyors



Measured Drawing Survey is that branch of survey that is concern with the detail measurement of existing buildings. This is necessary for conservation of old or historical building and for alteration and addition work of existing buildings.

Surveyor scan the existing building using 3D laser scanner. The images scan are in 3D point clouds. These can be used to generate solid 3D model. The 3D point clouds can be use to produce line vector drawings of detail architectural floor plans showing rooms, wall, windows etc. In addition, detail elevation and section are produced together with roof plan.


Details of line vector drawing of facade are also generated from the scanned data. This is necessary for conservation projects where old façade may need to be reinstated.

Please Contact us if you require further information.