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NATIONAL CERTIFICATE IN CONSTRUCTION UNIT 9: SURVEYING PROCESSES ASSIGNMENT THREE. TASK ONE (P7). Setting out any construction work is essentially the reverse of surveying. In the surveying process, angles and distances are measured; co-ordinates are calculated from the data and a plan is drawn of the results. Before setting out any construction works, the development plan is studied carefully and coordinates from selected points on the works are obtained by some means. They may be scaled from a plan, read from CAD drawing or may be computed from design sizes. Bearings and distances to these from known survey stations are calculated and those data used to set out the proposed works. To set out the proposed building, a step-by-step instruction of what was done is written as follows; 3-4-5 Method of setting out a building. * To set out the building the first thing to do is to look at the drawings to establish what the intended...

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