ABSTRACT
It is now assumed that all relevant Notices, Permissions and Licences have been given or obtained prior to commencement of work on-site by those responsible for doing so at the contractor's head office. In taking possession Df the site, the project/site manager has many tasks to perform, for example:
The setting out of the access position tor the excavator driver (if necessary), using either the contract drawings or site layout plan which was prepared at the pre-contract period.
The preparation of a site grid of, say, 15 to 20 metres square which can be used to locate the building position on the land. Pegs are positioned round the boundary of the site and a theodolite is used to determine where a proposed manhole, corner of the building and point on a road should be placed (see site layout plan, Fig. 10.4.1, which should be to scale). At intersections of the site grid close to the boundaries or other convenient positions, pegs should be inserted. It is over these pegs that a theodolite is set up and orientated, and by measuring along the theodolite line of sight (the length of which is predetermined), relative positions of the building works can be established.
The recording of site levels from a Temporary Bench Mark (TBM) which is secured by a series of flying levels, if necessary, from an Ordnance Bench Mark (OBM).
Establishing the boundaries of the site, the building line, and improvement line (to be checked by the local authority).
Setting out the positions for hutting, compounds, storage areas, standpipes, etc.
Fixing of danger signs for overhead lines and underground cables and service positions to minimise damage.
The actual setting out of the building, drainage and roads, using pegs, profiles, sight rails, batter rails, etc.