Site Setting Out / Field Setting
Out
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The method of setting out is the reverse of
surveying process. The process involves the positions and levels of building
lines and road alignments shown on the construction plans to be established
on the ground by various techniques and instruments.
Methods
of Setting Out
- Setting out
buildings by coordinates
- Setting out
with theodolite and level
- Checking
verticality
- Setting out
and alignment in steel framed buildings
- Alignment and
verticality in form work
- Control and
calculation for route surveying
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1. Setting Out Building by
Coordinates
A building can be set out by taking
referencing from an already established baseline. An irregular building or a
building having a complex geometry can be also be located using the same
method. For each corner of the building, a grid line can be established from
the baseline.
3. Checking Verticality:
To check verticality of points in a
building, the following surveying instruments can be used:
- Plumb Bob (For
buildings less than 20m in height)
- Optical
Plummet (A transparent plastic sheet is used as a target for checking
verticality of tall buildings)
- Theodolite
Setting
out works also include
Computations and setting out Methods for:
- Simple Circular Curves
- Compound Curves
- Reverse curves
- Transition
curves
- Vertical
curves
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