BUILDINGSETTING OUTLOCATION : POST GUARDS

KOLEJ KEMAHIRAN TINGGI MARA PASIR MAS,

KELANTAN.

CONSTRUCTION SURVEY 2

INTRODUCTION- Setting out was define as the term used for the

operations necessary for correct positioning of proposed works on the ground and their dimensional control during the construction process.

- Setting-out of a position- Setting-out of an angle- Setting-out of a point position- Setting-out of a straight line- Setting-out of a circular arch

• - Rectangular coordinates xA, xB, yA, yB in reference to a part of setting-out network given by points 1 and 2 are known.

- The objective of setting out work is :• i)The building or structure must be in true dimensional, relative or precise in size, locations and heights.• ii) The setting out work must be done before other construction stages and extended work such as relocate will be costly.

- Advantage• A point whose coordinates are known can be set out from any

other point whose coordinates are known providing that the two points are intervisible.

• The method is particularly suitable for use with a theodolite and tape over short distances on level surfaces, or a Total Station over longer distances and uneven surfaces.

•  - Disadvantage• Refraction, earth curvature, and residual instrument errors limit

the accuracy of elevations obtained. • However, if as often happens, the setting out is limited to X

and Y, as on a new concrete slab, then levels are not taken anyway.

EQUIPMENT

Measuring tape

Tripod stand

Prism

Plum bob

Total station

Pole

Hammer

Compass

Picket

Compass stand

PROCEDURE- All equipments of levelling are prepared and safed to used.- Choose the proposed building to do rectangular setting out.- Set up the instrument at station 1 and determine main position line. - Set up the compass and prism to get the bearing.- Set up the total station by using the bearing that we get.- Record the bearing at station 1 until station 7.- The same procedure is used for setting-out of next point.

CONCLUSION- - For the new structure it is very important to do

the seting out.- - The accuracy must be taken into account.- - To maintain the accuracy of setting out pile

point, is depend to the accuracy of the corner of the buildings.

•THANK YOU