Describe stepwise procedure to prepare the layout of a small building using total station.

Describe stepwise procedure to prepare the layout of a small building using total station.
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Answer :

Layout of small building by using total station:

1. On the plan supplied by an architect, number the column serially from left to right and top to bottom starting from top left corner.

2. Work out coordinates of column centre with respect to one plot corner or well defined point, assuming line parallel to any one face of building as meridian.

3. Create an excel document with 4 independent columns one for column number and rest three for N, E & H coordinates. Upload this file to total station by using transfer software provided with instrument.

4. Set the total station at site at a point with respect which the coordinates of column centre are work out. Initiate the total station by proving with the coordinates of station and by orienting the telescope along the reference meridian.

5. Now, activate the setting out programme of the total station. Open the uploaded file & bring in the coordinates of any column to be set out.

6. Hold prism pole at tentative position of that column on ground, bisect it & get measured its coordinates.

7. In next reading machine will display the discrepancies in the coordinates of the point & point to be set out.

8. Direct the reflector man accordingly to occupy the new position, bisect him again & get measured its coordinates to know the discrepancy.

9. Repeat the process till you get no discrepancy in the coordinates of point occupied & point to be set out. In this way get marked centres of rest of the columns.

10. Check the accuracy of the process of setting out by comparing the diagonal distance between the extreme column centres to their calculated values.
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