178
⑨
The screen pops up “Elevation
Adjust” again. Click [OK] to adjust.
Not to change any data, click“
”.
⑩
The display returns to standard
survey main menu.
13.5 BATTER BOARDS
When setting out points, particularly for building plots, it is usually necessary to
mark a point with an offset so that the point can be re-established after work has been
carried out in the work area. In this case batter board can be used: the intersection point
(of a batter board and the line that connects two points that have to be set out) can be
marked. Later, the intersection points are used by pulling a string line between these
points. In this way, the required points can be reconstructed.
●There are two ways to proceed:
First way is using two sides of the batterboard. The user is advised to use this
method in case high accuracy is required, control of the measurements is required or
one batterboard is used to mark more than one intersection point. Refer to Chapter
13.5.1.
Second way is using one side of the batterboard. The user is advised to use this
method in case a quick method is required. Refer to Chapter 13.5.2.
13.5.1 Method 1: Batter board using two sides
The two sides of batterboard should be measured now. Put the reflector above one side
of the batterboard, enter a number for this point (BB point 2) and press Enter.
Operating Procedure:
(A)
Two setout point (S1 and S2) are selected and one side of the batterboard is
measured (BB1).
(B)
The other side of the batterboard is measured (BB2)
。
The intersection point of the
batterboard and the line connecting S1 and S2 is calculated. Next, the distance (D1)
from BB1 to intersection point and the distance (D2) from BB2 to intersection
point are calculated.
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