Sokkia CX-101, Руководство по обслуживанию, Страница: 121 / 322

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17. SETTING-OUT ARC

Specifying points and curve parameters
Parameters that can be entered may be restricted depending on the points spec-
ified in step 5/6. Parameters that can be entered are marked with a circle (
○ ).
Those that cannot are marked with a cross (
×
).

Precaution when performing setting-out arc
In the following cases parameters cannot be calculated:
when Radius<
When Arc<Chord
When Tan In
×
2<Chord
When the included angle between the back tangent and the azimuth angle
between the From Pt. and To Pt is 0°, or exceeds 180°.
Parameters
Set
coord
Radius Angle Arc Chord Tan In Bk
tan Directi
on
To pt
Center pt
× × × × × × ○
To pt
Intersect pt
× × × × × × ○
Center pt
Intersect pt
× × × × × × ○
To pt
○ ○ ○ × ○ ○ ○
Center pt
× ○ ○ ○ ○ × ○
Intersect pt
○ ○ × ○ × × ○
Chord
2
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