AREA LOCAL AXES
AREA LOCAL AXES
(OP)
WHAT MEANS +CR,+CA,+CZ..... IN THE PLANE COORDINATE DIRECTION OF AREA ADVANCED AXES OPTIONS?
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RE: AREA LOCAL AXES
Cylindrical coordinate directions are indicated using the values CR, CA, andCZ. Spherical coordinate directions are indicated using the values SB, SA, and SR. The sign is required. See Figure 2 (page 19).
The cylindrical and spherical coordinate directions are not constant but vary with angular position. The coordinate directions do not change with the lineal coordinates. For exam ple, +SR defines a vector directed from the origin to point P.
Note that the coordinates Z and CZ are identical, as are the corresponding coordinate directions. Similarly, thecoordinates CA and SA and their corresponding coordinate directions are identical.
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from SAP2000 Analysis reference manual :)
RE: AREA LOCAL AXES