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Section 5
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next page.] The 'RANGLE' option rotates the
section through an angle equal to (180 - "alpha").
Both options will work the same way for equal
angles. For unequal angles, the right option must
be used based on the required orientation.
Figure 5.17a
Local X goes into the page, global Y-axis is Vertical
Beta = 0
"RA" Angle
Local Z
α
Local Y
Beta = RANGLEBeta = Angle
Local Y
180°−α
"RA" Angle
Local Z
90
°- α
Local Y
"RA" Angle
Local Z
Local Z
Local Y
Local Z
Local Y
αα
90°- α
180°−α
Local Y
Local Z
"ST" Angle "ST" Angle "ST" Angle
Beta = 0 Beta = Angle
Beta = RANGLE
Local X goes into the page, global Y-axis is Vertical