Series R y ST. Manual de Usuario /
R and ST Series. User's Manual
56
Occasionally a larger vertical splay may be
looked for, particularly for the bottom box of a
column. If this is the case, we can increase the
vertical splay angle by pulling from the bottom
box as seen on the illustration. In this case we
have joined the two lower pick-up points of the
bottom box with a nylon strap for a single pull-up
point.
The illustration shows flying of an arc of boxes,
using the lower flying points of the bottom box
as our pull-up point to obtain the arc. The pull-up
point needs to be behind the column's centre of
gravity
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