[TowerTalk] Mounting Yagi on the side of the Trylon tower.

[JVarney]

If your tower has legs made out of angle iron instead
of tubes or pipe, you may want to have a
structural engineering analysis done.

Angle iron strength varies greatly depending on the
direction of applied force, it has a strong axis and
a weak axis. Injecting side loads while the angle legs
are already carrying tension or compression from
loads higher up could induce leg buckling if limits are
exceeded.

73 Jim K6OK, Calif PE