This Window Tab shows the calculated Sag & Tension Results for the Selected Span. The specific Selected Span can be selected in the Spans Tab, or defaults to the single span and elevation difference entered on the first tab. This tab is meant to provide detailed results, focused on tensions and sags. Also highlighted are the upper and lower support tensions along with the horizontal tension.

 

 

Field Descriptions

 (Repeated for Initial, Final Creep and Final Load Categories)

LOS Sag

Line of Sight Sag. This is the distance between an imaginary line drawn between the attachment points on each end (which could be at different elevations); called Line of Sight and the sag of the wire/cable.

LOS Sag Point

The distance from the lower support structure to the point  of the greatest Line of Sight Sag

Vert Sag

This is the amount of vertical sag below the lowest of either attachment points. If lateral (wind) loads are present or if there is a difference in elevations of the attachment points, this value will be different than the Line of Sight Sag.  If the amount of elevation difference between the attachment points is too great, there will be no "real" point where the wire/cable sags below the two attachment points. In these cases, a value is provided that represents what the sag would be if the sag profile was projected to its maximum vertical sag point. This special situation is indicated if the Vertical Sag Point is a negative value.

Vert Sag Point

This is the point where the maximum amount of vertical sag occurs in the wire/cable. This value can be different than the Line of Sight Sag Point if lateral (wind) loads are present or if there is a difference in elevations of the attachment points. This point is always measured from the lowest attachment point.

Horizontal Tension

This is the amount of tension that would be measured at the Vertical Sag Point. This is the guy-able tension component of the wire/cables tension.

Lowpoint Tension

This is the amount of tension that would be measured at the lowest supporting structure/pole.

Highpoint Tension

This is the amount of tension that would be measured at the highest supporting structure/pole.

Max %UTS

This is the maximum tension (Highpoint tension) expressed as a percentage of the wire/cables Ultimate Tensile Strength.

Vert Load Lower

This is the vertical force that will exist on the lowest attachment support. It includes the weight of the wire/cable and any frozen precipitation present.

Vert Load Upper

This is the vertical force that will exist on the highest attachment support. It includes the weight of the wire/cable and any frozen precipitation present.

Lateral Load

This is the lateral, or 90 degrees horizontally, force that is being applied to this wire/cable; usually from wind. It represents the total load for the span; of which the standard practice is to apply one-half of this amount to the supporting structures for Structural Analysis purposes.