Define Strands

Ignore the strand locations defined in the Girder Library and define the strand locations for this girder.

Item	Description
Strand Grid	Strand rows are defined in this grid. See below for details.
[Add]	Add a row to the strand grid
[Remove]	Remove the selected row from the strand grid
Permanent Strands	Select the permanent strand size and type from the drop down list. If the permanent strands are epoxy coated, check the "Grit impregnated epoxy coating" box. See Epoxy Coated Strands in the Technical Guide for more information.
Temporary Strands	Select the temporary strand size and type from the drop down list. Temporary strands are never epoxy coated.
Pjack	For each strand type, the maximum jacking force is shown. Check the box to enter a different jacking force.

Strand Grid

Strands are defined in horizontal rows. Multiple rows can be defined at the same elevation in the girder section. You must ensure the clear distance between strands is acceptable. The information in the strand row grid is:

Item	Description
Spacing, S1	Spacing between the two strands that straddle the vertical centerline of the girder. Enter a value of zero if there is a strand on the vertical centerline.
Spacing, S2	Spacing between strands in a row.
Type	Use the drop down list to select the strand type.
Left End, Y	Elevation of the strand row at the left end of the girder.
Left End, Face	Use the drop down list to select the face of the girder Y is measured from.
Left Harp Pt, Dist	Enter the distance from the left end of the girder to the first strand deviation point. Use the drop down list to select the measurement unit.
Left Harp Pt, X	Enter the location of the left harp point from the left end of the girder. Use the drop down list to select the measurement unit.
Left Harp Pt, Y	Elevation of the strand row at the left harp point of the girder.
Left Harp Pt, Face	Use the drop down list to select the face of the girder Y is measured from.
Right Harp Pt, X	Enter the location of the right harp point from the left end of the girder. Use the drop down list to select the measurement unit.
Right Harp Pt, Dist	Enter the distance from the left end of the girder to the last strand deviation point. Use the drop down list to select the measurement unit.
Right Harp Pt, Y	Elevation of the strand row at the right harp point of the girder.
Right Harp Pt, Face	Use the drop down list to select the face of the girder Y is measured from.
Right End, Y	Elevation of the strand row at the right end of the girder.
Right End, Face	Use the drop down list to select the face of the girder Y is measured from.
Ext. Strands, Left	Check if the strands are extended at the left end of the girder.
Ext. Strands, Right	Check if the strands are extended at the right end of the girder.
Debond, Left	Check if the strands are debonded at the left end of the girder. Enter the debond length.
Debond, Right	Check if the strands are debonded at the right end of the girder. Enter the debond length.

A girder can have up to four harp points. The images below illustate the two typical harp point layouts.

(Typical two point harped strand. Left Harp Pt Dist = 0%, Right Harp Pt Dist = 100%)

(Typical three point harped strand. This strand arrangement could be used if the left end of the girder were a cantilever. Another strand deviation could be added at the right end of the girder by changing the Right Harp Pt Dist value)