A Two Track Cantilever (TTC) is a type of Structure. Due to a TTC being associated with two tracks there are some differences from the steps in How to add a Structure.
Step 1: Place a marker
Place a circle to act as a marker for the position you would like to place the structure.
Step 2: left click the 'Structures: Place' button
You may need to left click & hold on the 'Structures' button to reveal additional buttons.
Step 3: Left click the marker
This should be the marker you placed in Step 1.
Step 4: Right click
This will allow placement of a Single Mast Structure. If you are looking to place a Portal Structure please see: How to create a Portal.
Step 5: Left click the Left Rail
This should be the leftmost rail of the tracks you wish the structure to be associated with when looking in the direction of increasing chainage.
Step 6: Left click the Right Rail
This should be the rightmost rail of the tracks you wish the structure to be associated with when looking in the direction of increasing chainage.
Step 7: Enter 'Structure Details'
The following 'Create Structure' form will appear. Complete the 'Structure Details' section with a name and the chainage that the structure should be located at.
Name: Identifier for the structure
Chainage: Chainage value that the structure should be placed at in kilometres
Step 8: Select Mast Style
From the drop-down menu, select the Mast Style you would like to allocate.
Step 9: Select Gantry Style and Foundation Style
From the drop-down menu, select the Gantry Style and Foundation Style you would like to allocate.
Step 10: Configure Mast
Adjust values for the Mast Length, Mast Bearing, RECOS/REFOS, Gap and ToF.
Length: Length of the Mast in metres
Bearing: Rotation of the Mast in degrees measured from North (0°)
RECOS: Distance from the centre of steel to the running edge of the closest rail in metres
REFOS: Distance from the face of steel to the running edge of the closest rail in metres
Gap: Spacing between the Top of Foundation and base of the Mast in metres
ToF: Top of Foundation height above sea level in metres (By default this value will be set to the HRL)
Step 11: Configure Foundation
Adjust values for the Foundation Length and Foundation Bearing.
Length: Length of the Foundation in metres
Bearing: Rotation of the Foundation in degrees measured from North (0°)
Step 12: Configure Gantry
Adjust values for the Gantry Height and Gantry Length.
Height: Distance between the HRL and bottom of the Gantry in metres
Length: Length of the Gantry in metres
Step 13: Left click 'Confirm'
This will close the 'Create Structure' form.
Step 14: Confirm the structure has been placed correctly
You can now check that Lineardraft has placed a structure, which will be visible in both the 3D and Plan views.
