Purlins are the carriers that carry rafters on the roofs and are placed perpendicular to the rafters of at least 10x10 cm dimensions. Purlin roof detail is created with the purlin command.
Location of Purlin Command
In the Architectural Program
You can access it under the ribbon menu Home tab Roof title.
In Structural Program
You can access it under the ribbon menu Objects tab Roof title.
Purlin Settings Dialog
The width of the purlin section is entered.
The height of the purlin section is entered.
The distance of the purlin from the roof eaves is entered.
Purlin's elevation is entered. The elevation of the purlin is automatically adjusted to be tangent under the rafters according to the entered distance. The value entered here is used to raise the purlin up or down from this automatically calculated elevation. If the elevation is zero, the purlin will touch the lower surface of the rafters. If a positive value is entered, the purlin will move up, if a negative value is entered, the purlin will move down.
Apply to all edges
If apply to all edges option is marked, purlins will be created on all roof surfaces according to the entered parameters.
To draw a purlin:
Click the Purlin icon in the ribbon menu .
Click with the left mouse button on the roof eaves you want to create a purlin.
The purlin dialog will be displayed. Make the necessary settings here and press the OK button.
The purlin drawing will be completed.
Create the purlins for all roof surfaces with the above process order..
Selecting roof eaves while on purlin command
Purlin previews occur
Making settings in the purlin settings dialog - entering the purlin distance 50
Preview changes according to distance entered
The formation of purlins