Creating Roof by Extrusion

Create in an elevation or section by defining a profile sketch

Activate South Elevation
Zoom in to the front entrance
Architecture tab > Build panel > Roof - Roof by Extrusion

Select Pick a plane

Select front face of the wall

Level: 2nd Floor

A green dotted reference plane is set at 2nd floor, and the drawing is grayed out

Draw panel > Spline

Sketch the roof profile not above 2nd Floor reference plane

Click Finish

Properties palettes - Extrusion End: 1850

Type Selector - Basic Roof: Generic 400mm, Edit Type - Duplicate

Name: Generic - 230mm

Edit the Structure Thickness to 230 mm

Change to 3D view

Modify Extruded Roof

Activate Site Plan

This view display the entire building in plan including all of the roofs

Hide the Grid Lines and Elevation Marks

Select the roof

Drag the control to the length of 3500

Opening panel > Vertical

Draw panel > Rectangle

Create a rectangle cutout of the roof

So the roof does not pass through the building

Click Finish

Change to 3D view