Revit Roof Tutorial - Turret Gable Dormer with Paul Aubin
Why It Matters
By simplifying complex roof modeling, slope arrows cut design time and improve accuracy, giving firms a competitive edge in BIM‑driven projects.
Key Takeaways
- •Slope arrows allow arbitrary roof slope direction beyond perpendicular edges.
- •No calculations needed; set start and end heights for precise slopes.
- •Multiple slope arrows can coexist on a single roof for complex geometry.
- •Use split tool and disable inner segment to avoid conflicting slope lines.
- •Adjust slope arrow scale via view settings; excessive size may require tweaking.
Summary
The video demonstrates how Revit’s slope‑arrow tool can be leveraged to model a turret‑style gable dormer, a technique showcased by Paul Aubin during a BIM Pure master‑class.
Aubin explains that unlike the standard “sloped edge” option, which forces a slope perpendicular to an edge, slope arrows let the pitch run in any direction. Users simply specify the start height and the target height, eliminating manual calculations. He walks through drawing split lines, disabling “delete inner segment,” and placing arrows that point toward each other to create the gable’s ridge.
A striking comment highlights the tool’s flexibility: “You can use 100 slope arrows in the same roof if you want.” He also notes that floors can only have one slope, whereas roofs support multiple arrows, allowing designers to add “eyebrow” dormers around the entire perimeter.
Mastering slope arrows streamlines complex roof geometry, reduces errors, and accelerates BIM delivery for architects and contractors, making Revit more adaptable to unconventional designs.
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