04 Unreal for Construction Build the Elevator Area

Session 4 Summary: Modeling the Lift in Unreal Engine 5.6

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🔄 Project Setup

• Continued from previous session using apartment_set3.zip.

• Opened the apartment_set3_ceilings level and saved as apartment_04_lift_and_stairs.

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🧱 Lift Shaft Modeling (Stilt Floor)

• Created outer lift shaft: 1.3m × 1.3m × 2.4m (for ground floor).

• Created inner hollow space: 1.2m × 1.2m × 2.3m.

• Used Boolean (A − B) to create lift walls with thickness.

• Named mesh: lift_area.

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🚪 Lift Door Opening

• Created door cutout: 90cm (W) × 210cm (H).

• Aligned and used Boolean difference to cut out door space.

• Rotated and aligned lift to proper entry side of the apartment.

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🧱 Lift Shaft Base Cut in Site Mesh

• Created small box (128cm × 128cm) to cut hole in sm_site_area using Boolean difference.

• Updated site mesh with new boolean cutout for lift foundation alignment.

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⬆️ Stacking Lift Shafts Across Floors

• Used XForm Pattern tool to duplicate lift shaft up to all floors (Z-axis).

• Adjusted heights for floor variations:

  • Ground floor: 2.4m

  • All other floors: 3m

• Renamed as:

  • lift_area_1 (2.4m)

  • lift_area_2, lift_area_3 (3m mid)

  • lift_area_4 (3m top)

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🕳️ Lift Movement Path (Vertical Shaft Cuts)

• Created smaller box (110cm × 110cm) to simulate lift's vertical path.

• Used Boolean (A − B) to cut top and bottom holes in each lift mesh for continuity.

• Ensured complete lift shaft openness through all floors.

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🧾 Static Mesh Conversion & Naming

• Converted all lift areas to static meshes:

  • sm_lift_area_2.4m

  • sm_lift_area_3m

  • sm_lift_area_3m_top

• Removed redundant intermediate mesh (sm_lift_area_3).

• Optimized by sharing the same mesh for mid-floors (2 & 3).

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🎨 UV Mapping & Material Application

• Applied UV Unwrap (Polygroup-based) on all static meshes.

• Applied consistent material: ML_Pillar_Concrete for visual realism.

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✅ End Result

• Fully functional and optimized lift shaft with:

  • Internal walls

  • Openings per floor

  • Door cuts and base cut in floor mesh

• Ready for staircase modeling in next session.