PSG iTech Auditorium
Client PSG iTech, Coimbatore Architect Vista Architects, Coimbatore Facade Contractor Murugan Arul Metals, Coimbatore Facade System Facade Consultant Technal Middle East Enclosure Facade Solutions, Thane
Architect intended building (Rendered image) ❖ Dome shape structure (Half ellipsoid) ❖ Triangular glass facade
3D steel Structure model ❖ Vertical (green color) members:- Rafters ❖ Bottom horizontal ( cyan color) members:- Facade purlins ❖ Bottom (Black color) members:- Roof - Facade interface purlins (Kalzip Purlin*) * Roof – facade interface modules are mounted on these purlins. Roofing materials are from Kalzip
• Facade area = 1100 SqM • No of glass panels = 1876
Facade 3D model developed by Enclosure Facade Solutions
System Design
Purlin
Rafter
Glass line
Facade
section
Major Area - Fenestration Detail (Standard modules) Unitized panel frame assembly
Minor Area - Fenestration Detail (Standard modules) Unitized panel frame assembly
3D Design & Drafting
Rhinoceros 3D - ( 3D Modelling & Production )
Grasshopper 3D – ( Algorithm Design
Analysis )
and
Scripting example ( Visual Programming )
3D Design workflow
Rafter base plate level
Kalzip purlin* position
Rafter position & Curvature
❖ Used as reference model for 3D making
* Roof – facade interface modules are mounted on these purlins. Roofing materials are from Kalzip
Survey model
Basic Ellipse for facade reference
Centre of ellipse (0,0,600) as Reference coordinate point. Facade level is 600mm above from actual ground level.
Minor axis of ellipse
Major axis of ellipse
❖
❖
From the survey model, Basic ellipse is generated (used for facade wireframe reference).
This elliptical path is the base of Glass line (Ground Transoms’ center line follows this elliptical path)
(Black color) divisions are for Standard modules
(Magenta color) divisons are for roof interfacing modules
❖ Wireframe generation is based on the basic ellipse and rafter curvatures.
❖ The wireframe represents the glass outer surface.
❖ Facade wireframe is created for optimum panel size and to achieve the equilateral triangle aspect. ( generated by Grasshopper )
❖ Wireframe gets trimmed at kalzip purlin region to achieve smooth curve for Facade - Roof interfacing.
Wireframe
model
Facade purlin loaction
(Purple color) Facade purlin
❖ Based on the system design facade purlins are extracted from the wireframe.
❖ These purlins are bent round tubes which are fixed on rafters.
❖ Standard modules are mounted on these purlins.
❖ A special type of bracket is used for fixing the modules in purlins.
Mullion – Transom (Unitized frame) Production model
Door opening
Door opening
Door opening
Unitized frame Mullion - Transom
Door opening
❖ Production model includes standard modules, Door modules, Roof interface modules.
❖ IGES files of mullions are exported for the production process and the cutting length of mullions are generated as excel sheet through grasshopper scripts.
❖ 3D details of transom are converted to 2D using Rhino and exported to Autocad for drafting purpose.
Fabrication and Installation
Technal Profiles
Fabrication unit
Mock-up stage
Facade purlin
Unitized frame
Unitized frame
Roof interface module
DGU Glass
Roof
– Facade interface area Roof – Facade interface area
Thank You!
