D I G I TA L D E S I G N A P P L I C AT I O N Per formative Canopy Folio
Ya nj i e Z ha n 785675
2
B R I E F. The main task is to design a medium scale structure that serves as sun-shade for north-west facing backyard of a 2 storey family-unit with the facade of the first floor set back by 2.5 meters in order to accommodate a terrace.
The first criterion is the generation of its structural support system developed out of feedback you get from structural optimisation using tools such as Karamba/Kangaroo/Miliped or others.
The second criterion is the design of the canopy roof (or membrane) to achieve maximum level of sun shading with minimum material usage while maintaining views out of the windows of both floors of the wall. You will find physical models and software such as Diva or Ladybug/Honeybee useful allies in testing various options of your design for their shading-performance efficiency. Also ensure that the structure obstructs movement of people under the canopy as little as possible. The shade canopy should function in a way that it provides 100% shading to the building faรงade, the terrace, and the ground up to 3m in front of the facade between 2pm-5pm during summer solstice.
Sketches.
exploring base geometry/form.
3
S U R F A C E S T R A T E G Y. The surface strategy directly responds to the requirement of the canopy, where it shades the most of the sunlight and still preserves the view.
The strategy starts with template 5 meters in front of the ground facade. By pushing down the north-west corner to the 3 meters in front of the ground facade, the most northwest side is shades with the surface. Setting Up
Canopy Template
Shading Strategy Same strategy to the viewing, pushing down the south-east corner directs the residents to the north-east view. Finally, lift up the northeast to provide better viewing experience.
Viewing Strategy
Optimized View
4
Panel Form Finding
Sun Vectors
Panel Formation
Orientated Panels
Finding Norm Surface
Base Panel 4
1
2
3 Orientating towards Sun
Panel Integration
Panel Formation
5
PA N E L S .
The sub-divided panels from the surface is intented to rotate to face the sun, perpendicular to norm of the sun.
To do so, first is to find the plane facing the sun, where the point is located in the center area of sun path and connects points of the original panel central points.
6
Ladybug + HoneyBee
EPW data file
Imput 1: Shade Surface
Results
Sun Path during Summer Solstice 2-5pm
Imput 2: Tested Surface
Shading Effeciency: 86%
7
E N V I R O N M E N T A L A N A LY S I S .
To test the shading performance required in the brief, the scripts, Ladybug
and
HoneyBee,
introduced in this stage.
Visibility Rate Horizontal 60 degree Cone of Vision
Iterations
View Rose
are
8
Karamba Structrual Analysis
Panel Joints
9
S T R U C T U R A L A N A LY S I S .
To test the structure performance required in the brief, the scripts, Panels Plywood 7mm Panels
Strucutral Analysis
Diagrid
Displacement: 1500mm
CHS 60mm Diameter x 5mm Thickness
Columns CHS 200mm Diameter
Initial Panel Connections
Initial Structural System
Karamba, are introduced in this stage.
10
O P T I M I Z AT I O N 1 : S t r u c t u r e . Solution 2: Change structural material to timber and increase the depth of the diagrid frame. The junction will be similiar to waffle structure strategy.
Feedback: Sketch structural design is tested and result was 1600mm displacement, which is failed. The middle frame starts to fall off as there was no supports in the middle. Solutions 1: Change base form to convex curve surface.
Panels Plywood 7mm Panels
Displacement: 250mm
Diagrid
Base Form Iterations
Plywood 50x50xH300mm
Displacement: 297.5mm
Columns CHS 200mm Diameter
Displacement: 257.1mm
Panel Surface Testing
Results: The change of base form has dropped the displacement length by approx. 85%. However, this convex surface makes orientation of the panels random and uncontrollable, which directly leads to bad results on environmental analysis.
11
O P T I M I Z AT I O N 2 : P l a n a r i t y o f P a n e l s Feedback: In order to align panels to base structural grid for panels’ connections, the oriented panels at the beginning have to be planar. Also, plywood in real life is flat material. For fabrication and construction purpose, the panels have to be flat. Solutions: To do so, Kangaroo’s Planarize tool can be introduced to flatten the panels.
O P T I M I Z AT I O N .
After scripts are initiated, sketch design
is
environmental
examined and
through structural
analysis. The stage of optimization guides the design to optimized states where the project will be experimented until reaching the satisfaction of all requirements.
First Planarization
Displacement: 154.2mm
Second Planarization
Results: The change of material and depth has dropped the displacement length by approx. 90%. Waffle strucutral joint strategy will be developed for fabrication.
12
FA B R I C AT I O N .
It will be using laser cut to fabricate the structural elements and panels. The bits are oriented and layed carefully with labels. At this stage, digital tool assists designers to organize customized elements to get fabricated.
13
CONSTRUCTION.
The method of model making will be similar to the real construction where basic structure will be up with help of scaffolding or external supports and orientation of the panels will be determined by their norms to the sun.
Step 1
Step 2
Step 4
Step 3
Step 5
14
Edge Beam Set up
Diagrid Beam
Diagrid Beam
Sun Vector Simulation
Panel Orientation
Panel Joint Detail
15
16
Front Elevation
East El
17
evation
West Elevation 0
3
9m
18
Interior Render
19
Exterior Render
D I G I TA L D E S I G N A P P L I C AT I O N Per formative Canopy Folio Ya nj i e Z ha n