Re-modelling the iconic ARUM presented at the 2012 Venice Biennale by Zaha Hadid Architects


0.1 

0.2 In the Applications menu, go to New > Family, select "Curtain Panel Pattern Based" and click Ok. Select the blue grid in the background, and click on the Type Selector and change the grid type to "Rhomboid". 

0.3 Select the blue grid again, in the properties menu, change the Horizontal Spacing to 1500 and   the Vertical Spacing to 3000. (See below image)


0.4 Under the modify tab click on "Set" (see below red arrow) and pick the xy-plane of the   Adaptive Placement Point no. 1 as in the below sketch.


0.5 Place a point on top of point no. 1 and drag it slightly up by pulling its z-axis icon (See below image). Repeat this step again over point no. 3.


0.6 Select the two new points together. (For multiple selections, click on the new points one after

0.7 In the Properties Menu, click the small button to the right of "Offset" (See below red arrow). The "Associate Family Parameter" will open. Click on "Add Parameter", make a new Type


0.8 Multiple-select the points above 1 and 3 then click "Spline Through Points" to make a line between the two points (See below red arrow). Select the new line and check "Is Reference Line" in the Properties menu (See below image).


0.9 Place a point on the reference line as shown below. Select the point then go to the properties menu and change the "Normalized Curve Parameter" to 0.2 (See below image).



10.0 Place a second point on the opposite side of the line. For this point, change the Normalized Curve Parameter to 0.8 and click the control flipper which will convert 0.8 to 0.2 thus

11.0 Multiple-select the two Normalized points, in the Properties Menu, click the small button to the right of "Normalized Curve Parameter" (See below red arrow). The "Associate Family Parameter" will open. Click on "Add Parameter", make a new Type Parameter, call it "WIDTH" and click ok to close the windows.


12.0 Connect the Normalized points with reference lines to the Adaptive points no. 2 and 4 as demonstrated in the below image. Use the Spline Through Points method from step 0.8.


13.0 Place a new point on the reference line connecting Adaptive points no. 2 and 1. Keep the point close to no. 2. Click the Control flipper then change the Normalized Curve
Repeat this step until you have 4 no. points as indicated below.


14.0 Place two new points, one on either side of Adaptive point no. 3 both sharing a Normalised Curve Parameter of 0.2 (See below image).


Note:    If a Normalized Curve Parameter of a certain value drives a point in an opposing direction to the desired then use the Control Flipper.

15.0 Repeat the above step, creating two new points but with a NCP of 0.21 (See below image).


16.0 Multiple-select Adaptive points 2,3 and 4 in addition to the reference lines and the points in between, then "Isolate Element" (See below image).


17.0 Once isolated use Spline Through Points in order to sketch an Spline as shown below. Just make sure to skip adaptive point no. 3 when sketching the spline and do not forget to checkmark "Is Reference line" in the Properties Menu.


18.0 Reset Temporary Hide/Isolate and redo step no. 0.17 on the opposite side constituting Adaptive points 1,2 and 4 so that your sketch is similar to the below image.


19.0 Now add new points to the diagonal lines connecting the Adaptive points no. 2 and 4 making   sure that the Normalized Curve Parameter values conform to the below sketch.


20.0 Isolate the diagonal lines with the new points and draw a Spline Through Points and skip the central anchor point highlighted below in red.


Note:    Do not forget to select the spline and check-mark "Is Reference Line" in the Properties Menu.


21.0 By now, you should have four splines as highlighted below in blue.


22.0 Following the below image, select lines no. 1 and 2; click the Create Form button, and select   the surface option from the bottom of your screen.


23.0 Repeat the previous step so that the completed panel looks as below.


24.0 Lift the Adaptive points numbered 2 and 4 upwards to flex the panel (See below image).


25.0 In the Applications menu, go to New > Conceptual Mass, select "Mass.rft" and click Ok.
In the Project Browser, under Elevations, double click "South". This will take you to the South Elevation view where we will sketch the lines (Approx. 6 meters high) denoted in the below image in preparation for a revolve surface. 


26.0 Multiple-select both lines, click the "Create Form Button" and choose the revolve surface that will appear at the bottom of the screen.


27.0 Select the created form, in the ribbon click on the "Divide Surface" button. Click the Type selector in the Properties menu and choose "Rhomboid". This will give you an indication as to how the divisions will appear (See below image).


28.0 Open the panel family, Save as "ARUM_PANEL" and load it into the above mass.
29.0 In the mass family, multiple-select both sides of the divided Rhomboid surface, in the Type Selector choose the ARUM_PANEL (See below image).

If you would like to know more about this technique, please contact us at parabimblog@gmail.com