Part 1 - The rig for one structural column
Part 2 - Placing roof panels onto the rig
Part 3 - Creating the structural elements
Part 4 - Struts
Now it is time to really challenge the nesting capabilities of 'Repeaters' in Revit by placing struts on the structure. |
| Gare do Oriente structural element with struts added |
Here is a YouTube link to see it as a tutorial
YouTube:
Step by Step Checklist
In case you prefer reading it step by step:- Open the 'one-eighth' adaptive component created in the previous blog post
- Select the structural elements and temporarily hide them, to leave the rig visible
- Place two hosted points each on the arc and two of the reference lines
- Link the points with reference lines - in the case of the arc, snap to the intersection point along the middle of the arc (NB. make sure 3D snapping is on)
- The purpose of placing new shorter reference lines over the top of the existing ones is to create a rig for the struts to snap to the ends of those shorter lines while still being offset from the adaptive points
- Select the 3 points near the start of each line/arc - remembering the direction you placed the lines/arc
- Associate the Normalised Curve Parameter to a parameter called 'Segment proportion'
- Select the other 3 points near the end of each line/arc
- Change their Measure From properties to 'End'
- Associate their Normalised Curve Parameter to 'Segment proportion'
- Select the reference arc, click on the 'Divide Path' icon
- Repeat this for each of the two reference lines
- Select the 3 new Divided Paths
- Associate their number of divisions with a new parameter 'Number of Struts'
- Add a formula to the Segment proportion parameter:
- Segment proportion = 1 / (Number Struts + 1)
- This will make the distance each hosted point is from the adaptive points to be equal to the segments on the divided path
- Flex the Number of Struts parameter to make sure the divisions change and the end points move
Create the Struts
- Open the previously created 2 point adaptive tube family
- Save it as a 3 point strut family
- Add another point in free space
- Make it adaptive (point 3)
- Place a reference line between points 2 and 3
- Place 2 hosted points on the line
- Make their Show Reference properties to be Always visible
- Change their Measurement Type properties to 'Segment Length'
- Change the Measure From property of the second point to 'End'
- Associate their Segment Lengths to the 'Offset from End' parameter
- Set the work plane to be the reference plane of the first point
- Place a reference circle on the point
- Give it a radius dimension and associate it to the Radius parameter
- Repeat for the second point - add a reference circle
- Select both circles and the host reference line
- Create Form - it should create a second tube
- Flex the parameters and the adaptive point locations
- Load the V-shaped strut into the other adaptive family
Place the Struts
- Place a component, snapping to the divided path nodes on each path - it is important to select the same node number on each one
- It is better to avoid the end nodes so that you don't accidentally snap to a host point - choose nodes one in from the end
- Select the strut
- Click on the Repeater icon
- If the divided path host references were all created in the same direction, it should create a regular pattern of struts
- Each strut will have different length arms and angle
- NB. if you didn't get a regular pattern, and the struts cross over each other, refer to this link
- Flex the number of struts parameter and the adaptive point locations
- Load the family into the rig column structure created previously Part 3 - Creating the structural elements
- It should overwrite the family already placed on the rig (without struts), and display all the struts
- Try flexing the dimensions and the number of struts
The last stage is to add a base and place the columns on the station platforms . . . .TBA
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