Hello all, I am posting here because I need some help. The firm I work at, we create a lot of as-built drawings/models. and we have decided to go from wall/ceiling/floor/etc. hosted families to face-based. We are now faced with the task of updating our models. I thought I could use dynamo to quickly replace all of the floor-hosted families with the face-based ones, but it is proving difficult. I am able to pull all of the existing elements (floor-based) by their points (X,Y,Z) but when I go to place the new (face-based) families by points, it places them correctly by their X,Y but their Z axis always comes in at 0. I have tried FamilyInstance.ByPoint and FamiliyInstance.ByCoordinates to no avail, and also Springs.HostedInstance.ByPoints. I’m guessing it is something to do with the family wanting to inserted at a vertical face, and when the floor isn’t vertical, it just disregards the Z-value and it comes in at (X,Y,0). Has anyone had any issues with this or any solutions? Thank you for reading this. Any help / ideas would be appreciated. Thank you! [workspace] [Existing%20Family%20Locations] [New%20Family%20Locations]

I think this graph will also solve your issue. Composed in 1.34 1.34_Replace Floor Based Families with Face-Based Families.dyn (19.6 KB)

Can you manually place the family horizontally? If so check out the springs.hostedinstancebypoints node in the springs package.

Thanks for the suggestion JacobSmall. I will try placing it horizontally; I think it defaults to be placed on a vertical face. I tried the springs.hostedinstancebypoints node but it didn’t work. I am thinking maybe I have to go host by host or level by level.

Host by face - harder to get a face than an element in the api.

I figured it out; will post workflow soon. OOTB Dynamo Nodes. By filtering the old family’s host, I was able to go host by host and replace them by using FamilyInstance.ByFace using a location and a reference direction perpendicular to the face. Because it defaults to being placed on a vertical face, make sure the reference direction is parallel to the face you would like to place. It is essentially placing it parallel (the families vertical) to the floor.

Issue with replacing floor-based families with face-based families

Revit

spenny18 February 1, 2019, 8:20pm 6

Workspace:

HostedInstance.ByPoint hosts at Z 0.00

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Issue with replacing floor-based families with face-based families

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