How to create addin rebar for beam

[duchoabn]

Dear all

Please guide me how to create one Addin same as Extension Reinforcement of Beam, in extension for revit.

See picture below for more detail

THANKS ALL PRO

[Lucavox]

You need to argument your question.
You could start here
http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=16777469

[alexandru.lacatusu]

Hello,

Starting with revit 2018, there is a new api service for defining custom rebars that leverage the regeneration mechanism. Check out the link for an introduction

http://thebuildingcoder.typepad.com/blog/2017/04/whats-new-in-the-revit-2018-api.html#3.35 

And here is a link to the documentation for this api feature

http://www.revitapidocs.com/2018/3e845cad-eca0-ccb3-785b-48a32a9f2677.htm

This feature lets you define rebar sets of any shape(2d, 3d) that react to changes in formwork based on your own custom rules.

One example of this kind of rebar is available in revit 2018.1

http://blogs.autodesk.com/bim-and-beam/2017/07/12/free-form-rebar-distribution-in-revit-2018-1/