🔢Data Model - Parameters
In this video, we explore one of the most complex and important areas of the BIM data model: parameters. We dive deep into family, family type, and family instance parameters, learn how they’re structured in Power BI, and how to identify naming issues, duplicates, and convert Revit units properly.
⏱️ Chapters
00:00 Intro – Parameter tables overview
00:10 Missing table: Family Parameters
00:19 Understanding the data model links
00:28 Table view vs. model view
00:47 Element key as a troubleshooting tool
01:26 How to trace parameters using the element key
02:18 Parameter list for one element
03:20 Using category name to decode unknown elements
04:13 Descriptor vs Parameter – What’s the difference?
05:02 Count descriptors vs parameter keys
06:11 Same names ≠ Same parameters
07:06 Duplicate names and shared parameters
07:40 Why parameter naming audits matter
08:07 Summary: Descriptors = Names, Parameters = Values
08:30 Parameter group and shared GUID
09:03 Shared vs. non-shared parameters
09:22 Descriptor key and case sensitivity
09:52 Parameter data types and quirks
10:49 Ignore "storage type" – use friendly names
11:19 Parameter values (display and searchable)
12:03 Counting parameter values
12:30 Quantity in feet vs metric (conversion explained)
13:10 Transform Data: How unit conversion works
14:14 When to use metric, mm, or raw values
14:42 Parameter value IDs vs readable data
14:58 Parameter summary – work in progress
15:23 Applies across all parameter tables
15:36 Parameters: Big, messy, and essential
15:48 Wrap-up – Moving to next table
🧠 What You’ll Learn
✅ Difference between descriptors and parameter values
✅ Identifying and fixing duplicate parameters
✅ When and how to use unit conversions
✅ Power BI case sensitivity quirks in Revit parameters
✅ Navigating and troubleshooting parameter tables
📘 Full documentation: https://docs.vimaec.com
💬 Questions? Drop them in the comments
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