topic Purlin connection problem in Revit Structure Forum

Purlin connection problem

cbakerQD9Q2 — Tue, 07 Nov 2017 10:18:55 GMT

I'm using the structural connections feature in Revit 2018 for the first time. I've modelled lots of connections but can't get the 'single purlin custom cleat connection' to work. I keep getting an error saying "Unknown shape of connected element".

Revit can't recognise the purlin shape. It's a metsec purlin ,loaded of the Revit 2018 library. I've also tried downloading the purlin directly from Metsec but have had the same problem. Please help.

Chris

Re: Purlin connection problem

p_sankey — Tue, 14 Nov 2017 05:28:52 GMT

I've got the exact same problem, if you find a solution let know please!

Re: Purlin connection problem

mihai.sandu — Fri, 17 Nov 2017 12:19:08 GMT

Hi guys,

In Steel Connections 2018, users can place steel connections on custom profiles. This enhancement uses a shape recognition tool.

The following shapes are not recognized by the tool:

- Z cold formed profiles

- Z with lips cold formed profiles

- L cold formed profiles

- L with lips cold formed profiles

I tested on the Light Gauge Purlin Metsec (Z and C) profiles, from Revit 2018 library. The Z profile is not recognized and steel connections return an "Unknown shape of connected element" warning message.

The C Purlin profiles can be used successfully.

Regards,

Re: Purlin connection problem

Anonymous — Wed, 28 Mar 2018 17:44:54 GMT

How are you.

What connection did you choose for the c channel. I am trying the channel on a I beam rafter and it is not connecting. I have also used the top of the beam as the reference plane.

Re: Purlin connection problem

mihai.sandu — Thu, 29 Mar 2018 08:17:15 GMT

Hi @Anonymous,

The connections that you see in the picture that I uploaded are:

Single Purlin Tee, Single Purlin Folded Plate, Single Purlin Angle and Single Purlin Plate.

If you find a situation where these connections are not created, please send me a small rvt file with the beams that are causing the issue.

Regards,

Re: Purlin connection problem

Anonymous — Mon, 09 Apr 2018 01:06:24 GMT

Hey, the light gauge sections are not working. I tried the channel shapes and they worked fine. Are you getting the C Section light gauge sections to work. I am using CISC (Canadian) Steel sections.

Re: Purlin connection problem

Anonymous — Mon, 09 Apr 2018 01:08:43 GMT

have you ever tried creating your own user defined connections. I feel this may be the way to go.