also, thank you Aussie BIM Guru for sharing this scipt, it is amazing, it helps us so much.

Great tip, and yes I think that would make sense in that situation. I was a bit less experienced in Dynamo when I made this so my old videos sometimes take some awkward list management steps.

Thanks! Yes almost 10 years of using revit now, but i began with 0 experience like we all do :)

You're welcome!

Thanks for the kind words, and you are welcome!

You're welcome! Hope all is well on your side of the world.

Unfortunately beyond my experience at that point, but have a try and use dynamo forums as an active help resource where you get stuck.

You're welcome!

You're welcome Dinos!

You're welcome!

I've scheduled a quick video on the 31st of this month to cover this briefly :) A bit more dynamo, some python, a new navisworks series and a surprise in march!

Thanks Richard, a few videos lined up in the new year will deal with MEP or all round workflows. Not quite my field of expertise but many of my followers have helped give me some ideas

@@AussieBIMGuru super videos, I look forward to them all

Nice work! Now you're a master too ;)

I edited some nodes so that I have some options to select ducts per level.

They appear in order of where they appear in the codeblock. Count is maybe a reserved word since i made this video a few years ago now so could be that.

Hrm I'll grab a look...

Typically this means nothing that list matched what you were searching for. Its a fairly generic error but hopefully knowing what it means helps troubleshoot it.

My best guess is you may be using revit 2023+ and now have the IronPython2.7 package installed. Mepover depends on it now.

Unfortunately I've got an architectural background so most of that goes right over my head! Maybe try the Dynamo forums for advice.

Sure thing, it's on my github here: github.com/aussieBIMguru/Dynamo_Scripts/blob/master/ABG_201102_DynamoWallOpenings.dyn

@@AussieBIMGuru Thanks so much.

In the latest version it is called LinkElement.ByRayBounce.

Hard to say what the cause is. Reduce your data set down to a few objects and troubleshoot 1 or 2 at a time to see why they might not be raybouncing properly.

The best way to do this would be to build the support as a duct fitting. These typically move with the system.

The way I've set up this workflow the duct hangers only sit at one level I believe, to deal with offsets you'd need to adjust the workflow to check both the underside of duct from level and the offset up to slab overhead in two steps, then set both parameters this way.

In regards to your queries; 1. This is probably difficult to automate if pipes share racks, as eventually those runs would probably diverge apart. You could probably collect multiple systems and eliminate supports closer than a certain point apart using one of my nodes in Crumple (group by minimum separation). Pipes are also quite different to ducts in that you tend to run them in parallel, so required width and placement would be difficult to assess. 2. If you could get their location lines this would allow you to assess their propagation using the vector of the curve and its Z value. You could filter out all pipes with a Z value or 1 or thereabouts. 3. Exactly, you could obtain multiple parameters and add/subtract as needed.

@@AussieBIMGuru thanks for your quick response.. you’re highly appreciated

It sounds like an issue with levels and lacing. This script is built to do 1 level at a time. Go back step by step looking at the data in each node, eventually you should be able to find where the list structure isn't correct.

Similar to this workflow, but you could get the pipe centre elevation and diameter to place the support, then get the direction of the curve at that point (or normal + 90) for orientation

In this case i use line based as the family is best defined by its two points of support. Whilst it may sometimes be centred upon a duct run it isn't always necessarily. I go on to use dynamo to place these using reference curves also, which are much easier placed if line based.

For this particular case you may need to use another mesh ray at these points at the duct level down to find out the drop in addition to the mesh ray upward to find the structure. My workflow here assumes flat duct runs currently.

Similar workflow. As long as theyre in connected systems it should almost be the same.

@@AussieBIMGuru there s no system for cable trays, maybe we can filter them by a shared parameter

@@bender06160 yes in that case you would need something the runs have in common, or manual selection of connected trays to be supported.

You're right... I didn't quite notice it in the first test! I believe there is probably some finessing required in the clash detection node workflow, it looks like it set to the beam underside in a few cases vs slab. Hopefully the workflow enables others to explore and refine further, and thanks for paying such close attention! I'll cross check the methodology in january... it might be a lacing issue. No access to dynamo in my holidays unfortunately! I seem to recall the clashes were all being identified to the right point, so I think it will be in the difference calculations where I've missed a step.

@@AussieBIMGuru The model you used are the HAVOC model provided with Revit?, if so I can have a try. Anyways you have a great holiday and see you again in 2020!

@@TheLegendMythMan thanks, have a great one too! Yes I've used the advanced sample projects for mep and structure. I had to adjust the levels to match, and the models dont quite match in plan, but close enough to allow testing.

Make sure the previous lists have no null values, and that the parameter by that name exists in your family you are setting the value of the parameter to.

Follow the warnings back to where they first occur and try to find any 'nulls'. I have a video on penetrations in walls here; kzfaq.info/get/bejne/pZ1nn6-X3rfRY2Q.html Springnodes have nodes for floor openings. I'll probably make a video on this eventually.

If in the same model you could use a raybounce from the data shapes package instead - this has the option to use nonlinked elements instead

It would be a similar workflow to this, maybe have a try and see how you go :)

@@AussieBIMGuru I will try and let you know if any problem occurs.

The nodes you need are in packages at 1:40, all downloadable from the package manager within dynamo. Manage > search for a package

@@AussieBIMGuru thanks

Hi there Tony, I'm glad you're finding my channel and content helpful - and that the style of showing full workflow resonates with your needs. It might be worth viewing my 'learn dynamo' series as I focus more on nodes and less on workflow in these videos. A handy one is lesson 4; list management. Check out MEPover and Bimorph nodes for some helpful nodes related more closely to coordination and services. RE culture, if the company is not sold on BIM or CAD then dynamo will be a challenge. Consider if you are working with the right teams/firm if your passion is computation, and if it is, then start showcasing the potential benefits through business cases and live demos. Hope that helps!

I'd have a look at the 'RayBounce on Linked Model' node in the data shapes package, it has the ability to consider native and linked, or just linked in its fourth input.

Hi Fahad, the best places to begin are: Dynamo Primer: primer.dynamobim.org/ My learning series: kzfaq.info/sun/PLBKwx9iS-Luk38UWL7gU9LCP_gojOu1qi There are various other series to learn Dynamo available, but I find they focus too much on geometry and too little on Revit suitable workflows. I also have a webinar on how to best begin your learning journey: campus.hexabim.com/bim/Getting-Started-with-Visual-Coding-Dynamo-Grasshopper-and-beyond-with-Gavin-Crump/

I believe these are default parameters for ducts if you mean those, otherwise try out my hanger family on github.

I keep my scripts on github under the dynamo repo.

It's hard to say but my best guess is it could relate to imperial vs metric units, or the ray bounce wasn't successful and reached too far beyond the model. Cross check that the height number being provided is logical in Dynamo and if not look back through the data to see where it might be coming from.

Sure can, they're in a custom package I'm making. I keep a copy on my github; github.com/aussieBIMguru/Crumple

Run it in dynamo player.

Edit, managed to make the supports extend to the element above, however it doesnt extend in the sample project file, only files with a linked ifc model. the problem im facing now is that some hangers extend beyond the slab, some inside of it. any tips?

Hrm it sounds like an error with the raybounce node. I havent tested this workflow beyond revit 2020 so might be some changes in node behavior since i made this unfortunately. I'll try to revisit it on the channel eventually for revit 2023.

Work back through the workflow and find out why there is no match found. A -1 result means there wasnt a match in the list available to index.

Similar workflow, but some different nodes would be required. You'd also need a fab part hanger which is harder to make than a revit family I think. Have a look at MEPover package.

github.com/aussieBIMguru/Revit-Files/blob/master/Families/ABG_GEN_Unistrut-Hanger_R20.rfa

In this link this family is saved in later version. Can u please share me 2019 version.

@@ummarkhan561 unfortunately I made the family in 2020 so cannot downgrade it.

In this tutorial, you used Revit 2019 version Family. I may see those family creation videos was also in R19 version here: kzfaq.info/get/bejne/f794e9WfqeCxdnk.html. And I want to thank you very much for this video. I really appreciate it.

Yes I believe by the time I uploaded my files to github I had begun using Revit 2020 so had to upgrade my old sample files I had on record.

I actually have a tutorial showing how to make the family here: kzfaq.info/get/bejne/f794e9WfqeCxdnk.html Good opportunity to learn, should take about 25 minutes in all.

​@@AussieBIMGuruThanks for your help. I have tried, but there are still some mistakes. The details cannot be well controlled, but it is a great progress，I hope more electromechanical projects will be provided in the future. Thank you for sharing

@@tingyunmao8861 you're welcome! I'll have more mep workflows in the new year, typically using the sample models.

@@AussieBIMGuru That's great. Now the mechanical and electrical processing is mainly pipe fitting processing, which is particularly difficult. I saw the mepover node today, and I don't have a good idea

Make sure you have the MEPover package installed and browse through it - the node name might be different depending on the version you are using.

@@AussieBIMGuru please i cant find MEPover package could you help me please

@@ahmedallam9733 it is on the package manager in dynamo itself. If you cant access that it can be found here also; dynamopackages.com/#

This comes with dynamo and is under Revit > Elements in the library.

@@AussieBIMGuru thanks,can i ask again? in my dynamo in node ByRayBounce have a warning "Warning: LinkElement.ByRayBounce expects argument type(s) (Autodesk.DesignScript.Geometry.Point, Autodesk.DesignScript.Geometry.Vector, Revit.Elements.Views.View3D, Revit.Elements.Category, bool), but was called with (Autodesk.DesignScript.Geometry.Point[], Autodesk.DesignScript.Geometry.Vector, Revit.Elements.Views.FloorPlanView, null, bool). " and my ByRayBounce not the same with your node in the video,my bolean have some option after direction,origin and 3D view,i have 5 option which is direction,origin,3D View,category,find nearest.

@@yanuar9093 based on the warning it appears your view is a plan and a focal element hasnt been provided.

when I connect the point (curve point) to the origin (byraybounce), a warning appears like that

@@AussieBIMGuru can i know the version of Bimorphnodes in this video?

I recommend first going through dynamo primer then looking into taking a guided course if youre not ready to experiment. I offer one here if of interest which covers a lot of ground: courses.bimguru.education/courses/course-dynamo-4revit

@@AussieBIMGuru I will rent it out once I am done learning revit..thanks!!

And do you have any course for preparation of autodesk certification exam of revit in similar price range? I would like subscribe to it

@@vibhavarypatibandla4828 unfortunately not. I havent taken the exam for years now, so am not 100% sure what it consists of these days. I'd check if firms actually want you to have it or not, most firms in Australia where I work don't care about it that much.

@@AussieBIMGuru oh okay..I will surely rent out the dynamo course once I am done learning revit..thanks for the reply!

I should have a full course out in a month. It will be from beginner to intermediate and should be affordable as well. It will be structured and more organised than watching these types of tutorials so should hopefully help.

@@AussieBIMGuru can you help me I m beginner

Check out my 'learn dynamo' series playlist. kzfaq.info/get/bejne/qdGCqpaXvd-4o6c.html

My Dynamo course is now available :) courses.bimguru.education/courses/course-dynamo-4revit

:)