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TOPIC: Piping orthos

Piping orthos 2 years 8 months ago #9072

  • Anton
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The following question was asked recently on another forum, and I wanted to throw it out there to our group:

I would like some feedback on the amount of detail being put into ortho drawings.
We find that the construction managers and contractors nearly always request model shots and a Navisworks file.
To my thinking these types of deliverables are slowly replacing traditional ortho drawings.

At this point we still produce detailed orthos but with the other requests I wonder if a fully detailed ortho is a waste of manhours. I've been thinking of stripping the orthos down to essentially a set of erections drawings with minimal dimensions and letting the isos take care of the details.

So Pipers: What are your thoughts? Are Orthos yesterdays news? Is it all about models and Isos ... are Isos even going to stay around? Why not just hand the contractor the model, and let him spool it out from there? Why not just site run everything?

Please Discuss ... I'm guessing there will be some interesting replies! :whistle:
- If you're the smartest person in the room ... you're in the wrong room.
Last Edit: 2 years 8 months ago by Anton.

Piping orthos 2 years 5 months ago #9106

  • knives
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In our recent projects, we have proposed to entirely strike out preparation of piping orthos (or piping general arrangement drawings) especially if the project and client are looking for opportunity to reduce the cost. As you mentioned, if the 3D model (with iso drawings) are handed over to erectors, all the necessary details required can be taken from it. In the near future, I can only imagine that 3D model of the plant itself can be locally downloaded and viewed with same functionality as high end 3D model viewers (SPR and Naviswork) in a platforms like tablet and smartphones.

Piping orthos 2 years 5 months ago #9107

  • Anton
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Currently, the project I'm working on (In the region of $900m TIC), we will not be producing Piping Orthos.

Everything is being produced with Isos, and the contractor will have access to the model.
It will require a considerable site support presence from piping, during construction to get it across the line. This is a very aggressive, fast track project, with deliverables from piping being measured in terms of meters iso'd per week.
So far, everyone is happy with how it's working .... still keeping the fingers crossed!
- If you're the smartest person in the room ... you're in the wrong room.
The following user(s) said Thank You: RobbC

Piping orthos 2 years 5 months ago #9108

  • MMC
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I would agree that fully detailed Orthos are a waste of manhours these days when piping is detailed in 3D Model and isometrics extracted. Orthos such as General Arrangements, depending on your terminology, are still a class 1 document in most client specifications meaning they have to be approved by client which can affect schedule, in current project I have managed to 'downgrade' to class 3 same as Isometrics meaning issued for information based on we review all lines in 3D Model Review.
However I like Anton's suggestion of providing with minimum dimensioning which in construction phase will still allow to easily locate the pipe(s) and visualize the adjacent piping/equipment and then use the Isometric for fully detailing.
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