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Phasing Conundrum - Best Practice?

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    Phasing Conundrum - Best Practice?

    We are working on a complex project, which is a single building that has a number of phases of construction. Our current phase (Phase 3) is the base-build and the CAT-A fit-out. Basically, a shell and core that is finished to a standard that the building could be occupied. The next phase (Phase 4) is the tenant fit-out (CAT-B).

    Phases 1 & 2 were site temporary works and site permanent works respectively.

    The original intent was that the same contractor and design team would continue the next phase and it was my intention to create the works as a separate phase within the same Revit model. At final hand-over, the Client and tenant get a single model file for each discipline.

    The Client has thrown a spanner in the works by deciding to tender Phase 4 as a separate contract with the same design team, but intending there to be a different Main Contractor. This means that the Phase 3 model has to be taken to Stage 5 (as-constructed) while the Phase 4 model is still at Stage 4 (for construction). For example, the Phase 3 MEP installations will have to be completed, tested, commissioned and warrantied by the original contract team before the Phase 4 contract team can touch them.

    Key decision - do we develop Phase 4 as an entirely separate set of models, or do we continue with the original plan? The Phase 3 and Phase 4 models will impact each other, so the latter option involves us modeling changes twice (and there will be changes). Both options seem to come with some pain attached...

    Of course, the current Main Contractor may just decide not to cooperate and may refuse to allow their model to be developed for Phase 4 at all..!
    Last edited by john.warburton; January 30, 2018, 10:11 AM.

    #2
    IMHO i'd be splitting off separate models for separate contractors. Either way everything needs doing twice anyway but you won't have the confusion of phases/ worksets/ whatever.
    You're client may have the attitude that they're getting two for the price of 1 but all of a sudden 1 job has become 2 jobs. Be sure to charge accordingly.
    There are no stupid questions, only stupid people

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      #3
      Originally posted by elton williams View Post
      1 job has become 2 jobs. Be sure to charge accordingly.
      This is primary.

      Comment


        #4
        Originally posted by elton williams View Post
        You're client may have the attitude that they're getting two for the price of 1 but all of a sudden 1 job has become 2 jobs. Be sure to charge accordingly.
        Trust me, I made it clear to my Director that he needed to put together two prices - one with the current contractor continuing to the next phase, and one where he does not.

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          #5
          The question may be moot in any case. The Contractor has indicated that it is their initial reaction that they are not inclined towards making the model available for a third party to use. You can see their point. My Director's reaction was that we would just use CAD for the next Phase... :banghead:

          Comment


            #6
            Originally posted by john.warburton View Post
            we would just use CAD for the next Phase... :banghead:
            If CAD = Computer Aided Design, isn't Revit CAD?
            I used to be high on life, until I realised it was cut with Morons.
            Combating ignorance daily through learning.

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              #7
              Originally posted by john.warburton View Post
              ...model has to be taken to Stage 5 (as-constructed) while the Phase 4 model is still at Stage 4 (for construction).
              'Stage 5' meaning as-built scan data for true conditions? Sounds to me like getting source files to pull into Navis and spit out some NWCs for R18 along with the cloud data.

              Originally posted by john.warburton View Post
              ...the current Main Contractor may just decide not to cooperate and may refuse to allow their model to be developed for Phase 4 at all..!
              Sounds like they have some beastly contract language going for them

              Comment


                #8
                Originally posted by Tim West View Post
                If CAD = Computer Aided Drafting, isn't Revit CAD?
                Corrected that for you Tim!

                Comment


                  #9
                  Originally posted by Tim West View Post
                  If CAD = Computer Aided Design, isn't Revit CAD?
                  Of course it is!, but in our days most part of people thinks thats CAD is related to AutoCAD and that Revit is another thing, BIM for example!!
                  Andres Franco - Architect - BIM Coordinator
                  Revit Certified Professional - AutoCAD Certified Professional
                  "I became insane, with long intervals of horribly sanity"
                  E.A Poe

                  Comment


                    #10
                    Originally posted by Tim West View Post
                    If CAD = Computer Aided Design, isn't Revit CAD?
                    Ouch! That must have hurt
                    BIM is all about the proces..blah blah blah
                    Last edited by HansLammerts; February 2, 2018, 11:02 AM.

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