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    #1

    Project level using 100'-0"

    Guys,

    Have y'all come across with this? This is not the first time that I was asked by the consultants that if they can use 100'-0" level for their first floor "project" level as supposed we use 0'-0" for our first floor. We use either 0'-0" (project) or whatever XXX' something above sea level for (shared) level for all our project. So 100' is not correct either way. But I keep seeing them from the consultant's model and this time around they ask if they could "change it"?

    What's your take on that? I don't like it at all since 100' is not a true elevation. I think this is an old school way for drawing. In the event of having any basement level below first floor, the elevation is not going to be negative value. (90'-0" or something)

    Anyway, any feedback is appreciated.

    Thanks
    Philip Chan
    Practice Technology Manager | HKS
    http://phil-osophyinbim.blogspot.com/
    Tags: None
    #2
    We start at 0m usually, but sometimes we use the actual site elevation too....
    Michael "MP" Patrick (Deceased - R.I.P)

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      #3
      Never understood the 100'-0" thing. We use 0'-0" or the true datum above sea level.

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        #4
        We do the 100'-0" as FFE on Level 1 thing here, as well. It drives me off the wall. Evidently SOME people in the industry consider this a standard. I emphasize SOME because the people i talk to insist that its *all* but the number of firms ive seen doing it is pretty split down the middle. Me personally, i use 0-0" or the actual Elevation.

        But our template DOES start out 100 feet up, for... everyone else.
        Aaron "selfish AND petulant" Maller |P A R A L L A X T E A M | Practice Technology Implementation
        @Web | @Twitter | @LinkedIn | @Email

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          #5
          Originally posted by Parametric Snowman View Post
          any feedback is appreciated.
          Most probably it's to allow for positive numbers in sub-first floor levels. Seems like nonsense to me - since you need to set a datum at some point - and positive would be up, negative would be down (unless you did just use real sea level heights).

          But I suspect you also mean "ground floor" when you say "first floor" don't you, so couple that with the imperial dimensions, it's just one of the regional differences (like inverted swings on doors and windows) that I just simply can't relate to. Either way, I wouldn't stand for it.

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            #6
            In Colorado we started at 100'-0" so you don't have negative numbers for basements. I'm not sure why people don't like negative numbers but they don't. Makes them feel bad I guess.

            All we did was raise all our levels to 100'-0" in our templates, adjusted the elevations and had no problems. You can move the survey base point to get the right civil numbers.
            Scott D. Brown, AIA | Senior Project Manager | Beck Group

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              #7
              I have been told... because its harder to do the match on negative numbers... IDK why, but that's what I am told.
              -Alex Cunningham

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                #8
                The problem is Arch model always start first, then the consulatant's models. and our template use 0'-0" for project, so if (they) dont' follow, it just going to be an issue later.

                Snowyweston,

                yes, first floor (in US) is the ground floor in (UK), as i grew up in a british colony, where I learned ground floor is 1st here in US...
                Philip Chan
                Practice Technology Manager | HKS
                http://phil-osophyinbim.blogspot.com/

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                  #9
                  Scott,
                  do you put any sort of 'warning label' or general information comment somewhere in your model so people know that all the relative elevations will be 100' out? This is a common request by clients and I always try to steer them away from it to avoid confusion downstream. Any issues when others link into or from your models?

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                    #10
                    Phillip-

                    Its not an issue, because you can use EITHER Shared Coordinates, OR Relocate Project, to move the model up and down after the fact, to match anyones stuff. It wont mess up any of your drawings. I find the 100'-0" thing stupid, personally. If they are under you contractually, i would refuse to do it on the basis that its dumb.
                    Aaron "selfish AND petulant" Maller |P A R A L L A X T E A M | Practice Technology Implementation
                    @Web | @Twitter | @LinkedIn | @Email

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