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Thread: Mechanical TAG: Revit is changing My formula to another formula

  1. #1
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    Mechanical TAG: Revit is changing My formula to another formula

    Hi,

    I've created a Mech Tag for tagging Radiators, i've added Liters per hour to the formula.

    My formula
    (Power x (0,86 / ΔT), Example: 10000w x 0,86 / 15 = 573,3 Liters per hour.

    After clicking OK in the "Calculated Value" window,

    Revit changes the formula to (Power x (0,9 m2/kN / ΔT) Example: 10000 x 0,9 / 15 = 600 Liters per hour.

    The difference is to big, especially on larger projects.

    Does anyone have an idea why Revit is changing my formula?

    I'm located in Sweden, we don't use (m2/kN), could this be the problem?

  2. #2
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    Solved it with another formula.

    It seems that the decimals is creating the problem.

    The new formula, if anyone is interested is: "Power * ((86 / 100) / ΔT)"

    Also works with MagiCAD "MC Piping Power * ((86 / 100) / ΔT)"

  3. #3
    Moderator cellophane's Avatar
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    Thanks for posting your solution

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