Also, we didn't want to make larger scale views and add more sheets to the drawing set, adding to labor and material costs. We are not drafting anymore, we are modeling.īreaking from tradition, why are we restrained to 1/8" scale? Historically, it was because we only wanted to "show it once." When we were hand drafting, we only wanted to represent objects one time so we didn't need to correct multiple views upon making a single change. Diagrammatically it isn't a problem to show things offset, but this example illustrates that it is not good practice to model it like we did when we were drafting. Now, consider it would take two five-inch pipes with two inches of insulation to equal a nine-inch separation. If we have cold and hot water, throw in a hot water return line, fire protection main, and a gas line, the problem is compounded several times over. By separating them further, we are not being efficient with the allotted space, and we are potentially creating false clashes in the model. Installed, if the pipes are each a half-inch diameter with two inches of insulation, then really they should be modeled about six inches apart. This is to allow room for nine-inch-tall text (in model space) to be legible, without overlapping the opposite line work or text. Traditionally, cold and hot water lines are drawn nine inches apart. Let's look at a typical 1/8" scale domestic water plan. Let's start with a simple example of line spacing. There are some diagrammatic practices on floor plans that are not necessarily still relevant in Revit. Understand why "this is the way we have always done it," and ask yourself if the reasons are still relevant. This is where we need to remember this isn't your father's drafting table. While Revit is very good at representing pipes and valves precisely where they are, it struggles a bit at being diagrammatic.
Historically, plumbing has been represented diagrammatically to improve drawing clarity while minimizing the number of views required.
#Hot water cad symbols for plumbing software
That's not to say Revit does not respect good drafting practices, but the software focuses more on how plumbing will be installed rather than how it is easiest to read on a two-dimensional drawing. The plumbing transition to Autodesk® Revit® has some challenges stemming from a history of good drafting practice. Back April 16th, 2015 New Best Practices for Plumbing
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