Never use nominal dimensions especially in a large project. You will end up with Creep...m
Agreed. it's better to draw everything accurately. We don't round though. I keep the accuracy high. if a weird dimension shows up in a string. We go looking for the problem and fix it. Last thing we need is dimensional creep where everything is off by fractions of an inch in a scaled drawing by by feet during construction of a building that's hundreds of feet long. (Some people get careless when using snaps, especially perpendicular)
Know of one drafter round off a dimension for an angle. He never told anyone about it. (Didn't draw the angle correctly in the first place and didn't think it was important enough to fix it). A year later in the field when they are trying to fit some structural steel beams and wondering why nothing lines up.....
As a former boss used to say, the great thing about cad is that you can be accurately wrong.
