Post Echo - Units - Accuracy - Tolerance

I saw David Baldacchino's tweet yesterday sharing a link to a blog post for another software product called FME from Safe Software. The article goes into detail more related to their own product naturally but it does describe the math and computer problems that developers deal with. I found it quite interesting as well as confirming much of what I'd read and been told in the past.

Have a look! It's titled: "FME 2018 Infinity War: How Automatic Tolerance Defeats Infinite Precision without a Snap – but with Anchored Vertices!"

No Math Characters in Parameter Names

I've mentioned this before in the context of older posts but never in a dedicated post. Don't use characters that Revit respects as mathematical symbols in the parameters names you create. That means don't do things like this.

Revit will be nice and accept parameter names that include most if not all of them but when it comes time to do something more clever with the parameters you'll regret it. More clevererer? Like using the parameters in a formula, that's clever! You'll get messages like this one.

Easy to resolve, just don't use mathematical symbols in parameter names.

Bad Math and Construction

I was recently in a client's office that was having some equipment related issues in their men's bathroom. This involved some ceiling and wall alteration. While I was in the bathroom at one point I noticed this where some wall tile had been removed.

The correction is mine (red rectangle), in pencil naturally, I don't want to be accused of vandalism!

The last time I checked a calculator 40 + 56 = 96, not 106. When you add 29 to 96 you get 125, not 135. At least the harder multiplication of 14 x 4 = 56 is correct. I'm terrible at math...really bad...but even I caught this error. That's really bad when Mr. OpEd catches your math error!!

Well, maybe they were just building in a percentage for waste?