Please note, if you’re currently using the “Refrigeration / Gas”, your instructions will vary slightly from what I’m showing below. Please contact me directly for assistance. {12/06/2010 Editted to Add: You can only use this function to generate one extra byproduct at at ime - you can either generate Refrigeration / Gas or Glycol. This is a master setting.}
Let’s start with some background work. We’re going to add Glycol into our libraries in AutoBid Mechanical. This will allow us to calculate cost (and labor) if necessary.
I’ve added this library item called Glycol (at all levels) with a description of Ethylene Glycol. Note my catalog name (the item highlighted in the tree on the left hand side is “Glycol”.

Now, close clear out of AutoBid Mechanical and go into AutoBid Mechanical Utilities. (From the Start Menu, All Programs, AutoBid Mechanical, select Mechanical Utilities).
Once in the AutoBid Mechanical Utilities, go to Tools --> Configure Extra Pipe Items.

This window controls what library item is generated and how it reports. We’ll fill it in to look for the Library Catalog Name “Glycol” that we created above, we’re calling the System Name “Glycol”, we’re outputting gallons, and we’re going to create a new report category called (what else) “Glycol”. You can change the names to whatever you feel is most appropriate.
We’re going to generate the glycol based on the volume of pipe, so make sure “Volume” is selected. Close out of Mechanical Utilities.
Reopen the AutoBid Mechanical program. Underneath Tools --> Company Settings, turn on: “Generate Glycol/Glycol”. (If you haven’t gone into the Mechanical Utilities above, this will say “Generate Refrigeration / Gas”).

We told the system to estimate the glycol in AutoBid Mechanical based on the volume of the pipe. We want to generate our glycol in gallons based on multiple different %s of glycol used. The formula looks something like this:
Volume of pipe (ft3) x 7.48 (gallons / ft3) x __% = Gallons of glycol
To get the correct gallons /volume, I’ll need to use the following factors:
10% - 0.748 (gallons/ft3)
20% - 1.496
30% - 2.244
40% - 2.992
Cleary, you could keep going if you needed to…
Now, we're going to use those conversion factors to calculate how much glycol we need. From the Main Menu, select Piping--> Definitions --> Systems for Glycol.
Let’s add 10%, 20%, 30%, and 40% to our Systems. We can’t use percent signs or spaces, so we’ll input them as 10Percent, 20Percent, 30Percent, and 40Percent respectively.

Close that window. Again, from the Main Menu, select Piping --> Definitions --> Conversion Factors for Glycol. Here, I will add a type called Ethylene Glycol (my Description from the Library Catalog I created earlier), and then underneath my 10Percent, 20Percent, 30Percent, and 40Percent columns, I’ll put in my conversion factors from above.

Now, I've got Ethylene Glycol set up with different percentages. All I have to do to generate this in my projects is to tell AutoBid which system(s) need glycol.
In my systems window, I can select a “Glycol Type” of Ethylene Glycol and the appropriate percentage for this system underneath “Glycol System”.

Now, when I do my takeoff for that system, I’ll automatically generate Ethylene Glycol. I can apply different percentages based on my systems, as well. This is a master setting, so it will be availbe in all of your projects going forward.
This is just one example of how you could use this feature. Other uses include painting the pipe or pipe markers. If you've got other uses, please share them!
Happy estimating!