I don't want to speak for Richman, so I look forward to his response, but my take on this is that this file looks like his budget worksheet as the general contractor. What you do with this that as you get the bids back from the subcontractors you fill in the bids so you get an overall view of the entire jobs costs. You don't give this to the subcontractors. It's either that or he uses this as a worksheet for his estimates. Every contractor has their own style so I hate to guess how he does things.
Maybe I misunderstood your original question but I took it to mean you were looking for something like specs so that every contractor is bidding the exact same scope of work. To me this worksheet does not accomplish that. Specs are always job specific unless you are a production home builder. Thats why it is so difficult to answer your question. I will work on something to give you a better idea of what I am talking about but for now I will share with you my worksheet I use when comparing subcontractor bids.