Dear Contractor Friend-
I hope you are doing well and that your 2017 is off to a good start. I know we don't always get along but I wanted to reassure you that I really do like you. You take our drawings on paper and coordinate the construction of that design so that it exists as a real thing in the world. That's really cool. I know how hard it is to do that and I have a great deal of respect for what you do. Your job is not an easy one.
Of course, our job isn't a cake walk either. We have to balance and give form to our clients' needs, wants and desires and create a design that adheres to local laws (zoning, codes, etc.) as well as universal laws (beauty, gravity, etc.). We have to anticipate everything and document it in such a way that you can build it.
We of course do make mistakes from time to time. I admit it, and I'm sure you'd admit the same thing. But at the end of the day we're all on the same team: we both share the common goal of building something good for our client.
So here's why I'm writing you: if you see something in the drawings that doesn't seem quite right, could you pick up the phone give me a call? You're a smart person: if something seems wrong, it probably is. So if, for example, your reading of the drawings implies that a set of steps going into a pool starts above the top edge of the pool and stops before it reaches the bottom, maybe next time you could give me a call and we could figure it out before the concrete hardens. I would appreciate it.