We are trying to decide if we want to use 1/8"=1' or 3/32"=1' scale for a project that includes remodel of the existing building with very complicated mechanical systems. As always when decisions need to be made there are proponents of different option. The major driver for the 3/32" scale is cost, claiming that it will have reduced number of drawings, while the proponents of 1/8 scale are bringing up clarity of drawings and impact on construction since the contractors might be using drawings to scale off and do take offs.
I want to reach to CAD community and see what are your thoughts and what would you say that it would be added hours to produce a drawing in 1/8" vs 3/32". In my opinion of they are  using master drawings and create plot sheets in 3/32 it should not require much more effort.

Thank you.

John,

That is what I have been saying only real cost is associated with creating additional paper space layers and printing cost due to additional drawings. I will tell you that consultants claim that it will cost over $400,000 for additional 100 sheets which IMO is overblown.