Nothing kills quality as much as a misunderstanding during the bid phase. In addition to collecting and reviewing subcontractor bids, we do our own take-offs and share them with subs after obtaining their proposals. We do this to make sure each sub has included all areas, details and phases for their portion of work. If they've provided a lump sum proposal and discover a take-off discrepancy during installation it's too late too change course and someone has to compromise. We try to prevent this and at the same time we get to calculate and monitor price/unit and ensure fair pricing vs. expected quality.
It can be tricky connecting the dots between plans and elevations to truly understand how things look in 3D. Rather than simply handing the plans off to framing subcontractors, we think through the framing ourselves and produce notes and interpretations like these. Prior to construction we meet with the framers to discuss each person's interpretations and ask architects for clarification on details.
We work hard to find the hidden information in plans to meet the aesthetic expectations of high quality modern architecture. Multiple planes intersecting are common challenge where we know a crisp point will be important. We made these sketches to demonstrate an issue for architect approval, then used them to communicate its importance to the framers.