SD vs DD vs CD explained for AEC teams: what each phase decides, what the set delivers, the rough fee split, and who signs off at each gate.
Decode A-101 and the U.S. National CAD Standard: discipline designators (A, S, M, E, P, C, L) + sheet-type numbers + sequence. Full lookup tables and a sample sheet index.
An RFI asks a question; a submittal sends information for approval. Here's the workflow, who initiates, turnaround, and a quick decision cue for PMs.
A practitioner's guide to CD milestone percentages: what 50%, 90%, and 100% completeness mean, what reviewers check at each, and how 100% CD differs from IFC.
