Direct Answer
Evaluate detailers on structure-type experience, software platform, RFI responsiveness, and references from fabricators (not just GCs). A firm that has detailed similar connections and tonnage will produce fewer RFIs and cleaner BOM outputs than a generalist who is learning on your project.
Full Explanation
Key evaluation criteria: (1) Experience with your structure type — seismic moment frames, heavy industrial, multi-story, long-span trusses each require specialized knowledge. (2) Software — Tekla Structures is the industry standard for complex work; SDS2 is strong for repetitive structures. (3) BIM/coordination capability — if your project requires federated IFC coordination, confirm the detailer can export IFC and work in a CDE. (4) Submittal history — ask for average revision rounds per project. (5) Communication — test their RFI response time during the proposal phase.
What This Means for Your Shop
A detailer who is unfamiliar with your project's connection type will generate more RFIs, take longer, and deliver drawings with more errors. Specialization saves money in the long run.
Common Mistakes
Selecting a detailer who quotes low but adds change orders for every design revision. Get a clear scope that defines how revisions, addenda, and design changes will be billed.
Recommended Process
Issue a simple RFP that includes the design drawing set, project schedule, and submittal requirements. Evaluate proposals on schedule, experience, and scope clarity — not just price. Call two or three fabricator references and ask specifically about drawing accuracy and RFI turnaround.