Which decisions belong to each role?
Write the boundary into the work order and raise missing decisions rather than allowing them to become silent drafting assumptions.
| Topic | Engineering | Drafting |
|---|---|---|
| Topology | Select and approve | Draw approved paths |
| Ratings | Calculate and approve | Record supplied values |
| Protection | Study and define | Draft supplied intent |
| Layout | Approve requirements | Coordinate approved geometry |
| Issue | Engineering sign-off | Document check |
How do data center standards fit?
TIA-942 covers data center telecommunications infrastructure, including electrical infrastructure. The Uptime Institute Tier Standard: Topology addresses topology and performance. Neither source transfers project engineering responsibility to a drafter.
Sources: Telecommunications Industry Association: ANSI/TIA-942 Telecommunications Infrastructure Standard for Data Centers, Uptime Institute: Tier Standard: Topology
Common questions
What else should the bid team know?
Can a drafter select redundancy?
No, not in a drafting-only scope. The engineering team supplies and approves topology.
Can open design inputs stay on a review drawing?
Yes. Mark them clearly as open and assign them to the responsible reviewer.
Who signs the engineering?
Only the registered engineer responsible for the job performs engineering sign-off.
Primary sources
- ANSI/TIA-942 Telecommunications Infrastructure Standard for Data CentersTelecommunications Industry Association
- Tier Standard: TopologyUptime Institute
- NFPA 70, National Electrical CodeNational Fire Protection Association
- NFPA 110, Standard for Emergency and Standby Power SystemsNational Fire Protection Association