Which busway inputs matter?
Register route length, rating from the approved schedule, tap-off units, elbows, joints, supports, fire stopping and connection work only where the documents define them.
| Input | Measure | Source |
|---|---|---|
| Route | Run and length | Plan or model |
| Sections | Straight and fittings | Layout |
| Tap-offs | Type and count | Schedule |
| Supports | Spacing or system | Approved detail |
| Interfaces | Panels and equipment | SLD and scope |
Sources: Construction Specifications Institute: MasterFormat 2026, National Fire Protection Association: NFPA 70, National Electrical Code, Telecommunications Industry Association: ANSI/TIA-942 Telecommunications Infrastructure Standard for Data Centers
How should a route allowance be labelled?
State why the route is not measurable, the temporary basis and the source needed to close it. Do not present an unverified route as a measured quantity.
- Current background
- Route start and end
- Fittings and tap-offs
- Support and fire stopping
- Unresolved coordination
What should the final busway review check?
Check that the route, tap-offs and interfaces agree with the SLD and equipment schedule. The estimator then applies the approved supplier or library basis.
Common questions
What else should the bid team know?
What should a busway estimate include?
It should identify routes, sections, fittings, tap-offs, supports, interfaces and the source for each quantity.
Who reviews a busway estimate?
The estimator checks quantities and commercial inputs, while design and supplier reviewers confirm the technical basis.
Does this page create project quantities?
No. Use the issued drawings, schedules and specifications. The estimator reviews and approves the project basis.
Primary sources
- MasterFormat 2026Construction Specifications Institute
- NFPA 70, National Electrical CodeNational Fire Protection Association
- ANSI/TIA-942 Telecommunications Infrastructure Standard for Data CentersTelecommunications Industry Association
- Tier Standard: TopologyUptime Institute