Planning & documentation
Planning a Prebid Walkthrough for Steel Building Work
Organize a steel building prebid walkthrough around access, existing conditions, occupied areas, and written questions shared with all bidders.
Define the condition and its scope
A walkthrough should expose observable constraints without making informal design changes.
A steel building proposal is a boundary between several businesses: the building-system supplier, concrete contractor, erector, enclosure installer, and trades that complete the occupied space. Cold-formed components may be included in one package and field-installed under another. Comparing the headline amount alone hides these handoffs. Start with the issued scope and give every bidder the same drawings, revision list, delivery assumptions, and request for written exclusions. Keep owner decisions visible beside contractor commitments so that an unresolved preference does not become an assumed inclusion.
References: Project Planning Guide · Commissioning documents: process, contents, and acceptance
Gather the inputs before deciding
Prepare a route that visits the delivery approach, laydown area, proposed footprint or alteration zone, utility crossings, occupied interfaces, and tie-in locations. Supply a plan that lets bidders locate observations consistently. Explain where access is permitted and coordinate the visit with the owner and responsible site personnel. Ask bidders to identify observed scope constraints and needed information rather than improvise solutions. An inaccessible area should be recorded as an investigation limitation, not assumed to match a nearby visible condition. For existing work, distinguish owner records from verified observations.
- Delivery and lifting access
- Existing building tie-in locations
- Occupied-area restrictions
- Shared question deadline
References: Project Planning Guide · Commissioning documents: process, contents, and acceptance
Set observable handoff deliverables
An answer given to one bidder in the field creates an uneven scope baseline.
| Input | Evidence to keep with it | Review status |
|---|---|---|
| Delivery and lifting access | Annotated access plan | Identify reviewer and written decision |
| Existing building tie-in locations | Dated existing-condition photographs | Identify reviewer and written decision |
| Occupied-area restrictions | Written common bidder clarification | Identify reviewer and written decision |
Sequence review and release
Issue the visit agenda and current scope before the walkthrough. During the visit, number observations and photograph them only from authorized, safe locations. Capture each question with its location and document reference. Afterward, separate factual clarifications from changes requiring design review, and distribute the formal answers to affected bidders through the agreed process. If a discovered condition materially changes the scope, let the owner and project team establish the revised bidding basis. Avoid a private side agreement with the bidder who first noticed the condition.
- Locate delivery and lifting access in the current record.
- Compare existing building tie-in locations with the table's evidence.
- Document the decision: Distribute material site observations through the formal bid record.
Worked project coordination example
At an addition walkthrough, one bidder notices an overhead utility crossing the delivery path. The team records the location and issues a common clarification instead of accepting a verbal delivery workaround.
Apply the stated release decision to the case: Distribute material site observations through the formal bid record. The responsible team determines acceptance for the actual project and records any condition that still requires resolution.
Keep a closeout record another team can use
The visit record should retain attendance, route, located observations, unanswered questions, formal clarifications, and any updated bid documents. Label photographs with the condition and direction shown. Record what the walkthrough did not verify, such as buried utilities or concealed support conditions. Before award, compare bidder assumptions with the clarified record and resolve contradictions. Give field leadership the relevant site constraints at kickoff. A prebid visit is valuable when its discoveries become shared procurement information; a photograph folder and informal recollections are not enough to preserve an agreed scope.
For this issue, include written common bidder clarification in the handoff. If review remains pending, identify the dependent work and its owner; do not present the record as a completed technical acceptance.
Common questions
Is a walkthrough statement a design approval?
No. Route technical changes through the responsible designer and formal clarification.
How should delivery and lifting access be documented?
Distribute material site observations through the formal bid record. Retain annotated access plan and check that the decision reached the team performing the dependent work.
Sources & further reading
Use the current documentation for the exact product and project. Source links do not imply a partnership or endorsement.
- Project Planning Guide U.S. General Services Administration / WBDG
- Commissioning documents: process, contents, and acceptance Whole Building Design Guide
Prepared with AI assistance. Linked references require current project-specific review. How these guides are prepared.
Prepare a supply inquiry
- Record the project drawing or detail and the specified product, profile, or system.
- List the complete configuration, physical units, quantities, and cuts per piece.
- Request current manufacturer documents; confirm compatibility, price, and availability before ordering.
- Obtain the responsible professional's review for loads, code requirements, or installation.