Steel Deck Coordination & RFI Management
Why RFIs Must Come Before the Shop Drawing Phase
Questions Get More Expensive the Longer They Remain Unanswered
In steel deck projects, RFIs are not merely problem-solving documents—they are risk-management tools. Every unresolved deck profile, attachment requirement, edge condition, opening detail, or specification conflict becomes progressively more expensive once shop drawings, fabrication, and installation activities begin.
The Cost of Waiting
Pre-Production Review
Lowest Cost & Highest Flexibility
Shop Drawings Created
Fabrication Starts
Field Rework Required
Where Flexibility Disappears
Questions That Should Be Resolved Early
Deck Profile Selection
Deck Gauge Requirements
Attachment Schedules
Pour Stop Details
Edge Conditions
Scope Responsibilities
Cost Impact Warning
3×–7×
RFIs resolved after shop drawing approval often cost several times more to address than questions identified during the pre-production review stage.
RFI
Best Practice
Resolve Design Questions Before Production Begins
The most successful deck projects treat RFIs as a pre-production planning tool—not a reactive field document. Every ambiguity removed before shop drawings begin reduces fabrication risk, accelerates approvals, protects the schedule, and prevents costly downstream revisions.
RFI Package
The Six Categories Every Steel Deck RFI Should Address
RFI
!
Cover every technical domain before the shop drawing cutoff
A thorough pre-production RFI package is organized around the six technical domains where ambiguity most frequently causes production holds. The safest path is to clarify all six before the fabricator’s cutoff.
01
Deck Profile & Gauge
Lock the exact product designation
Confirm the exact profile designation, steel yield strength, and base metal thickness for each zone of the project. If the engineer specifies a family without locking gauge, clarify before production.
02
Span Conditions
Define support behavior clearly
Identify all single-span, double-span, and cantilever conditions across the framing plan. Fabricators need to know whether panels are designed as simply supported or continuous.
03
Sidelap & End Lap Fastening
Confirm fastening type and spacing
Clarify fastener type, spacing, and pattern at sidelaps and end laps. Diaphragm capacity calculations depend on this data, so do not let the fabricator default to a minimum standard.
04
Edge & Pour Stop Conditions
Detail perimeter conditions completely
Capture every perimeter edge condition: pour stops, closure strips, fluted closures, and roof edge angles. These are among the most frequently under-detailed items in structural drawings.
05
Openings & Penetrations
Resolve every deck opening
Identify all openings larger than the pan width, including HVAC, plumbing, and electrical penetrations. Confirm whether supplemental framing is by the steel fabricator, the GC, or another subcontractor.
06
Surface Treatment & Coating
Confirm finish requirements early
Confirm whether panels require galvanized coating, primer, or bare steel. Specify any areas where paintgrip or HDG is required for corrosive exposure, since finish affects both lead time and cost.
RFI Takeaway
Clarify scope while the drawings are still moving, not after the shop package is submitted. Every unanswered question here becomes a schedule or cost issue later.
HOLD
Final Principle
Don’t let ambiguity move downstream into production
A complete RFI package keeps ambiguity from becoming fabrication delay, rework, or a change-order dispute.
Communication Protocol
Writing Effective Steel Deck RFIs
Actionable & Documented Answers
The quality of the answer you receive is directly proportional to the quality of the question you ask. Vague RFIs produce vague responses—leaving you with no firm basis to proceed.
Reference Exact Details
Cite specific sheet and detail numbers (e.g., "Refer to S-301, Detail 4"). Include marked-up PDF attachments to provide immediate visual context.
Document As-Drawn Conditions
State what the drawings currently show before asking your question. This protects you contractually and reduces back-and-forth clarification.
One Specific Question Per RFI
Multi-part RFIs invite partial responses. Submit separate RFIs for different issues to ensure cleaner tracking and comprehensive answers.
Propose a Well-Reasoned Solution
If you have a preferred resolution, state it explicitly. Engineers are more likely to approve a proposed solution than to draft one from scratch.
Define Schedule-Critical Dates
Tie the response-required date to your shop drawing schedule. This highlights the RFI as a schedule-critical milestone rather than just admin.
Core Principle
Actionable Communication
Transform your RFIs from simple queries into documented, schedule-critical milestones that provide a firm basis for fabrication and field work.
Pre-Production Coordination
Building a Pre-Production RFI Checklist
Every Unchecked Item Is a Potential RFI
Use this checklist during drawing review before authorizing shop drawing production. Any item that cannot be verified from the contract documents should be converted into an RFI and resolved before fabrication activities begin.
01 | Structural Drawing Review
□
Deck profile and gauge confirmed on plans and schedules
□
Single span, double span, and cantilever conditions identified
□
Diaphragm zones and fastening schedules verified
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Areas with differing deck requirements clearly defined
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Composite and non-composite deck zones identified
02 | Specification Review (Division 05)
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Applicable SDI standard identified
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Steel coating and surface treatment requirements reviewed
□
Construction load limitations and deflection criteria verified
□
Factory and field-applied sidelap fastening requirements confirmed
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Inspection, welding, and testing requirements reviewed
03 | Edge Conditions & Perimeter Details
□
Pour stop profiles detailed or referenced
□
Closure strip requirements identified
□
Roof edge angle size and attachment specified
□
Flute-fill requirements at walls documented
04 | Openings & Penetrations
□
Openings larger than one deck pan identified and dimensioned
□
Responsibility for supplemental framing assigned
□
Header and trimmer requirements fully detailed
□
MEP penetrations coordinated with structural deck layout
RFI Risk Indicator
All Items Verified
Clarification Needed
Issue RFI
Any unanswered checklist item should be documented, tracked, and escalated before shop drawing preparation begins.
CHECK
Coordination Best Practice
Share the Checklist Before the Kickoff Meeting
Distribute this checklist to the fabricator's project manager, Engineer of Record, and GC superintendent at least two weeks before the planned shop drawing submittal date. Early review creates time for resolution, reduces approval-cycle delays, and prevents avoidable fabrication changes.
RFI Closeout
From RFI to Production: Managing the Closeout Loop
LOOP
↻
An RFI is not closed until the response is tracked, documented, and acknowledged
Submitting the RFI is only half the work. A steel deck RFI that is submitted but not actively tracked can sit unresolved long enough to blow through the shop drawing deadline without anyone realizing it.
01
Track Against Shop Drawing Schedule
Use the fabrication deadline, not the project schedule
Create a separate RFI tracker that maps each open item directly to the shop drawing package it affects. If an RFI is not closed before the shop drawing goes out, it should trigger an automatic hold flag.
02
Log Verbal Responses in Writing
Confirm every spoken response before acting on it
Every verbal response must be documented in writing and confirmed by the engineer before the fabricator acts on it. Confirmed email chains or formal responses on letterhead are the only acceptable basis for production decisions.
03
Issue a Revised Drawing Where Required
Do not treat a design change like a simple clarification
When an RFI response constitutes a design change, the engineer of record must issue a formal drawing revision or ASI. A reply that says proceed per contractor interpretation is not a closed RFI.
04
Confirm Fabricator Acknowledgment
Make sure the response reaches the shop floor
Once an RFI is formally closed, confirm in writing that the fabricator has reviewed the response and incorporated it into the pending shop drawing. This prevents production from continuing on the original ambiguous version.
Why the Loop Matters
72%
of shop drawing revisions trace back to unresolved pre-production RFIs
2–3x
longer resolution time when RFIs are submitted during shop review
Closeout Sequence
Submit RFI with Marked Drawing
↓
Receive Engineer Response
↓
Confirm Fabricator Acknowledgment
↓
Close & Log with Reference
HOLD
Final Principle
Every ambiguity resolved before production is a risk eliminated
A disciplined pre-production RFI process is not administrative overhead — it is the most cost-effective investment before steel deck production begins.
