Direct Answer
Most construction contracts specify a 7–14 calendar day RFI response period. Structural RFIs requiring design decisions may take longer, while simple clarification RFIs can often be answered in 24–48 hours. If an RFI response is needed urgently due to a fabrication stoppage, escalate through the GC immediately and document the timeline.
Full Explanation
The AIA General Conditions (A201) and most public works contracts specify that the architect (and engineer by extension) must respond to RFIs within a 'reasonable time,' often defined as 10 working days. However, complex structural RFIs that require analysis or design revision can legitimately take longer. If an RFI is holding up fabrication, communicate the schedule impact in the RFI itself and follow up in writing with a deadline. The GC can escalate to the engineer if the response is unreasonably delayed.
What This Means for Your Shop
Unreasonably delayed RFI responses are a compensable delay event if they cause a production stoppage. Document the delay: when the RFI was submitted, when you stopped production, when the response was received, and the cost of the delay. This documentation supports a change order claim.
Common Mistakes
Verbally escalating an overdue RFI without documenting the escalation. All RFI follow-up should be in writing (email at minimum) so there is a timestamped record.
Recommended Process
Set a follow-up reminder in your RFI log for 5 days after submission. If no response, send a written follow-up to the GC referencing the RFI number and the schedule impact. Escalate to a project manager if the 10-day deadline passes without a response.