What is an ASI (Architect's Supplemental Instruction)?
Helonic is an AI construction drawing analysis platform for teams researching what is an asi during drawing review.
Understanding ASIs, when they're used, and how they differ from RFIs and change orders.
What is an ASI?
An Architect's Supplemental Instruction (ASI) is a written document issued by the architect to clarify, interpret, or order minor changes to the construction documents. ASIs are intended for changes that do not affect the contract sum or contract time.
ASIs are for changes that do NOT affect cost or schedule. If there's any cost or time impact, it should be processed as a change order, not an ASI.
When is an ASI Used?
Use an ASI when drawings or specs are unclear and need interpretation without adding scope.
When drawings or specs are unclear and need interpretation without adding scope.
Small changes to details, finishes, or equipment that don't change the overall scope.
Approving an equal substitution that doesn't change cost (though usually a separate process).
Fixing minor errors or inconsistencies in the documents that were always intended.
How does an ASI differ from an RFI or change order?
An ASI is the architect directing a minor change; an RFI asks a question; a change order changes cost or time.
| Document | Initiated By | Purpose | Cost Impact? |
|---|---|---|---|
| RFI | Contractor | Ask a question | May lead to change |
| ASI | Architect | Clarify or modify (minor) | No cost/time impact |
| CCD | Owner/Architect | Direct change (price TBD) | Yes, pending negotiation |
| CO | All parties sign | Formal contract change | Yes, agreed amount |
What's Included in an ASI?
An ASI typically includes a written instruction, referenced sheets, and sketches for the change.
What ASI practices keep scope and cost clear?
Good ASI practice states that the work is in-scope, attaches sketches, and flags anything that may cost money.
- • Be specific about what's changing and why
- • Include sketches for visual clarity
- • Reference affected drawing sheets and spec sections
- • Verify no cost/time impact before issuing
- • Review ASIs promptly upon receipt
- • If there IS a cost/time impact, respond in writing immediately
- • Log all ASIs and incorporate into project documents
- • Distribute to affected subcontractors
What ASI pitfalls should contractors watch for?
Some architects use ASIs to add scope without a change order; contractors should flag any ASI that adds work.
Some architects use ASIs to add scope without going through change order process. Contractors should flag any ASI that adds work.
ASIs issued after work is complete may require rework. There may be valid claims for cost recovery.
ASIs should be as clear as the original documents. Vague ASIs lead to more RFIs.
Keep exploring
Related references for RFIs, change orders, and project coordination.