Seven parts, one skeleton
After reading several hundred sealed engineering documents across five document types, I started seeing the same structure repeated regardless of the discipline, the regulation, or the signer's license class.
Every sealed engineering document in Ontario follows the same skeletal sequence:
- Observation - The professional was physically present and observed something.
- Finding - The professional interprets what they observed against a standard.
- Recommendation - The professional states what should happen next.
- Photo evidence - Visual documentation that anchors the observation to reality.
- Regulatory citation - The specific clause, section, or standard that gives the finding its authority.
- Seal and signature - The licensed professional attaches personal liability.
- Revision lifecycle - The document has a version history that tracks re-issuance.
This is not a template. It is the underlying grammar of sealed engineering work in Ontario. Every document type I will walk through below composes these seven parts in a different order, with different emphasis - but none of them omits a single one.
Field review reports - OBC 1.2.2.2
Ontario Building Code section 1.2.2.2 requires that a registered code agency retain professionals to conduct field reviews during construction. The resulting field review report documents what the engineer or architect observed on site, whether the work conforms to the approved drawings, and what follow-up is required.
The observation is the site visit itself. The finding is "conforming," "not conforming," or "not reviewed." The recommendation ranges from "proceed" to "stop work and remediate." Photos are load-bearing - a finding without a photo is a finding without evidence. The regulatory citation is always 1.2.2.2, sometimes supplemented by CSA material standards (A23.3 for concrete, S16 for steel, O86 for wood). The seal is the P.Eng or OAA stamp. The revision lifecycle tracks re-issued reports when a non-conformance is later resolved.
Field reviews are the highest-frequency sealed document in Ontario construction. A twelve-engineer firm might produce 40–80 per month, every one signed and sealed.
Reserve fund studies - Ontario Condo Act §94
The Condominium Act, 1998, section 94, legally mandates a reserve fund study for every condo corporation in the province every three years. Ontario Regulation 48/01 spells out the content requirements. The study must be prepared by a qualified professional - P.Eng, architect, certified engineering technologist, or Certified Reserve Planner, as prescribed by O. Reg. 48/01.
The observation here is the building condition assessment that feeds into the study - a physical walkthrough of the property documenting the state of every major building component (roof, windows, parking structure, elevators, mechanical systems). The finding is the remaining useful life of each component and its projected replacement cost. The recommendation is the funding plan: how much the condo corporation needs to contribute annually to cover projected expenditures over a 30-year horizon.
Photo evidence is standard practice, though O. Reg. 48/01 does not explicitly mandate it - the professional's standard of care does. The regulatory citation is §94 plus the specific regulation sections that govern content and format. The seal and signature carry the same personal liability as any other sealed document. And the revision lifecycle is built into the statute itself - the 3-year mandatory update cadence means every reserve fund study is, by definition, a revision of its predecessor.
The structural difference from a field review report is the cashflow projection. A field review is a snapshot observation; a reserve fund study is a 30-year forecast with amortization math. The seven-part skeleton is the same. The computational layer on top is what makes it a different product.
Condition assessments
A structural condition assessment is a narrative evaluation of an existing building - its current state, deterioration mapping, remaining service life, and recommended interventions. Triggered by property transactions, insurance requirements, capital planning, or post-event damage evaluation (ice storms, floods, seismic activity in other provinces).
No single statute mandates condition assessments the way §94 mandates reserve fund studies. Instead, condition assessments are governed by the professional's standard of care under PEO's Regulation 941 (Professional Misconduct) and the common-law duty of care. An engineer who conducts a condition assessment and misses a structural deficiency faces the same liability exposure as one who files a defective field review.
The seven parts map directly. Observation: the site inspection. Finding: the deterioration classification (often graded on a severity scale). Recommendation: repair, replace, monitor, or demolish. Photo evidence: typically extensive, with annotations. Regulatory citation: PEO Reg 941, CSA S6 for bridges, CSA A23.1 for concrete, whatever material standard applies to the specific elements inspected. Seal and signature: P.Eng stamp on the report cover and sometimes on individual assessment pages. Revision lifecycle: condition assessments are often re-issued after remediation to document the updated state.
Phase I Environmental Site Assessments - O. Reg. 153/04
A Phase I Environmental Site Assessment is a records-based investigation into whether a property has been contaminated by current or past uses. Ontario Regulation 153/04 under the Environmental Protection Act prescribes the content, methodology, and reporting requirements. The standard reference is CSA Z768.
The observation in a Phase I ESA is not primarily visual - it is investigative. The professional reviews historical records (fire insurance plans, aerial photographs, environmental databases, regulatory filings) and conducts a site reconnaissance to identify potential sources of contamination. The finding is a statement of whether there are areas of potential environmental concern (APECs) on the property. The recommendation is whether a Phase II ESA (involving actual soil and groundwater sampling) is warranted.
Photo evidence documents the site reconnaissance. Regulatory citation is O. Reg. 153/04 sections and CSA Z768 clauses. The seal is the Qualified Person's (typically a P.Eng or P.Geo) signature and stamp. Revision lifecycle applies when a Phase I is updated for a new transaction on the same property - the regulation specifies currency requirements for records searches.
The structural difference from a field review is the records-research component. A field review is observation-forward - the engineer goes to site and reports what they see. A Phase I ESA is investigation-forward - the professional searches historical records and reports what the history suggests. Both end with a sealed professional opinion. The seven-part skeleton holds.
Building envelope reports
Building envelope condition assessments evaluate the exterior enclosure of a building - cladding, windows, roofing, waterproofing, sealants, air barriers. Commonly triggered by water infiltration complaints, capital renewal planning, or Tarion warranty claims on new construction.
The observation is a combination of visual inspection, often supplemented by infrared thermography to identify moisture intrusion and thermal bridging. The finding maps each envelope component to a condition rating. The recommendation specifies repair scope and urgency. Photo evidence is typically the densest of any sealed document type - an envelope report on a 20-storey building might include 80–120 annotated photos.
Regulatory citations draw from the Ontario Building Code's energy and environmental separation provisions (SB-10 and SB-12 supplementary standards), climatic design data (SB-1), CMHC best-practice guidelines, and Tarion warranty standards for new construction. The seal is the P.Eng or OAA stamp. Revision lifecycle tracks re-assessments conducted after remediation.
Why the shared structure matters
The seven-part skeleton is not an academic observation. It has three practical consequences for any firm producing sealed engineering documents:
Quality assurance is transferable. A firm that builds a rigorous QA process around one document type - say, field review reports - already has 80% of the QA infrastructure for every other sealed document type. The checklist items are the same: Did the observation get documented? Is the finding supported by evidence? Is the regulatory citation correct? Is the revision history clean?
Template variance is a surface problem, not a structural one. Each firm has its own house format for each document type, and those formats differ in layout, section ordering, and naming conventions. But underneath the formatting, every template is arranging the same seven parts. A tool that understands the skeleton can adapt to any firm's surface format - the customization is in the arrangement, not the substance.
The attestation boundary applies universally. The moment a licensed professional signs a sealed document - field review, reserve fund study, condition assessment, Phase I ESA, envelope report - they are attaching personal liability to the content. Any tool involved in producing that content needs to make the signing moment explicit and auditable. This is not specific to one document type. It is a property of the category.
The firms that produce sealed engineering documents already know all of this intuitively. They have been doing it for decades. What they have not had is tooling that recognizes the shared structure and builds around it. The drafting workflows in most firms are still document-type-by-document-type, each with its own Word template, its own folder structure, its own review process - as if these documents have nothing in common.
They have almost everything in common. The tooling should reflect that.