Structural Engineering Help Center — Ontario
Guides, how-tos, and answers for every phase of structural engineering in Ontario — OBC permit filings, PEO General Review, shoring and temporary works, forensic investigations, expert witness services, Ontario Construction Act, and ODACC adjudication.
Getting Started
Engaging a P.Eng., PEO licensing, what to expect, and how we work across Ontario and the GTA.
- PEO licensing and seal expectations
- Project scope, fees, and first-step planning
OBC Permits & Filings
Ontario Building Code permit filings, Part 9 vs. Part 3, ePLAN coordination, and how Asvakas manages review flow.
- Permit path, filing strategy, and city review coordination
- Toronto ePLAN handling through our permit team
PEO General Review & CA
Field review stages, shop drawing review, Schedule 2 Division C final certificate, and occupancy permit.
- Construction administration and site observation stages
- Shop drawings, closeout certificates, and occupancy
Foundations & Site Work
Underpinning (basement lowering), shoring under OHSA, excavation monitoring, and geotechnical reports.
- Underpinning sequence and neighbour protection
- Excavation support, monitoring, and soils coordination
Temporary Works Ontario
Formwork (OHSA s.83), erection plans, cofferdam permits, demolition plans, and temporary bracing.
- Formwork, staging, and engineered temporary conditions
- Erection, demolition, and bracing risk planning
Ontario Construction Act
Prompt payment, construction liens, ODACC adjudication, statutory holdback, and engineer payment rights.
- Payment timing, holdback, and lien exposure
- Adjudication workflow and dispute documentation
Forensic Engineering
Structural investigations, insurance claims, construction defects, Tarion warranty, and Rule 53.03 expert evidence.
- Failure analysis, damage documentation, and claims support
- Tarion, defect review, and expert evidence workflows
Specialty Engineering
Roof safety anchors (CSA Z259), post-installed anchors (CSA A23.3 Annex D), seismic retrofit, and cladding.
- Anchors, specialty attachments, and retrofit detailing
- Cladding, safety systems, and seismic upgrades
Getting Started in Ontario
What does a structural engineer do in Ontario?
How P.Eng.s design structures, seal permit drawings, perform General Review, and provide forensic services.
PEO licensing and P.Eng. requirements in Ontario
Professional Engineers Act, PEO registration, EIT designation, and why only licensed P.Eng.s can seal drawings.
Structural engineering costs in Ontario
Fee ranges for residential assessments, OBC-filed drawings, full structural design, General Review, and forensic services.
How to engage Asvakas Engineering in Ontario
Describe your project and timeline — we provide fee proposals within 1–2 business days.
Structural Engineering Services in Ontario — Overview
Complete guide to structural engineering services for Ontario residential, commercial, and institutional projects.
OBC Permits & Filings
Ontario Building Code compliance guide
OBC Regulation 332/12 structure, key structural provisions, Part 3 vs. Part 9, and how the OBC relates to NBCC 2020.
Ontario building permit coordination process
How Asvakas prepares the application, assembles the required documents, and coordinates Toronto ePLAN or municipal permit review.
OBC permit types — building, demolition, change of use
When each permit type applies, what structural drawings are required, and conditional permit provisions.
What is the difference between OBC and NBCC?
How the Ontario Building Code relates to the National Building Code — what differs and which governs.
Toronto building permit coordination with Asvakas
Toronto Building's ePLAN system, common objections, and how Asvakas manages filing and reviewer responses for a smoother process.
Toronto ePLAN filing support
Guide to how Asvakas handles structural drawing submission through Toronto Building's ePLAN system.
PEO General Review & Construction Administration
PEO General Review (Structural Field Review) guide
OBC obligations, required visit stages, documentation, and the Schedule 2 Division C final certificate.
Shop drawing review — what engineers check and what it means
Why shop drawings are reviewed, what the review stamp means, and the engineer's liability limits.
Construction administration services in Ontario
Site instructions, change orders, RFI responses, and the engineer's role in construction quality oversight.
P.Eng. Schedule 2 Division C Final Certificate — what it says
What the General Review Final Certificate certifies (and what it does not certify) and how the building official uses it.
Occupancy Permit process in Ontario
What the building official requires before issuing an Occupancy Permit and how the structural engineer's certificate fits in.
Foundations & Site Work Ontario
Ontario shoring and excavation support guide
OHSA 213/91 s.228, when P.Eng. sealed shoring is required, common systems, and neighbour protection obligations.
Basement underpinning (lowering) in Ontario
How the P.Eng. designs the underpinning sequence, what the building permit requires, and neighbour notifications.
Complete underpinning guide for Ontario residential buildings
Mass concrete vs. reinforced underpinning, construction sequencing, settlement monitoring, and OBC filing.
Ontario façade inspection requirements
Toronto Chapter 629, balcony guard inspection requirements, proactive condition assessments, and property standards orders.
Foundation cracks in Ontario homes — which types are serious?
Visual guide to crack types, which require immediate structural assessment, and what to expect from a structural engineer's evaluation.
Temporary Works — Ontario
Formwork engineering in Ontario — OHSA & CSA S269
OHSA s.83 P.Eng. stamp triggers, fresh concrete pressure calculations, pre-pour inspection, and failure causes.
Steel and precast erection plans under OHSA 213/91
When erection plans are required, what they contain, temporary bracing design, and crane pick procedures.
Cofferdam engineering and in-water permits in Ontario
OHSA Part XI requirements, Conservation Authority and DFO permits, cofferdam types, and dewatering risks.
Shoring systems for Ontario excavations
Soldier pile and lagging, secant piles, sheet piles, soil nail walls, and tieback systems — design and OHSA compliance.
Temporary works engineering overview — Ontario
Comprehensive guide to all temporary works categories required on Ontario construction projects.
Ontario Construction Act & Payment
Ontario Construction Act 2018 — complete guide
Prompt payment, construction liens, ODACC adjudication, holdback, and engineer payment rights.
How prompt payment works under the Construction Act
How prompt payment works, what qualifies as a proper invoice, and when notice of non-payment obligations arise.
How structural engineers preserve and perfect construction liens
How engineers preserve and perfect construction liens, the registration process, and why legal deadlines must be confirmed right away when payment issues arise.
ODACC adjudication — how it works and what it covers
Notice of Adjudication, adjudicator appointment, binding interim status, and the scope of ODACC jurisdiction.
Construction closeout and holdback release in Ontario
Substantial performance process, holdback calculation and release conditions, deficiency resolution, and final certificate.
Forensic Engineering Ontario
Forensic structural investigation guide — Ontario
Investigation methodology, documentation, material testing, root cause analysis, and report preparation for Ontario litigation.
Structural failure analysis in Ontario
Common failure modes in Ontario building types, investigation approach, and remediation recommendations.
Structural damage insurance claims in Ontario
IBC standard policy, sudden vs. gradual deterioration exclusion, insurer's engineer, and P.Eng. assessment role.
Construction defect claims in Ontario — Tarion, ODACC & Rule 53.03
Tarion warranty coverage, Construction Act defect adjudication, limitation periods, and Rule 53.03 expert evidence requirements.
Expert witness structural engineering in Ontario courts
Rule 53.03, Form 53A acknowledgment, White Burgess impartiality standard, and how Ontario expert engineers work in litigation.
Specialty Engineering Ontario
Roof safety anchor engineering — OHSA & CSA Z259
P.Eng. anchor certification requirements, CSA Z259 load standards, anchor types, annual inspection, and compliance documentation.
Post-installed anchor design — CSA A23.3 Annex D guide
Six failure modes, expansion vs. adhesive anchors, pull-out testing (ASTM E488), seismic anchor design, and installation verification.
Structural peer review in Ontario — PEO guidelines
When peer review is required, Toronto Building 8-storey threshold, two-round process, and reviewer qualifications.
Seismic design and retrofit in Ontario
NBCC 2020 seismic provisions for Ontario, unreinforced masonry risk, retrofit methods, and post-disaster building requirements.
Specialty structural engineering services in Ontario
All specialty engineering categories — anchors, fall protection, formwork, monitoring, and cladding systems.
Visit our full Ontario FAQ → | Browse all Ontario articles →