Parsways Structural Engineering Blog

A detached garage may look like a simple accessory building, but its structural design depends on site conditions, loads, framing layout, and foundation performance. In British Columbia, snow, wind, seismic demand, soil conditions, and municipal requirements can affect the final design. For projects in Surrey, Burnaby, Kelowna, Victoria, and other BC communities, detached garage structural design should coordinate the foundation, slab, walls, roof, and connections as one syst

A second-storey addition can add living space without increasing a home’s footprint, but it also changes how loads move through the building. The new floor, walls, roof, and finishes add gravity loads, while the increased height can affect wind and seismic resistance. For homes in Vancouver, Surrey, Burnaby, and Victoria, second-storey addition structural engineering starts with the existing house. The main question is whether the structure below can support the added level.

Adding floor area to an existing home changes more than the building footprint. A home addition can introduce new gravity, wind, snow, and seismic loads that must transfer safely through the structure and into the foundation. Across British Columbia, from Surrey and Burnaby to Victoria and Kelowna, structural engineering for a home addition focuses on how new construction connects to the existing house and whether both systems can perform together. by Cronin Engineering and I

Structural field reviews in BC are part of the professional assurance process where a registered professional is responsible for design and field review. They help determine whether construction substantially complies, in all material respects, with the engineering documents and applicable code requirements. For most of British Columbia, the current framework is the BC Building Code 2024 (BCBC 2024). The City of Vancouver uses the Vancouver Building By-law 2025 (VBBL 2025). b

Letters of Assurance are central to professional responsibility under the BC Building Code. For contractors and designers, understanding when Schedule B is required helps avoid permit delays, unclear scope, and construction beginning before the required assurances are in place. For most of British Columbia, the current framework is the BC Building Code 2024 (BCBC 2024). Projects in the City of Vancouver follow the Vancouver Building By-law 2025 (VBBL 2025), which includes add

Understanding BC Building Code Part 9 vs Part 4 is important before structural drawings are prepared or a permit is submitted. A project may qualify as a Part 9 building and still contain structural components that require Part 4 engineering. BC Building Code 2024 official BC Building Code 2024 page applies to most of British Columbia, including Surrey, Burnaby, Victoria, and Kelowna. The City of Vancouver uses the Vancouver Building By-law 2025, which includes additional pro

Not every rooftop solar installation in British Columbia requires a structural engineer. The requirement depends on the building, roof framing, mounting system, proposed loads, and the permit rules of the local authority. For existing homes and commercial buildings, the central question is whether the roof and its connections can safely support the system while resisting snow, wind uplift, and other applicable structural effects. by Prospect Solar Structural Engineer Requirem

Installing rooftop HVAC equipment changes how loads enter and move through a building. The unit may appear compact, but its weight, support points, vibration, wind exposure, and earthquake forces can affect roof joists, trusses, beams, diaphragms, walls, and connections. For projects in Vancouver, Victoria, Surrey, Kelowna, and other British Columbia communities, structural review should begin before equipment is ordered or roof openings are finalized. Early coordination redu

Retaining walls are used across British Columbia to support grade changes, stabilize sloped sites, and create usable space beside buildings, driveways, roads, and landscaped areas. Their design must address more than wall strength because soil, groundwater, nearby loads, and construction sequence all affect performance. For projects in Vancouver, Burnaby, Nanaimo, Kelowna, and other BC communities, retaining wall requirements depend on the governing building code, municipal b

Warehouse mezzanines provide additional usable floor space without expanding a building's footprint. They are commonly used for storage, production areas, office space, and equipment platforms. In British Columbia, every mezzanine should be structurally designed to safely support its intended loads while complying with the BC Building Code and applicable CSA structural design standards. For contractors, designers, inspectors, and engineers, understanding the structural requir

Building permit drawings in BC are reviewed for code compliance, clarity, and constructability. For renovation projects in Vancouver, Burnaby, Richmond, Surrey, Victoria, Kelowna, and Nanaimo, structural comments often arise when the drawings do not show how existing and proposed loads are supported. The BC Building Code 2024 applies to permit applications made after March 8, 2024, while Vancouver uses its own Building By-law. Earthquake design provisions apply to application

Removing a load-bearing wall in a BC renovation is not only an interior layout change. It changes how floor, roof, and sometimes lateral loads move through the building. For contractors, designers, inspectors, and owners in Vancouver, Burnaby, Surrey, Victoria, Kelowna, and Nanaimo, the key issue is how the removed support will be replaced, transferred, and documented. by Renew Co Load-Bearing Wall Removal as a Structural Change in BC The BC Building Code regulates building a

Basement suite conversions in BC can look like interior renovation work, but they often become structural projects when walls are altered, floors are lowered, or new openings are added. In Vancouver, Burnaby, Surrey, Richmond, Kelowna, and Victoria, permit review focuses on whether the suite can be built without compromising the existing house. The BC Building Code 2024 applies to most building permit applications in British Columbia after March 8, 2024. Structural review sho

Laneway houses are often treated as simple residential projects because of their size. In practice, they still require coordinated structural design under the BC Building Code, especially when the layout includes compact footprints, large openings, tall walls, or site-specific foundation conditions. For architects and designers working in Vancouver, Burnaby, Surrey, Richmond, Coquitlam, or Victoria, the structural package should be part of the permit strategy. A complete stru

Adding an upper level to an existing residential property requires a complete re-engineering of the building’s load-bearing system. In high-density urban areas across Ontario, from Toronto to Mississauga, vertical expansion is a popular alternative to moving. However, executing a second storey addition structural design Ontario requires meticulous planning to ensure the home can handle the extra weight. Many general contractors and designers focus heavily on spatial layout, b

Industrial facilities across Ontario frequently undergo operational changes as commercial business demands evolve. Repurposing an existing warehouse space for heavier storage is highly common in major manufacturing and logistics hubs such as Mississauga and Brampton. However, introducing new storage loads without verifying structural capacity poses significant safety risks, especially when the initial design criteria of the building are completely unknown. When modifying exis

Starting construction before structural drawings are finalized may appear efficient when schedules are tight. In Ontario, however, early work can create technical, permit, inspection, and liability issues that are difficult to correct later. Structural drawings define the load path, member sizes, connection requirements, foundation design, lateral stability, and limitations needed for code-compliant work under the Ontario Building Code (OBC). Final Structural Drawings and Per

Remote review is useful for screening, document checks, and coordination. However, some structural reviews cannot be completed remotely because the engineer must verify conditions that are not visible in drawings, photos, or videos. In Ontario projects, including Toronto, Newmarket, Vaughan, Markham, Barrie, Hamilton, and smaller towns, structural review must be based on reliable information. Where information is incomplete, an on-site structural review may be required before

Building permit delays in Ontario usually begin before municipal review starts. A package may look complete, but if the drawings do not clearly show the structural scope, load path, existing conditions, or code basis, the reviewer will issue comments instead of approval. The current Ontario Building Code adopts the National Building Code of Canada 2020 with Ontario amendments. Structural submissions must coordinate with applicable Part 4 or Part 9 requirements and relevant CS

Not every construction or renovation project in Ontario requires a structural engineer. However, when structural elements are modified, loads are changed, or building permit documentation is involved, engineering review is often required to confirm safety and compliance. Understanding when structural engineering is needed can help avoid permit delays, construction issues, and unnecessary rework—especially in active markets such as the GTA, where permit review timelines can al