Ontario Commercial Plan Review: 425 Issues Found

Summary: 65 index entries | 64 perfect matches | 0 mismatched | 1 missing Missing (1) — listed in drawing index but not found in the document: Architectural: - A0.000 COVER PAGE

Why it matters:

Suggested next step:

RFI draft: 📄 A0.001 Schedule Text: DRAWING INDEX — page 2

Summary: Floor plan A1.200 establishes vertical grid lines (A through M) running along the top/bottom faces of the building, and horizontal grid lines (1 through 6) running along the right/left faces. Callout tags on the floor plan correctly point to their corresponding building elevations on sheet A4.300 (e.g., the West face calls out Detail 01, the...

Why it matters: This severe misalignment between floor plan orientations, callouts, grid lines, and elevation titles will cause critical errors during construction. Contractors may install exterior features, fenestrations, and wall assemblies on the wrong building facades if they rely on the elevation titles instead of the grid lines.

Suggested next step: Please review and revise the elevation titles on sheet A4.300 to match the correct compass directions and grid layouts established on floor plan A1.200 (e.g., Detail 01 should be West Elevation, Detail 02 should be North Elevation, and Detail 03 should be East Elevation).

RFI draft: Please review and revise the elevation titles on sheet A4.300 to match the correct compass directions and grid layouts established on floor plan A1.200 (e.g., Detail 01 should be West Elevation, Detail 02 should be North Elevation, and Detail 03 should be East Elevation).

Summary: Sheet A1.500 shows continuous exterior walls along Grid 1 and Grid A, with callouts for the corner sunshade (08/A6.404). However, the details on A6.404 provide conflicting offset dimensions from these structural grids to the exterior wall face. For Grid 1, multiple section details (Detail 04 and Detail 10) specify a 440mm offset, while Plan...

Why it matters: Conflicting grid offsets indicate a severe coordination issue between the architectural building envelope and the structural framing grids. If the wall is continuous and straight as depicted on the plan, the offset from the grid line must remain consistent. Varying offsets (440mm vs 500mm from Grid 1, and 250mm vs 500mm from Grid A) will lead...

Suggested next step: Please confirm the correct exterior wall face offsets from Grid 1 and Grid A. Should the offset from Grid 1 be 440mm (as shown in Sections 04 and 10) or 500mm (as shown in Plan Detail 08)? Should the offset from Grid A be 250mm (Detail 08) or 500mm (Detail 07)?

RFI draft: Please confirm the correct exterior wall face offsets from Grid 1 and Grid A. Should the offset from Grid 1 be 440mm (as shown in Sections 04 and 10) or 500mm (as shown in Plan Detail 08)? Should the offset from Grid A be 250mm (Detail 08) or 500mm (Detail 07)?

Summary: There is a fundamental phasing conflict in the Fire Alarm Riser topology between Phase 1 and Phase 2. The Phase 1 Riser Diagram shows the 'TEMPORARY SECURITY SYSTEM CONTROL PANEL', 'TEMPORARY VOICE MDF BACKBOARD', 'BAS PANEL' (N-28), and the '3 DCLA CIRCUIT' connecting directly to the new 'FIRE ALARM SYSTEM CONTROL PANEL C/W LED ANNUNCIATOR...

Why it matters: Because Phase 2 shows these systems connected to the panel scheduled for removal, it implies they will be disconnected during Phase 2. While Phase 2 provides new permanent Security and Voice panels connected to the newly provided Phase 2 Fire Alarm panel, it completely omits any connection for the BAS Panel (N-28) to the new Fire Alarm panel....

Suggested next step: Please clarify the Fire Alarm Riser topology between Phase 1 and Phase 2. Should the Temporary Security, Temporary Voice, BAS Panel, and DCLA circuits connect to the new Phase 1 panel or an existing panel? Additionally, please provide the connection detail routing the BAS Panel (N-28) to the newly provided Fire Alarm Control Panel in Phase 2,...

RFI draft: Please clarify the Fire Alarm Riser topology between Phase 1 and Phase 2. Should the Temporary Security, Temporary Voice, BAS Panel, and DCLA circuits connect to the new Phase 1 panel or an existing panel? Additionally, please provide the connection detail routing the BAS Panel (N-28) to the...

Summary: Detail 10/S-700 shows a 300mm thick continuous footing supporting a retaining wall for the Loading Dock Ramp. The wall's inside face vertical reinforcement is '20M@250V I.F.', and the drawing notes 'DOWELS TO MATCH WALL VERTICALS, TYP.'. According to the 'DEVELOPMENT OF STANDARD HOOKS IN TENSION' schedule on S-101, a 20M bar in 30 MPa concrete...

Why it matters: Failure to properly develop the tension dowels at the base of the retaining wall compromises the moment connection between the wall and the footing, creating a high risk of structural failure under lateral soil loads. The footing thickness must be increased to accommodate the full hook development length and the required bottom cover (minimum...

Suggested next step: Please clarify the required footing thickness for the Loading Dock Ramp retaining walls in Detail 10/S-700. The currently detailed 300mm thickness is insufficient to accommodate the 370mm standard hook development length required for the 20M dowels, plus the 75mm bottom concrete cover. Should the footing thickness be increased to a minimum of...

RFI draft: Please clarify the required footing thickness for the Loading Dock Ramp retaining walls in Detail 10/S-700. The currently detailed 300mm thickness is insufficient to accommodate the 370mm standard hook development length required for the 20M dowels, plus the 75mm bottom concrete cover. Should...

Summary: The drawing indicates an 'EYE WASH STATION' supplied only by a '10 mmø DHW-' (Domestic Hot Water) line. Standard safety practice requires emergency eye wash stations to be provided with tepid water.

Why it matters: Providing only hot water to an eye wash station creates a severe scalding hazard and violates safety codes (such as ANSI Z358.1). A cold water connection and a thermostatic mixing valve, or a dedicated tepid water line, are required to safely flush eyes during an emergency.

Suggested next step: Please clarify the piping to the Eye Wash Station. Should a Domestic Cold Water (DCW) line and mixing valve be added to provide the required tepid water?

RFI draft: Please clarify the piping to the Eye Wash Station. Should a Domestic Cold Water (DCW) line and mixing valve be added to provide the required tepid water?

Summary: The drawing shows a storm drainage pipe ('150 mmø ST') and a cleanout ('CO') routed within 'ELECTRICAL ROOM 038'. Standard electrical codes strictly prohibit the routing of foreign wet systems through dedicated electrical spaces.

Why it matters: Placing water-bearing pipes and cleanouts in an electrical room introduces a high risk of catastrophic water damage to electrical equipment and violates code-required dedicated equipment space parameters.

Suggested next step: Please reroute the 150 mmø storm drainage piping and cleanout outside of Electrical Room 038 to comply with standard electrical code requirements for dedicated space.

RFI draft: Please reroute the 150 mmø storm drainage piping and cleanout outside of Electrical Room 038 to comply with standard electrical code requirements for dedicated space.

Summary: Architectural plans locate personnel door D047A on the North wall and D047C on the South wall within the central bay between grid lines S and T. However, Structural elevations specify a full-bay diagonal 'TENSION / COMPRESSION BRACE' occupying this exact bay on both the North and South walls. Additionally, Architectural Section 07 explicitly...

Why it matters: A full-height structural diagonal brace crossing a door opening physically obstructs passage, rendering the door unusable and creating a major constructability issue. Resolving this requires either relocating the architectural doors to an unbraced bay or modifying the structural lateral system (e.g., using a portal frame or chevron bracing) to...

Suggested next step: Please review the clash between personnel doors D047A/D047C and the structural lateral bracing between grids S and T. Clarify whether the doors should be relocated to adjacent bays, or if the structural moment frames/bracing should be redesigned to provide an unobstructed opening.

RFI draft: Please review the clash between personnel doors D047A/D047C and the structural lateral bracing between grids S and T. Clarify whether the doors should be relocated to adjacent bays, or if the structural moment frames/bracing should be redesigned to provide an unobstructed opening.

Summary: The Civil Plan (OC-FP-2) establishes a groundwater level of 'GWL 194.28', while the Civil Sections (OC-FP-3) note lower groundwater elevations such as 'GROUNDWATER ±193.25*'. In direct conflict with the highest stated groundwater level, the Structural Plan (S-200) specifies Bottom of Footing elevations at 'B.O.F. 193.00' and 'B.O.F. 193.50' for...

Why it matters: If the higher groundwater elevation of 194.28 is correct, excavating and casting footings at 193.00 will require extensive dewatering during construction. Furthermore, the completed loading dock pit and foundations would be permanently submerged, requiring robust waterproofing and hydrostatic pressure design not currently detailed in the...

Suggested next step: Please verify the correct design groundwater elevation (194.28 vs 193.25). If the higher GWL is correct, please provide required dewatering, waterproofing, and hydrostatic pressure design details for the foundations and loading dock pit with B.O.F. elevations at 193.00 and 193.50.

RFI draft: Please verify the correct design groundwater elevation (194.28 vs 193.25). If the higher GWL is correct, please provide required dewatering, waterproofing, and hydrostatic pressure design details for the foundations and loading dock pit with B.O.F. elevations at 193.00 and 193.50.

Summary: The mechanical schedule specifies six electric unit heaters (UH-CS-01 through UH-CS-06) for the Cold Storage area, each rated at 25.0 kW (208/3/60), resulting in a total heating load of 150 kW. However, the electrical single-line diagram indicates that the dedicated Cold Storage panel (PP-CS1) is fed by a 45 kVA transformer (TR-CS1) and uses a...

Why it matters: If constructed as designed, the 150 kW heating load will immediately overload the 45 kVA transformer and trip the primary 60A breaker or secondary 225A main breaker. Correcting this will require significant upsizing of the transformer (TR-CS1), panelboard (PP-CS1), and the associated primary and secondary feeders.

Suggested next step: Please coordinate the heating requirements for the Cold Storage area. Either reduce the mechanical heating load to align with the 45 kVA electrical provision, or upsize transformer TR-CS1, panel PP-CS1, and their respective feeders/breakers to accommodate the 150 kW load.

RFI draft: Please coordinate the heating requirements for the Cold Storage area. Either reduce the mechanical heating load to align with the 45 kVA electrical provision, or upsize transformer TR-CS1, panel PP-CS1, and their respective feeders/breakers to accommodate the 150 kW load.

Summary: The Site Plan (M0-040) designates an outdoor 'TRANSFORMER' located on the exterior east side of the Operations Centre, directly adjacent to the '10 OUTDOOR BICYCLE PARKING'. Conversely, the Electrical Site Plan (E-8.1) does not show an outdoor transformer in this location; instead, it shows a standby generator ('GEN-BB') on an 'MEP PAD'....

Why it matters: Discrepancies in the location and type of major outdoor electrical equipment affect concrete pad sizing, structural design, underground duct bank routing, and spatial coordination (such as placing bicycle parking directly next to a noisy generator). Unresolved conflicts here will delay the pouring of exterior pads and the primary electrical...

Suggested next step: Please confirm the location and configuration of the main electrical service transformer and the standby generator. Should the transformer be located outdoors as shown on M0-040, or indoors with an outdoor generator as implied by E-8.1? Please update the site and electrical plans to be consistent, and review the proximity to the bicycle parking.

RFI draft: Please confirm the location and configuration of the main electrical service transformer and the standby generator. Should the transformer be located outdoors as shown on M0-040, or indoors with an outdoor generator as implied by E-8.1? Please update the site and electrical plans to be...

Summary: Mechanical drawing M3-101 indicates that the eastern portion of the building is 'PHASE 2 - WORKS NOT IN CONTRACT' and explicitly instructs to 'CAP ALL SANITARY PIPING WITHIN PHASE ONE' because the Phase 2 underground sanitary plumbing will be installed later. However, Structural drawing S-200 does not indicate any project phasing and details a...

Why it matters: If the structural slab-on-grade is poured across the entire building footprint during Phase 1 (as detailed on S-200), it will cover the Phase 2 area before the deferred Phase 2 underground sanitary plumbing is installed. This will require extensive and costly demolition, saw-cutting, and trenching of the newly poured structural slab to install...

Suggested next step: Please confirm if the structural slab-on-grade in the Phase 2 area should be deferred until Phase 2 underground plumbing is installed. If the slab must be poured in its entirety during Phase 1, should the Phase 2 underground plumbing be added to the Phase 1 contract scope to avoid future slab demolition and trenching?

RFI draft: Please confirm if the structural slab-on-grade in the Phase 2 area should be deferred until Phase 2 underground plumbing is installed. If the slab must be poured in its entirety during Phase 1, should the Phase 2 underground plumbing be added to the Phase 1 contract scope to avoid future slab...

Summary: The electrical plan specifies an approximate ceiling height of 5664.2mm (18'-7') AFF. However, the architectural building sections indicate the underside of the steel roof structure is at 5300mm AFF at the eaves. With a building width of 13160mm and a 'MIN. 2% SLOPE' for the roof, the peak height of the roof structure at the center ridge is...

Why it matters: If a suspended ceiling or associated upper infrastructure is planned for an elevation of 5664.2mm, the installation will be impossible as it conflicts directly with the physical roof deck and structural steel, which are lower. While the electrical light fixture tags note a mounting height (MH) of 4572mm (which safely fits below the roof), the...

Suggested next step: Please clarify the intended ceiling height for the Cold Storage area. The currently specified electrical ceiling height of 18'-7' (5664.2mm) AFF exceeds the underside of the roof steel shown on the architectural sections (5300mm AFF at eaves). Should the 'APPROXIMATE CEILING HEIGHT' note be removed or revised to match the underside of the roof...

RFI draft: Please clarify the intended ceiling height for the Cold Storage area. The currently specified electrical ceiling height of 18'-7' (5664.2mm) AFF exceeds the underside of the roof steel shown on the architectural sections (5300mm AFF at eaves). Should the 'APPROXIMATE CEILING HEIGHT' note be...

Summary: Civil ESC Stage 2 details a 'PROP DRY POND' in the southeast corner of the site, immediately east of the parking lot. In this exact same spatial footprint, the Architectural Phase 2 plan shows a 'PEDESTRIAN WALKWAY' and swept paths for heavy vehicles ('Hydro One 34' 'AC' BUS 12m truck').

Why it matters: A stormwater dry pond cannot physically coexist with a paved pedestrian walkway and heavy vehicle turning/circulation areas in the same location. This severe spatial clash will halt grading, paving, and stormwater management operations in this quadrant if not resolved.

Suggested next step: Please resolve the spatial conflict in the southeast corner immediately east of the parking lot. Does the pedestrian walkway and bus swept path supersede the SWM dry pond layout, or does the SWM pond design need to be reconfigured/relocated to accommodate the architectural site circulation?

RFI draft: Please resolve the spatial conflict in the southeast corner immediately east of the parking lot. Does the pedestrian walkway and bus swept path supersede the SWM dry pond layout, or does the SWM pond design need to be reconfigured/relocated to accommodate the architectural site circulation?

Summary: Civil drawings OC-SG-1 and OC-SS-1 indicate a 'PROP DRY POND' with a 100yr HWL of 194.00 in the southeast corner of the site near Fisher Drive. However, the Architectural site plan (A0.105) designates this exact area as 'LANDSCAPE 878 m²' and does not show any stormwater detention pond in this location.

Why it matters: A dry pond requires specific grading, berms, an impermeable liner, and outlet control structures which significantly impact the site layout, landscaping, and usable area. This conflict must be resolved to ensure the stormwater management strategy is properly integrated into the architectural site design and landscape plans.

Suggested next step: Please confirm whether the proposed dry pond is required in the southeast corner as shown on the Civil drawings, or if this area should remain landscaped as shown on the Architectural drawings. If the pond is required, please update the Architectural and Landscape drawings to reflect its presence and coordinate any displaced landscaping.

RFI draft: Please confirm whether the proposed dry pond is required in the southeast corner as shown on the Civil drawings, or if this area should remain landscaped as shown on the Architectural drawings. If the pond is required, please update the Architectural and Landscape drawings to reflect its...