Parkade & Parking-Structure Concrete Forming

Parkade concrete forming, built to the drawings

A parking structure is one of the most demanding pours on a multi-family or commercial site. It is almost entirely structural concrete — suspended decks carrying live load above occupied space, columns and shear walls transferring that load to the foundation, ramps tying levels together, and grade slabs at the base. Everything is cast in place, everything is on the critical path, and everything has to come out to the dimensions and reinforcement the structural engineer specified.

That is the work Twin Peaks is built for. Three generations of concrete and structural experience, here on the North Shore since 2008, focused on getting the formwork right the first time so the deck above it lands where the drawings say it should. We form to the engineer's package — not to a standard detail — and we build the temporary structure that makes a safe pour possible. For the broader range of cast-in-place work we take on, see our architectural and structural concrete page.

The scope we form

On a parkade we handle the concrete and the structure around it, end to end within our scope:

• Suspended slabs. Elevated decks over underground and above-grade levels — formed, shored, reinforced, placed and finished to the specified thickness, camber and slab-to-slab height.
• Columns. Cast-in-place columns formed to the engineer's sizes and reinforcement, plumb and on grid, carrying the deck loads down through the structure.
• Shear walls and core walls. The lateral system — formed straight, plumb and true, with openings and embeds placed where the drawings call for them.
• Ramps and grade slabs. Inter-level ramps formed to the design slope and transitions, plus the grade-level slab at the base of the structure.
• Grade beams, footings and foundations. The substructure the whole parkade sits on. See our note on poured concrete foundations.

Blockouts, pour strips, construction joints and embed plates are formed and set as detailed, so the trades following us have what they need.

Formwork, shoring and reshoring

On a parking structure the formwork and shoring are not an afterthought — they are a temporary structure in their own right, holding wet concrete and its load until the slab can carry itself. We engineer that temporary structure to the load and the schedule.

• Formwork. Wall, column and deck forms laid out to the dimensions, tolerances and finish the drawings require, with tie patterns and bracing sized for the pour.
• Shoring. Shoring laid out so a freshly placed suspended slab is fully supported until it reaches the strength the engineer specifies for stripping.
• Reshoring. Reshoring between levels so load from upper pours is carried back down through slabs that have not yet reached full design strength — a sequence that protects the structure and keeps the deck cycle moving.

We plan the strip-and-reshore cycle around the concrete strength gains and the project schedule, not the other way around, and we coordinate hold points with the engineer of record.

Rebar coordination, placing and finishing

The reinforcement is what makes a slab or wall structural, so the forming and the steel have to agree before anyone calls for concrete. We coordinate rebar placement — bar size, spacing, laps, cover and the congested zones over columns and at wall intersections — against the structural drawings and the reinforcing shop drawings, and we flag conflicts between steel, embeds and blockouts early, while they are still cheap to fix.

When the forms and steel are inspected and released, we place and finish the concrete: controlled placement and consolidation to avoid honeycombing in heavily reinforced sections, the specified slab finish and fall where drainage matters, and proper curing. Where an existing structure needs work rather than new forming, our structural concrete repair scope covers that.

Underground and above-grade parkades

Most parkades in Metro Vancouver are underground, above-grade, or both, and the forming realities differ.

• Underground. Below-grade levels mean deep excavation, tight access, and perimeter walls formed against shoring in a confined footprint. Sequencing the deck pours so crews, pumps and material can still move is as much of the job as the concrete itself.
• Above-grade. Above-grade decks stack quickly, which puts the pressure on the strip-and-reshore cycle and on keeping columns plumb and on grid level after level.

Either way the discipline is the same: build the temporary structure correctly, hold tolerance, and keep the deck cycle predictable so the levels above us can start when the schedule says they will. This work often sits inside larger multi-family structural projects, and the same forming discipline carries over to the site's structural retaining walls.

Working with developers, GCs and engineers

We work the way the people who award and specify this work need us to. For developers and general contractors that means a formwork and pour sequence that respects the master schedule, a crew that holds tolerance and keeps the deck cycle moving, and a safe site around a demanding pour. For the structural engineer it means building to the drawings as issued, surfacing conflicts before the pour rather than after, and respecting inspection and strength hold points.

Our scope is the concrete and the structure — forming, shoring and reshoring, rebar placement coordination, and placing and finishing cast-in-place concrete. Where a parkade calls for a traffic-coating or waterproofing membrane over the deck, that is coordinated with the appropriate trade; we deliver the structural slab it goes on. To start a conversation about a project on the North Shore or across the Lower Mainland, call (778) 882-8001 or see where we work in North Vancouver.

Frequently asked questions

What parts of a parkade does Twin Peaks form?

The cast-in-place structure: suspended slabs, columns, shear and core walls, ramps, grade-level slabs, and the grade beams, footings and foundations beneath them. We build the formwork, engineer the shoring and reshoring, coordinate the rebar placement, and place and finish the concrete to the structural engineer's drawings, on both underground and above-grade parkades.

Do you handle shoring and reshoring, or just the forms?

Both. We treat the formwork and shoring as a temporary structure engineered to the load and schedule. Shoring supports a freshly placed suspended slab until it reaches the strength specified for stripping, and reshoring carries load from upper pours back down through slabs that have not yet reached full design strength. We plan the strip-and-reshore cycle around concrete strength gains and the project schedule, and coordinate hold points with the engineer of record.

Do you install the parkade waterproofing or traffic membrane?

No. Our scope is the concrete and structure — forming, shoring, rebar placement coordination, and placing and finishing the cast-in-place slab. Where a deck needs a traffic coating or waterproofing membrane, that work is coordinated with the appropriate trade. We deliver the sound, correctly finished structural slab that the membrane system is applied over.

How do you make sure the work matches the structural drawings?

We form to the engineer's issued package rather than a generic detail, lay out formwork to the specified dimensions and tolerances, and coordinate rebar — size, spacing, laps and cover — against the structural and reinforcing shop drawings before any pour. We flag conflicts between steel, embeds and blockouts early, and we respect inspection and strength hold points so the engineer can release each pour with confidence.

What areas and project types do you serve?

Twin Peaks is based in North Vancouver and forms commercial and structural concrete across the North Shore — North and West Vancouver — and the wider Metro Vancouver and Lower Mainland region. The parkade and parking-structure forming described here is for developers, general contractors and structural engineers on multi-family and commercial projects.