Heated Ramps and Snowmelt Systems Whitby

Step 1, Review heat-load design, structural slab, drainage, power or mechanical supply, zones, sensors, controls, joints, access, and commissioning.

Step 2, Prepare substrate, insulation, reinforcement, manifolds or electrical feeds, sleeves, sensors, and protected terminations.

Step 3, Lay and secure tubing or cable to spacing and cover without crossing prohibited joints or interfering with reinforcement.

Step 4, Pressure, resistance, insulation, or continuity test before, during, and after concrete placement while maintaining records.

Step 5, Cure and protect concrete, complete controls and plant connections, commission zones and alarms, and hand over operating settings.

A reliable snowmelt ramp is built from the subgrade upward with the heating network protected and documented before concrete placement. Harrowgate sequences excavation, drainage, insulation, reinforcement, loop or cable placement, pressure and electrical checks, concrete, controls, and commissioning as one coordinated installation.

Heat-load and system coordination. The engineer establishes design output, surface temperature objective, zoning, fluid temperatures or electrical loading, and control sequence. We review geometry, wind exposure, shaded areas, traffic, slab thickness, drainage, and unheated transitions. Hydronic and electric options are compared against plant capacity, operating control, service access, and pavement area.

Removal, excavation, and drainage. Existing pavement and failed base are removed to the design limits. Utilities are located, subgrade is proofed, and unsuitable material is replaced. Drain bodies, trench drains, catch basins, and outlets are set before the heated slab. The finished grading directs meltwater away from garage thresholds and prevents a refreeze band below the ramp.

Insulation and reinforcement. High-compressive-strength insulation is installed where the design uses it to reduce downward heat loss. Boards are fitted tightly and protected from displacement. Reinforcement, chairs, dowels, and edge thickening follow the structural design. Heating components are attached without compromising bar cover, joint locations, or required depth below the wearing surface.

Hydronic tubing or cable layout. Cross-linked polyethylene tubing is placed in balanced circuits from accessible manifolds, with bend radius and spacing held to the drawings. Electric cable or mats are laid without crossing or damage and connected to cold leads in approved locations. Photos and measurements document every loop before it is concealed.

Testing during concrete placement. Hydronic circuits are pressure-tested before and during the pour so damage is detected immediately. Electric cable resistance and insulation readings are recorded before, during, and after placement. Crews use protected access paths, suitable placing equipment, and careful vibration so boots, rakes, pumps, and reinforcement do not displace or cut the system.

Concrete, joints, and commissioning. Exterior concrete is placed, finished for traction, and cured under CSA A23.1 requirements. Sawcuts are coordinated with loop and cable drawings. The system remains off during early cure unless the engineer's procedure states otherwise. Sensors, pumps, valves, heat exchanger, panel, and controls are commissioned, then operation is observed with the zones balanced.

As-built records show manifold circuits, cable routes, sensor locations, embedded splices, joint clearances, and test values. We mark serviceable components and preserve access to manifolds, valves, panels, and controls. Operations staff receive the start-up sequence, alarm response, glycol testing requirements, and inspection points at drains and unheated pavement transitions.