How Are Ski Resort Parking Structures Built for Heavy Snow Loads?

The structural design starts with the geotechnical investigation and the snow criteria, then sizes the frame for the governing combinations: full snow on the top deck with live loads below, wind on the exposed structure, and seismic per the region. I design the top deck for drifted snow plus snow removal equipment with the drainage that prevents ponding. The concrete specification is the durability design: air entrainment, water-cement ratio, curing requirements, and reinforcement protection for the de-icer exposure. Expansion joints accommodate the mountain's temperature range, and the joint sealants are selected for movement and chemical exposure. I detail the precast or cast-in-place connections for the lateral system and verify the foundation design against frost depth and the site's soils. The structure is designed for a long service life in the harshest parking environment — the mountain winter.

The circulation plan handles the ski-day peaks: entry and exit lanes sized for the morning rush with the queuing that does not back onto the access road, internal ramping that moves cars efficiently, and the pedestrian separation that keeps skiers safe. Ventilation for enclosed levels is designed for cold-start emissions — cars warming up in winter produce the peak carbon monoxide — with controls that ramp ventilation to the actual contaminant levels. Lighting delivers the illuminance and uniformity for dark winter mornings with energy-efficient fixtures and controls. The drainage system captures deck runoff through trench drains and piping to the site's stormwater treatment, with freeze protection at every exposed point. I coordinate the MEP systems with the structural frame so the equipment, ductwork, and piping never compromise the structure or the clearances.

Parking structure commissioning proves winter operation. I verify the drainage flows and the heat trace works, test ventilation controls through a cold-start simulation, and confirm lighting levels on a dark morning. The circulation is walked as a skier would walk it. Here is the checklist I hand resort operations teams.

• Design the top deck for drifted snow plus snow removal equipment with ponding-proof drainage
• Specify freeze-thaw and de-icer resistant concrete with protected reinforcement
• Separate skier pedestrian routes from vehicle lanes for the morning and evening surges
• Ventilate enclosed levels for cold-start emissions with demand-based controls
• Freeze-protect every drain inlet and verify drainage before the first storm