How Is MEP Design Engineered for a Ski Resort Base Lodge?

Every fuel-burning appliance in the lodge must be evaluated at elevation. The engineer applies the manufacturer's altitude derating to boilers, furnaces, unit heaters, and kitchen equipment — a rooftop unit rated at sea level is a smaller machine at 10,000 feet — and verifies that gas-fired kitchen equipment will actually ignite and hold temperature with the thinner air, since some commercial ranges and fryers need high-altitude orificing. Electric heat avoids the derating question but carries the resort's demand charges, so the engineer typically models both and lets the lifecycle cost decide. Ventilation is designed around heat recovery because the lodge exhausts enormous volumes: locker rooms full of wet gear, restrooms, and kitchens. Energy-recovery wheels or heat pipes on those exhaust streams preheat the incoming ventilation air, and the engineer sequences the recovery so the coldest incoming air sees the warmest exhaust first. Vestibules and air curtains are the envelope's front line. The main entries see hundreds of door cycles per hour on a powder day, and the engineer designs double vestibules with heaters sized for the door-open condition, plus overhead air curtains at service and rental doors that stay open for equipment movement. Boot rooms and rental shops get dedicated exhaust — wet boots and drying gloves generate humidity that will condense on any cold surface — and that exhaust is routed to the heat-recovery stream rather than dumped to the outside.

Use this checklist before the permit set is developed: • Combustion equipment derated for the site's actual elevation and verified against the jurisdiction's design temperature • Domestic hot water plant sized for the rental, lesson, and après-ski peaks with recovery, not just storage • Commercial kitchen hood exhaust balanced with tempered makeup air; demand-controlled kitchen ventilation evaluated • Heat-recovery ventilation on locker-room, restroom, and kitchen exhaust streams • Snowmelt zoned for entries, accessible ramps, and service areas with slab-sensor control and pre-storm override • Heat trace or in-envelope routing for every water line exposed to freezing conditions • Septic or sewer capacity confirmed with the county health department before seating and fixture counts are locked • Fire-district water-supply review completed early — hydrant flow, access, and any required on-site storage • Jurisdiction confirmed: incorporated ski-town design review and energy code vs unincorporated-county fire-district path