Positive Drive Home Elevator

Engineering notes

A lift for the service core, not the garden

In a house the lift can stand outside; in an apartment it has to go inside the existing core. That means fitting between the stair flight and the party wall, staying within the structural grid, and keeping structure-borne noise out of the neighbouring unit.

The counterweight-free drive removes the space normally reserved for the weight stack, which is what makes a slim car viable in a narrow core. Because the machine frame is fixed to the guide rails rather than to the slab, vibration goes into the shaft structure rather than into the building's floors.

Specified like a residential appliance

The unit runs from a standard single-phase supply, draws roughly the power of a kitchen appliance and returns to standby automatically. The controller logs trips and door cycles, and the optional remote module notifies the owner's phone if the lift is taken out of service.

Landing doors can be matched to the apartment joinery, and the car can be finished in mirror stainless steel with concealed lighting, so the lift reads as part of the interior design rather than an add-on.

Working within a managed building

Installing a lift inside a residential building requires consent from the building management and, in most jurisdictions, a structural assessment. We supply the load data, shaft drawings and machine reaction figures needed for that submission, and can join a technical call with the building's engineer.

Installation is scheduled around residents: material hoisting at agreed hours, dust screens on the landing, and a commissioning test witnessed by the building's representative before handover.