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The capacity of service lift is up to
300 Kg
520 Kg
250 Kg
350 Kg
250 Kg
Service lifts, commonly referred to as dumbwaiters in building services, are small freight elevators specifically designed for transporting food, documents, or small supplies rather than passengers. According to standard Indian building codes and electrical installation guidelines for small service lifts, the rated capacity is typically standardized at 250 Kg.
Service lifts, commonly referred to as dumbwaiters in building services, are small freight elevators specifically designed for transporting food, documents, or small supplies rather than passengers. According to standard Indian building codes and electrical installation guidelines for small service lifts, the rated capacity is typically standardized at 250 Kg.
P=╬╖mтЛЕgтЛЕvтАЛ тАФ Represents the power required to lift a load m at constant velocity v with efficiency ╬╖.
The service lift operates on a traction-based or winding drum mechanism driven by an electric motor. It incorporates an electromechanical brake and a control system that ensures the car stops accurately at designated floor levels. Being compact, it lacks the complex safety passenger-rated systems, focusing instead on load carrying and floor-to-floor logistics.
Service lifts (dumbwaiters) are governed by strict safety rules prohibiting human transport.
The 250 Kg limit is a standard design constraint to manage motor size and shaft dimensions efficiently.
These lifts are primarily used in hotels, hospitals, and large office buildings for internal logistics.
Optimizes building logistics by reducing human foot traffic for material handling.
Highly efficient small-scale vertical transportation.
Strictly limited to cargo and goods; human use is hazardous and prohibited.
Requires regular electrical maintenance of the hoist motor and safety interlocks.
Kitchen to dining area transport in restaurants.
File and stationery movement in multi-story government offices.
Sterile supply delivery in hospitals.
Service lifts must comply with local lift acts and the Indian Electricity Rules (IE Rules) regarding motor protection and grounding.
Capacities exceeding 250 Kg are generally categorized under heavy freight elevators requiring more rigorous structural and safety testing.
C is correct тАФ The standard rated capacity for a service lift in Indian building service standards is 250 Kg.
In competitive exams, always differentiate between 'Service Lift/Dumbwaiter' (small, non-passenger, ~250kg) and 'Freight Elevator' (heavy, large-scale transport), as their safety compliance requirements differ significantly.