Dumbwaiter Sizing Calculator

Dumbwaiter dimensions and capacity from intended loads.

Load capacity (kg)

Car width (mm)

Car depth (mm)

Car height (mm)

Number of stops

Floor-to-floor height (mm)

Tab to move between fields

Area code compliant (1=yes)

Car area (m²)0.37

Car volume (liters)340.1

Total travel (m)3

Travel time (seconds)7.9

Motor power (HP)0.5

Shaft width (mm)760

Shaft depth (mm)760

Trips per hour78.6

Capacity (kg/hour)7,862

Overhead Mm1,514

How to Use This Calculator

What each input means

Load capacity (kg): Maximum load weight. ASME A17.1 limit: 227 kg (500 lbs).
Car width (mm): Interior width of the dumbwaiter car (max ~900 mm).
Car depth (mm): Interior depth of the dumbwaiter car.
Car height (mm): Interior height. ASME A17.1 maximum: 1219 mm (48 in).
Number of stops: Number of landings served by the dumbwaiter.
Floor-to-floor height (mm): Typical floor-to-floor height in the building.

Area code compliant (1=yes): 1 if car area is within the 0.836 m² (9 sq ft) ASME limit.
Car area (m²): Platform area of the dumbwaiter car.
Car volume (liters): Interior volume of the dumbwaiter car.
Total travel (m): Vertical distance between lowest and highest stops.
Travel time (seconds): Time for one full trip (bottom to top).
Motor power (HP): Required motor horsepower.
Shaft width (mm): Minimum shaft/enclosure internal width.
Shaft depth (mm): Minimum shaft/enclosure internal depth.
Trips per hour: Estimated round-trip throughput.
Capacity (kg/hour): Maximum material throughput at full load.

Identify Input Parameters
4 parameters
Load capacity (kg) = 100, Car width (mm) = 610, Car depth (mm) = 610, Car height (mm) = 914 = 6 input(s) provided
Calculate Area code compliant
1 = 1
Calculate Car area
Car area = (carWidthMm / 1000) * (carDepthMm / 1000)
0.3721 = 0.3721
Calculate Car volume
Car volume = carAreaSqM * (carHeightMm / 1000) * 1000
340.1 = 340.1