This calculator will determine the maximum payload capacity of a given uniform payload within any trailer or rigid bodywork dimensions.
It is able to work out up to 4 individual sections including the main deck, swan-neck, upper deck and upper swan-neck. You do not have to use the sections that are not relevant. If you do not want to use any sections, simply delete the dimensions for that section.
For example, if you want to calculate the capacity for a straight-frame single deck trailer, you would delete the dimensions for the swan-neck, upper deck and upper swan-neck areas. Finally, you would increase the main deck length to a suitable dimension.
Some default values for a Double Deck curtainsided trailer are provided as an example.
Simply alter the values in the form below and the drawing will update automatically to show how the load would be positioned and what the total capacity is.
The 'Samples' section below will assist with starting points.
You can save each drawing by right-clicking and "save image as..."
All measurements are in mm other than volumes which are stated in m3.
The following body type buttons will auto-fill common dimensions in the form fields below.
You will still be able to customise the values in each field to suit.
13.7m Curtainsided Trailer
13.6m Box Van Trailer
13.7m Double Deck Curtainsided Trailer
13.7m Lifting Deck Curtainsided Trailer
13.6m Double Deck Box Van Trailer
13.6m GRP Lifting Deck Box Van Trailer
13.6m (Blade) Lifting Deck Box Van Trailer
15.650m LST Curtainsided Trailer
You can add your own reference title below. It will not affect the result.
This calculator was designed to offer general guidance when calculating potential payload capacities. All generated drawings are subject to final engineering confirmation and Don-Bur accepts no liability for any loss as a result of decisions based on information from this calculator alone.