This is a calculator, designed to calculate the relative loads at both the kingpin (fifth wheel) and bogie (rear axle combination) of a trailer. It is capable of handling any length of trailer of either straight or step-frame design, together with 3 independent loads and a secondary deck.
The image drawing can be saved by simply right-clicking and selecting "Save as".
All loads are assumed to be evenly distributed.
Default figures have been provided, but you can use the samples below for convenience.
The following 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 Tri-Axle Curtainsided Trailer
13.6m Tandem Axle Box Van Trailer
13.7m Curtainsided Fixed Double Deck
13.6m Box Van Lifting Deck
13.7m Curtainsider Lifting Deck
15.650m Curtainsided Longer Semi-Trailer (LST)
You can add your own reference TitleThis will not affect the result but will appear in the results to identify different versions if printing. below.
This calculator was designed to offer general guidance when calculating axle loads. All generated drawings are subject to final engineering confirmation and Don-Bur accepts no liability for actions or decisions based on information from this calculator alone.
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