Calculator Tips and FAQ's

The following is a list Frequently Asked Questions (FAQ's) and tips to help use the REC Load Calculator.  If you have a problem, email us at DNR-FMD-REC@state.mi.us.   We will try to get you help as soon as possible.

Q-1. Why doesn't the calculator compute on my computer? I put in numbers but get no answers.

A-1. The program requires a browser that understands JavaScript.   If the page looks funny or doesn't compute, check to see if it is browser related.   We suggest  a modern browser such as Microsoft Internet Explorer 4 or Netscape Navigator 3.  Both of these have been tested with the calculator and are available free from their makers.

Q-2.  I get "NaN" in the result boxes when I compute.  What is wrong?

A-2.  Each of the calculator's input boxes requires a number.   We did this to make sure that you considered each type of item.  If you leave an input box blank or goof and put in an alpha character, our program gets upset.  It lets you know by returning "NaN" which stands for "Not a number."   Look for your input error and try again.

Q-3.  I don't know the weight of the truck's bare chassis.  How do I get this?

A-3.  You need to find some truck scales.  Gravel pits, truck weigh stations or truck distribution facilities are possibilities.  Usually they will weigh your vehicle for a nominal fee.  For the local fire department, they will probably do it for free. Before you go, strip anything off the vehicle that won't be on your finished product.  Make sure you get both the total chassis weight and the weight on one of the axles. Then remember to return to the scales with the fully loaded, completed vehicle to check the weight before it is put in service.

Roscommon Equipment Center - Wildfire Equipment Research and Development