Hardwood lumber weight

[Bentley]

How do I estimate the weight of a trailer load of hardwood? I need to transport a fair amount of hardwood planks, mostly 1" by random widths and lengths. (3" to 10" wide, and 6' to 12' long) Mostly redoak, some whiteoak, and a fair mix of cherry, and some unknown, but feels about the same weight as the redoak.
I have a 16' tandem axle trailer that weighs about 1800 lbs empty. The axles are 3500 lb each. So using the 7000 lbs minus the 1800 leaves me just over 5000 lbs of remaining capacity.
How can I estimate how high I can stack these planks without overloading the trailer? The trailer has brakes on one axle, and I'm pulling it with a full size pickup with lots of power, so no problem there.
I need to move this lumber about 135 miles, and do not want to damage an axle or blow a tire on the highway.
Any ideas from the experts out there?
Thanks in advance for your input.

Bentley

[poorboy]

Green or dried ? lots of variables.. for a pick up probably about 1000b ft.

[Bentley]

Good question, and sorry for not including that. It's all well dried. Been sitting in a garage attic for several years now.

But I don't exactly understand the rest of your answer.
Please explain.

b

[deaconjim]

If all else fails, cut a 1' piece and weigh it. Calculate the number of cubic inches in the piece (length x width x thickness) and divide the weight by the number of cubic inches. That will give you a lbs/in3 figure.

The next thing would be to calculate the capacity of your trailer in cubic inches. With that information, you should be able to determine the maximum depth of the load that you can haul.

[fordy]

..............Load as much of the shorter lumber in the bed of the pickup as possible , then use the trailer for the remainder . , fordy

[just_sawing]

http://www.csgnetwork.com/lumberweight.html
this will do it

[Bentley]

Thanks to everyone.....Just Sawing; The website with the calculator is just what i needed.
I appreciate the assistance.

b