I have used Google SketchUp (free version) for the last few years and have found it to be excellent for designing projects like this. All my crates are designed and costed based on these types of drawings.
For this project I tried something new in the design…I added the bolts I will use to put it all together.
The picture of the bolts was done by hiding the rest of the crate…it took about 5 seconds to hide the other components.
The finished crate will be 11 feet high, 11 feet deep, and 16 feet across.
Material is 2×4, 2×6, and 4×4 SYP with 1/2 13UNC galvanized bolts.
The cargo (shown in gray) is a US NAVY Aircraft Carrier catapult seal holder assembly that is 15 feet in diameter, and 6 inches by 4 inches in cross section. The seal is like a metal strip 4 inches wide and 300 feet long that is coiled inside the holder. The seal and holder assembly weighs about 1500 pounds.
The crate will be shipped a few hundred miles for rework on a special lowboy trailer that tilts the cargo when passing under overpasses and through tunnels.
Will post pics of the finished crate (if I get the bid.)
-- Pete, "It isn't broken, you just aren't using it right."