Re: Deck weight limit
Let's do some calculations. Let's say your trailer has four tires, each inflated to 30 psi. 3000 pounds divided by 30 psi means a tire contact area of 100 square inches (25 square inches per tire). A square foot is 144 square inches. So each of your tires weighs 750 pounds in an area a sixth of a square foot (about 5x5 - further calculation puts this at about 4300 psf); your deck needs to be able to support that much weight in that spot.
That's not to say the the entire structure must be able to support 4300 pounds loaded on every square foot simultaneously, but your average backyard deck isn't built to handle that much point load. Were the 4300 pounds evenly distributed across the entire deck, it might be OK. A standard substructure may be able to handle the load, but the decking itself must be able to transfer the weight to a larger part of the structure than standard decking would.
P.S. -- at 200 lbs, a man with a size 10 shoe exerts probably around 600 psf point load. And don't even ask about the lady with stilettos.
Last edited by Fencepost; 02-05-2012 at 10:26 PM.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.