The equipment is located under the hood for fire reasons and cost, one hood is cheaper than two and we have little room in these trailers. Then we have work flow, which can make or break a menu in no time at all if you are under pressure to really put out some product and you are running from point a to point b to cook an egg. If you can, really think long and hard about your menu, work it out in your head how you plan to prepare it. I would go as far as to do a trailer/kitchen mock up on my garage floor. Pretend you just got an order for a burger, and go through all of the motions of getting the meat out of the fridge/freezer, cook it, get the bread, lettuce, tomato, onion, ketchup, build it and package it for the final sale. Where is your condiment/prep table? Where is the bread? At the other end of the trailer or above your head on a shelve? Speed and organization will be key to putting out a good product quickly. Really think about this because it is expensive to redo equipment placement in a trailer, get it right the first time and just don't go with what the builder tells you. He may say it is popular, but he is more than likely selling his design for other reasons other than work flow. You have to cook in it, he doesn't.
That heavy equipment is not "that" heavy, other than say a good sized griddle. The hood is bulky, but again, not that heavy. You also have your water supply along with holding tanks, which can be used as ballast to even things out along with the counter tops, storage and refrigeration. There is allot going on in these mobile kitchens to allow for proper weight distribution.
The one thing that I would be concerned about is the roof. If you have a roof mounted exhaust fan installed along with AC units, make sure that the roof has been beefed up to support the weight. I have read, not experienced, that some manufacturers just throw up an exhaust fan only to have the roof and walls sag in a year or two because they did not add reinforcements to accommodate the weight and the wind forces on the unit when you are pulling it down the road.
Hope this helps.
<message edited by localnet on Mon, 12/6/10 7:01 AM>