Okay let me give you some advice from someone who was part of a family owned trash business for 13 years.
1st off- this dumpster more than likely is going to a tipping floor. Demo dumpsters never end up in a landfill, they are dumped in a large building, where they are seperated. If you put wood, concrete, roofing shingles, and household trash- it doesnt "matter" to the trash company, as they seperate it before its being finalized.
2nd- a dumpster does not have a SET WEIGHT...they are rented by the yard- 15, 30 etc. They are CHARGED by weight. This is because when you end up at the landfill, incinerator, etc... the hauling company is charged by weight. You can put 3 tons in a 15 yarder or 3 tons in a 30 yarder, doesnt matter
3rd- if someone is "dumpster diving" they are in the wrong if they get hurt. Every single dumpster has a sticker on it that states "do not play in or around" and most have a "do not climb" well give its impossible to get into a demo roll off without climbing- if they get hurt- its their issue not yours.
4th one thing you may not realize, with the amount of rain that has been going on in the east coast- that dumpster that would normally weigh in at 1.5 tons, could very well weigh in a 2 tons because of saturation of the material in it. Those were the best dumpsters we use to have...especially yard debrise...dirt get soaked- we get rich, becuase haulers do not pay for debris its clean fill..
Hope that clears up the confusion
Brandy