On May 10, 1:49*pm, ransley wrote:
*I am having an apartment building gutted because of fire, the
contractor wants to park a dump truck on my lawn and sidewalk which is
a few years old. The truck is medium size dual rear wheels with about
16-20 ft bed 5 ft high, I guess maybe 10 ton loaded but I dont know.
What do I need to have them put under the wheels to protect my
concrete and lawn, can I really protect the concrete from cracking. I
thought using 1" plywood cut in half so I would have 2" thick 4 foot
wide sheets under each wheel. Or must I have them park in the street.

It depends on how wet the ground is. If dry, no problem at all. If wet
they only answer is a load of stone spread out or substanial steel
plates, maybe both.
For get bits of wood, they will be just mashed into the ground if wet.

As to the concrete in practice, there is absolutely nothing wil save
it if it's too thin to stand the weight, only bury it with stone, you
would need around 9" to make any difference at all.

A tractor as someone has mentioned has a much lower ground pressure.

The clue is to ask about the tyre pressures. If it is 80-100psi, you
have a problem. If it's 20-30 psi a lot less problem.

Worst case scenario is if truck digs in and gets stuck on your lawn
and needs to be towed out. Happens very easily with two axle trucks.