crane operator
Senior Member
I've got some 2'x3' aluminum pads that I put down typically under the wood. They're actually old military landing mats cut down. If you set up with wood in a big span/ across a big rock etc, you end up breaking the wood all the time. In a flat spot I can get by with just the aluminums, I try to kick all the big rocks out from under (a big sharp rock can punch a hole through the aluminum), and make it kind of level if I can.
Sometimes there's no way you're moving enough dirt or rock to make a level place to start, we're mostly clay or rock, and I don't even carry a shovel, I'd rather just add wood to get level. If you look in this picture, you can see I've first put down a angled pad, I carry two of those on my small cranes, its just made out of a 2-3' square of 3/4" plywood, screwed together with ever shorter pieces. Sometimes I'll just lay down a 3"x12" x 3' under the downhill side, and the aluminum on top to bring it level. The aluminums will take a span that wood won't.
If you look at the one front jack I put down a angled pad, then a piece of 2x6 to bring the aluminum up level, then stacked wood to get my height. The aluminum stays ridgid over any gaps, and supports the upper boards solid. The back pad I got by with just kicking the big rocks out of the way, and throwing down a aluminum(if its any more crooked than the back one here, I'll pop a 2x6 or something under the down hill side of the aluminum to flatten it out). If you try to dig down on the front jack , to make a level spot, 1st its all rock, 2nd you're just loosing height that you'll need to gain back. If its just 1" clean rock on top, I'll kind of kick it to a smooth spot/ leveling it out, but its not transit flat or anything.
On my bigger cranes I'll make a double wide set of pads, to help spread out the weight, so I'm not sinking into the ground or a parking lot.
Sometimes there's no way you're moving enough dirt or rock to make a level place to start, we're mostly clay or rock, and I don't even carry a shovel, I'd rather just add wood to get level. If you look in this picture, you can see I've first put down a angled pad, I carry two of those on my small cranes, its just made out of a 2-3' square of 3/4" plywood, screwed together with ever shorter pieces. Sometimes I'll just lay down a 3"x12" x 3' under the downhill side, and the aluminum on top to bring it level. The aluminums will take a span that wood won't.
If you look at the one front jack I put down a angled pad, then a piece of 2x6 to bring the aluminum up level, then stacked wood to get my height. The aluminum stays ridgid over any gaps, and supports the upper boards solid. The back pad I got by with just kicking the big rocks out of the way, and throwing down a aluminum(if its any more crooked than the back one here, I'll pop a 2x6 or something under the down hill side of the aluminum to flatten it out). If you try to dig down on the front jack , to make a level spot, 1st its all rock, 2nd you're just loosing height that you'll need to gain back. If its just 1" clean rock on top, I'll kind of kick it to a smooth spot/ leveling it out, but its not transit flat or anything.
On my bigger cranes I'll make a double wide set of pads, to help spread out the weight, so I'm not sinking into the ground or a parking lot.