Any structural engineers?

**Minivan Man** · December 16th, 2004, 11:05 AM

Any one see a risk of damage to my slab through use of a 1331 pound Genie IWP 25S one-man scissor lift platform (like a cherry picker, but it goes straight up). I worry that the weight per square inch on the wheels (and, then, the outriggers) could somehow damage the slab. If it damages the hardwoods, those are replaceable (and I'll put cardboard and plywood down in any event). But does anyone have any thoughts/experience on how much weight a slab can take in a narrow area without risk of cracking?

freeflyer · December 16th, 2004, 11:14 AM

What is your slab thickness? What is the slab sub base?

**Minivan Man** · December 16th, 2004, 11:29 AM

I honestly don't know--I can try to look when I get home tonight. I am assuming a 12" tension cable slab, not sitting on piers.

Anthony - 98 GTS · December 16th, 2004, 11:30 AM

No problem. You are distributing a little more than 1/2 ton over four rubber wheels plus the outriggers. The loading per sq. ft. will be minimal.

I'm no structural/civil engineer, but I did stay in a Holiday Inn Express last night.

CAP · December 16th, 2004, 11:39 AM

Quote:

Originally Posted by Schill

I honestly don't know--I can try to look when I get home tonight. I am assuming a 12" tension cable slab, not sitting on piers.

If you know enough to post the above, you know enough to eye-ball it and satisfy yourself that no problem will be encountered.

FWIW, I think your psi loading will be well within the slab's strength.

**Minivan Man** · December 16th, 2004, 11:48 AM

Thanks for the input. I think I will use the "sidewalk test." If it doesn't crack my sidewalk, it won't crack my slab. I'm going to put some plywood-over-cardboard down to protect the hardwood floor anyway, which will also help distribute the weight a bit.

And Cap--you overrate me. Remember, as a lawyer, it's my job to sound like I know what I'm doing even when I have no clue whatsoever.

weeztones · December 16th, 2004, 01:27 PM

Quote:

Originally Posted by Schill

And Cap--you overrate me. Remember, as a lawyer, it's my job to sound like I know what I'm doing even when I have no clue whatsoever.

We're in good hands.

Signed,

Uzebekistan, Turkmenistan, and surrounding "stans"

GTS Dean · December 16th, 2004, 03:57 PM

If it cracks your slab, you live in a shitbox. Cover it and move out.

plumcrazy · December 16th, 2004, 05:24 PM

i used to sell them and saw them plenty of times on a garage floor no more than 6"...go for it.

should be no problem