Your friendly neighborhood OSHA violation :)

[savage_samsquanch]

This one made me scratch my head hard. Almost made me wish I’d worn my brown pants. Thought some of you might get a chuckle out of it. I don’t think 2x4s are meant to handle 10-25k pounds. But hey, at least these didn’t split this time. Gotta love shift work.

 

[Mr.Glock]

Crushing weight of a Pine 2x4 is right at 25k lbs., varying woods can hold more. We used Oak as cribbing for Heavy Equipment that far outweighs 25k lbs. If used properly it is the best for shoring up equipment.

 

[Rustytigwire]

Steel on steel is slippery
I cushion stands with wood on car frame to distribute load aand not dent flimsy unibody frame.
Poor placement is not good though.

 

[savage_samsquanch]

I honestly had no idea. Usually when I take over for this guy the 2x4s are split. I always just set the frame on the stand and never have an issue.

 

[Perplexed]

The weight is distributed across the (mostly) horizontal grain, so the wood would be less likely to split than if the grain had been vertical.

 

[John6185]

I’ve been young, foolish and poor and I’ve taken risk that I shouldn’t.

 

[savage_samsquanch]

Agreed^

 

[-Pjackso]

Dang, those Jack stands are freaking awesome!

And yes, wood has good compressive properties. Providing the wood is not thin, then cracking isn't usually a problem.

 

[ConstitutionCowboy]

With something like the seam in the frame running fore/aft, the 2 X 4 should run across the seam. Running the grain parallel with the seam is a split and departure of the 2 X 4 eminent. A good way to learn that lesson is having to change your underwear after the wood departs while you are under the vehicle. If you are lucky, the stand will bear the drop of the frame and maintain enough clearance for you to creep out from under.

Squish!

Woody

 

[HKP7M13]

Steel on steel is slippery
I cushion stands with wood on car frame to distribute load aand not dent flimsy unibody frame.
Poor placement is not good though.

I have seen a jack stand shoot out from under a car before, lucky the tire was under the frame and stoped it from going to the ground. I like to have a extra something under the vehicle if possible.