Building a gantry out of scrap ..

[zzr1200]

Ibs ?

KGs man!! Do we all want to be Merican now or somfink?

272 kg for anyone wondering.

Imperial, rules in my book as well Morrisman you just keep a British Stiff Upper Lip, let these young-uns use their new fangled measurements.

 

[arther dailey]

Like this.

View attachment 453339

impressive

 

[owas]

Will be a few weeks before I get a chance to start working on it but I picked up the free channel from work.
Probably a tad overloaded

 

[gaz1]

Like this.

View attachment 453339

4 beams will carry 6000kg.
Milling machine about 1100kg - no problem!
I wouldn't stand under it though
That racking looks pretty feeble though compared to British stuff - and I would put foot plates on it.

that spread the load between 2 cross beams and was strengthened with the center support piece

 

[Ed.]

My main concern with lifting the milling machine in that setup is the upright distance from the floor to the bottom horizontal beam, The top part is way over kill so I wouldn't have a problem with that section but the legs holding the lot up to me are a bit suspect in respect to the fact that if they are straight, then there shouldn't be an issue, but if one of the legs got bent by being bumped it could possibly topple. Obviously that didn't happen but always a potential.

It's a bit like the videos you see on youtube where a forklift bumps the corner leg of a row of shelving uprights in a warehouse which bends the upright and the whole row just crumbles up in a pile, The design of shelving relies on all the vertical uprights being straight with added cross and horizontal bracing. Realistically 1100kg is not a whole lot of weight for that shelving. If it was just being lifted off a trailer, remove the trailer and then lower the mill to the floor then probably safe but to me potentially worrying.

If I was doing it I would have added a third vertical bearer to make the end bottoms into a more trianguar shape where the base is on the concrete for more stability but that is just me anyway it appears it worked the way it was.