help figuring steel needed for hoist/roof support

[newbury]

I thought I posted about this a few years ago but can't find it.

I've got a 40x60 shop w/ 12' ceilings. It's presently got 2 support posts near the center. The posts are 4" x 3/8" angle iron 13.5' apart.


Because of the possibility with this changing climate dumping 10" of snow on us I'm thinking of upgrading and making a support for a hoist at the same time.

I'd like to put up 2 posts adjacent to the 2 present posts with a beam running between them that I can hang a 2 ton hoist off. See red.



I'd like to be able to lift about 2K off the back of my trailer or truck, so I don't need a Shield Arc 10K gantry. I'd probably "tie" them into the present posts.

So to TBN - either what's a good site to figure out what I need for steel (pipe, column, beams?) or suggestions for what I need?

As always price is a main concern.

 

[RedNeckRacin]

2,000 lbs or 2 tons for the lift? Are you replacing the beam already there with another one? Are you setting new posts?

 

[Shield Arc]

If you know your loads, this chart may help.

 

[skyhook]

I would just add another one or two beams to the one already there, looks like you have the room.
Then, wrap a tin sheathing around where the chain will be for your hoist.
I would also add the re-enforcements to the side's like you showed in your drawing.
Thats how mine is done.

 

[Leejohn]

I would 1st get the beam setting on the angle iron post, not hanging the way it is now. Then I would bolt 1/4 X the width X 13.5 feet of the beam on each side of it.

 

[CNC Dan]

I've got a 40x60 shop w/ 12' ceilings. It's presently got 2 support posts near the center. The posts are 4" x 3/8" angle iron 13.5' apart.

I'm not sure, but I think using angle iron as a post is not good.
It has poor buckling strength.
Use round or square tube, or a W profile 'I' beam. Cement filled tubes "Lally columns" are good too, and available at most lumber yards.

 

[newbury]

2,000 lbs or 2 tons for the lift? Are you replacing the beam already there with another one? Are you setting new posts?

2,000 lbs is about the most I plan on having to lift.

If you know your loads, this chart may help.

Thanks, nice to see you back. Always good to get advice from someone with 3 weeks of experience.

I would just add another one or two beams to the one already there, looks like you have the room.
Then, wrap a tin sheathing around where the chain will be for your hoist.
I would also add the re-enforcements to the side's like you showed in your drawing.
Thats how mine is done.

I was planning on 2 uprights, a crossbeam, and braces as indicated in red.

I'm not sure, but I think using angle iron as a post is not good.
It has poor buckling strength.
Use round or square tube, or a W profile 'I' beam. Cement filled tubes "Lally columns" are good too, and available at most lumber yards.

I was initially planning on Lally columns. These were Vestil FJB-150 Basement Floor Jack, 54" - 150" Height Range, Maximum Height Capacity (lbs.) 2588, Minimum Height Capacity (lbs.) 11200: Jack Post Bottle: Amazon.com: Industrial & Scientific an inexpensive one I found.

What sizes/thicknesses would be needed for either tube or I beam? Or is there a site with a handy calculator to help me work it out?

Like I indicated I planned on putting braces to support the crossbeam so it didn't span as much.

Again, thanks for all the replies.

 

[Shield Arc]

Thanks, nice to see you back. Always good to get advice from someone with 3 weeks of experience.

Thanks!:thumbsup:
When I built my bridge crane. I designed it, sent Auto-Cad drawings to the head of the engineering department of the company we worked for, so he could tell me what size iron to use. I told him I planned on use 4-inch schedule 80 pipe for the posts. He said he wouldn't even waste his time figuring the loads for that pipe, it was way over kill. I ended up using the pipe in the four corners, but used 8" x 8" x 1/2" wall square tubing for the two center posts. Hey when you get the iron for free, you use it.

 

[Cat_Driver]

OK - first of all never ever come here for advise on safety issues. This entire site is full of misinformation. GET A PROFESSIONAL do the correct calculations. Why come here for advise by a bunch of YAHOOS ( including me ) You want proof, simply looking at some random " CHART" is the most dangerous thing you could do. What about Working Load Limits, Proof Load, Breaking Strength/Ultimate Strength, Design Factor (sometimes referred to as safety factor)....and then there is the thing NO ONE talks about Shock Load. ........A load resulting from rapid change of movement, such as impacting, jerking or swinging of a static load. Sudden release of tension is another form of shock loading. Shock loads are generally significantly greater than static loads. Any shock loading must be considered when selecting the item for use in a system. That simple little math calculation can take 2,000 pound and make it 8,000 pound.
So would you put a loved one under a 2,000 pound load with a cable rated at 3,000 pound and a shock load of 8,000 pounds - take a guess what will happen.
YOU WILL KILL SOMEONE
Now do the right thing and get a professional engineer do the calculation as it related to rigging etc., safety is not one thing you can ever save money on. Do it right or you will kill someone.

 

[newbury]

Why come here for advise by a bunch of YAHOOS ( including me )

Yup, you wrote it.