calculate bolt size to hang equipment

[epgasser]

I have a piece of equipment that will be hung from the ceiling. I need to determine the proper size and quantity of bolts to hold in place. Help please! Thanks!

 

[drawoh]

This question is not answerable. You have provided practically no information. What are you hanging? What part of your ceiling is it hanging from? Who is going to install it? What are you doing with the equipment once you have it hanging? If it fails, what or who will the equipment land on?

This sounds like a good project to hand over to a qualified engineer.

--
JHG

 

[stressebookllc]

If you know the weight of what you need to hang then you need to know the following:

1) Bolt/screw shank nominal diameter
2) Bolt/screw Material

There are standard ultimate load values in MMPDS Table 8.1.5 (b1) and (b2).

For example, if you are using an alloy steel #10-32 (NAS517) screw, ultimate load per screw will be 2890lb per screw.

You can use what ever safety factor you need, say 1.5, yeah go for it, why not. If I were you, I'd worry about the structure above the bolts.. just saying.

http://www.stressebook.com

Stressing Stresslessly!

 

[desertfox]

Hi epgasser

Read you're post and look at the information provided, based on that information how would you help somebody.

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

 

[MintJulep]

Generally this would be found in the installation manual. Assuming that the piece of equipment is designed to be hung.

Again, assuming the thing is designed to be hung, the size of the holes in the thing's mounting brackets are a good guide.

 

[Tmoose]

Fasteners into drywall or fasteners into joists can make a bit of difference, like stressebookllc said.

 

[SnTMan]

Coupla 10-32 screws works for lots of stuff.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[racookpe1978]

And a couple of 10-32 screws fail for many other loads and conditions. 8<)

Your question cannot be answered as written.

 

[chicopee]

Send a sketch of the hanger assembly with including details of the surface to which the hanger is to be mounted and dimensions, then something good is bound to happen.

 

[MacGruber22]

Coupla 10-32 screws works for lots of stuff.

Should have kept that comment to yourself. IMHO, these kinds of posts are not good to get involved with. Clearly as a layperson, Epgasser could misconstrue advice given and make a very poor mistake.

"It is imperative Cunth doesn't get his hands on those codes."

 

[Tmoose]

I successfully lifted and installed an in-ground single post hydraulic lift using a fixture attached with 16d nails. LOTs of them.

 

[SnTMan]

MacGruber22, point taken, however the statement is true. I did not state the OP could hang his equipment with 2 #10's. Whatever it is.

Vagueness begets vaguenss.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[SnTMan]

Honestly, I don't know why any of us waste a single word on this kind of post. There is literally nothing that can be said.

The problem with sloppy work is that the supply FAR EXCEEDS the demand