# How much weight could this hold?

• dimmaz88
In summary, Scott was asking if it is possible to calculate how much weight this simple component could hold. He was given dimensions and was told that the component could hold up to 2 metric tonnes. However, Scott is not an engineer and does not have the background to do the calculation himself.
dimmaz88
Hello everyone, this is my first time here and I was wondering if you could help.

I would like to know if there is a way of calculating how much weight this simple component could hold. It will be made from mild steel.

TIA

Scott

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How would you go about figuring that out?

dimmaz88 said:
Hello everyone, this is my first time here and I was wondering if you could help.

I would like to know if there is a way of calculating how much weight this simple component could hold. It will be made from mild steel.

TIA

Scott

Welcome to the PF.

What do you mean by holding weight? In which axis? In compression or in tension? What is the application? (hopefully not for a balcony in Berkeley...)

Sorry I should of added more detail. Imagine it's a chain link vertically, and it's under tension.

dimmaz88 said:
Sorry I should of added more detail. Imagine it's a chain link vertically, and it's under tension.

What is the application?

Sorry I meant horizontally, I'm really tired tonight lol. It's part of a slackline setup.

dimmaz88 said:
Sorry I meant horizontally, I'm really tired tonight lol. It's part of a slackline setup.

You mean like this?

http://www.mountainproject.com/images/33/35/106143335_medium_25f525.jpg

Erm..not quite lol. I hope it wouldn't combust.

dimmaz88 said:
Erm..not quite lol. I hope it wouldn't combust.

The problem is, we can't discuss potentially dangerous activities here on the PF (that's in the Rules link at the top of the page under Info). If you don't have the background to do the calculation yourself, it's probably not a good idea for you to be trying to make a DIY slackline setup. Aren't there commercially available slackline setups that have different weight ratings?

I thought there might be some materials software for working out things like this. I know this would take plenty of tension, I just wondered if I could work out how much.

If I compare the dimensions to avaliable items, this is overkill (comparison with a quick link for example).

Can't tell how much this piece will hold ... there's no diameter shown for the holes nor their location relative to the sides of the piece.

Sorry, forgot to add those in. Here is an amended pic.

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SteamKing said:
Can't tell how much this piece will hold ... there's no diameter shown for the holes nor their location relative to the sides of the piece.

Is it possible to calculate now you have dimensions?

dimmaz88 said:
Is it possible to calculate now you have dimensions?
Now for a quickie eyeballing (which you should never ever do without testing the part afterwards) calculation.

The thinnest section is a cut out through a hole and has a surface Area of 25*(9+9)=450mm^2.
Now the worst construction steel in the world S185 (there could be something worse than this) has a Yield Strength of 175-185N/mm^2.
That would give a 8 metric tonnes. So With a safety factor of 4 (as clearly you will be next to it in use) you could say it has a maximum strength of 2 tonnes.
All the above are with loads of assumptions.

Because Engineering is more about practice in hopes of avoiding the math, never use a part in a life threatening situation that has not been subjected to failure testing. Not sure how considering the strength of it.
Also if you know your mild steels yield strength you could do the math again and get a more real result.

Wow, thanks Lok. That's a great answer.

Would you mind explaining the (25*(9+9)=450mm^2).

I find this really interesting, I'll have to read more on the subject. I assume the size of the pin that passes through the hole makes a difference too?

Since this thread could involve life safety, it will remain closed.

## 1. How do you determine the weight limit of an object?

The weight limit of an object is determined by several factors, including the material composition, structural integrity, and intended use. Scientists and engineers conduct tests and calculations to determine the maximum weight that an object can safely hold without breaking or malfunctioning.

## 2. What units are used to measure weight limit?

The weight limit of an object is typically measured in units of force, such as pounds (lbs) or newtons (N). In some cases, weight limit may also be measured in units of mass, such as kilograms (kg) or grams (g), and converted into a force measurement using the acceleration due to gravity.

## 3. Can the weight limit of an object change over time?

Yes, the weight limit of an object may change over time due to wear and tear, changes in environmental conditions, or changes in the object's composition. It is important to regularly reassess the weight limit of an object to ensure its safety and functionality.

## 4. How do you test the weight limit of an object?

There are various methods for testing the weight limit of an object, depending on its size, shape, and intended use. These may include physical stress tests, computer simulations, or mathematical calculations. Scientists and engineers carefully design and conduct these tests to accurately determine the weight limit of an object.

## 5. Can an object exceed its weight limit?

Yes, an object may exceed its weight limit if it is subjected to a force greater than its capacity to withstand. Exceeding the weight limit of an object can result in damage or failure, so it is important to always adhere to the recommended weight limit to ensure the safety and longevity of the object.

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