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Any engineers on /fit/? I'm about to put a power cage,

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Any engineers on /fit/?

I'm about to put a power cage, barbell and 180kg of weight in my 2nd floor spare room.

There's a thick carpet and I'm going to put a large piece of plywood down and some rubber matting.

Bad idea or will I be fine?
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>>35003251
>putting down some plywood
>need engineer advice
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As long as it's a single piece then it will spread the load and you'll be fine
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>>35003251
>Bad idea or will I be fine?

You mean, will the shit fall through the floor? Probably not. But I don't know your house, bro. Maybe not drop that 4 plate deadlift.
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Check your local building code for limits per square foot. I've got a machine with 320lbs on it on the second floor of my old ass house and it's fine. I can't remember the numbers but it was way over what I needed.
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Put it in a garage or building. How can people even OHP in a spare bedroom/basement gym?
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>>35003317
I have to do seated press. Still worth it homegyms are fucking awesome
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>>35003317

I'm literally doing OHPs right now in my mom's basement. Not even a manlet
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>>35003317
I would if I could.

I don't have either.
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>>35003302
Its 40lbs per square foot apparently.

Not quite sure how to interpret that.
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>>35003251
Construction manager here.

What is under the carpet? a slab or decking?
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>>35003444
Wrong picture sorry


Anyways, I have recently looked into this myself as a client wanted to make sure their spare room being built will be able to handle the loads of his weights and the movements.

It is all about the deadloads and point loads.

Deadload wise, you should not have to worry at all if it is a slab which it should most likely be.

A slab can handle a ridiculous load and you will never need to worry. (I personally have 300kilos of weights in my apartment which is on the 4th floor)


Point load is the issue but even this should not be a problem. What's heavier an elephant or a fat lady in high heels?

It's a joke example but I hope you understand.

As long as you are not piling all the weight on top of each other like a retard you will be fine.
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>>35003483
>What's heavier an elephant or a fat lady in high heels?
>It's a joke example but I hope you understand.

>Engineering humour
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>>35003444
I'm not sure to be honest, I don't live in until Monday. Its the second floor of a 1930s UK house, not a flat or anything.

>>35003483
I won't be storing anything in one spot, just 180kg + my 90kg going through my two feet once a week for 5 reps.
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>>35003483

Hey unrelated questions, but how difficult is it to sound-proof or deaden a room? I used to take music lessons in this huge warehouse with these great rooms that were like 95% silent from the outside even with people banging around on drums--but they were tiny rooms and I live in a normal sized room.

Also please explain as if I was a 5 year old because I know shit all about home improvement
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>>>35003560
>I'm not sure to be honest, I don't live in until Monday. Its the second floor of a 1930s UK house, not a flat or anything.

If it's from 1930's then you might be fucked.

If it's a slab then you're all clear and fine


If it's just joists then it is very unwise to continue.

Heres what will most likely happen if it is floor joists.

It will either break the floor and literally turn your house into snap city, or it will gradually wear down and destroy the floor. Floor joists are not built to handle that abuse even modern ones.

So if you were to continue on regardless of it's a slab or not.

Get a lot of those mats to soften the blows of deadlifts and do not drop the weight. Just put it down gently and controlled and you should be fine.

If you drop the weight you can expect you may crack a floorboard, but unlikely to fall through
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>>35003692
I am not a professional on sound proofing, I mainly manage projects concerning construction remedation on a large scale.

But I have done small residential building before.

>sound-proof or deaden a room
What kind of walls are the room you are looking to sound proof?
Most of the sound proofing will come from the insulation, type of wall and the thickness of whatever material it is.
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>>35003766

I don't know at all what kind of walls they are haha, I was hoping I could just paste something over the walls that would absorb the sound
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>>35003783
No idea about that.

I'll assume you have a typical plasterboard/drywall wall.

If you want to seriously sound proof you will have to insulate the walls with the correct material as well as pretty much double or even triple the thickness of your drywalls.

Look up Quietrock
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>>35003836
ok thx m9
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Will hang around if there are any more construction related questions I might be able to help with.

I specialise in waterproofing and concrete related problems.
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>>35003699
How can a floor handle massive wardrobes, king sized beds with two people in them, aquariums etc. with no problems, but 180kg deadlifts is snap city?
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how about OP stop being a fag and get a GYM membership for fucks sake
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>>35004323
idk how heavy you think beds are, but theyre not 180kg, and theres a difference between a weight at rest and a weight dropping from hip height
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>>35003317
10' ceilings
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>>35004323
>>35005050
Mate for one, a bed is not 180 kilos. A bed/wardrobe is spread across a large area.

Weight lifting such as deadlifting is dropping a shit load of weight on a much much smaller point.

You are not dropping a 180 kilo bed on a single point.

Use your dam head here.
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>>35004323
The guy is lying or he's not so good at his job or something. The OP probs has very little to worry about, plus it's not like the guy is going to transport the weight in one go. If there's any major deformation (can happen esp if you've had water leaking on wooden joists or something like that) he'll see it as he loads the weights into the space. You'd have the same thing with an aquarium while you fill it with water and that. I don't know why he's going on about slabs particularly. I mean you do get them obviously but for residential it's less common, they're not always preferred for various reasons. A 1930s house is likely wooden joists with some steel work stuck in as needed as time has gone on with some kind of floor boards over the top.

If OP can work out where the joists are that's the strongest area to put shit down over btw. If you can get access to the ceiling underneath you can tap the plaster board and listen for whether it's hollow or not. Or the ceiling above. They usually run at right angles to the roof ridge, and most internal supporting walls. Putting stuff nearer supporting walls is also a fairly good idea.

As for noise you need to decouple the vibrations of whatever from everything else. Your main noise is presumably weights hitting the floor. The thick carpet and underlay will deaden an awful lot of the noise, about the best you can do beyond that is put some rubber matting down. There's some specially textured stuff for putting under machinery (some use it under washing machines or fridges) you could stick in as an extra layer but may be over kill. Practically there's not too much more you can do.

I would say as well that live loads are not too much of an issue in general. Your house has to take things like people dancing or falling over or whatever. Dead loafs can be a problem because of creep. This is especially prominent in slabs. It's also why you have to be careful installing natural stone tiles because shit's heavy.
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Laying out plywood isn't going to do much to distribute the load. Your subflooring already does that. Keep the weights under 1000lbs and you will probably be fine. 1000+lbs is pushing it, but depends on the build. Check the size and spacing of your joists. If they're only like 2x8 spaced every 2 ft then I'd be worried. If they're 2x12s spaced every foot with cross bracing then you could park your car on there no problem. If you house is old though, you probably have 2x8s and shitty plank subflooring that won't be distributing the load as much..

But no matter how strong your floor is if you drop a deadlift, you are going to fuck your floor. And you're floor is going to warp over time from stacked weights. The only way you should this is keep a small power cage up there, and other lighter equipment and not a lot of weights. You can not keep a rack of weights like in pick related, or stack 45s in a pile. You can do it but you have to very conscious about the floor.

That said, if you don't own the place, I'd say go for it if they haven't prohibited you to put exercise equipment in it. Its on them if the floor needs to be repaired when you move out.
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How an engineer would respond:

Try it and find out!
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>>35003526
It's about pressure
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>>35007320
You said the joke wrong
And elephant is far heavier
But the lady in high heels exerts more pressure
You used the wrong word
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>>35006743
>That said, if you don't own the place, I'd say go for it if they haven't prohibited you to put exercise equipment in it. Its on them if the floor needs to be repaired when you move out.
That's definitely not true in the UK. Guy will lose his deposit and potentially could be taken to small claims.
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>>35003692
Sound proofing requires sealing ALL pinhole air exchange gaps and special HVAC treatment to prevent sound from leaking out in addition to appropriate building methods and materials. You can deaden a room with insulation but it won't work particularly well for keeping sounds IN.
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>>35003358
Do you even have to get out of bed?
>proving the 4chan basement dweller image real
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>>35004017
Bit of a stretch but hopefully you can help, I'm set to inherit my old family home, lovely gesture and all there but the thing's stuffed with rats, possums (Ausfag), water damage and sliding foundations. Very few of the powerpoints or lights work and the whole thing is cracking and falling apart. Real nightmare. Should I try and fix the issues or just burn it and claim insurance? It's worth about $1.4 million+ with land if it was fixed up but would the cost of fixing be higher than rebuilding? Cheers for the advice in advance
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>>35009485
No, you can actually sound proof a room with insulation, making a room acoustically dead is different. You do want to keep it air tight if you can but that's only one part of soundproofing. Depending on the typical sounds it may not even be that important
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>>35009790
Get a lawyer and ask them about a surveyor. Sometimes you need to inform the insurance company if you survey the property. You could also ask a surveyor friend to look on the down low or you could look at other similar restorations and ask people about it and have a look at your house yourself and make a judgement call. And so on and so on

Nobody here can tell you what to do. And the guy you asked is for reals lying on some level.
Thread posts: 37
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