Hanging a boxing punching bag

[heavybag]

Not an engineer of any kind, was hoping to get some advice from the smart people of this forum.
Basically, I hung a heavybag from a ceiling joist for about a year in my basement. It always shook up the kitchen that's directly above it when I used the bag, but other than that it worked fine. Recently however, I noticed a couple of things that concerned me so I took it down; first the adjoining bathroom had a long crack in the paint on the ceiling. I did renovate the bathroom a couple years ago, so maybe one of the drywall segments wasn't secured properly and it just sagged on its own. I just added a couple more screws, patched it up and repainted it and it's been fine since. But the other thing is a bit more worrying, there's a crack in the outside wall of the room with the heavybag. The joists in the basement run perpendicular to the wall in the picture, and they sit at about where the bricks begin in the picture. The thing is, the joist I hung it on is about 5 feet to the right of where the crack is. Is it possible that the vibration from the bag could have caused a crack that far away? There's nothing on the part of the outside wall that would be where the joist with the heavy bag was hung.

The second part of my question, how much impact would putting a 2x6 perpendicular to 2 of the joists and hanging it from that would make to the structural integrity? Any suggestions on how to take away stress from the joists when hanging it?

 

[MRob909]

Hard to say from the picture of course - it may or may not have an influence. how heavy is the bag?

 

[heavybag]

Hard to say from the picture of course - it may or may not have an influence. how heavy is the bag?

The bag's about 75lbs

 

[Tomfh]

Needs more photos including overview shots.

 

[heavybag]

Needs more photos including overview shots.

Dark out now, I'll get some more tomorrow. And what do you mean by overview shots?

 

[RattlinBog]

Quite the humblebrag of you to say you can break foundations with some punches. : o)

Going out on a limb without any evidence, is there a chance your photo is showing an outer layer of painted stucco? The texture makes me think of a cosmetic surface, not the foundation itself, but I could be wrong. What does your foundation look like from the inside (if not concealed), poured concrete or CMU block wall?

If your joists don't have any blocking now, that would help. Distributing the weight of your bag between two joists with full depth blocking certainly wouldn't hurt. If you're already seeing damage (splitting, twisting, sagging, etc.) to your joists, I would not proceed.

 

[Tomfh]

And what do you mean by overview shots?

Wide angle shots that show everything, as opposed to close up photo of a crack.

 

[heavybag]

Quite the humblebrag of you to say you can break foundations with some punches. : o)

Going out on a limb without any evidence, is there a chance your photo is showing an outer layer of painted stucco? The texture makes me think of a cosmetic surface, not the foundation itself, but I could be wrong. What does your foundation look like from the inside (if not concealed), poured concrete or CMU block wall?

If your joists don't have any blocking now, that would help. Distributing the weight of your bag between two joists with full depth blocking certainly wouldn't hurt. If you're already seeing damage (splitting, twisting, sagging, etc.) to your joists, I would not proceed.

I believe the outer wall is poured concrete, I can see it from the inside without the cosmetic finish. Definitely looks like poured concrete.

The ceiling is fully drywalled except where I installed the mount where I cut out a chunk of the drywall, so I'm not sure if there's blocking(highly doubt it) or if there's any damage to the joists. From what I can see though, the joist looks perfectly fine. If I were to tear down the drywall and block all around the location of the mount(say 3 or 4 joists deep on either side), would it make a noticeable difference to the vibration felt upstairs?

 

[heavybag]

Wide angle shots that show everything, as opposed to close up photo of a crack.

Oh okay. The rest of the wall looks pretty normal, no cracks or anything so that's why I included a close up shot. I'll snap a couple pictures tomorrow but in the mean time, here's a little diagram I made of the situation that might help

 

[heavybag]

I'll try to chip away some of the stucco around the crack and see how deep it actually is tomorrow as well.

 

[LittleInch]

More likely that what ever you did with that bathroom joist has pushed just a little bit on the outer wall. That "crack" is tiny and not in any way structural.

Having said all that, any repeated forces can do strange things and it would be much better to create or buy a freely supported frame.