Hanging punch bag from a shed wooden beam 50x152mm

[Jimmiep]

I've a 19kg (41lb) punch bag that I want to hang from a wooden beam in my shed. The shed is a large solidly built structure that is 5m x 3m (16ft x 10ft), and the beams are 50mm x 152 mm over the 3m span. I'm afraid I don't know the wood used as it was constructed by the last owner of the house (a builder).

I am not drilling into the beam, but instead using a custom made strap around the beam to support the bag. The literature of the strap says the beam will need to be able to support 90kg, I presume as there is a lot of heavier bags on the market than I have (19kg) and to allow for added pressure when moving after being hit.

My question is how do I know if the beam will be strong enough to support the bag?

Any help much appreciated!

I am able to hang my body weight (82kg) from the beam and do a pull up, so I *think* it should be fine, but is there anyway of knowing? any formulas?

 

[big-all]

how many beams do you have within 6 ft to spread the load across ??

 

[Jimmiep]

Hi, thanks for commenting.
The shed is 20ft long with a beam every 3ft or so, there's probably 5 beams (not there at the moment to check). So in 6ft I suppose there could be three beams (if that's what you mean? Sorry I've not got much of a clue about this stuff!) I can only hang the bag from one though..

 

[big-all]

my thought are what ever number off beams a 4ft x8ft sheet can cover providing its at least 3 to spread the load
but i would still be worried with that load

 

[jj4091]

I presume you will hang the bag about 4 feet from the wall & attack it mainly from the side facing the wall, or do you need to move around it? If it's the former then fit a diagonal 45 degree brace to the joist 3 feet from the wall & to a joist hanger fixed 3 feet down the the wall. Like a gallows. That will support your bag.

 

[AlanE]

Can you not just bolt another timber either side of the originals?

The basic problem really is too small a beam is liable to bend, strengthening it will reduce that. If you can support the ends of the two strengtheners will be a bonus.

If there is no wall vertical under the ends of the beam you intend using then installing one under each end of beam might be a good idea simply to reduce risk of distorting the wall top member.

 

[longdogs]

Please stick a picture of Ed Milliband on it. Thanks

 

[foxhole]

Should be fine if you only punching it, much greater force if you are kicking as well.

 

[Jimmiep]

Can you not just bolt another timber either side of the originals?

The basic problem really is too small a beam is liable to bend, strengthening it will reduce that. If you can support the ends of the two strengtheners will be a bonus.

If there is no wall vertical under the ends of the beam you intend using then installing one under each end of beam might be a good idea simply to reduce risk of distorting the wall top member.

I could do this - should my timber either side stretch the whole width of the beam or just a couple of feet?

 

[Jimmiep]

Should be fine if you only punching it, much greater force if you are kicking as well.

Not kicking, just some light punching!

 

[Jimmiep]

few of pics of the shed beam location:

Planning on using one of these: http://indoorxtreme.co.uk/shop/punc...-hanger.html?gclid=CJKk--6s-sQCFYJZ2wodinkAwQ

Bag won't be hanging in centre of beam - is that an issue?

thanks all for your thoughts so far!

Beam to hang bag from

• Jimmiep
• 16 Apr 2015
• 1

Beam to hang bag from

Shed beam

• Jimmiep
• 16 Apr 2015
• 1

Arrow shows where I'm planning to hang 19kg bag using Everlast hanging strap

Close up of beam hanging location

• Jimmiep
• 16 Apr 2015
• 1

Close up of beam hanging location

Other side of 3m beam

• Jimmiep
• 16 Apr 2015
• 1

Other side of 3m beam