How many machines are too much weight on your stumps/bearers????

[spacejam0]

Hi
My house is on stumps and I'm wary the more machines I put in the games room the more weight on the bearers/stumps. I already notice that my machines move more on there legs when being played than my mates machines that are in his garage on a concrete slab. This got me thinking is it a problem to have too many machines in one room?....I remember a mate years ago had to beef up the number of stumps underfloor when he had a large aquarium installed.
What do you think?
Cheers...Tim

[Olivia_jason]

it would depend on the stumps and the condition of them, but more so the floor boards.
you had that fat guy who is sueing the government for falling through the floor boards because he was to heavy lol for the boards in his housing comision home. he was like 250kg or something.

a fish tank could easily weigh 300kg+ but that is in all in spot spot, pinball's dont weigh that much and would be spread out over the entire room, but you would hope there is a beam under at least a few.

 but you wold look at how far apart your bearers are and how many stumps you have, if you have good strong load bearing beams that are a prety close together with good stumps you shouldnt have to much trouble, the idea it would tranfer allot of the weight to other beams to even it out.

[swinks]

Domestic homes designed as a brick peir, bearers and joists building have a loading of capacity generally around 100kg per square metre - so given that a pinball is around the 125kg and not implying but the average is around guy in his 40's is probably 85 kg = 230kgs over 2 sqm.  Pinball weight is point loading to the floor which is worse than say a pallet weighing the same amount. All depends how old your house is, size of your beams and if it is hardwood or treated pine.

The problem is that the weight of the pinball is distributed over the four legs = 60kg for the pinball at the front plus the guy playing meaning 145kg plus any spectators = wobble and overloading especially if there are no joist in the section of the floor.

My advice would be install 2 steel I beams directly under the joists supporting where the front and rear of of the pinball legs sit. This may not be possible or more difficult if your bearers and joists are going 90 degrees to what you want to install. These I beams are then supported by a 400x400x400mm concrete pad footing and then a small brick pier.

Hope that helps.