May have asked this before, but couldn't find the post. I have 5 pins in my second floor game room of my 13 year old home. I currently have four against a wall, kicking around making it five. Should I have any concerns about the weight? I love my pins but I love my house more. 
Your home isnt very old at all, I would not be concerned. I have seen older homes with second stories have 20 pins in one area.
Quoted from RDReynolds:
May have asked this before, but couldn't find the post. I have 5 pins in my second floor game room of my 13 year old home. I currently have four against a wall, kicking around making it five. Should I have any concerns about the weight? I love my pins but I love my house more.
Depends. Depends on how your home is laid out and how you space them and what else is up there. Pins spaced all evenly apart over (or against) load bearing walls? Pins all clustered against an interior wall on the opposite side of your bedroom with a three hundred gallon fish tank and jacuzzi?
Pins do a pretty good job of distributing their weight, but overall you're looking at 1600 pounds up there. Like 'flank said...if you start to see settling or new cracks anywhere you went too far!
My house was built in 1940 and has the original hardwood flooring under the carpet in my game room. I'm maxed out with 2 pins, 9 arcade cabinets, plus a couch, glass display case, and my big office desk in the connected side room. Recently noticed the floor squeaking in places it never did before. Planning to somehow add at least one more pin and a dedicated MK1 cabinet this weekend. Hadn't really thought about the amount of weight on the flooring... I wonder if I should be more concerned about it?
It shouldn't be a problem but you might get a little bit of floor bounce (set your tilts very liberal 
). General residential floor engineering codes call for a minimum load of 40 lbs. per sq. ft. if you want to calculate your loads.
Steve
Yes, very concerned. Now, since I am your friend I'm willing to store your Monster Bash for you, at no charge of course. It will be a bit of a squeeze, but I'm willing to make that sacrifice because I care about the integrity of your home. 
You beat me to it, I started typing after centerflanks post. I kept changing my post till it made sense to me and I took too long.
Steve
Quoted from DCFAN:
A modern home in the US should be able to handle 40 lbs per sq. foot.
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