[quote author=AdInfinitum link=topic=2771.msg22485#msg22485 date=1341890112]
Perpendicular to the joists, close to a wall, wood stand with full base runners (not small feet)...and you can go quite large provided the house isn't 100 years old...under 180gal...no worries...unless you're a hoarder with mountains of stuff everywhere adding to the total loading on the joists......
[quote author=Torx link=topic=2771.msg22482#msg22482 date=1341884346]
1 gallons weighs about 8lbs. But most people put a tank on the first floor, not really any difference between the floors unless you want to put it in the middle of the room. But even if you did that on a first floor, you would want to support it. Also, you are looking to put your sump in the basement and tank on the second floor? Going to need quite the pump to cover that much head.