How do you calculate Wieght

[stang393]

Just trying to make sure my floor is strong enough for my next project.
What is a good Number to use for calculating wieght of a tank setup..
Also if there are any builders..
How can I calculate the load capactiy of 23Ft long - 12 inch Wood I-Beams?
thanks

 

[vtecbro007]

ive heard that a gal of water weight about 8. something lbs n thats ma $.02

 

[rangermonroe]

23' long wooden I beams? Are these manufactured or home-made?
If manu, that the manufacturer should have that info, also the local community college construction "professor" might be able to help.
You could also ask your local building inspector.

 

[irenicus]

What size tank are you constructing? What is it's footprint?

 

[stang393]

Originally posted by Irenicus
What size tank are you constructing? What is it's footprint?
300 Gallon
96x24x31

 

[stang393]

Originally posted by rangermonroe
23' long wooden I beams? Are these manufactured or home-made?
If manu, that the manufacturer should have that info, also the local community college construction "professor" might be able to help.
You could also ask your local building inspector.
They are manufactured...
But how much should I tell them I need to hold?
Whats water weight a gallon?

 

[down]

Originally posted by Stang393
They are manufactured...
But how much should I tell them I need to hold?
Whats water weight a gallon?
8.34 lbs./gallon
J

 

[khaotic2]

Freshwater = 8 lbs. per gallon
Saltwater = 10 lbs. per gallon
Don't forget the weight of the setup, sand and LR.

 

[stang393]

wow
So
300Gallon = 3,000lbs
40 gal sump=400lbs
Tank=200lbs
Stand=150lbs (guessing)
Canopy=100lbs (guess)
Sand=700lbs
LR=500lbs
Total 5,050lbs!
OMG!

 

[badkharma]

Well, your rock/sand will displace a lot of that water, so the calc's aren't perfect, but I'm guessing your stand will be heavier, and also all the equipment/pumps, etc. That's a lot of weight for a second floor.

 

[mburnickas]

The wood beam load deflections would be in a material handbook. Ie. machine hand book etc. It also debends on the wood being used. I-beams are VERY good on holding loads etc. I am not a builder, just an mech engineer.

 

[bocandoit]

not a framer by any means, but i install hvac in new construction homes. are you talking about the tji's (floor joists)??? is this on a second floor, or over a basement? or crawl space? can you see the joists, or assuming? how close is there a load bearing point? i think that all of this would come into play, you know?

 

[sw65galma]

They are the Wood I-Beams, I think Tji..
It's on a second floor that goes over a garage on the first floor
There are No load bearing walls in the house as it's valuted ceilings.

 

[yaksplat]

Originally posted by khaotic2
Freshwater = 8 lbs. per gallon
Saltwater = 10 lbs. per gallon

where are you getting these numbers?
if the Specific gravity of your tank is 1.025 then you just multiply the weight of freshwater by this number.
ergo, if freshwater = 8.34 lb/gal then saltwater = 8.55 lb/gal
not really much of a difference
Jim