Help..."raising the floor"

ok so i want to raise the ground level in my room by about 4 feet. so making a box that can hold proubly 200+ pounds and has carpet attached to it just like the floor. also it needs a way to rerout a air vent. feel free to ask questions about anything and thanks for any help

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Plasmana8 years ago
Why do you need to raise the floor?
yuckzee (author)  Plasmana8 years ago
im gitting a new tv and theres not much space in my room, so im putting it at the foot of my bed...and i dont need it to be very big but just so i could put a tv stand on it and still see the tv good...if that makes sence lol
I am no structural engineer but Why dont you just put the TV on a 4 foot box? You can cover it in carpet if you want.
skunkbait8 years ago
How high is your ceiling to begin with? I think it needs to support WAY more than 200lbs. Make a trap door! It would make an awesome hiding place!
That is a great idea! :-)

I want one...
Goodhart8 years ago
At work we had at one time, a Raised floor computer room. The heavy metal laden 36"X36" squares required a metal frame in order to hold them up, and support a few persons also. The frames allow for air conditioning from below but can also cause an accumulation of dust and such.
pic%5C1.JPGRaisedFlooring.jpg
yuckzee (author) 8 years ago
well the only chances of water would proubly be spills... and i dont need something that actualy attaches to the ground, but i actualy cant get mesurments right now, i have to rearange and think about my room before i actualy come up with anything. but thanks so far with the help
Big Bwana8 years ago
Some thing to think about when you say a box that can hold +200 Lbs that is honestly not a very high rating for a floor, well unless it's very small because by the time you add some furniture, you'll exceed 200 Lbs very quickly...

You might want to try this out and also visit the rest of this website to gain an understanding of what is called a Live load, which is the weight you intend to put on the floor and a dead load which is the weight of the floor it self... http://www.sbcindustry.com/loads.php

And if you could tell us the size of your floor we could recommend what size lumber you need and what centers you need to build on, and you might be able to get away with using engineered wood products as well, which can reduce your over all costs...

And I know people might complain about this, but you should look into it, if you need a permit to do this, because you may be adjusting the overall structure of your house and duct work, I don't know where you are and what your building codes are like... But you don't want to be on the floor when it collapses, and you don't want to be under it either...I've seen a 2nd level deck that collapsed and it wrote off the first level, tore the siding off the house, took out the power pole and a truck, and a simple permit would of spelled out how it should of been built and inspection requirements to make sure it complied and if it was built to code this deck would never of fallen (( that and the insurance company might of payed out, power poles here are like $800 and transformers are another $5000 and wire is $8 a meter and there is several meters between poles )) ....and building permits will make sure it shouldn't collapse and things like electrical junction boxes and plugs/ switches don't just end up getting covered over (( this violates most building codes ))
NachoMahma8 years ago
. Without knowing more details (size, purpose, &c), I'd build a frame using 2x8's or 2x10's - just as if I were building a house. Use the same size lumber to build your "legs."
. If you are certain the floor will have a light load, you may be able to use 2x6's.
. If ppl will never be on it and it's a small room, you might get away with 2x4's, but that's pushing it.
.
. Whatever you use for the frame, I'd suggest plywood or MDF(B) for the deck. 1/4-1/2", depending on load. If there a chance of contact with water, I'd avoid MDF.