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Designing a new desk, with a bed?

post #1 of 25
Thread Starter 
Evening all.


After reading all the other ( most of em ) desk mods and looking at projects like Kapros his desk i wanted to build something myself.
So after a couple of days of thinking and drawing i made my near final model in CAD and exported it into Sketchup.

Sadly seeing i don't have the cash or space for a build of this size i will need to wait with building.
Gladly this gives me time to get some feedback from all of you!



As you can see this Desk will be rather big...
The monitors will be mounted to a guide rail from a old desk drawer.



The idea is that when i wanna go to sleep ill just lift the monitors upwards and lock the guide rail.
After locking them in place i can easly let the bed down without having the monitors hit my keyboard or mouse.



The desk will have 2 spaces for PC parts who are connected to the Tunnel on the desk by 3 holes.
I'm thinking of using 2 fans in the tunnel and 3 per PC cube to reduce dust build.

Thats about it for now, I'm still thinking of things to improve but i think i have a solid design to continue with.


( Before you start criticizing me here a couple of things i can't change:P )

Desk has to be 30cm from the wall to let the bed flip.
I cannot move the hinge part of the bed seeing this will make the desk to deep.
the wooden wall behind the desk is the availble space i have against the wall.
There no computer parts in the build yet seeing i'm still thinking about where to put what.

I'm looking forward to any suggestions you guys might have thumbsupsmiley.png
Edited by Wrathblade - 1/4/14 at 2:00pm
post #2 of 25
gonna be real heavy to lift. Counterweights? hydraulics off a junked station wagon?

maybe set it up with your toilet for a chair, and put a fridge next to it. you'll never have to leave...


Edited by bombastinator - 1/4/14 at 5:09pm
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post #3 of 25
Ok time for a bit of design critique.

The height of your bed is around 4 feet from your dimensions assuming the mattress is flush when nested in it's box, if using a box-spring and a thicker mattress it might be much higher. I'm 6 feet tall and I wouldn't be able to get onto that without a bit of a jump onto it which isn't something I'd want to do with my computer and monitors underneath it. You would need to either stand on your chair (bad idea) or incorporate a bit of a ladder/step stool into your design.

It's a twin bed by the looks of it, you may or may not want to include a bed rail on the side. I've slept in a lofted twin bed and a lofted queen bed for a few years, both much taller than your design without rails, it's more of a personal preference and depends on your sleeping habits.

Weight Breakdown (Aprox.)

3 Monitors (30lbs)
Twin Mattress (30-50lbs)
Twin Boxspring if using (40lbs)
Random Desktop form Newegg (15lbs x 2)
Human weight (130-240lbs) <---- Your own weight, might be much higher if sharing, though I wouldn't want to sleep with someone in a twin bed.
Supported components (50lbs) <--- Not gonna actually calculate it, seems like a good estimate to me.

Total= 440lbs ~ 200kg

I've built two things that have held weights similar to this, my lofted queen bed and my 55 gallon fish tank stand. Both were constructed a lot more sturdier than this. Granted the fish tank was over 600lbs I wasn't about to have it fail so I made it extra beefy and could easily stand/jump on it. I'd suggest cross braces on the sides as well as the back, about half way down the legs length or even lower.

What width of lumber are you using for the bed box, monitor shelf, and bed box legs? Looks like .25 or .5. Either way you are putting a lot of faith in that holding up the bed+you. Also your hinges and monitor rail are going to be screwed into it. I don't think either will be thick enough to take screws long enough to support any kind of weight. The connection from hinge to back of desk in particular is going to have a lot of stress on it. You will need to use some really long and thick screws/bolts as well as really beefy hinges. Wood that thin will most likely fail under that stress since that's like 100lbs resting on it at such a stressful angle.

Kicking out

I don't have enough knowledge about the physics that's going on while the bed is raised, but it seems to me there is a real possibility of the sliding down the wall and pushing the desk forward with a big crash.

Hinges

I don't think think they will work without space being between the bed frame and the desk itself, if it sits flush I don't think they will move unless there's a specialty hinge that gets around this problem and can support high weight.

Overall

I dislike the design. I feel like a normal lofted bed with a custom desk attached would be a much better and easier solution. The folding function is useless in my opinion. Murphy beds fold into the wall to conserve space, this folds for no real reason other than to be different and it adds a lot of extra engineering problems.

There's all kinds of beautiful loft designs out there.



If you want your desk/computer to be concealed there are better options.



Something like that with your desk sliding in and out horizontially might be cool. You can then make your monitors fold down in a similar way against your desk and slide your desk into the bed's base. Your bed could still be usable while you are on the computer if you have someone over. You could even do something cool like make the monitors slide up to the bed level in case you'd like to watch or use your computer while in your bed.

I think you've moved way to fast from your ideation phase to concept phase. You've got a lot more exploring to do before even thinking about building.
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post #4 of 25
Thread Starter 
Thanks for the replies,

If been thinking of making the drawers allitle more shallow so i can add a support beam crossing the hole desk,

also this is still a work in progress:P i might have to make the wood allitle thicker here and there but i doubt it will cave in on itself when folded upwards,

also the hinges will be fitted when the bed in ontop of the desk, so the desk will truelly rest on the tunnel section instead of the hinges,

when folded upwards the hinges should be able to hold the box + matras.
I'm thinking of using around 4 hinges or more, just to distribute the weight evenly.

Sadly i forgot to mention this but the legs and beams under the desk will be metal, used from my current desk.
seeing how sturdy this thing is atm i doubt it would cause any trouble.
Still i'm sure the tunnel section might need some fortification but again i doubt it won't hold when using 2cm thick wood.


As it stands the idea is to make a simpel box with 2cm thick wood and a 1cm thick back plate.
the monitors will be fitted to a guide rail from a old drawer and behind the backplate a beam will be to both strengthen the box and hold the guide rail.

Also gotten a good tip about the legs that will be resting on the desk itself,
i'm going to put small rubber pads under these to reduce scratching.

also i won't fall from the bed;P if been sleeping in a bed without guard rails for ages, never fell from my bedxD
still a little stepup might be needed. but remember that the monitors will be fitted to the backplate and the support beam.
the bed itself lays on a wooden spring keeping the bottem of the bed ventilated + clear from the backplate.

( no idea how to call it in english.... it's basicly a row of curved wood giving it a spring effect, called a latten bodem in dutch )


still thanks for the warning.

and got any pictures of that fish tank? my friend wants to get one soon and my dad used to own 3 fish tanks with tons of koral and sea fish.
i'm curious about what you have in it:)
post #5 of 25
all a modern box spring does is provide airflow to the mattress and asct as a spacer for old style beds. you could use ikea slats, or even just a bunch of rope and eyebolts to serve as the box spring. As for hinges, consider a piano hinge. They're easier to fit and hold a good deal of weight.

counterweights are probably the easiest to deal with. maybe do em inside an 8" pvc pipe to keep them from swingiing around and looking ugly. you could also use them as rear legs.

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post #6 of 25
Thread Starter 
Was thinking of using some heavy piano hinges, just not one thats 2 meters long.

also about the weight, you really think this thing will be 100 kilo's?

the only thing i have to lift is the bed box with the matres and the monitors.
there all hinges to the back of the desk.

lets say the matras weight is 10kilo's
the wood total would be 25 kilo's
the monitors would be around 25 inc the guide rail.

that would make it around 60 kilo's.
and seeing i only fold it upwards i won't even need to lift 60 kilo's.
not to mention id be lifting it from 75cm high.
i was thinking of using the hydrolik openers the use in cars for the back.

still i doubt i would have trouble lifting the thingxD i'm not a 12yo....

still if anyone has any idea's or knows any software to calculate the stress this will put on wood / metal please reply.

atm i'm strengthening the bed box allitle and looking at how ill take some weight of the tunnel section.
post #7 of 25
yeah i do. Ever tried to lift a murphy bead with a set of broken springs? It sucks, and they use thin mattresses. i'd go with the big hinge. and a locking mechanism for the up and down positions. you don't want that thing to fall on your head or make wakka wakka noises if you happen to get lucky. That's often a mood killer and will not endear you with any neighbors.

i seem to keep returning to junk auto parts here, but hatchback latches are designed to resist vibration and are quite strong.
Quote:
no idea how to call it in english.... it's basicly a row of curved wood giving it a spring effect, called a latten bodem in dutch
those would be the slats i referred to.

Edited by bombastinator - 1/7/14 at 6:32pm
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post #8 of 25
Thread Starter 
I agree:P i also keep coming back to car parts-.-

still having 1-2 of those hatchback latches on both sides of the desk will not only make it easyer to fold but also keep it upwards incase someone's beeing a ass-.-

don't wanna imagine what damage it would give if someone let the bed slam down with a free fall.

Atm i strengend the desk but i'm i'm wondering about how i can support the tunnel,
seeing this part will hold the hold bed section when folded upwards i'm looking for things i can do to take some weight off.
post #9 of 25
i'g get latches for the down position too. if that doesn't make sense don't worry. oneday it will.
\
your tunnel (horizontal0) or my tunnel (vertical)? for yours, inf a hole saw just a bit bigger than the tupe, and cut some holes in plywood squares to use as interior bracing



if you mean mine it's a golden opportunity to bolt directly to the wall so nothing will fall over.
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post #10 of 25
Thread Starter 
Sorry m8 i was talking about my tunnel design:P

sadly your idea of counter weights might work but id be a hassle + won't look nice enough for me.
thats why i wanna try 2 hackback latches from the junkyard first.

still your idea of making those interior bracing's might be enough to secure it all.
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