Okay, here is a pseudo tute to explain some of the steps I took in building this thing. Feel free to PM me with specific questions.
BTW the whole family (mum, dad, 2 kids have all been on top of it at once, that little baby is not going anywhere!)Step One
I was lucky that Emily had an existing wooden slatted bed. But that would be easy enough to construct I think. I just had to take the legs off hers.Step Two
I used some heavy duty stud screws that were 125mm hex screws and screwed pieces of 2 x 4 pine into the wall studs at the height I wanted. (pre drilled all my spots and it was still absolute all the force I could use to drive those suckers home)
I made sure that the head end of the bed screwed into the corner and then the next two studs as well. As you can see from this pic, that meant it extended past the bed frame, but I covered that up later. I had the same problem with the piece that went the length of the bed as well. Although I used that to my advantage as you will see later.Step 3
This was the maddest bit coz I got that bed base up onto the wall all by myself coz my hubby wasn't home and I was on a mission. I then screwed down through the frame of the base into my 2 x 4s. Can't remember what length screw, maybe 70mm? Phillips head screws made for pine anyway.Step 4
I added the leg at the foot of the bed, I screwed through the frame in every direction I could and I used angle brackets as well. It was a piece of 4 x 4 that I got the timber yard to cut to length for me.Step 4.5
I used a piece of pre-cut melamine to stop her rolling out of bed, I used liquid nails and screwed it from the inside of the bed frame. Step5
I built the stair unit separately. I used 19mm mdf for this, except for the step supports which were pine. Iworked out how many steps I wanted and then worked out how far apart they had to be. It is basically a book shelf in its construction if you know what I mean.
Here is a drawing from the foot end of the bed to show what I did.Step 6
For the desk underneath I basically did the same thing as for the mattress (screwing pine supports into the stud wall) The top was pre cut melamine.Step 7
I used thin mdf for the false ceiling above the desk and used a set of lights I got from Ikea which are powered from a power point.Step 8
I bought pre fab drawers and runners and drawer faces and put them in as per instructions they came with. I decided on no handles as they would be a tripping hazard, that is why there is a gap at the top of the drawer so you just reach your fingers in to open them.Step 9
I covered up any mistakes with lots and lots of paint.
I wonder if this makes any sense? Feel free to ask specific questions and I will do my best to help.http://www.matadorcoupe.com/seebee65/LoftBed.htm
This link was useful and they have larger bed examples too.