Reply by CaptainKlutz

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Posted on Loft Bed Joinery

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3858 posts in 2416 days

#1 posted 09-22-2020 05:52 AM

+1 There are standard CPSC safety rules ‘SAFETY STANDARD FOR ENTRAPMENT HAZARDS IN BUNK BEDS’ (CFR Title 16, Chapter II-B, part 1213) on commercial loft beds for height of railing above the mattress and opening between the rails. It is a good guideline to follow for DIY.

Not many wood movement issues with bed, following standard design shapes.

If the bed support slats are solid wood, the only challenge is leaving little space for width expansion.
Use engineered lumber (plywood) for deck and you don’t really care.

In the what I have I forgot dept:

The choices made on HOW bed breaks down for transportation will impact joinery more than any other factor. As fitting the assembled bed through doorway into bed room limits the size of major pieces.
Unless bed is built in the room as permanent fixture; will need to use fasteners, or wedged/pinned tenons to allow break down to smaller pieces.

Some designs have the bed(s) separates from supporting leg frame. Other designs the bed is assembled in tall vertical halves, with sides firmly fastened together. Same challenge either way; how to assemble and maintain strength.

Don’t plan on it being a family heirloom, unless you have a lot brothers/sisters with kids. Kids seem to grow out of the desire for loft beds in 2-5 years. Check CL if you want confirmation.

Suggest you over design the structure to hold weight of 2 adults or ~3 children bouncing up/down on it during a sleep over. Worst case might need to handle the classic clown car game:
How many little girls can fit on this unbreakable pink loft bed that dad built, while mom is popping the popcorn?

Answer: My last creation supported 10 little bodies till wood started cracking, and they all decided to jump off.
Daughter has never slept in any loft bed again, not even at camp; and shes an adult now. Yes, I have a family of Klutz.

Best Luck.

-- If it wasn't for bad luck, I wouldn't have no luck at all, - Albert King - Born Under a Bad Sign released 1967

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