what thickness ply would you need for a single bed

Submitted: Wednesday, Feb 13, 2008 at 23:08
ThreadID: 54561 Views:5574 Replies:10 FollowUps:3
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Fnally gettng the back of troopie built out and am wondering what thickness ply would be needed for bed base - how thin? It's going over shelving/box style, so no super large sheet area.
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Reply By: disco driver - Wednesday, Feb 13, 2008 at 23:23

Wednesday, Feb 13, 2008 at 23:23
Loris,
Caravans use 5mm ply but it is usually well supported all ways, but even then it bends a fair bit as the framing used is only 25mmx25mm pine.

IMHO The absolute minimum thickness would be 12mm, but only if there are a good number of supporting frames under it both ways, (length and width).

16mm would be better but would still need supports underneath (1 at each end and a couple evenly spaced between).

19mm would only need support along each side but is fairly heavy to handle in large pieces.

Disco

AnswerID: 287369

Follow Up By: Member - loris G (NSW) - Thursday, Feb 14, 2008 at 00:16

Thursday, Feb 14, 2008 at 00:16
Disco,
Thanks for advice. Like all questions posed re 4wd, you always get a variety of answers - you say 19mm, Shaker (next reply)says 10mm. Supporting structure underneath will play a large part. Once again, thanks. Loris
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Follow Up By: Shaker - Thursday, Feb 14, 2008 at 09:57

Thursday, Feb 14, 2008 at 09:57
Loris, I base my answer on being a qualified boatbuilder, albeit in an another life!
You had already stated that there would be no large unsupported areas. If you use MDF, you would need to use a thicker panel & in my opinion weight is always an issue to be considered.
Also bear in mind that plywood flooring in houses can be as thin a 15mm.
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Reply By: Shaker - Wednesday, Feb 13, 2008 at 23:37

Wednesday, Feb 13, 2008 at 23:37
Good quality plywood in 10mm should be fine.
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Follow Up By: Member - loris G (NSW) - Thursday, Feb 14, 2008 at 00:20

Thursday, Feb 14, 2008 at 00:20
Thanks, Shaker.
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Reply By: Member - Dick (Int) - Thursday, Feb 14, 2008 at 01:38

Thursday, Feb 14, 2008 at 01:38
Loris, have a look at my Profile and you will see the bed i have in the back of my 79 Series. I put storage bins under it. It is very strong and does not move.

In the Troopy I sleep on top of the drawers.

Cheers
Dick







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AnswerID: 287380

Reply By: Willem - Thursday, Feb 14, 2008 at 02:23

Thursday, Feb 14, 2008 at 02:23
I use 16mm MDF. It is as strong as.
AnswerID: 287382

Reply By: Member - John and Val W (ACT) - Thursday, Feb 14, 2008 at 07:30

Thursday, Feb 14, 2008 at 07:30
Loris,

We used 12mm chipboard, supported only on the sidewalls, 3 panels running full width (1500mm) and about 650mm wide, with 25x40x3 aluminium angle reinforcing the long edges. The front and rear panels are hinged to the centre one so can be raised to access the gear below. This is adequate (just). I'd use 12mm ply with the same aluminium "next time". See our rig photos.

HTH

John
J and V
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AnswerID: 287395

Reply By: Mainey (wa) - Thursday, Feb 14, 2008 at 08:08

Thursday, Feb 14, 2008 at 08:08
loris,
since 1997 I have used a bed made from ½ inch chipboard.
It was built by a cabinet maker in Melbourne and is still in perfect condition.
He cut heaps of 2 inch holes in the surface of the bed board to allow the foam mattress to 'breathe' and much larger 'gaps' from the sides to eliminate weight.
I put 7 plastic storage crates underneath the 'bed' which contain everything from food and cooking equipment to clothes and dive equipment with access from the back and front/side.

Mainey . . .
AnswerID: 287398

Reply By: Member - Phil G (SA) - Thursday, Feb 14, 2008 at 17:29

Thursday, Feb 14, 2008 at 17:29
I'd suggest 12mm ply and supported at least every 600mm.
I make a lot of stuff out of 9mm or less, and don't believe it will support a body easily.
AnswerID: 287483

Reply By: Hairy (NT) - Thursday, Feb 14, 2008 at 23:46

Thursday, Feb 14, 2008 at 23:46
Gday,
How far does it need to span?

The less supports the thicker the ply.
The thicker the ply the less supports you will need.
AnswerID: 287542

Reply By: Richard W (NSW) - Friday, Feb 15, 2008 at 05:37

Friday, Feb 15, 2008 at 05:37
My hard top camper has L400X W900mm spaced steel framework supporting 10mm plywood for a queen size mattress.
AnswerID: 287556

Reply By: Member - graeme W (WA) - Sunday, Feb 17, 2008 at 22:06

Sunday, Feb 17, 2008 at 22:06
Hi Loris.

We have used 16 ml marine ply for the bed in our roscos trade mate camper.Has a slight lean on one side where there is no support for 30 mm.My advice is to go for 18 mm if cost is no problem.

Cheers Graeme.
AnswerID: 288054

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