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Forum topic by superstretch posted 01-30-2012 06:53 AM 1314 views 0 times favorited 5 replies Add to Favorites Watch
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superstretch

1530 posts in 2156 days


01-30-2012 06:53 AM

Topic tags/keywords: walnut question bed rail

‘Evening LJs

I’m in the stages of planning a platform-ish type bed and was wondering if you knew of a recommended rail size for a california king bed (rails would be 84” long)

I just bought a 7/4 slab of s2s walnut that’s 110” long and 18” wide. A 6” rail would give me about 10.5 square inches for a cross section. Would that be enough or should I think about cutting an 8” rail (14 sq in)?

Thanks

-- Dan, Rochester, NY


5 replies so far

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chopnhack

375 posts in 1857 days


#1 posted 01-30-2012 08:00 AM

Are you asking because you are concerned with deflection? Keep in mind that most beds have 1×3 slats that run left to right between the rails with a post at the center of each slat. If you are truly making a platform bed, the sheets of ply that you use to tie the two sides together will aid in the rigidity of the entire strucutre. You could run your numbers through the sagulator to get a rough idea. Overbuild to account for… shall we say dynamic loads :P Also you may want to put a piece of felt between the two butting pieces of ply so that they wont creak as they move past each other.

-- Sneaking up on the line....

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superstretch

1530 posts in 2156 days


#2 posted 01-30-2012 03:56 PM

My main concern is the breaking point of the rails, not so much movement side to side. I’ll probably be using the Rockler mortised rain connectors, so I’m not worried about sheer strength, just the bowing and breaking point. Thanks for pointing me in the direction of the ‘sagulator’, although. I’m not sure if that would indicate a breaking point, although a 1000-lb load would show 0.009 in/ft of sag.

-- Dan, Rochester, NY

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chopnhack

375 posts in 1857 days


#3 posted 02-01-2012 07:01 AM

Being that you are going with the longer Cali. king there would be no reason not to go with the 8” tall rail – the more height and thickness the stronger the rail. Aesthetically it would look nicer as the 6” is way too skinny for the length of the bed. The sagulator only indicates how much sag, I believe it assumes plasticity. I mentioned the slats and a plywood base (platform in place of a boxspring) not so much to control the side to side motion but because it helps to balance the load thus increasing the breaking point. Not to mention if you put that post down the center of the slats (down the middle of the bed) you effectively reduce the load carried on either side. Good luck with your build and post some pics when its done. :-)

-- Sneaking up on the line....

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superstretch

1530 posts in 2156 days


#4 posted 02-01-2012 04:30 PM

Thanks again for commenting. I think I’ve decided on having 7” rails (perhaps a little proud of 7) and just finding some walnut further down the line for the rest of the build. The bed I have in my mind is something like http://lumberjocks.com/projects/59032 crossed with http://lumberjocks.com/projects/49809 , minus the footboard.

Since we don’t have a cali king mattress yet, I want it to kind of look like a Japanese style platform with just a queen mattress (memory foam)

-- Dan, Rochester, NY

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chopnhack

375 posts in 1857 days


#5 posted 02-02-2012 05:26 AM

That’s gonna look nice Dan! As you already know memory foam mattresses need good support.

-- Sneaking up on the line....

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