Torsion box- Floating 8 Foot Shelf

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Forum topic by MRod posted 08-03-2009 07:04 PM 13205 views 1 time favorited 3 replies Add to Favorites Watch
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74 posts in 4265 days

08-03-2009 07:04 PM

Topic tags/keywords: torsion box floating shelf 8 foot long

Halo folks!!!

Okay so with advice from Marc the WW and the just go and get it done folks at woodweb (

I slung up a floating bookshelf last night that is – get this – 8 FEET LONG and 11″ deep, 1.75″ thick.

All on a nice 8′ long cleat of oak and well see the pics for the rest.

I threw 8 1 lb clamps and a sander on top of it. seems a bit wobbly but in sturdy. DOES THAT MAKE SENSE?

I am banging on it and such and it seems sturdy, but I would think that if you grab any shelf hanging from toggle bolts (rated at 50 lbs) that it would wobble as a complete box…does that mean it is going to come flying out of the wall.

I am using those more advanced toggle bolts that allow you to take them in and out until you commit to your spot. I have bolts every 18″.

THIS IS A CUSTOMER PROJECT, therefore I will be uninstalling this soon and re-installing at the clients shop where they will put 30-40 1 lb coffee bag on it. It will be installed about 9′ from the ground into a 1/2″ drywall.

HMMMM – your thoughts? Am I going to get a call back here?


Torsion box, before installation

-- MRod, Henderson, Colorado by way of Brooklyn!

3 replies so far

View lew's profile


12433 posts in 3957 days

#1 posted 08-03-2009 08:41 PM

I would think it should hold providing the mounting bolts, for the cleat, are fastened into studs and not just toggle bolts into drywall.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View MRod's profile


74 posts in 4265 days

#2 posted 08-03-2009 08:47 PM

That’s my problem. I am not sure what I will have behind the walls. I need to go over there and do a test, perhaps above the drop down ceiling to see what the customer truly has.


-- MRod, Henderson, Colorado by way of Brooklyn!

View TopamaxSurvivor's profile


18391 posts in 3878 days

#3 posted 08-04-2009 01:22 AM

There should be a stud behing every one of those mud strips where they mudded the sheet rock screws.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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