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PEP BB dimensional.sand.shelf - sturdy wall-mounted shelf for heavy stuff

BB dimensional lumber woodworking - sand badge
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This is a badge bit (BB) that is part of the PEP curriculum.  Completing this BB is part of getting the sand badge in Dimensional Lumber Woodworking.

Sometimes you have stuff and you don't want to put it on the floor.  Let's build a storage shelf to get it up and out of the way!

The general idea is to build a very strong shelf that is customized to a need and hanging off a wall or ceiling.  This way it can be over a bench or haybox cooker so you double up on usable space.

Here is one the boots were in the process of building recently:


Or like this one without the plywood:


To complete this BB, the minimum requirements are:
- at least 6' wide and 18" deep
- can clearly support 500 pounds (distributed across the shelf)
- no treated wood, plywood, OSB or other engineered wood-like products
- no paint

To document your completion of the BB, provide proof of the following as pics or video (less than two minutes):
- the wood you're starting with
- the construction partially underway
- the finished shelf
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Submission flagged incomplete
Howdy this is my submission or the sturdy wall mounted shelf. The dimensions are 16' in length, 23" in depth and 8' tall. I used 2x3s as frame into the wall, then tacked a 2x4 onto those, screwed my vertical supports up to the tacked in supports, untacked them and pulled them out to set in my bracing.  I know it would have been easier to just go 24" deep but my garage door rails would have been in the way.  I did this solo and did not know about this website or badges system at the time.
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Staff note (gir bot) :

Someone flagged this submission as not complete.
BBV price: 1
Note: Lovely storage!  However, BB requires photos part way through and wall mounted shelves.

 
Posts: 95
Location: Billings, MT
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Approved submission
Lucky me!  I had a client who wanted work benches installed in his pump houses.  One of them fit this BB!  Not much better than getting paid to get PEP badges.  It is worth mentioning all the lumber in these pics/project was salvaged from construction waste near the job site.

The bench/shelf is 81x23 inches finished.  For reference, I am six feet tall and 190 lbs.  I found it rather convenient that there are lines on the wall that show that it meets minimum specs.  However, I didn't have 500 lbs of stuff with me to put on this shelf.  What is a boy to do?  Below I included the specs for the fasteners I used, wood strength and load capacities, and showed that me jumping onto the platform (dynamic load) did not make it shudder, shake, or creak with any sign of displeasure (you'll just have to trust me on that one).

I will round down to give the badge requirements the benefit of the doubt.  The wood was structural lumber of what I assume was fir.  I used two  4.5" HeadLOK lag bolts with a shear strength of 250lbs and three #10x4" with 100lb pull out strength per inch of thread and two inches of thread in wall (200lbs).  Total the long ledger board can hold over 1000lbs.  The two side ledgers were fastened with at least two #10x4" screws with two inches thread into a stud plus a couple extra shorter ones for good measure (won't even count those little guys).  Total screw strength in fir on sides can support 800lbs.  Each support of two "outriggers" was fastened to the ledger with two 10x4" screws with two inches of thread, 800lbs (lever arm force of 20 inches unknown, but front piece adds support).  The front piece was attached with #8x2.5" decking screws with an inch of thread (lets say these little babies are 50lbs/piece on the conservative side) and a total holding strength of  400 lbs.

Considering a 2x4 can support 300lbs on edge, as I built the shelves, and this span is shorter than a standard 8 ft stud then one can conclude that a shorter span can support more PLUS the strength of the 2x6's used for the shelf surface and oriented horizontally at 50 lbs per linear foot.  That would suggest that the wood of the shelf is strong enough to support more than 500lbs with ease.

While I did not physically have enough weight available on location to test this shelf, I felt very comfortable jumping up onto it.  It would support three of me with ease, one in the middle, and one on each side by the walls (evenly distributed).  Please also consider that it is constructed in a similar fashion with similar materials as other shelves that are able to be proven to hold 500lbs of stuff.

I sincerely hope that the judges will side with me in my pursuit of this BB, and accept my screw science research and lumber strength report as an acceptable proof of the strength of this bench/shelf under load in spite of the absence of physical weight.
Before.jpg
Space the shelf/bench will be installed.
Space the shelf/bench will be installed.
Some-lumber.jpg
Salvaged lumber rough cut to length
Salvaged lumber rough cut to length
halfway.jpg
Frame in place.
Frame in place.
pallet-wood-for-top.jpg
More salvaged lumber
More salvaged lumber
complete.jpg
Finished shelf
Finished shelf
jumping.jpg
Under a dynamic load! 190lbs plopping down with gravity.
Under a dynamic load! 190lbs plopping down with gravity.
with-a-body.jpg
Job well done!
Job well done!
lag-specs.jpg
Reference to screws used
Reference to screws used
screw-science.jpg
More screw strength research
More screw strength research
Staff note (gir bot) :

Someone approved this submission.
Note: Looks like it can easily hold 500 lbs, good job!

 
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