Shop Shelf detail page
My removable shop shelf is for my sliding miter saw so it was designed for that weight in mind.
I wanted as much space below the shelf as possible since I was originally storing my snow blower under there so I made the supports above the shelf instead of below.
Here is a nice little formula to help figure out the dimensions you will need to support the weight you would expect.
F=((W × D) ÷ H) ÷ Q
F = force applied to the eye bolts/hooks - minimum load rating for your eye bolts/hooks
W = Maximum weight expected at D (ensure you don't forget the weight of the shelf material)
D = Depth of shelf at the point of the Maximum weight. If you use the full shelf depth it should give you plenty of excess capacity
H = Distance between bottom pins and the top hooks/eye bolts
Q = the quantity of pins/hooks that will be used.
For my shop shelf the formula came out as 44 = ( (75 × 28) ÷ 16 ) ÷ 3
75 lbs is about the weight of the saw + an average 2x6 + some of the shelf weight
28" = distance from the wall to the bed of the saw
16" = just enough clearance so the saws sliding bars would fit under the top 2x4 support
3 hooks = The shelf needed to be wide enough to allow those long sliding bars to swing left and right so it put me over 3 studs.
The hooks I'm using can support 150 lbs each but they only need to support 44 lbs, so I have a lot of extra capacity.