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Oversized holes on only one ply

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PSSC

Mechanical
Feb 11, 2008
63
I have a situation where the holes are 1/8" oversized on the diameter instead of 1/16" on vertical diagonal braces, back to back angles.
I have in the back of my head a memory that if only one of the plies were oversized, the connection could be considered a bearing type connection.
In this case if the angles were replaced with new steel with the correct size holes.
I cannot find anything to confirm this wisp of a memory but wanted to ask if anyone else had seen this in the manual?
This is probably a false memory but I thought I would ask.

Thanks

 
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For braces, I use slip critical connections and hardened washers, and the oversized hole is meaningless. If bearing is required it may be a matter of fillet welding the brace to the ?.

Dik
 
Size and Use of Hole (LRFD section J3.2)
The maximum sizes of holes for rivets and structural bolts are given in Table J3.3. These holes are classified as:
i) Standard holes – 1/16 in. larger than the nominal bolt diameter
ii) Oversized holes – not allowed in bearing-type connections
iii) Short-slotted holes – allowed in both slip-critical and bearing-type connections, but the length have to be normal to the direction of the load in bearing type connections.
iv) Long-slotted holes – allowed in only one of the connected parts of either a slip-critical or bearing type connection at an individual faying surface. They are permitted without regard to direction of loading in slip-critical
connections, but should be normal to the direction of loading in bearing type connections.
 
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