I made an absolute fool of myself and drilled a 3/4" hole vertically through Laminated Veneer Lumber (LVL) when trying to run wires into an attic above an 30" wide exterior window. I realized my mistake after drilling through about ten (!) inches of material (not including the 2x4 the LVL sits on).
Here's a schematic of the exterior wall I'm working on:
The window in orange text is where the LVL is located. The wall this window is located has brick veneer siding.
Here's a view from the attic - the top plate that is outlined is where the LVL is located. The hole (if I went all the way through) would be at the text near the top of the outline. To the left of the top plate, you may be able to see a bit of the tar paper that's behind the brick veneer.
Here's an image of the exterior window in question:
I'm trying to determine what sort of load may be displaced due to drilling through the LVL. I intend on contacting a structural engineer for an assessment. At the very least, the roof won't collapse, but going almost entirely through a structural member is no good.
