Double Angle Designations
Double Angle Designations
(OP)
Hello. I am calling out a double angle as (2)-L6x3 1/2x5/16 (LLBB). If I want the angle oriented "long leg vertical" (LLV), is it necessary to add that to my call out or is it understood that LLBB is oriented with LLV?
To make this more clear, which one would be correct?:
(2)-L6x3 1/2x5/16 (LLBB) or
(2)-L6x3 1/2x5/16 (LLBB)(LLV)
Thank you.
To make this more clear, which one would be correct?:
(2)-L6x3 1/2x5/16 (LLBB) or
(2)-L6x3 1/2x5/16 (LLBB)(LLV)
Thank you.





RE: Double Angle Designations
Dik
RE: Double Angle Designations
LLBB means "Long Leg Back-to-Back," meaning the 6" leg of the angles would connect to each other. This is opposed to SLBB, "Short Leg Back-to-Back," where the 3½" legs would be connected.
For the original question, the LLBB is necessary to differentiate how the angles are attached to each other. I would think the global orientation would be depicted in a typical detail of this joint. If this is a vertical brace, typically the connected leg would be vertical, so the gap between the angles is occupied by a gusset plate at the ends. A simple detail would resolve this without question.
I've never seen LLBB used with LLV. When I've seen LLV, it's been for a single angle member.
RE: Double Angle Designations
Thanks again.
RE: Double Angle Designations
RE: Double Angle Designations
RE: Double Angle Designations