wsg SE PE
Nuclear
- May 6, 2015
- 7
Hello all,
I stumbled across a few non-typical steel angles in some open web steel joists and joist girders (supplied by Vulcraft) yesterday. The web members in particular induced some head scratching.
Some of the shapes I measured with my calipers were coming in around .110" in leg thickness. This includes a coat of primer on each side of the leg, which I estimate (rough WAG based on some web searching) to be around 4-6 mils each, giving me a net steel thickness of around .10. As we're all probably aware, none of the standard angle shapes, as tabulated in the AISC manual are thinner than 1/8". Additionally, many of these angles have leg lengths smaller than 2", which is the smallest leg length listed in the AISC manual as well. I am struggling to determine exactly what size/thickness these angles are.
So, I guess I'm curious if anyone has a good reference for non-standard structural steel angles? Or better yet, does anyone have experience with steel joist design and fabrication as practiced by the typical US suppliers and know what types of cross sections they tend to use for smaller members. (I am familiar with the SJI Standard Spec.) I knew/assumed that the manufacturers used nonstandard shapes, but I'm curious if there's any sort of general size "standard" that these non-typical shapes are manufactured to. My Google skills are failing me.
Many thanks in advance for any helpful info or insight anyone might have.
Cheers.
Will
I stumbled across a few non-typical steel angles in some open web steel joists and joist girders (supplied by Vulcraft) yesterday. The web members in particular induced some head scratching.
Some of the shapes I measured with my calipers were coming in around .110" in leg thickness. This includes a coat of primer on each side of the leg, which I estimate (rough WAG based on some web searching) to be around 4-6 mils each, giving me a net steel thickness of around .10. As we're all probably aware, none of the standard angle shapes, as tabulated in the AISC manual are thinner than 1/8". Additionally, many of these angles have leg lengths smaller than 2", which is the smallest leg length listed in the AISC manual as well. I am struggling to determine exactly what size/thickness these angles are.
So, I guess I'm curious if anyone has a good reference for non-standard structural steel angles? Or better yet, does anyone have experience with steel joist design and fabrication as practiced by the typical US suppliers and know what types of cross sections they tend to use for smaller members. (I am familiar with the SJI Standard Spec.) I knew/assumed that the manufacturers used nonstandard shapes, but I'm curious if there's any sort of general size "standard" that these non-typical shapes are manufactured to. My Google skills are failing me.
Many thanks in advance for any helpful info or insight anyone might have.
Cheers.
Will