Single Angle Connection
Single Angle Connection
(OP)
Hello all,
I am using a single angle connection to connect my supported beam to my supporting beams. I have noticed that the tables for single angle connections on CAN/CSA-S16 uses a three sides weld, the vertical side being on the angle heel. My question to you all would be: What difference would it make having the vertical side be on the toe of the angle as opposed to on the heel? Have you ever seen single angle connections where the vertical weld of the three sided weld is on the toe? Can I have the toe welded and still use the values from this table? Thanks.
I am using a single angle connection to connect my supported beam to my supporting beams. I have noticed that the tables for single angle connections on CAN/CSA-S16 uses a three sides weld, the vertical side being on the angle heel. My question to you all would be: What difference would it make having the vertical side be on the toe of the angle as opposed to on the heel? Have you ever seen single angle connections where the vertical weld of the three sided weld is on the toe? Can I have the toe welded and still use the values from this table? Thanks.
Clansman
If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.






RE: Single Angle Connection
RE: Single Angle Connection
JWB
RE: Single Angle Connection
The answer to your question is no--you must weld the heel to use the table. If you move the weld to the toe of the angle, you have greatly increased the eccentricity between the supporting member (which is where the vertical reaction occurs) and the centroid of the weld group. This creates additional moment on the weld group, which probably fails the weld.
DaveAtkins
RE: Single Angle Connection
RE: Single Angle Connection
RE: Single Angle Connection
RE: Single Angle Connection
Clansman
If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.
RE: Single Angle Connection
Clansman
If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.
RE: Single Angle Connection
This is a case where more is not better.
RE: Single Angle Connection
I have seen MANY single angle connections where they use a fillet weld all around on the leg to the supporting beam. I suppose this type connection is not right.
Also, would you prefer the three sided weld with the vertical weld on the heel or the weld shown on the PDF file that was attached? (vertical on toe, return on top, full on bottom)
Clansman
If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.
RE: Single Angle Connection
I did not have my Code with me at the time, but that was the page I was looking for to explain the types of single angle connections.
JWB
RE: Single Angle Connection
If you weld the heel, there can be no flexing of the angle, so you would not have a pinned connection like this type assumes. Therefore, do not weld the heel. Weld the toe, like AISC says.
RE: Single Angle Connection
Clansman
If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.
RE: Single Angle Connection
RE: Single Angle Connection
BA
RE: Single Angle Connection
I am sure you are familiar with the table on pg. 3-69 (yellow coloured pages) on CAN/CSA-S16 (Ninth Edition.) Do you think that this connection is less diserable to that shown on AISC tables? (detail was attached to enginerding's thread.) Your thoughts?
Clansman
If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.
RE: Single Angle Connection
This requirement gives the connection the flexibility necessary for a pinned condition.
I do not have my Code with me, but tomorrow I will scan the appropriate pages.
JWB
RE: Single Angle Connection
I don't think either detail is very flexible. I guess I'm not a big fan of single angle connections but I have allowed them when reactions are small. For high reactions, I prefer double angle connections with weld placed only on the edges of the outstanding legs. That is flexible.
BA
RE: Single Angle Connection
We typically spec 2L connections but there are many situations when the reactions are small and constructibility issues make using a 2L connection next to impossible, so in those cases a single angle or single plate is a better solution.
JWB