Shear tab connection

[sedesigner06]

I am using AISC table 10-1 to determine the number of bolts that i need for my connections. I have determined using 3/4" bolt diameter with 3/8" angle with standard hole type. For thread condition is has "SC Class A" and SC Class B" can anyone tell me where i can find an explanation of the two so i can determine with one i will have and determine my capacities. Thanks you

 

[JLNJ]

IS your intent to use slip-critical bolts? Your connection my not require it.

 

[structSU10]

A couple things. table 10-1 is for double angle connection not shear tabs. Also SC is a slip critical connection, not a standard connection. If you are unsure how to use the table, you would be better suited calculating the capacity yourself first, then compare to the table based on what you got. Might help you understand the table better.

and FYI the thread condition is talked about in the bolts section of the code (chapter 7) with design discussed in section J of the spec (13th edition).

 

[sedesigner06]

JLNJ- I do not believe i need slip critical condition base on my design and what i have read on other sources. I also plan to use thread condition "n" as i plan for the worst case scenario where the threads will be included in the shear plan.

structSU10- Yes that is what i plan to do is work a hand design of a ALL-BOLTED DOUBLE ANGLE CONNECTION to get a feel for it and use the tables to develop a sort of schedule of capacity vs # of bolts

Thanks for your help.

 

[NS4U]

The "Class" has to do with the bolt type. Class A bolts are A325, Class B bolts are A490. This is discussed in the manual or the specification.

 

[NS4U]

Sorry, got my words confused. "Cass" has to do with the type of surface preparation. Class A has low coeff. of friction, Class B has high coeff. of friction.

the word "group" relates to bolt type... Group A bolts are A325, Group B bolts are A490.

This is all covered in the manual.