oldrunner:
The in the previous addendum, the ratio's lower limit was 1.17 with a corresponding F'y = Fy whereas in addendum 2, the lower limit and F'y equation is as referenced above. Fy = 65ksi, and the w/t ratio is approx. 19.5 with a calculated F'y = 78.5ksi.
ATSE:
The section modulus is...
The values you used is for the original code without addendum 2. Addendum 2 changes the ratio lower limit to 0.759 with a corresponding equation F'y = 1.27 Fy.
I am currently designing a monopole based on the TIA-222-G addendum 2 code. It's an 18-sided polygonal mono, and according to Table 4-8 of the code the effective yield stress can be higher (27% more) than the material's specified yield stress. This seems counter intuitive, and considering a...
