In Fig 2 the double angle 2L4 times 3 timesl2 of G50 is subj

In Fig. 2, the double angle 2L4 times 3 timesl/2 of G50 is subject to tensile load, among which dead load T_d=70 kips, live load T_L= 60 kips, and wind load T_w=20 kips. The bolt hole is 1 in. in standard hole. The strength of G50 steel is Fy=50 ksi and Fu=65 ksi. what is the diameter of bolt hole (for steel materials rather than actual hole) that is used to calculate the net area for checking the double angle strength?

Solution

4. Nominal value for 352.25 to 355.25 = 353.75

5. total tolerance for 352.25 to 355.25 = 3

7. nominal value for 268.25 to 270.25 = 269.25

8. total tolerance for 268.25 to 270.25 = 2