Using AISC Specification Section J3.10 for the end bolts and AISC Manual Table 7-5 for the interior bolts, the available bearing strength is determined as follows: LRFD
ASD For the end bolts 2.00 Rn 104 kips 2.00 52.0 kips
For the end bolts 0.75 Rn 0.75 104 kips
78.0 kips For the interior bolts v rn 101 kips per inch of thickness Rn 101 kips/in. 0.750 in.
75.8 kips
For the interior bolts rn 67.4 kips per inch of thickness v Rn 67.4 kips/in. 0.750 in. 50.6 kips For the 4 bolts Rn 2 52.0 kips 2 50.6 kips 205 kips
For the 4 bolts
Rn 2 78.0 kips 2 75.8 kips 308 kips
Tensile yielding of the tee stem From AISC Specification Section J4.1(a), the nominal tensile yield strength of the tee stem is: Rn = Fy Ag where Fy = Fyp
(Spec. Eq. J4-1)
= 36 ksi Ag = Wts = 9.00 in. ( 0.750 in. = 6.75 in.
)
2
and therefore
(
Rn = 36 ksi 6.75 in.2
)
= 243 kips From AISC Specification Section J4.1(a), the available tensile yield strength of the tee stem is: LRFD
ASD
0.90
Rn 0.90 243 kips
219 kips
60 / HOLLOW STRUCTURAL SECTION CONNECTIONS / AISC DESIGN GUIDE 24
1.67 Rn 243 kips 1.67 146 kips