Solution to Problem 597 | Spacing of Rivets or Bolts in Built-Up Beams Jhun Vert Thu, 04/23/2020 - 01:41 pm

Problem 597
A plate and angle girder similar to that shown in Fig. 5-32 is fabricated by riveting the short legs of four 125 × 75 × 13 mm angles to a web plate 1000 mm by 10 mm to form a section 1020 mm deep. Cover plates, each 300 mm × 10 mm, are then riveted to the flange angles making the overall height 1040 mm. The moment of inertia of the entire section about the NA is I = 4770 × 106 mm4. Using the allowable stresses specified in Illustrative Problem 591, determine the rivet pitch for 22-mm rivets, attaching the angles to the web plate at a section where V = 450 kN.
 

From Illustrative Problem 591

τ = 100 MPa shear stress
σb = 220 MPa bearing stress for single shear rivet
σb = 280 MPa bearing stress for double shear rivet

 

Built-up Girder from Plate and Angles