Unformatted text preview: shear force V that can be supported by the box beam based on the shear capacity of the nailed connections. 9.51 A W310 × 60 steel beam (see Appendix B) in an existing structure is to be strengthened by adding a 250 mm wide by 16 mm thick cover plate to its lower flange, as shown. The cover plate is attached to the lower flange by pairs of 24-mm-diameter bolts spaced at intervals of s along the beam span. Bending occurs about the z centroidal axis. (a) If the allowable bolt shear stress is 96 MPa, determine the maximum bolt spacing interval s required to support an internal shear force in the beam of V = 50 kN. (b) If the allowable bending stress is 150 MPa, determine the allowable bending moment for the existing W310 × 60 shape, the allowable bending moment for the W310 × 60 with the added cover plate, and the percentage increase in moment capacity that is gained by adding the cover plate. . For practice 9.30 9.37 9.53...
View Full Document
- Winter '09
- Shear Stress, Shear strength, allowable bending moment, 16 mm, 5-ft