Compression and tension members with segments connected with lacing bars should be detailed with stay plates. Lacing and perforated cover plates should be designed for the lateral shear force normal to the member. The total shear force should include forces due to the weight of the member, other imposed forces and for compression members, 2.5% of the compressive axial force; but not less than AFy /150 where A = member area required for axial compression (in2) and Fy = yield point for material (psi). See AREMA Manual, Chapter 15, Section 1.6 for additional recommendations for laced members.
