T , Y, X Connections with Rectangular Chord

American Codes

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Forces in Chord Member N_u0 = kips M_u0 = in.kips

Review Report

Web Member Capacity kips

Web Member b₁ = in. t₁ = in. h₁ = in.

Chord Member b₀ = in. t₀ = in. h₀ = in.

General Information F_y = ksi j = f_r = X connection

J.A. Packer, J.E. Henderson, Hollow Structural Section Connections and Trusses - A Design Guide AISC Steel Design Guide 24 Hollow Structural Section Connections Reference: T, Y , X Connections with Rectangular Chord Notes: Flange Plate Reinforcement: B_p - nearly the flat width of the chord face, L_p - length of reinforcement plate if web member under tension: L_p >= h₁/sin(j) +[ B_p (B_p - b₁) ]; if under compression, full strength connection can be satisfied as following: L_p >= 2 b₀, t_p >= 4 t₁ - t₀ Weld throat size >= wall thickness of the adjacent web members Recheck N_ri = F_yp. t_p² [ 2 n_p / sin(j) + 4 (1 -b_p)^0.5 ] / [(1 -b_p). sin(j) ], b_p = b₁/B_p <= 0.85, n_p = h₁/B_p Drill a small hole in the stiffening plate under a web member to allow entrapped air to escape prior to closing the weld. This will prevent the expanding heated air from causing voids in the closing weld Side Plate Reinforcement: B_p - at least the height of the chord, L_p - length of reinforcement plate L_p >= 1.5 b₁/sin(j) Recheck side wall shear failure by replacing t₀ with t₀+t_p