Ultimate moment capacity about major axis Ωy (kN/m) 0.0297 0.0294 0.1765 0.0312 0.2669 0.2971 0.4456 -1.8740ĥ | Purlin design strengths Major axis bending Case 1 : Yielding Nominal moment capacityĬase 2 : Lateral-torsional buckling Moment of inertia of one flange about y-axis If Warping constant Cw Distance between flange centroids ho Torsional constant modification factor c Radius of gyration of section effective in lateral torsional buckling about y-axis rts Torsional constant J Critical length for compactness Lp Critical length for slenderness Lr Effective length about the x-axis Lb Moment gradient factor Cb Critical bending stress Fcr Nominal moment capacity Mnģ4,328.13 mm⁴ 268,188,477 mm⁶ 123.50 mm 1.80 21.39 307.13 1,180.45 2,419.46 3,000.00 1.14 135.08 2.31 Roof weight Ceiling MEPF Purlin self-weight Dead load Live load Roof live load Wind load Iy 75062.63 42622.81 42622.81 34058.14 34058.14 228424.53ģ 8 degrees Distance between rafters/trusses L Length of overhang Lc Spacing of purlins s Location of sagrods (1 = no sagrod, 2 = sagrods midpoints, 3 = sagrods third points) sagrods Roof angle θ 3 | Material properties Yield strength Ultimate strength Modulus of elasticity Moment of inertia about x-axis Elastic modulus about x-axis Radius of gyration about x-axis Plastic modulus about x-axis Moment of inertia about y-axis Elastic modulus about y-axis Radius of gyration about y-axis Location of plastic neutral axis from left end Plastic modulus about y-axisĢ28,424.53 5,162.56 23.62 38.13 10,926.23 (1/3)*b*t³ 140.63 69.75 69.75 13.50 13.50 307.13Ĭross-section area Linear weight x-coordinate of the section centroid y-coordinate of the section centroid
0 kommentar(er)
