Monopoles - Current Design Issues

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F'y / FyCompact Limit0.759Compact Limit1.17TIA-222-G Table 4-81.31.21.11.00.90.80.71.27 1.27 1.27 1.251.221.182010 ASCE / SEI Structures Congress | Orlando, FLNon-Building Structures | May 15, 2010 | D. HawkinsDiscussion of Current Issues Related to Steel Telecommunications Monopole Structures1.141.101.00 1.00 1.00 1.00 1.00 1.00 1.00 1.001.060.96(18-sided Polygon)1.020.92TIA-222-G-2 (Addendum 2)TIA-222-G and G-10.990.890.950.850.910.820.870.780.830.750.800.720.76 0.740.60.68 0.67© Copyright 2010 by Paul J. Ford and Company, all rights reserved.(Fy/E) 1/2 (w/t)12 of 37
Factored Flexural Strength: Shaft Moment Capacity,Φ f Mn (ft-kips)Table 4-8: Effective Yield Stress, ø f F‟y2010 ASCE / SEI Structures Congress | Orlando, FLNon-Building Structures | May 15, 2010 | D. HawkinsDiscussion of Current Issues Related to Steel Telecommunications Monopole StructuresFactored Flexural Strength (Shaft Moment Capacity) ChartComparison of TIA-222-G and G-1 (Addendum 1) with TIA-222-G-2 (Addendum 2)9,000 Example: Shaft 48” Diam; 18-Sided Polygon; Fy=65 ksi 808,000707,0006,0005,0004,0003,0002,0001,000TIA-222-G Factored Flexural Strength, ΦMnTIA-222-G-2 Factored Flexural Strength, ΦMnTIA-222-G Table 4-8: Effective Yield Stress, Φf F'y60504030201000.125 0.188 0.250 0.313 0.375 0.438 0.500 0.563 0.625 0.688 0.750Shaft Wall Thickness, t (inches)© Copyright 2010 by Paul J. Ford and Company, all rights reserved.TIA-222-G-2 Table 4-8: Effective Yield Stress, Φf F'y013 of 37
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Monopoles - Current Design Issues

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