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l. ' 1 <br /> ISE, Incoraorated <br /> Structural Engineers Telecommunications&Industrial Design , <br /> PO Box 50039•Phoenix,AHzona•85076•Office:(602)403-8614•Fax:(623)321-1283•www.IS -INC.biz <br /> Antenna Forces— <br /> Cf= 1.0 for flat panel <br /> SBCHH-1 D90B, EPA= (54.8" X 13.8") / 144 = 5.25 SF <br /> Wind Force, FW= (5.25 SF)(33.15 psfl = 174# <br /> Weight= 39.5# <br /> ET-X-WM-18-65-8P, EPA= (61" X 12") / 144 = 5.08 SF <br /> Wind Force, FW= (5.08 SF)(33.15 psfl = 169# <br /> Weight = 36.4# <br /> RRH C2-A, EPA = (23.7" X 15.7") / 144 = 2.58 SF <br /> Wind Force, FW= (2.58 SF)(33.15 psfl = 86# <br /> Weight = 56# <br /> RRH P4, EPA = (23.8° X 13.8")/ 144 = 2.28 SF <br /> Wind Force, FW= (2.28 SF)(33.15 psfl = 76# <br /> Weight= 60# <br /> RRHV3, EPA = (18.6" X15.5")/ 144 = 2.00SF <br /> Wind Force, FW= (2.00 SF)(33.15 ps� = 67# <br /> Weight = 59.5# <br /> VHLP2-18 MW Dish, EPA = (25.92�/4) / 144 = 3.66 SF <br /> Wind Force, FW= (3.66 SF)(33.15 psfl = 122# <br /> Weight= 25# <br /> The handrail system was analyzed using Risa-3D, a general p rpose 3-dimensional <br /> structural analysis software. The software was used to calculate me ber stresses and joint <br /> reactions under dead loads and wind loads as prescribed by A A-D100-11, and to <br /> perform AISC steel code checks (ASD). Risa-3D output is attached. <br /> Critical Post Reactions at Tank Connection per Risa-3D output: <br /> Axial, Fa = 1844# Shear, F�= 1329# <br /> Post connection to tank roof with a 6" Sq. X 3/8" th. steel plate <br /> Tank bearing, Fb�y = 1844/ (62) = 51.2 psi OK <br /> Plate welded to tank with 3/16" fillet weld around 24" perimeter <br /> Force in weld, FW= [18442 + 13292]'�/24° = 95#/in <br /> 7 <br />