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, � � � ; J <br /> � <br /> ' i ! 1 , i ! <br /> � I � <br /> � ' � ! I <br /> � � 3,�. ANALYSIS METHODOLOGY AND LO.ADING Ct�NDITIONS ' ' <br /> ; i . ; ,� <br /> � <br /> ' "�he subject s�ucture is analyzed as a three dimensional space truss by use of the Weisman ; ; <br /> Cansultants fmite element structural analysxs computer program. In th�s analys3s the exact <br /> � <br /> , structure geometry is input t�the computer prograrn in three dimensional space. Structural � 3 <br /> connection�paints, or node points, are connected to each other b y structural eiements ar � <br /> �na t hema tiaa l mo de ls o f t he ac t ua l tow er s t r u c t u r a l c o m p a n e n t s. I n t h i s m a n n e r a n e x a c t ; , <br /> , t;hree dimensianal fuu�e element mathematical model of the structure is prepared. Only the � _ <br /> ��rimary stnictural components are included in the mathematical model. Ancillary,secondary , � <br /> and redundant members, if present, are added to the structure as ancillary weight and wind ; <br /> � � 3 <br /> loading. , <br /> E � � ; ; <br /> � <br /> , The structwral model input data consists af averall tower geometry; structural member sizes ' <br /> and propert.ies; structural member load carrying capacities; and specific loading cases. : <br /> ' j; � : <br /> ' The computer output consists of reactians at the tower anchorage paints , structural member � � <br /> loads,taw�r deflection and a comparisan check of the structural member loads to the AISC <br /> � ;(Ameriean��Institute of Steei Construc�ian} allowable loads for each structural member. , <br /> ( �� i ; <br /> � �Loading of the structure is achieved by distributing the eomputed dead weight and wind ; � <br /> � ;loads to the�structural model at the appropriate node points. � <br /> � <br /> � � ; , <br /> � � <br /> !The tawer is analyzed with the wind blowing from three directions;Zero Degree Wind(wind ' <br /> , j in�o a tawer;apex}, 90 Degree Wind(wind parallel to a face)and 60 Degree Wind�wind intc� ' � <br /> j a tawer face}. Wind load on the structure as weli as the antennas, co�lines and all ancillary , <br /> ' i items are computed in accordance with the TIAIEIA-222-F Standard (March 1996}. ; , <br /> 4 � l � , <br /> �� � � <br /> � � � � �� <br /> ` � , <br /> � ; � <br /> a � ; <br /> � � <br /> � ` ' j <br /> � ; � � <br /> � ! . � <br /> ' �i � , <br /> ' � ' � 1 <br /> I � { <br /> � �� : <br /> � � �, � � <br /> o , <br /> � � , � <br /> �' � -3- ; , <br /> , � j ' , Zephyrhitis-APT • ' <br /> " � � 190 Ft. Self Supporting Tower i , <br /> I <br /> � P I; � Zephyrhills,Florida � <br /> t ! � <br /> � { ; <br /> , � � ' <br /> d i <br /> I <br /> I � � � � <br /> � � <br />