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Users of our PLS-CADD line design program can use TOWER to prepare allowable wind and weight span or interaction diagram files for optimum spotting. Towers shown rendered inside PLS-CADD (click to view larger image) TOWER provides a well defined XML output file and hooks that enable pre and post-processors to be connected to the program making it the ideal engine of your custom lattice tower analysis process. While TOWER is a stand-alone program it's open design allows it to easily interface with other programs. Optimum spotting performed with these interaction diagrams will result in a more economical solution than traditional spotting with just a single, or a few, wind and weight span pairs.
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In addition to these code checks, TOWER can calculate pairs of allowable wind and weight spans, or better yet, determine entire interaction diagrams between the allowable wind and weight spans.
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The TOWER manual describes how these checks are implemented and details the assumptions made. TOWER performs your choice of linear or exact nonlinear analysis. Members are checked against their ultimate strength in accordance with the code selected, with overstressed members easily identified graphically and in the output reports. The results of these checks are available in text reports, spreadsheets or color-coded graphics.ĪSCE-10, ECCS, EN50341 (CENELEC), AS 3995, BS 8100, and other international codes can be used to check the structure.
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Once TOWER has calculated the forces experienced in the different members and components of your structure, it compares them against automatically calculated code capacities for the code you have selected. This sophisticated analysis works even when the elements have large displacements, as is the case with the cross rope structure pictured above. TOWER models guys, cables and 2-part insulators as 3-d cable elements. Nonlinear analysis allows you to see P-Delta effects, to detect instabilities, accurately model tension-only members and perform reliable buckling checks.
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TOWER is capable of performing both linear and nonlinear analyses.
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For nearly 30 years of production use SAPS has proven to have one of the best nonlinear cable elements available anywhere. We designed SAPS specifically for solving complicated transmission line and guyed communication structure problems that other finite element programs couldn't. Even very large or complicated structures can be modeled in TOWER in just a few hours.Ī special version of our SAPS finite element analysis engine powers TOWER. TOWER takes advantage of symmetry in a structure in both joint and member generation, duplicating symmetrical joints and members about either axis, both axes and even in a triangular format found in many communication structures. A lattice structure modeled in TOWER is input as a collection of elements and the connections and bracing properties for each member. TOWER takes the pain out of finite element analysis. Simple and Powerful Finite Element Analysis Using libraries of standard components greatly enhances your productivity by significantly reducing the amount of input, which also reduces the chance of error. You can create these libraries yourself or use libraries provided by your suppliers. This gives you the power to create arbitrarily complex structures, including lattice box structures used in many older substations.Ĭomponent libraries define the size, weight, strength and other properties of your bolts, guys, members and other equipment.
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You are free to mix and match the various members and components at will. Insulators (clamp, strain, post, suspension, 2-parts)īuilding a structure is as simple as defining the overall outline geometry of the tower, selecting intermediate joints and then lacing members or other components up between these joints. TOWER structures are collections of the following components:Įquipment (user defined items like antennas, cable conduits, ladders etc.)