Risa Tower 4.7

What's New in Version 5.3
Automatic selection of most favorable treatments of feed lines mounted in clusters (TIA-222-G, 2.6.9.5). All tower faces are considered simultaneously and the minimum effective projected area is selected for each cluster.
Optional calculation of polygonal monopoles strength based on a tentative approval (for Addendum No. 2 to TIA-222-G) by the TR-14.7 TIA Subcommittee.
Candelabra import function overhaul and improvement. It is now possible to create candelabra models visually in RISA-3D and import them into RISATower.
Bolted connections: design enhancements and compliance with Addendum No. 1 to the TIA-222-G Standard.
User-tagging of input file records
Designed specifically for the telecommunications industry, RISATower automates much of the tower analysis and design required by the TIA/EIA 222 Standard.

RISATower can analyze and design 3- and 4-sided guyed and self-supporting towers and either round or tapered ground mounted poles with or without guys. RISATower contains unique features such as True Cable behavior, hog rod take-up, foundation stiffness and much more. RISATower may export complete model files to RISA-3D for added analysis and design flexibility.

Why RISATower Stands Apart:
Complete Standards Support
The program analyzes towers using the TIA-222-G (2005) standard or any of the previous TIA/EIA standards back to RS-222 (1959). Steel design is checked using the AISC ASD 9th Edition or the AISC LRFD specifications.

Powerful Analysis & Design
RISATower’s rapid model creation tools, 3-D frame-truss models and automatic wind force and ice loading generation capabilities are just a few of the features that make this industry-standard software the premier choice for all types of communication towers.

Top-notch Graphical Presentation
Graphical display of tower geometry, appurtenances, internal forces, stresses and displacements are created automatically.

Base Tower Types Supported
Three or four sided guyed towers
Three or four sided self-supporting towers
Ground mounted monopoles (round stepped, round tapered, 18-, 16-, 12-, and 8-sided)
Three or four sided guyed monopoles
Upper Antenna Types Supported
Three or four sided latticed poles
Tubular poles (round stepped, round tapered, 18-, 16-, 12-, and 8-sided)
Candelabra tops
Analysis and Design
Automatic generation of nodes and elements for 3D frame-truss, truss, or beam-column tower models
Linear and non-linear (P-delta, cable behavior) finite element analysis (FEA)
Three modes available: analysis only, analysis and members check, or analysis and lowest weight-optimized design
Automatic determination of pressure coefficients, wind pressures, ice loads and resulting forces on the tower
Optimized feed line Effective Projected Area calculations to minimize required wind loading
Automatic calculation of feed lines shielding
Calculation of center of pressure due to offset feed lines
Automatic calculation of K-factors for solid round and single angle members
Optional inner feed line support tower
Check or design of bolts in tower members
Export to RISA-3D for additional analysis and design options
Data Entry
Powerful, easy to use spreadsheets for quick model generation and input verification
Adaptable three-level structure definition: base tower, upper antenna structure, and top antenna pole
Guy cables generation with varying radii and guy anchor elevations
Feedlines, discrete loads (loads from appurtenances), dishes, and user defined loads specification anywhere on the tower
Comprehensive databases of structural shapes, assemblies, feed lines, dishes, and appurtenances, with a powerful Database Manager, allowing full customization and synchronization across networks
Flexible units selection: US Customary (decimal or architectural notation) or SI Metric, with user-controlled display precision
Graphical User Interface
Tabbed, dynamically updated display pages provide instant input verification for structural components and appurtenances
Tower geometry page with zoom, pan and rotate model capabilities. The structure may be viewed in both unloaded and deflected shape. Individual member properties such as shape and element number can be displayed
Material list page showing member sizes, weights, and graphical display of the tower section with reactions and tables of user defined components. User defined notes may also be added to this view
Plot plan page showing boundary of tower and acreage required for 15’ clearance
Leg compression plots also displaying the leg compression and tension capacity of the tower
Mast shear and moment plots
Detailed tower deflection, tilt and twist diagrams
Guy anchor plots showing guy forces and guy anchor reactions (for guyed towers only)
Feedline plot. Displays feedlines in each of the faces of the tower
Stress plot. Graphically displays the stress condition of members in each face of the tower
Wind pressure and ice thickness diagrams
Base plate and anchor bolts views (monopoles only)