spFrame Features

Technical Features

  • Two- and three-dimensional frames and trusses
  • Second order analysis for P-D effects and tension-only members
  • Inclined supports
  • Linear and rotational springs
  • Hinged, fixed, and semi-rigid member ends
  • Shear deformations
  • Member rigid-end offsets
  • Rigid diaphragms
  • Non-prismatic members
  • Point, uniform, triangular, concentrated, and temperature loads
  • Local, global, or projected application of loads
  • Cracked section properties

Program Features

  • Practically unlimited number of joints, members, loads, load cases, load combinations, and other entries
  • User-selected units for every input and output parameter. Units can be changed at any time while inputting data or after solving a problem
  • Member grouping
  • Input and output kept in memory for speed; option of saving all data on disk
  • All program options and commands have equivalent push-buttons for fast and easy access
  • All entries, including joints and members, permit alphanumeric labels (instead of numbers)
  • Automatic generation of joints and members
  • Input dialog boxes have clear labels and all relevant units displayed at all times
  • Stiffness matrix method of solution
  • Ability to save the stiffness matrices
  • Internal automatic model optimization
  • Checking of input errors, inconsistencies, and structural stability
  • Local processing: segmental forces, moments, and displacements at 100 segments per member
  • Local processing for user-selected members
  • Local processing for user-selected load combinations
  • True multitasking while running solver
  • Ability to pause or abort solver at any time

File Features

  • Ability to import and export AutoCAD files (DXF)
  • Automatic file saving (AutoSave) while inputting data
  • Ability to save input files in binary and text format
  • Ability to copy graphics to the Windows clipboard
  • Ability to save material properties, section properties, nonprismatic member properties, and load entries in library files that can be shared by all PCA-Frame input files
  • Built-in file compression utility

Graphical Interface Features

  • Fast graphical interface that displays the model geometry at all times for verification
  • Graphic image displaying joints, members and their labels, member rigid-end offsets, joint fixities (supports), and member orientation
  • Ability to superimpose applied loads, deflected shape, and resulting shear and moment diagrams on the modeled structure
  • Ability to zoom, translate (pan), or rotate the graphical image
  • Ability to display portions of the graphical image for a clearer presentation
  • Ability to obtain member information by simply clicking on the member

General Features

  • English (in.-lb) or SI (metric) units
  • Online help
  • User-controlled screen color settings
  • Ability to save defaults and settings for future input sessions
  • Auto-input feature that "walks" you through the input process