The structure may consist of standard hot rolled sectins, cold formed (light gauge) sections, composite sections or any combination of sections or any combination of section types. Whilst the program includes tables of standard section types, the user may also define sections of his own by inputting basic dimensions. The program calculates all properties required for the design, e.g. section area, moments of inertia, warping constant, etc. Tapered or slender sections may defined.

A very powerful feature of the program allows the user to constrain the automatic member selection to achieve an economic but practical design. He may specify limits on section sizes, the members that are to be identical, the permitted section types, etc. Data input is fully graphical and at any stage the user may review such items as the steel grade, allowable deflection, intermediate supports etc, and revise them as he wishes.

In steel structures, deformations often govern the design. In STEEL, the user may define different deflection criteria for different beams or different loading combinations. A powerful optimization facility enables the user to limit the deflection of certain nodes or the drift between adjacent nodes. The program selects the sections that give the most economic solution according to the user's constraints.

STEEL offers the user a variety of freatures that save time when reviewing results. A color - coded graphic display of each member capacity gives an instant indication of structural performance. Brief tabular results give an overview for the whole structure and may be sorted by section type if required. Detailed results for selected members include all factors and code formulas used by the program.

Composite Section Design
Selection of optimal sections

  • Calculation of shear studs required
  • Partial shear connection
  • Design for wet concrete condition
  • Calculation of short term and long term deflections
  • Option to account for negative moment reinforcement

Cold Formed Sections
Library of standard sections

  • User defined sections for a variety of types
  • New section types may be added to the library by defining the basic dimensions only
  • Design in accordance with AISI- ASD and LRFD codes
  • Calculation of torsional flexural buckling for LTB
  • Design for a reduced section according to the web thickness/depth ratio
  • Hot rolled sections may be used in the same model

Sway, Drift and Deflection Control
Optimization of within a sway, drift or deflection limit

  • Different cost factors may be assigned to various section types or member groups
  • Selection of the sections may be subject to user constraints
  • The model may also include concrete members

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