When choosing between these steel solutions, a basic principle for the designer should always be to keep it simple, and use solutions that are familiar not only to him/her as the designer, but will also be familiar to the fabricator and erector. Because of the different ways that steel beams can be configured, steel structures can be used to create flooring solutions that are competitive for spans ranging from 6 m to over 20 m. It can be used for single storey buildings, for which its efficiency has helped it reach over 95% market share, and it can be used for high rise buildings, for which its high strength to weight ratio makes it the only practical choice. The designer should also avoid over-specification, a trivial example being that corrosion protection is not needed when steel components are used in many internal environments. Keeping fabrication and construction in mind from the start will lead to the best possible solution. Some basic choices may have a significant impact on the ease, time and cost of both the fabrication and construction of a steel framed multi-storey building. It is therefore important that the designer follows a logical sequence, as going back and revisiting earlier design decisions, once other parties involved have moved on to designing other parts of the building or manufacturing components, can be disproportionately expensive. An implication of this, however, is that the design must be substantially complete before steelwork fabrication can begin. A characteristic of steel framed construction is that the constituent parts of the structure are manufactured off-site, with all the quality and speed-on-site benefits that are associated with such a form of construction. Many of these stages include aspects of engineering design. Information for construction - Drawings, specifications.Detailed design - Of the various components and elements.Scheme design - Looking at and developing options.Assembling the data and developing the brief - Understanding the site and context.Project formulation - What it’s for, why is it being proposed, where is it, etc.The stages of a construction project are presented in ISE publication ‘Structural design – the engineer’s role’ which may be broadly summarised as follows: 3.1 Step 1: Initial design considerations.
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