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  2. Steel grades - Wikipedia

    en.wikipedia.org/wiki/Steel_grades

    EN 10027-1 steel grade designation system. European standard steel grade names fall into two categories: [1] Steel specified by purpose of use and mechanical properties. Steel specified by chemical composition. The inclusion of a letter 'G' before the code indicates the steel is specified in the form of a casting.

  3. Hollow structural section - Wikipedia

    en.wikipedia.org/wiki/Hollow_structural_section

    In the recent past, HSS was commonly available in mild steel, such as A500 grade B. Today, HSS is commonly available in mild steel, A500 grade C. Other steel grades available for HSS are A847 (weathering steel), A1065 (large sections up to 50 inch sq made with SAW process), and recently approved A1085 (higher strength, tighter tolerances than ...

  4. ISO 657 - Wikipedia

    en.wikipedia.org/wiki/ISO_657

    ISO 657 (hot-rolled steel sections) is an ISO standard that specifies the tolerances for hot-finished circular, square and rectangular structural hollow sections and gives the dimensions and sectional properties for a range of standard sizes.

  5. Structural steel - Wikipedia

    en.wikipedia.org/wiki/Structural_steel

    For steel structures the main harmonized standards are: Steel sections and plate – EN 10025-1; Hollow sections – EN 10219-1 and EN 10210-1; Pre-loadable bolts – EN 14399-1; Non-preloadable bolts – EN 15048-1; Fabricated steel – EN 1090 −1; The standard that covers CE Marking of structural steelwork is EN 1090-1. The standard has ...

  6. Purlin - Wikipedia

    en.wikipedia.org/wiki/Purlin

    A purlin plate in wood construction is also called an "arcade plate" in European English, [1] "under purlin", and "principal purlin". The term plate means a major, horizontal, supporting timber. Purlin plates are beams which support the mid-span of rafters and are supported by posts. By supporting the rafters they allow longer spans than the ...

  7. SAE steel grades - Wikipedia

    en.wikipedia.org/wiki/SAE_steel_grades

    The SAE steel grades system is a standard alloy numbering system (SAE J1086 – Numbering Metals and Alloys) for steel grades maintained by SAE International. In the 1930s and 1940s, the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels.

  8. Fed Chair Powell says he won't resign if Trump asks him to ...

    www.aol.com/fed-chair-powell-says-wont-202841242...

    Federal Reserve Chair Jerome Powell said he won't step down if President-elect Donald Trump, who has previously criticized Powell's performance, asks him to resign.

  9. Lysaght (Australian company) - Wikipedia

    en.wikipedia.org/wiki/Lysaght_(Australian_company)

    The firm exported to many countries including Australia and South America. By 1880 Lysaghts was exporting enough corrugated iron to Australia to establish a central selling agency in Melbourne. [1] Utilizing this demand, John Lysaght set up Victoria Galvanised Iron and Wire Company in order to get around import restrictions. [2]