INFO-GRAPH INTERPRETATION




VARIOUS STRUCTURAL STEEL SHAPES


  

   I-SECTIONS         HSS        CHANNEL     ANGLE CLEAT     METAL       PLATE            

                      TUBE       [-SHAPED    L-SHAPED        6 mm -
  RESISTS SHEAR &     MULTI                  ANGLED          1/4"
  BENDING MOMENT      DIRECTION              CROSS              THICKNESS           LOADS                  SECTION 
                                          
THE ABOVE ILLUSTRATION IS A DEPICTION OF HOW STEEL USAGE HAS EVOLVED

FROM BEING USED AS A SHEATHING MATERIAL FOR FIRE RESISTANCE ,STEEL
HAS GROWN TO SERVE MANY OTHER PURPOSES AND NOW IS USED TO CREATE ICONIC MEGA-STRUCTURES.  EACH SKETCH POINTED OUT IN ORDER BELOW
  • AN IRON SHEATH TO COVER TIMBER BEAMS AND PROTECT A MILL AT DERBY FROM FIRE.
  • THE FIRST FULL IRON FRAMED MILL.
  • CIRCULAR CUT SECTION CAST IRON COLUMNS REDUCED COST BY 30%.
  • THE FIRST CAST IRON FACADE.
  • 1871 - FIRE AT CHICAGO CHANGED PEOPLE'S PERSPECTIVE OF FIRE SAFETY AND NEW BUILDING STANDARDS WERE PUT FORWARD [USE BRICK AND STONE] A SECOND HIT IN 1874 INSURED STEEL PRODUCTION AND MANIFESTATION IN STRUCTURAL SECTORS.
  • LOAD BEARING BEAMS AND COLUMNS FACILITATED BIG EXTERIOR OPENINGS.
  • THE FIRST ALL-STEEL FRAME BUILDING.
  • THE FIRST FULLY INTEGRATED STEEL STRUCTURE MADE TO RESIST WIND LOADS MARKED THE START OF THE  RACE FOR THE TALLEST SKYSCRAPER.
  •  FIRST EXPOSURE OF STRUCTURAL FRAMEWORK - BRONZE-TONED I-BEAMS
  • TRUSSED TUBE BRACING SYSTEM REDUCED MATERIAL USAGE BY 30%.
  • WIND LOADS RESISTED BY SHELL & REMAINING LOAD CARRIED BY CORE [HEAVY STEEL BOX COLUMNS FORMED STIFF LATTICE]
  • THE FIRST USE OF BUNDLED TUBE SYSTEM
  • DIA-GRID FRAMING SYSTEM [COMBINING HIGH TENSILE + COMPRESSIVE STRENGTH]  THE MARRIAGE OF COLUMNS+DIAGONALS+BRACING.

THIS ILLUSTRATION SHOWS HOW THE BUILT FORM EVOLVED 
  

FROM SHORT-WHOLE STATURE TO LEAN-DEFINED STATURE AND NOW AWAITING UNEXPECTED ICONIC FORMS THAT REDEFINE STEEL USAGE WITH EVERY MOVE.

-----------------------------


-Veronica

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