Steel framing systems typically refers to a building technique with a “skeleton frame” of vertical steel columns and horizontal I-beams, created in an exceedingly rectangular grid to support the floors, roof and walls of a building that are all hooked up to the frame. the event of this system created the development of the building possible.
The rolled steel “profile” or cross section of steel columns takes the form of the letter “I”. the 2 wide flanges of a column are thicker and wider than the flanges on a beam, to higher stand up to compressive stress within the structure. sq. and spherical hollow sections of steel can even be used, typically stuffed with concrete. Steel beams ar connected to the columns with bolts and rib fasteners, and traditionally connected by rivets. The central “web” of the steel I-beams is commonly wider than a column net to resist the upper bending moments that occur in beams.
Wide sheets of steel deck may be accustomed cowl the highest of the steel frame as a “form” or furrowed mildew, below a thick layer of concrete and steel reinforcing bars. Another well-liked different may be a floor of formed concrete flooring units with some sort of concrete topping. typically in workplace buildings the ultimate floor surface is provided by some sort of raised flooring system with the void between the walking surface and therefore the structural floor being employed for cables and air handling ducts.
The frame has to be shielded from hearth as a result of steel softens at warmth and this may cause the building to part collapse. within the case of the columns this can be typically done by encasing it in some sort of hearth resistant structure like masonry, concrete or wallboard. The beams is also cased in concrete, wallboard or sprayed with a coating to insulate it from the warmth of the fireplace or it may be protected by a hearth resistant ceiling construction.
The exterior “skin” of the building is anchored to the frame employing a kind of construction techniques and following an enormous kind of branch of knowledge designs. Bricks, stone, ferro concrete, branch of knowledge glass, sheet and easily paint are accustomed cowl the frame to guard the steel from the weather.