BSc. Architecture: Steel and Wood Structures Lecture Quiz

Steel structures are assembly of structural steel shapes joined together by means of ______, bolted or welded connections according to specification/standard.

Steel is an alloy made by combining iron and other elements, the most common of these being ______.

In general, there are two procedures by which steel shapes can be formed; Hot-rolled *temperature above recrystallization temperature (that temperature at which the crystal lattice structure of the metal becomes reoriented.) *by rolling hot steel in semi solid state. Cold-formed *temperature below recrystallization temperature * rolling sheets from sheets, plates or flats in rolling machines or by ______ breaking.

Structural Steel Based on carbon content Low Carbon Steel $c extless 0.15 ext{%}$ Mild Steel $c = 0.15 ext{%} - 0.29 ext{%}$ Medium Carbon Steel $c = 0.30 ext{%} - 0.59 ext{%}$ High Carbon Steel $c = 0.60 ext{%} - 1.70 ext{%}$ Increase in carbon content Increase ______ Decrease ductility.

Cold-formed steel (CFS) goods are created by the working of thin steel sheets using stamping, rolling or presses to deform the steel sheets into a proper product which are usable. Thicknesses usually having ______ to 7 mm

Structural steel is a category of steel used for making construction materials in a variety of shapes. Structural steel shapes, sizes, chemical composition, mechanical properties such as strengths, storage practices, etc., are regulated by standards in most industrialized countries. ______ sections

HSS-Shape (Hollow structural section): also known as SHS /structural hollow section and including square, rectangular and circular (pipe). Steel Tubes/circular hollow steel: Inner diameter varying from 15 to 150mm. Thickness varying from 2 to 5.4mm. Efficient structural sections for ______ and trusses

I – Sections Strongest and most economical of all sections Used as columns, beams, purlins in trusses and grillage foundations. Most structural steel shapes, such as I-beams are very stiff in respect to their cross-sectional area and thus can support a high load without. ______ sections