Description of shopping mall project：
Angola steel structure shopping center built the year of 2012，usage for supermarket and exhibition hall，general total area is 9088 square meters. The mid area is two floor supermarket，apartment is three floor，two side of the project is exhibition hall which adopt portal frame. The main structure of the project is adopt welded H steel column，two coats of mid-gray paint；75mm glass wool sandwich panel for roof，single steel sheet for wall surface with parapet around the wall，glass curtain as the wall of front and side while brick wall behind.
The characteristics of the steel structure:
1, the steel structure bearing capacity of light weight and high: belongs to the lightweight high strength material
2, steel is the most close to homogeneous isotropic body: the steel cut into small pieces Every small pieces will have roughly the same mechanical properties And performance is also roughly the same in every direction Is the foundation of solid mechanics
3, good plasticity and toughness of steel: under static load steel have good plastic deformation capability
4, steel has good welding performance: the so-called "good" refers to steel welding performance after the welding process and welding can preserve the integrity of the welding part is not cracking properties
5, steel structure has the characteristics of no leakage, no matter adopt welding, riveting or bolt connection of steel structure can be sealed and no leakage
6, factory, construction steel structure manufacture assembly: component is lighter Construction is convenient The site covers an area of small short construction period Also facilitate the demolition of reinforcement and reconstruction
7, poor corrosion resistance of steel, steel in high humidity, corrosion medium environment Easy to rust section diminishing Affect the service life of damaged the structure Thus the steel structure need regular maintenance.