The materials of steel structure must adopt the materials preventing solar radiation and chemical attack, which applies not only to their strength, but also to their appearances and colors. Many building materials are easy to discolour after years of exposure to the sun's ultraviolet (UV) rays. Therefore those materials used in construction must be UV stable. However, materials that are only used indoors need not be UV stable.
Concrete can lose its strength over time if chemicals seep into it via rainwater or atmospheric pollution. It is especially susceptible to chloride attack. And steel can rust or corrode over time. Rusting has a major impact on the load carrying ability of a member and can quickly make a structural member useless.
They must have the high strength. Every part of a building is subject to some level of force, and each part must be capable of carrying the loads that fall on it. Many building components have other components attached to them, like structural steel , railings, pipes, light fixtures, ducts, and wall shelves. They must be able to hold on to and retain these attachments. Building materials can be rated for compressive strength (think of bricks pressing down on each other), or tensile strength (like the force you exert on the chain of a swing when you stand on it), or both.So it is very important for mobile home manufacturers to choose the structural steel materials.
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