Structural safety and stability are critically important to the transportation industry, as countless scores of drivers and passengers depend on the safety of these elements to get where they are going day-to-day.
Particularly important to bus stops, rail stations, overhead signage, and of course, bridge substructures, structural stability cannot be maintained if the structure has been weakened by the ravages of corrosion. If an overhead structure is compromised by rust deterioration, it could potentially collapse onto the passengers below. Similarly, if the substructure of a bridge is compromised, it could end in tragedy. Hot-dip galvanized steel pieces will stand strong against corrosion, preserving the structural integrity of these overhead elements and protecting travelers.
Another potential hazard for bridges or other transportation elements that make use of concrete is the danger of spalling. Over time, concrete can begin to deteriorate due to the corrosion of non-galvanized rebar within, making falling chunks of concrete a danger for pedestrians, traffic, or passengers. Hot-dip galvanized reinforcing steel eliminates the risk of spalling, as explained in the performance in concrete section.
Hot-dip galvanized steel can also provide advantages in areas of seismic activity. Steel bridges are more seismic resistant than concrete ones due to the ductile, flexible nature of the steel elements, and the high strength-to-weight ratio. Structural steel helps minimize weight, which reduces inertia effects under seismic loading.
Able to bend within reason without breaking, the tensile strength of hot-dip galvanized steel can protect a bridge from damage or even total failure during seismic activity, protecting both taxpayer investment, and more importantly, the cars and people utilizing the structure. Contrarily, the rigidity of concrete can cause cracking and crumbling under duress. A hot-dip galvanized steel bridge protects the structure from both corrosion and the potentially devastating effects of seismic damage.
Inspection of exposed galvanized steel is easy, requiring only a visual check or coating thickness measurement to ascertain corrosion-related safety. This means stations, bridges, highway products, and more can be safety checked quickly and efficiently. This ease of inspection is also safer for the inspectors themselves, as they will not be required to shoulder the risks of trying to briefly stop traffic or access difficult to reach areas around moving traffic.
In all reaches of transportation infrastructure, anchor rods and bolts, nuts, stakes, washers, and other fasteners are used. These pieces may hold a train track steady, or keep signs or lighting fixtures standing upright and so the integrity of these pieces is critical to safe use of transportation. However, these pieces are constantly exposed to corrosive elements that can weaken their performance, or even deteriorate them to the point of failure. Hot-dip galvanizing fasteners provides them with superior corrosion protection that will keep them uncorroded and holding on tight.