Quick Answer. The average spider can live anywhere from 1 to 3 years depending on its habitat and protection from predators. The garden spider, also known as an orb spider, lives about a year unless it finds a sheltered area away from extreme temperature changes, in which case it can live a few years. Keep Learning.
Protection against corrosion increases the life of metallic fuel tank and lines. Corrosion protection also avoids catastrophic results that could be caused by a release of product from the lines and tanks. Cathodic protection (CP) is an electrical method to avoid corrosion.
The UL guidelinesstate that when galvanized rigid steel conduit(GRC) or IMC are installed in concrete,supplementary corrosion protection is not required. UL states that when EMT is installed in a concrete slab on grade or above,supplementary corrosion protection is generally not required.