Metal roof provides increased wind resistance when compared to other roofing materials. This is because metal roofing systems use interlocking panels. The disadvantages of metal roofs include the noise created from rain hitting the roof, and, in snowy areas, the tendency of snow to easily fall off the roof and onto pedestrians or property. Originally, metal roofs were made of corrugated galvanized steel: a wrought iron–steel sheet was coated with zinc and then roll-formed into corrugated sheets. Another approach is to blend zinc, aluminum, and silicon-coated steel. These products are sold under various trade names like "Zincalume" or "Galvalume". The surface may
Her Secret Is Patience Her Secret Is Patience Her Secret Is Patience is a public art sculpture commission designed by artist Janet Echelman for the city of Phoenix. Its creation was the result of collaboration between the artist and a team of award-winning engineers, architects, planners, and fabricators. It is located downtown in the Civic Space Park across from the Walter Cronkite School of Journalism at Arizona State University. The sculpture consists of painted, galvanized steel; polyester twine netting; and colored lights. The piece cost $2.5 million. The title of the piece is a quote from Ralph Waldo Emerson and during construction it was