Mark your calendar for the next AAMI Exchange. It’s the premier health technology event that delivers new opportunities to exchange ideas, expand networks, and experience new technologies. The margins for each of the four sides of the sheet should be specified. If close tolerances on the margins are necessary this must be clearly shown. ... Heavy gauge ... It's often used for various construction, art and craft projects, DIY projects, electrical applications, research and development and much more. 20 Gauge copper can be cut with heavy duty snips or sheet metal shears. While you can bend this copper with your hands, to get a sharp 90 degree bend, you must use a sheet metal brake. All of our sheet steel is available in various thickness and sizes, as well as custom sizes to meet each individual requirements. Our metal sheets are available to order online at metals4U or you can phone our customer service team on 01937 534318. When sheet steel is galvanised it has a protective zinc coating that helps protect against corrosion. Assume one support is a slider. Check the horizontal deflection at the slider and assume half goes into each wall. There is no horizontal reaction unless you model in the stiffness of the posts and then they would have to be cantilevering off of the foundation for any horizontal force to develop.