Steel Buildings Nationwide is the leading source for steel buildings in Saint Charles MO! We carry many different sizes and styles to choose from. We can custom design a steel buildings to meet your needs! Saint Charles Missouri steel buildings are designed to meet mother nature's extreme forces by our state certified engineers. For the areas requiring building permits we provide engineered drawings for our certified units(additional costs may apply). Try our 3D Builder. Our steel buildings also offer different gauges of steel framing: 14 ga standard or 12 style="color:rgb(255, 255, 255);">steel buildings to meet your needs! Saint Charles Missouri steel buildings are designed to meet mother nature's extreme forces by our state certified engineers. For the areas requiring building permits we provide engineered drawings for our certified units(additional costs may apply). Try our 3D Builder. Our steel buildings also offer different gauges of steel framing: 14 ga standard or 12 standard or 12 style="color:rgb(255, 255, 255);">steel buildings to meet your needs! Saint Charles Missouri steel buildings are designed to meet mother nature's extreme forces by our state certified engineers. For the areas requiring building permits we provide engineered drawings for our certified units(additional costs may apply). Try our 3D Builder. Our steel buildings also offer different gauges of steel framing: 14 ga standard or 12 nits(additional costs may apply). Try our 3D Builder. Our steel buildings also offer different gauges of steel framing: 14 ga standard or 12