Multi-span greenhouse structural design enables large-scale crop production under controlled conditions. Connected gutter-connected spans share structural components, reducing costs. Steel frames provide strength for wide spans exceeding 30 meters. Foundation systems anchor structures against wind and snow loads. Truss designs distribute loads efficiently. Corrosion-resistant hot-dip galvanizing extends service life. Custom configurations accommodate various crop requirements. Expansion joints allow for thermal movement. Integral gutter systems collect rainwater. Automated screens provide shade and insulation.