英语翻译
Gutters and downspouts can be easily obtained as standard household construction materials,or they can be specifically designed to enhance a building facade and maximize the amount of harvested rainfall.The materials for gutters and downspouts range from vinyl
and galvanized steel to aluminum,copper,and stainless steel.Gutters should typically be square,rectangular,or half round in shape and,at a minimum,5 or 6 inches wide.They should have an outer edge higher than the roof-side edge,have splash guards at roof valleys,slope towards downspouts at one-sixteenth to one-quarter inch per 10-foot length of gutter,and be installed per manufacturer’s guidelines for hangers and connection points (approximately one bracket every 30 inches).