METHOD OF MANUFACTURING INTEGRAL DRAINAGE TRENCHES USING A ROLL FORMING TECHNIQUE AND AN INTEGRAL DRAINAGE TRENCH, ENABLING A LONG STEEL SHEET TO BE INTEGRALLY MANUFACTURED BY THE CONTINUOUS FORMING OF A STEEL SHEET USING ROLL FORMING

摘要

PURPOSE: A method of manufacturing integral drainage trenches using a roll forming technique and an integral drainage trench are provided to ensure a strong support structure by reinforcing both sidewalls of a drainage trench.;CONSTITUTION: A method of manufacturing integral drainage trenches(100) using a roll forming technique is as follows. Steel sheets are continuously formed on a plurality of roll forming units by a sequential process. Placing portions(110) are vertically projected upward on both sides of the center of the steel sheet at a predetermined gap. A flat floor(120) is formed on the center of the steel sheet. Sidewalls(130) are vertically bended upward from both ends of the floor to form a drainage path(140). The top(150) is horizontally bended outward from both upper ends of the sidewalls. Downward bended portions(160) are vertically bended downward from both ends of the top.;COPYRIGHT KIPO 2011