A realistic classroom photo of a straw tower engineering project. The structure is a three-story building made from drinking straws and masking tape. There are exactly three thick vertical columns, each column made from four bundled straws. The columns are arranged in a triangular shape. Each story has diagonal X-shaped straw bracing between the columns. Each of the three floors is a small cardboard triangle resting directly on the columns. The base is a 20 x 20 cm cardboard square. On each of the three floors, a small weight labeled â100 gâ is placed. On the top floor, an additional weight labeled â1 kgâ is placed in the center. The structure looks stable, symmetrical, and like a real student engineering project on a table. See more