The design of tension membrane for activity grandstand involves several key aspects: structural integrity, material selection, environmental factors, and aesthetic considerations. The tension membrane is a lightweight and flexible material that can be shaped into various forms and is commonly used in temporary or semi-permanent structures. The design must ensure the membrane can withstand environmental loads such as wind and snow, while also maintaining its shape and structural stability. Factors like material properties, membrane tension, and support system design are crucial in achieving a functional and visually appealing grandstand.