She couldn't afford to get on her teacher's bad side, she told me, citing a proverb: "A person who stands under someone else's roof bow his head."

At last, the article made use of DYNAFORM software to simulate the horizontal beam and the roof bow, and in the actual production carried on a verification to the spring-back of the roof bow.

The long span roof structure of the multipurpose gymnasium consists of steel and timber bow trusses that seemingly float above the clerestory and becomes skyline feature of the project.