By using Optical Microscope (OM) and Scanning Electron Microscope (SEM), the structural features of cross section, interior and exterior surfaces for wheat straws were observed and analyzed.

Choosing among different column cross-section forms and supporting forms in structural designing of kiln tail would have a great effect on the integral working performances and construction costs.

The effect of primary prestress and cross section of the cable on the structural displacement is studied in the article.