Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:


Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

30°Manhole covers / Public facilities design

30°Manhole covers
30°Manhole covers

The drainage system has great influence on hidden danger of flood in city. The main reason for current flood is unsmooth drainage system. The main reason leading to the phenomenon is the blocking of sewer or drain hole of well lid. There is hidden danger of flood existing during the rainy season with great damage to urban environment, residents’ life and properties and so on; now the drain hole is designed as inclined to prevent leaves, solving the problem of sewer blockage efficiently with realistic significance as to solving potential risk of flood.


Southwest Jiaotong University

Southwest Jiaotong University
School of Arts and Communication
ChengDu, China