Abstract: The cracking on the concrete sidewalls of cut and cover tunnels, very long subway stations and very deep basements of building is always one of the frequently occurred issues during the construction. This paper discusses factors that causing cracks on the sidewalls. The case history of different measures on controlling cracks on a cut and cover tunnel are presented and the results are compared. Cracking mitigation methods are also recommended.

Key words: Cut and Cover Tunnel, Sidewall, Cracking, Factors Causing Cracks, Mitigation