The best way to contact Professor Wu is via email at firstname.lastname@example.org.
Please note that office hours vary from semester to semester. For current office hours, contact Civil Engineering Department, University of Colorado Denver at (303) 556-2871. However, if you wish to make an appointment with Professor Wu, please email him directly at email@example.com.
Note: Walk-ins during Professor Wu's office hours are fine; however, it is best to make an appointment to ensure you get to meet with Dr. Wu.