Street Shooting to me means buildings but also people and as a rule you want to catch life as it happens. A Tripod is fine for Macro flowers,certain landscapes where you stop down for DOF. For "people pics" you need quicker reactions and you don't want stiff poses,kids hamming up,camera shy folks putting up hands or the local meth head pondering the "trade in" value of your gear. Quick and subtle. Blending in is a plus.
I once did a sunrise to after dark shoot...about 9 rolls,of San Francisco including a parade for Columbus Day,and another parade in Chinatown. No tripod.