Arsalan Ghahramani - Civil Engineering Department, Shiraz University, Shiraz, Iran

The geotechnical works in the cities have great impact on life and prosperity of the people, thus greatly affecting the sustainability an resiliency of the cities.The excavation for utilities, including gas, electricity, telephone lines, fiber optic lines, sanitary and storm sewers, are usually done in separate trenches, and hinder people and traffic and are vulnerable to heavy rains, snow falls and freezing temperatures. Sustainable and resilient cities should have proper planning for unique utility tunnels with redundancy.The excavation for underground metro tunnels, freeways, new intersections and interchanges and street widening have tremendous impact on comfort and prosperity of the people, and new insights and methods should be implemented to improve the situation for sustainable and resilient cities.The excavation for high rise buildings, which sometimes are up to 40 meter deep and 100 m by 100 m wide with traditional methods of soil nailing and anchoring etc. are basically used to save land adjacent to neighbors and city streets and cause discomfort to the cities. Innovative methods should be applied for sustainable and resilient cities.In this paper examples of traditional and improved methods are presented and guide lines are offered so that the geotechnical works have positive outcome for sustainable and resilient citie

resilient and sustainable cities, geotechnical works, utilities, infrastructure, excavation