Underground spaces in contemporary cities have many uses. One major use of such spaces is to construct metro tunnels. Utilizing such spaces has a number of advantages but there is the potential of damaging existing buildings because of changes incurred to the substrate. This is more pronounced for historic buildings in cities with ancient origins. Computer modeling can estimate much of this damage before starting construction. Since Mashhad metro line3 passes under the city’s old texture, this research was conducted using Plaxis 3D Tunnel software to create 15-node elements with 40×80m dimensions. Maximum loading relates to Imam Reza street buildings which had the most critical subsidence potential.

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