## 1 Introduction  
Incorporating an estimation of ground movement and conducting a stability check for buried pipes should be part of the architectural design [1]. Typically, both ground and building settlements can be estimated when predicting ground movement near the buried pipe sites. However, due to building loads, heavy structures experience additional settlement caused by their weight and a reduction in foundation soil stiffness. The lateral movement of the pipe also contributes to decreased soil stiffness [2]. To confirm this hypothesis, a buried pipe model test was conducted to examine the impact of altering the building's foundation depth and pile distance from the pipe face. Buried pipes are typically subjected to three loading conditions, including axial force, shear force, and bending moment [3]. Previous studies have explored the topic at hand. For instance, [PERSON] [4] and [PERSON] [5] developed an elasticity-based approach to analyze stress and strain under biaxial loading conditions. Their solution was limited to axially symmetric loading with or without end effects, and this was applicable to internal pressure, external pressure, axial load, and axial torsion. The solution assumed that there was no shear stress at the edge, that normal stresses were continuous through the layers, and that the cylinder was infinitely long. [PERSON] et al. [6] investigated the behavior of an existing sewage tunnel during the construction of the Greater Metro Line 2 (Shubra El-kheima-Mobarak) and Al-Azhar Road tunnels, which were installed using a tunneling boring machine (TBM). [PERSON] [7] and [PERSON] and [PERSON] [8] also developed an elasticity-based solution for the displacement analysis of an infinitely long tube under an applied axial bending moment. However, their analysis was restricted to a single material layer. Several relevant studies have been conducted by researchers at the University of Assiut in Egypt. [PERSON] et al. [9] and [PERSON] et al. [10] conducted a study focusing on the excavated tunnel diameter (D2), soil thickness between tunnels (H), and horizontal distance (X). [PERSON] and [PERSON] [11] and [PERSON] et al. [12] then built upon this research by examining the critical aspects of a five-story reinforced concrete building with a raft foundation using two-dimensional (2D) models. Specifically, the building was constructed adjacent to a medium sand excavation, with sheet pile walls supporting the excavation, as seen in the studies by [PERSON] and [PERSON] [13] and [PERSON] and [PERSON] [14]. In this study, a row of piles was utilized as a means of safeguarding the buried pipe. Piles are an attractive option for providing lateral support near existing structures due to their high stiffness, ease of installation, and cost-effectiveness. During excavation work near the Rehab Towers in the Al-Bisri area of Assiut, a buried pipe measuring 1200 mm in diameter and located 4 m below ground level was discovered just 2 m from the edge of the foundation. This foundation was approximately 40 m away from the pipe, as depicted in Figure 1, which shows a satellite image of the Al-Bisri area near Assiut University. In order to prevent significant risks such as explosions or fires, protective measures need to be taken for the buried pipe [15]. A boring procedure at a depth of 16 m was conducted, and the soil classification was identified as medium clay. To safeguard the pipe, it was suggested that piles could be installed at a distance of 0.5 m from the 12 m depth edge of the raft foundation, with a diameter of 40 cm and 40 cm distance between the piles. Figure 2 displays the sand coating pipe, while Figure 3 illustrates the driven piles situated adjacent to the sewage pipe. This study aimed to achieve three main objectives: (1) investigate the impact of a new building on the sewage pipe's behavior, (2) assess the changes in normal  
Figure 1: The Al-Bisri area in proximity to Assiut University.