2025-09-042025-09-042025-06-30https://repositorio.ifal.edu.br/handle/123456789/1232The disorderly growth of urban areas has intensified the occupation of slopes susceptible to instability, especially in regions within the Barreiras Formation, where anthropogenic interventions significantly alter the natural balance of the terrain. In this context, the present study aims to evaluate the stability of a slope located on Rua Prefeito Joatas Malta de Alencar, in the Complexo Chã da Jaqueira, Maceió-AL, an area with a history of landslides. The methodology involved physiographic characterization of the area, topographic and geotechnical surveys, laboratory tests for soil characterization, and computational modeling using the SLOPE/W software, applying the Bishop and Morgenstern-Price methods. The soils on the slope were classified, according to the Unified Soil Classification System (USCS), as clayey-silty sand (AM-01) and clayey sand (AM-02), both belonging to the Barreiras Formation. AM-01 exhibited low plasticity, poorly graded granulometry, and a specific gravity of 2.65 g/cm³. AM-02 showed medium plasticity and a specific gravity of 2.67 g/cm³. The obtained specific gravity is consistent with the typical mineralogy of the Barreiras Formation. The local geomorphology belongs to the Coastal Plateaus compartment, characterized by dissected surfaces, entrenched valleys, poorly structured drainage, and intense erosive processes. From the Digital Elevation Model (DEM), three topographic profiles were defined as the most critical for stability analysis: Section 1, Section 2, and Section 3. During computational modeling, two main scenarios were simulated: one considering the natural unit weight of the soils and another using the saturated unit weight, representing more critical moisture conditions. In both scenarios, the modeling indicated that Section 3 presented a Factor of Safety (FS) below 1.0, characterizing an unstable slope; Sections 1 and 2 presented FS ≈ 1.2, indicating a warning condition. The observed instability is possibly associated with lithological heterogeneity, the steep slope caused by anthropogenic occupation, and the absence of retaining structures, highlighting the need for mitigation measures to ensure the safety of the analyzed area.ptAttribution-NonCommercial-NoDerivs 3.0 BrazilEngenharia CivilEncostas urbanas – EstudoEncostas – AnáliseBarreiras – FormaçãoRisco geotécnicoTalude – Chã da JaqueiraStudy of urban slopesBarreiras formationGeotechnical riskSlope analysisSLOPE/WTrabalho de Conclusão de CursoENGENHARIAS::ENGENHARIA CIVIL