On the Interaction between the Depth and Elevation of External Shading Devices in Tropical Daylit Classrooms with Symmetrical Bilateral Openings

External shading devices are an important design feature in tropical buildings, particularly for climate mitigation. However, the interaction between depth and elevation of their impact on indoor daylight performance is not fully understood, especially case buildings with bilateral openings. This study therefore aims to evaluate possibilities external various terms school classrooms openings Indonesian city. A computational simulation method using Radiance utilized perform annual metrics calculations. Geometry, material, settings prepared Ladybug tool under Grasshopper four building orientations, namely 0°, 45°, 90°, 135°. Sensitivity uncertainty analyses conducted all combinations. The results show that a device’s unique, depending orientation availability direct sunlight. In general, more influential, compared depth, observed combined objective functions at orientations.