Lunar infrastructure planning has advanced from conceptual design to mission-phase 
implementation. Programs such as Artemis and commercially funded surface operations 
now require geotechnical input at the level of formal engineering. However, classical soil 
mechanics frameworks, developed under terrestrial conditions of atmospheric pressure, 
fluid saturation, and Earth gravity, are not valid for lunar applications. The Moon presents a 
granular medium formed by impact fragmentation, with no pore pressure, no cohesion from 
moisture, and no biological or chemical weathering. Load response, shear strength, and 
deformation mechanisms occur under a distinct set of physical conditions that are not 
addressed by existing design models.