Rock Mass Classification
Rock mass classification systems — RMR (Rock Mass Rating), Q-system (Barton), and GSI (Geological Strength Index) — with rating ranges, rock quality descriptions, support recommendations, and estimated strength/deformation parameters
Attributes
rating_mindimensionless
rating_maxdimensionless
rock_mass_description
rqd_pct_range
joint_spacing_mm_typical
support_recommendation
estimated_modulus_gpa_minGPa
estimated_modulus_gpa_maxGPa
cohesion_kPa_minkPa
cohesion_kPa_maxkPa
friction_angle_deg_mindeg
friction_angle_deg_maxdeg
notes
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