4 1 10 Part 4, Excavation and Retaining Structures Canadian Geotechnical Society Primary Author mixed material Canada Canadian Geotechnical Society 1978 WhatsApp_Image_2026-01-05_at_14.40.33.jpeg.jpeg Part 3, Deep Foundation Canadian Geotechnical Society Primary Author mixed material Canada Canadian Geotechnical Society 1978 WhatsApp_Image_2026-01-05_at_14.34.24.jpeg.jpeg Part 2, Shallow Foundations Canadian Geotechnical Society Primary Author mixed material Canada Canadian Geotechnical Society 1978 WhatsApp_Image_2026-01-05_at_14.26.49.jpeg.jpeg Part I Properties of Soil and Rock Canadian Geotechnical Society Primary Author mixed material Canada Canadian Geotechnical Society 1978 WhatsApp_Image_2026-01-05_at_14.19.32.jpeg.jpeg