Figure 7.
The image consists of three scatter plots arranged in a row, labelled a, b, and c, depicting the relationship between elevation measured in metres and horizontal stress values indicated in kilonewtons per square metre. Each plot features distinct symbols to differentiate various conditions, specifically Stage f between counterfort walls, Stage f adjacent to counterfort walls, Stage h between counterfort walls, Stage h adjacent to counterfort walls, Stage i between counterfort walls, and Stage i adjacent to counterfort walls. The x axis represents the horizontal stress, ranging from approximately negative 200 to positive 50, while the y axis indicates elevation, extending from around negative 200 to approximately 10. Each graph also includes a legend detailing the symbol meanings, positioned in the lower section. The data points appear clustered in distinct patterns, indicating different behaviours under varying conditions across the three stages.Plaxis-estimated stresses behind the combi-wall at selected construction stages: (a) vertical effective stress; (b) horizontal effective stress