The soil profiles for four boreholes (BH) at a site pro- posed for an office building are shown in Figure P4.25. The soils in each borehole were classified using ASTM-CS, Sketch the soil profiles along a diagonal line linking boreholes 1, 2, and 3 and along a line linking boreholes 3 and 4. BH 4 BH 1 50 m BH 2 BH 3 50 m 50 m (a) Plan El: 5.1 El: 3.2 El: 4.5 El: 3.8 ML 10 CH SW-SM 30 GP BH 4 BH 2 BH 3 40 DOXX Bedrock BH 1 (b) Borehole soil FIGURE P4.25 Depth (m) 20