please see the file

please see the file


N-Values 337 46 a1 3365 [°° 51 26 SY Figure 2: STP N values at 0.91 m depth. (b) Two white lines are drawn in Figure 2 to show where ¢ = 73.205 and when g = 33.66. (i) Sketch S as a function of g when ¢ = 73.205. (This is the cross-section of S(¢,g) when ¢ = 73.205.), (ii) Sketch S as a function of £ when g = 33.66. (This is the cross-section of S(¢,g) when g = 33.66.) (c) Three points, P, Q and R are shown on Figure 2. (i) For which of these points is a <0? (ii)="" for="" which="" of="" these="" points="" is="" -=""> 07 (Note: more than one point may satisfy each condition.) 3. Geotechnical engineers use a procedure called the Standard Penetration Test (SPT) to provide information on geotechnical properties of soil. The SPT measurement is given as a positive integer (whole number) between 1 and 50 and this is known as the SPT N value. (You can read more about the SPT in wikipedia, for example.) A group of geotechnical engineers have recently published a study on soil properties in the region near Islamabad in Pakistan [1]. They produced a series of contour maps showing the SPT N value at various soil depths. Two of these contour maps are shown below (Figures 1 and 2). These maps have been annotated for the purpose of this assignment. In Figures 1 and 2, the horizontal axis is latitude which we will denote by £ and the vertical axis is longitude which we denote by g. We give the SPT N value the mathematical symbol S. Hence we can write S = S(, g) or, in words, SPT N is a function of latitude and longitude. N-Values 33.7 46 41 33.65 ad 31 26 33.6 21 Figure 1: STP N values at 1.52 m depth. (a) In Figure 1, there are three points marked, A, B and C on the contour plot for STP N. What is the feature of the contour plot at each of these points? (There is a different feature at each point.)