Question

Problem One: Please use excel if the calculations, to save time. Just show eq use:

Find the Maximum Stress and the unconfined compression strength and cohesion of soil

then Draw Mohr Circle

Diameter=	7.29 cm
Height of Sample=	14.78 cm

Sample Deformation (mm)	Load (lb)
0	0
0.2	1.262
0.4	2.839
0.6	3.785
0.8	5.994
1	6.625
1.2	7.571
1.4	8.202
1.6	9.148
1.8	10.41
2	11.356
2.5	14.196
3	17.035
3.5	20.189
4	23.344
4.5	26.498
5	29.338
5.5	32.177
6	35.331
6.5	37.855
7	40.694
7.5	43.533
8	45.426
8.5	47.95
9	50.473
9.5	52.366
10	53.943
11	57.413
12	60.568
13	63.722
14	65.931
15	68.454
16	70.347
17	72.24
18	73.817
19	75.71
20	76.656
22	78.864
24	79.811
26	80.442
28	80.757
30	80.126

Answer 1

From the table, we can see that load is continuosly increasing till 80.757lb i.e at 28mm deformation. After that only the load is decreasing which implies that the soil failed at 28mm deformation and 80.757lb load.