3-lf the time needed for 50% consolidation of a 2-in clay specimen (single drainage) in the laboratory=2 min, how many days will it take for a 12-ft thick clay layer (with sand on top, and bottom) in the field to undergo 90% consolidation under the same pressure increment?

1.In an oedometer test a specimen of saturated clay 19 mm thick reaches 50%consolidation in 20 min. How long would it take a layer of this clay 5 m thick toreach the same degree of consolidation under the same stress and drainageconditions? How long would it take the layer to reach 30% consolidation?

Kindly answe the question in the image given below (Q3)

A cohesive soil sample is subjected to an unconfined compression test. The sample fails at a pressure of 3850 lb/ft2 [i.e., unconfined compressive strength lb/ft2]. Determine the soil’s cohesion. If an unconfined compression test is performed on the same clayey soil, what axial load can be expected at failure?