A sandstone bed with RQD 5 70% and g 5 26.0 kN/m3 lies beneath 1.5 m of overburden soil. A 2.0 m 3 2.0 m square foundation is to be placed on top of the sandstone rock (i. e., at a 1.5 depth below the ground level) to carry a column load. The unit weight of the soil is 18.0 kN/m3. Assuming the rock strength parameters from Problem 7.17

An electric kettle is made out of stainless steel, weighs two pounds (when empty) and is equipped with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling