${?}_{\_\_\_\_\_\_\_\_\text{\#}\text{\#}\text{:}\text{:}**\text{D}\text{i}\text{s}\text{c}\text{u}\text{s}\text{s}\text{t}\text{h}\text{e}\text{m}\text{e}\text{t}\text{h}\text{o}\text{d}\text{s}\text{u}\text{s}\text{e}\text{d}}$toassessandimprovesoilcompactioninconstructionsites.Explaintheconceptof'shearstress'instructuralmechanicsanditsroleindeterminingthestrengthofmaterials.Howdoengineerscalculateandmitigateshearstressinbuildingdesigns?Describetheprinciplesof'fluidmechanics'anditsapplicationinhydraulicengineering.Howdoesanunderstandingoffluidbehaviorcontributetothedesignandoperationofwatersystemsanddrainagesystems?"**