Note: For these problems, you will need to go look up the typical soil values for internal angle of frictionand unit weight. These can be found in the class materials I have provided already$\mathrm{.}1.$ Find the maximum active soil pressures for the following systems:a$.$ Cantilevered system in granular soil $($medium dense cohesionless sand$)$ b$.$ Single brace system in fine grained cohesive soil $($loose fine silty sand$)$ with $200$ psf of soil shear strengthc. Multiple brace system in granular soil $($medium dense gravel with sand$)2.$ Design the steel plate lagging $($i$.$e$.$ the plate thickness$)$ for a soldier pile system where the site has Dense Sandy Silt.Soil Unit Weight $=$ Go look this up in the class materials providedCohesion c $=225$ psfInternal Angle of Friction $=$ Go look this up in the class materials providedSoldier Pile Spacing $=12$ O$.$C$.$A$36$ Steel where Fb $=0\mathrm{.}6$FyFactor of Safety $=2\mathrm{.}5$