Extra problem 40-05 3.5e-05 3e-05 2.5e-05 20-05- 1.5e-05- 10-05 0.5 1 1.5 2 10-0 5 Roughness Profile 4 Surface Profile 3 2.5 Distance (m) Height (m) -3 -4 2 3 3.5 4 4.5 x10 -5 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Distance (m) x10-3 Figure: Profile of surface heights vs. distance (a) containing both surface waviness and roughness and (b) only roughness. 5. For the surface roughness profile shown in figure (b), estimate centerline average roughness (CLA) Ra, root mean square roughness (RMS) Rq maximum peak to valley roughness R surface skewedness Sk