1. An arterial in an urban area has the following typical section. This route is to be added to the network of bike routes as well as requires improved accessibility for pedestrians. Suggest a revised road section while keeping the same curb-to-curb width. Explain why you chose that section.

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa. s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)