A 70 m long circular corrugated metal pipe culvert with a vertical headwall is required to pass the 2% flood event (Q = 4.5 m3 /s). The maximum permissible value of HW is 2.2 m to ensure that the road crossing is not submerged. The channel slope is 0.001, with a trapezoidal shape of b= 1, m = 2, and n = 0.035. Determine an appropriate culvert diameter

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?