1-For a saturated soil, unit weight = 122.5 lb/ft3, Gs = 2.70. Find the dry unit weight, void ratio, and water content 2-Saturated clay sample has Ws = 100 lb, and water content of 32%. Find the void ratio, total unit weight, dry unit weight. Gs = 2.70.

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk