Results of a standard compaction test (mold volume 943.9 cm3 ) are: Trial No. 1 Mass of soil + mold 5619 g Mass of mold 3735 g Water content test Mass of sample + container 288.26 g Mass of dry sample + container 265.39 g Mass of container 104.31 g Trial No. 2 Dry density 1795 kg/m3 w=14.9% Trial No. 3 Dry density 1828 kg/m3 w=15.6% Trial No. 4 Dry density 1832 kg/m3 w=16.5% Trial No. 5 Dry density 1796 kg/m3 w=17.6% Complete the calculations for trial No. 1. Draw the moisture-density curve using Excel or other spreadsheet programs. Include ZAV curves at w=16%, 17%, and 18%. (The relative density of the soil is 2.65.) Find the maximum dry density and the optimum water content.

Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?