Acontractor needs to import 10,000 cy (compacted volume) of soil to build a small dam. construction specifications require the soil to be compacted to 90% relative compaction with the maximum dry unit weight of compaction of 105 pcf. how much soil needs to be excavated from a borrow pit with moist unit weight of 110 pcf and moisture content of 16%?

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody

Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?