1.What is the principal alloy in steel and why is it added to steel when in molten state during manufacture.
2.If a sample of wood measuring 1.45” x 3.45” x 6” long has a green weight of 8.55 lb. Determine the specific gravity of this wood.
3.How many hours are needed to compact a 20km long x 7.5m wide highway with a self-propelled tamping foot roller under the following conditions: avg speed = 10km/hr, compacted lift thickness = 20cm, effective roller width = 3.7m, job efficiency = 0.83, and number of passes = 6
4.A structure is designed with a factor of safety of 5.25 psi. If the allowable stress of the structure is 3000 psi. What stress on the structure will lead to its failure?