When World War II ended in 1945 and the Baby Boom began the following year, the 30-year, fixed-rate mortgage became a cornerstone of society and led to unprecedented levels of homeownership.

Up-loading System: Boom system, Rotary table, Slewing mechanism, Fixed turret, Landing leg. Main function: Complete the concrete delivery and placing which support the vehicle to ensure its stability.

The dissertation works on machinery house, fixed tie link and boom, which vibrate most severely on the container crane.