2.- Also, luffing-jib cranes can improve material handling cycles in the jobsite, using them like auxiliry cranes to the pricinpal tower cranes, reducing the construction time. 3.- Normally, the maximun load bigger than a tower craneâs. 4.- In some places, local laws make luffing-jib cranes necessary. For instance,
Updated July 22, 2016. Observed on the first Monday in September, Labor Day is the day to âthrow down your tools,â and eat too many hotdogs while thanking American workers for their collective contribution to the strength, prosperity, quality of life, cold beer, and great sales enjoyed across the nation.
On Our Radar. Ten People Who Have to Work on Labor Day. On Labor Day, Americans honor the countrys workforce and the end of summer. However, while most of us enjoy a day off, millions must continue to work to keep the countrys utilities going, its people safe and its economy running. These workers, while being saluted, do not get to celebrate themselves.