Williams Transco Central Penn Line South. Williams Transco Central Penn Line South. Unlike liquid petroleum product pipelines, where the main risk is a leak leading to contamination of water and soil, the main risk with a high-pressure natural gas pipeline is a rupture and ensuing fire.
The White House today holds 142 rooms on six floors, the floor space totaling approximately 55,000 square feet. It has hosted longstanding traditions such as the annual Easter Egg Roll, as well as historic events like the 1987 nuclear arms treaty with Russia.
The green-and-white palace has the shape of an elongated rectangle, and its principal faÃ§ade is 250 metres (820 ft) long and 30 m (98 ft) high. The Winter Palace has been calculated to contain 1,786 doors, 1,945 windows, 1,500 rooms and 117 staircases.