Thomas Edison. Thomas Alva Edison (February 11, 1847 â October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb.
Pipe dope, or pipe joint compound, is a gooey compound used to seal the connection between threaded pipes and fittings. Because the threads in pipes and fittings still leave an air gap between the two surfaces, the gap must be filled to make it water tight (or gas tight for gas lines).
Design information for HDPE pipe is located on the Download Page of Performance Pipeâs website. You will find links to Technical Notes, the Engineering Manual, and the Field Handbook. There is also a link to the Plastics Pipe Instituteâs Handbook of Polyethylene Pipe. Other resources include AWWA Manual M-55 and various ASCE publications including MOP 108 Pipeline Design for Horizontal Directional Drilling and MOP 112 Pipe Bursting Project.