New Year's Eve Dinner. The New Year's Eve dinner is the most important dinner for the Chinese. Normally, this is the family reunion dinner, especially for those with family members away from home. During the dinner, normally fish will be served. Dumplings are the most important dish in Northern China. These two dishes signify prosperity.
A trap arm is only the section of pipe between a trap and the vent. A fixture drain is the section of pipe between a trap and another section of drainage. The information on this site is for informational purposes only.
For example, the trap arm of a 3 pipe at a 1/4 per foot grade can run 12 feet before requiring a vent to protect the trap(12 x 0.25=3), therefore a 2 trap arm could go 8 feet and an 1.5 pipe could go 6 feet. In the above picture, a vent is connected to the fixture drain, which changes the pipe's name/terminology.