Donors must weigh at least 110 pounds and be at least 17 years old. In Minnesota, 16-years-olds may donate with written consent from a parent or guardian. During your donation appointment, you will complete a brief health questionnaire to make sure blood donation is safe for you and the recipient of your blood.
Three inch pipes are used to handle most residential toilets. 1.5 inch lines are used to handle waste from kitchen, bathroom and powder room sinks. 2 inch drain lines are common pipes for laundry drains. Clogs can develop easily on horizontal runs of pipe. Friction causes the water within the pipe to slow down. To achieve good water flow, try to install horizontal drain pipes so they have a minimum of 1/4 inch per foot slope. 3/8 of an inch per foot is actually better.
The start of a toilet waste system is the toilet's own waste outlet, while the main pipe is the soil stack. The stack is a 3-inch or 4-inch length of vertical pipe that drops to the sewer and is connected to a 2-inch pipe that rises through the roof to provide venting.