The best time to plant your corn seeds is when the soil temperature reaches an average of 50 degrees Fahrenheit. You can determine the average ground temperature in your garden using a soil thermometer -- available at most garden stores.
Vents are a major component in a home's drainage system. Venting allows water to pass out of the drains easily. Today, houses are vented through the roof. Roof flashing, made from heavy grade rubber, lead or sheet metal holds the vent pipe in place. Another thing to consider is pitch.
Drain-waste-vent (DWV) pipes carry waste and water out of the house without gurgles or fumes. Never install or replace a DWV pipe without consulting a building inspector.These pipes must be installed according to precise specifications. Drainpipes. The centerpiece of a DWV system is the main stack, usually a pipe 3 or 4 inches in diameter that runs straight up through the roof.A secondary stack, perhaps 2 or 3 inches in diameter, serves a branch of the system.hese pipes must be installed according to precise specifications. Drainpipes. The centerpiece of a DWV system is the main stack, usually a pipe 3 or 4 inches in diameter that runs straight up through the roof. A secondary stack, perhaps 2 or 3 inches in diameter, serves a branch of the system.