Straight seed consists of only one type of grass and is suited to situations where you want to achieve a certain look or effect. Blends (several varieties of one type) and mixtures (combination of different types) offer better disease resistance and a uniform lawn.lended Seed Mixtures: Blended seed mixtures combine several different kinds of the same grass species to capitalize on the strengths of each type. By using the same species, you can ensure a more consistent appearance to your lawn.
In new construction, the plumber will install a separate vent for any plumbing fixture that does not use the vanity vent. If a fixture has its own vent line, the line will run vertically to the attic and tie into the vent-and-soil stack if possible. If not, a separate roof exit is necessary. Alternately, the vent pipe can exit the home through an exterior wall, with the opening covered by a vent plate.
A waste stack carries waste disposal from all other fixtures. A vent stack provides air circulation throughout the waste system and allows for the release of sewer gases. Placement of the stack. The stack runs in the building wall, up through each floor, and out through the roof. Start at the building sewer pipeline and work towards the place where stack will be installed. 2  Set the pipe to a grade slope of inch per foot with a carpenters level. 3  The slope will rise from the building sewer line to the stack. 4  Support the pipe at each connection to maintain the grade slope.