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.
Lining Your Fireplace Insert Flue.  Where a wood-burning fireplace insert is vented into a chimney with an oversized flue, into an unlined chimney, or into a chimney with a damaged masonry liner, the chimney shall be refitted with a properly sized UL Listed metal or masonry liner.. -WABO Codebook (From NFPA 211).