Y A “Y” shaped plumbing fitting.
yard An open space on the same lot with a building.
yard lumber Lumber of those grades, sizes, and patterns which are generally intended for ordinary construction, such as framework and rough coverage of houses.
yard of concrete One cubic yard of concrete is 3′x3′x3′ in volume, or 27 cubic feet. One cubic yard of concrete will pour 80 square feet of 3 ½” sidewalk or basement/garage floor.
yoke The location where a home’s water meter is installed between two copper pipes, and located in the water meter pit in the yard.
Z-bar flashing Bent, galvanized metal flashing that’s installed above a horizontal trim board of an exterior window, door, or brick run. It prevents water from getting behind the trim/brick and into the home.
zone The section of a building that is served by one heating or cooling loop because it has noticeably distinct heating or cooling needs. Also, the section of property that will be watered from a lawn sprinkler system.
zone valve A device, usually placed near the heater or cooler, which controls the flow of water or steam to parts of the building; it is controlled by a zone thermostat.
zoning A governmental process and specification which limits the use of a property, e.g. single family use, high rise residential use, industrial use, etc. Zoning laws may limit where you can locate a structure. Also see Building Codes.