Construction Dictionary: A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z Term Definition Y A "Y" shaped plumbing fitting. Y Strainer A device in the shape of a Y for withholding foreign matter from a flowing liquid or gas. Y-Axis One of the axes in a three-dimensional system, that is not the x- or y-axis. Yard 1. A unit of linear measure equal to 3 feet or 36 inches; equal to 0.9144 meters. 2. A square yard, as in yards of carpeting. 3. A cubic yard, as in yards of earth cut or fill. 4. A piece of enclosed ground. 5. The space around a residence; see Curtilage. Yard lumber Run of the mill lumber in a lumber yard, including all sizes and patterns. Yard of concrete One cubic yard of concrete is 3' X 3' X 3' in volume, or 27 cubic feet.  One cubic yard of concrete will pour 80 square feet of 3 ½" sidewalk or basement/garage floor. Yarn Size Carpet yarn is measured by the number of yards in length to the ounce of weight in a single ply; two to four plies of this single strand will be twisted to form the best balance for any particular weave and quality of fabric desired; it is necessary to kn Yellow Fir Douglas Fir. Yellow Metal Muntz metal. Yellow Ochre An earthy pigment made from impure iron ore, used in paint. Yellow Ware A yellow semi-vitreous ware or an earthenware with a colorless clear glaze. Yellowing Development of yellow color or cast, in whites, on aging. Yield 1. The ratio of the net income of a real estate or other investment compared to the acquisition and operating costs. 2. The amount of concrete produced by a given combination of materials; the total weight of ingredients divided by the unit weight of the Yield Point The point at which a material deforms with no increase in load; the stress at which a material ceases to deform in a fully elastic manner. Yield Strength The specified minimum yield strength or yield point of reinforcement in psi. Yoke The location where a home's water meter is sometimes installed between two copper pipes, and located in the water meter pit in the yard. Yoke Vent A pipe connecting upward from a soil or waste stack to a vent stack for the purpose of preventing pressure changes in the stacks. Young's Modulus The ratio of the unit stress to the unit strain below the proportional limit.