Glossary

Glossary of 7847 Property Development Terms

Z

Z - A numerical coefficient used in the design of earthquake forces and that is dependent upon site location.

Z Axis - One of the axes in a three dimensional system.

Z Bar - A Z shaped steel or sheet metal strip used for light framing or furring.

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 property.

Z Furring Channel - A Z formed metal channel for mechanically attaching gypsum board and insulation material on masonry walls.

Z Shaped Wall Tie - A Z shaped reinforcing strip used as a support bracket from the structural wall to the masonry veneer.

Z Wall Tie - A Z shaped reinforcing strip used as a support bracket from the structural wall to the masonry veneer.

Zaffer - An impure oxide of cobalt used as a blue ceramic colouring.

Zax - An implement used for splitting and installing slates, a kind of hatchet with a sharp point on the head for perforating the slate to receive a nail or pin.

Zebrawood - The mottled or striped wood of several trees, such as various leguminous African timber trees with pale golden heartwood uniformly striped with dark brown or black.

Zenith - The highest or culminating point.

Zero Absolute - A theoretical lowest possible temperature, at which all molecular motion ceases, calculated to be exactly minus 273.15°Centigrade or minus 459.67° Fahrenheit.

Zero Ice - Trade name for dry ice.

Zero Slump Concrete - A concrete mixed with so little water that it has a slump of zero when tested.

Zeta - A closed or small chamber; a room over a church porch where documents were kept.

Ziggurat - A stepped pyramid, as in the sacred architecture of Western Asia in antiquity.

Zigzag - Making short and sharp turns; in architecture, especially in the moldings in arched door heads of Romanesque style.

Zigzag Bond - Bricks that are laid in a zigzag fashion.

Zigzag Folding Rule - Classic woodworking rule that is better for measuring longer runs.

Zinc -

• A bluish white crystalline metallic element of low to intermediate hardness that is ductile when pure but in the commercial form is brittle at ordinary temperatures and becomes ductile on slight heating.
• Zinc, as galvanizing, is widely used as a protective coating for iron and steel.
• Zinc is used extensively as paint pigment.

Zinc Chromate - Metal priming pigment with important rust inhibitive properties, Zinc Yellow

Zinc Coated Aluminium - Aluminium, zinc plated for corrosion protection by hot dipping into molten zinc or by electrolysis.

Zinc Dust - Finely divided zinc metal, gray in colour, used primarily in metal primers

Zinc Oxide - A compound of zinc used as a white pigment in many types of paint.

Zinc Oxide American Process - Zinc oxide pigment made directly from zinc ores; also called Direct Process.

Zinc Phosphate Coating - Treatment used on steel to improve adhesion of coatings.

Zinc Silicate - Inorganic zinc coating.

Zinc Sulphide - Compound of zinc used as white pigment in paints.

Zinc Yellow - Metal priming pigment with important rust inhibitive properties, Zinc Yellow

Zincky - Containing or resembling zinc.

Zincoid - Relating to or resembling zinc

Zip Tape - In gypsumboard bundles, a reinforcement paper strip to facilitate the removal of end bundling tapes.

Zippers - Paper Rollers.

Zircon Porcelain - A vitreous ceramic whiteware for technical application in which zircon (ZrO2SiO2) is the essential crystalline phase.

Zone -

• In space heating or air conditioning, a specific area in a building that is kept at the same temperature.
• A defined area of land that is limited in use to some particular purpose, such as residential, commercial, or industrial.
• The section of a building that is served by one heating or cooling loop because it has noticeably distinct heating or cooling needs.
• 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 -

• Government regulation of the use of privately owned land.
• The official designation of parts of a municipality or other governmental territory to be used only for certain specified land uses.
• Laws that govern specifically how a zoned area can be used.

Zonolite - A lightweight insulating concrete composed of portland cement, vermiculite aggregate, and water.

Zoophoric Column - A pillar supporting the figure of an animal.

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