| In carpeting, generic term including acrylic and modified acrylic (modacrylic) fibers; acrylic is a polymer composed of at least 85% by weight of acrylonitrile; modacrylic is a polymer composed of less than 85% but at least 35% by weight of acrylonitrile.
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| Plastic material used in manufacturing drainage pipe and fittings.
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| An unexpected event, not within the control of either party, that makes the performance of a contract impossible, unreasonable, or illegal.
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| Specially processed carbon used as a filter-drier; commonly used to clean air; pulverized carbon treated to be especially adsorbent.
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| See Activated Carbon.
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| A catalyst, curing agent, or coreactant, as for an epoxy resin.
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| In a pair of doors, the leaf that opens first and the one to which the lock is applied.
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| The pressure exerted by retained earth; such as the earth retained by a retaining wall.
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| A solar heating or cooling system that requires outside mechanical power to move the collected heat.
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| The true size of a piece of lumber after it has been milled and dried; see Nominal Dimension.
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| The giving of notice by mailing it or handing it to the recipient.
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| That portion of a regulating valve which converts mechanical fluid, thermal energy, or electrical energy into mechanical motion to open or close the valve seats.
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| An angle of less than 90 degrees.
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| A designation or gradation of plywood. The A and the D designate quality of surface layers.
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| A tax imposed at a percentage rate of the value of the property, such as property tax.
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| Americans with Disabilities Act.
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| Electrical fitting attached to the end of a conductor or to a piece of equipment, for taking power from an outlet in a way for which it was not designed.
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| See Cubical Adapter.
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| A mechanical device for connecting two different parts.
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| Adapting an old or historical building for a new purpose.
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| A revision in the contract document made prior to the execution of the owner-contractor contract.
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| An alternate bid that, if accepted, adds to the contract price.
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| A substance added to another to impart different or special qualities; an admixture.
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| A veneer secured and supported through adhesion to an approved bonding material applied over an approved backing.
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| Attached by adhesion, rather than mechanical anchorage, as adhered veneer.
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| The properties of bodies for sticking together.
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| Failure of an adhesive joint when the separation is within the adherend.
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| A body that is held to another body by an adhesive.
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| Thinner sections of ceramic veneer, held in place by adhesion of mortar to unit and to backing; no metal anchors are required.
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| Adhesion between surfaces in which the adhesive holds the parts together by interlocking action.
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