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Term Definition
Residential Equipment. An appliance or piece of equipment found in the home, that is used by the homeowner.  
Residential Occupancy. A building or any portion of a building containing one or more dwelling units.  
Residual Stress. stress remaining in a structure or member as a result of thermal or mechanical treatment or both.  
Residual, Building. see Building Residual.  
Residual, Land. see Land Residual.  
Residual. 1. The remainder or residue after a chemical reaction or a transaction. 2. Free acting disinfectant remaining in poolwater after treating and breaking down pollution.  
Resilience. 1. Ability of a material to resume its original size and shape after deformation, such as stretching, twisting, compression, or indentation. 2. The measurement of the absorption of dynamic energy by a structure without permanent deformation or fracture. 3. The property whereby a strained body gives up its stored energy on the removal of the deforming force. 4. The ability of a carpet fabric or padding to spring back to its original shape or thickness after being crushed or walked upon.  
Resilient Channel. A metal furring member designed to absorb sound or noise impact which strikes the surfacing membrane.  
Resilient Floor Covering Institute (RFCI). 1030 15th Street, NW, Suite 350, Washington, DC 20005, (202) 833-2635.  
Resilient Flooring. Flooring materials such as asphalt, vinyl, linoleum, rubber, cork, and similar resilient materials; available in tile or sheet form.  
Resin Hardness. Method of indicating hardness of resins; usually from No. 1 (hardest) to No. 6.  
Resin. A sticky material obtained from the sap of certain trees and plants (natural resin) or made synthetically from coal-tar products and other organic substances (synthetic resin); resins are widely used in making varnishes and paints.  
Resist Printing. Placing a dye-resist agent on carpet prior to piece dyeing so that the pile will absorb color according to a predetermined design.  
Resistance or R-Value. The tendency of a material to retard the flow of heat.  
Resistance. 1. An opposing or retardant force. 2. An opposition to flow or movement such as friction. 3. The property of hindering the conduction of electricity or heat.  
Resistivity (r ). The property of hindering the conduction of heat or electricity; the reciprocal of conductivity, l/k.  
Resistor. Electrical device having resistance to the passage of electrical current.  
Resolving Forces. Replacing a force or forces with two or more other forces that yield the same effect on a structure as the original forces.  
Resonance. Movement produced in an element as a result of movement added to its natural period of movement, which is the same.  
Resorcinol Glue. A glue that is high in both wet and dry strength and resistant to high temperatures; used for gluing lumber or assembly joints that must withstand severe service conditions.  
Respirator Mask. A device worn over the mouth to aid in breathing.  
Respirator. A device for maintaining artificial respiration.  
Respondiat Superior. The doctrine that a principal is liable for the acts of an agent, and an employer for the acts of an employee.  
Response. Effect produced on a structure by earthquake ground motion.  
Restaurant. A room or building for preparing and serving meals to the public.  
Restoration. The act of restoring to an original condition; the act or process of bringing a structure back to its former position or condition.  
Restretch. A term applied to the remedial steps necessary for the correction of improperly laid carpet resulting from application of wrong stretching techniques, carpet defects, or undetermined causes.  
Restrictor. A device for producing a deliberate pressure drop or resistance in a line by rcing the cross-sectional flow area.  
Restroom. A room in a public place equipped with toilets, urinals, and lavatories, usually segregated by gender.  
Resultant. A force that will produce the same effect as two or more combined forces.  

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