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Term Definition
Contract Documents. The documents that comprise a construction contract, consisting of the agreement between owner and contractor, the conditions of the contract (general, supplementary, and other), drawings, specifications, and addenda issued before the contract is signed; also included are modifications issued after execution of the contract.  
Contract of Adhesion. A contract offered to a person of inferior bargaining position who has no effective means of negotiating more favorable terms.  
Contract of Sale. See Land Contract.  
Contract Sum. The amount stated in the contract for the owner to pay to the contractor for doing the work of the contract.  
Contract Time. The amount of time stated in the contract for substantial completion of the work of the contract.  
Contract. An agreement or covenant between two or more persons in which each is bound to do or refrain from doing some act, and each acquires a right to what the other promises.  
Contraction Joint. Formed, sawed, or tooled groove in a structure to create a weakened plane and regulate the location of cracking resulting from the dimensional change of different parts of the structure.  
Contraction. 1. Becoming smaller from any cause. 2.A shrinking in size when something gets colder. 3. Rction in the size of a business.  
Contractor CM. A construction manager who acts as a contractor and who may guarantee the construction cost.  
Contractor Manager. The role of the contractor as a business manager.  
Contractor. One who enters into a contract for construction of a building or part of a building; a builder.  
Contractors Level. Builders level.  
Control Circuit. In a control apparatus or system, the circuit which carries the electric signals directing the performance of the controller, but does not carry the main power.  
Control Joint. An intentional linear discontinuity in a structure or component, designed to form a plane of weakness where cracking or movement can occur in response to various forces so as to minimize or eliminate cracking elsewhere in the structure; see Control Joint and Relief Joint.  
Control Panel. A panel, cabinet, or enclosure containing two or more controllers, contractors, relays, or other control devices for the control of electrical circuits, equipment, apparatus or system.  
Control System. All of the components required for the automatic control of a process variable.  
Control Valve. A mechanical device used to regulate an operation or function; a valve which regulates the flow or pressure of a medium which affects a controlled process; such valves are operated by remote signals from independent devices using any of a number of control media such as pneumatic, electric, or electrohydraulic.  
Control, Compressor. See Motor Control.  
Control, Defrosting. See Defrosting Control.  
Control, Low Pressure. Low pressure Control.  
Control, Motor. See Motor Control.  
Control, Pressure Motor. High or low-pressure control connected into the electrical circuit and used to start and stop motor. It is activated by demand for refrigeration or for safety.  
Control, Refrigerant. See Refrigerant Control.  
Control, Temperature. See Temperature Control.  
Controller. A device, or group of devices, which serves to govern in some predetermined manner the electric power delivered to the apparatus to which it is conducted.  
Controls. 1. A mechanism used to regulate or guide the operation of a machine, apparatus, or system. 2. A functional area of management established to inform the manager when the actual experience of the business is different from that which was planned and to help maintain original budget and plan.  
Conurbation. The growing together of previously separate towns creating a large community.  
Convection Oven. An oven operating by the principal of heat transfer through automatic heated air circulation.  
Convection, Forced. See Forced Convection.  
Convection, Natural. See Natural Convection.  

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