Monitoring system of cameras that are interconnected so that remote areas can be check from one point, usually for security purposes.
Closed cut valley
A method of valley treatment in which shingles from one side of the valley extend across the valley, while shingles from the other side are trimmed 2 inches from the valley centerline. The valley flashing is not exposed.
Closed cycle
A system in which a working fluid is used over and over without introduction of new fluid, as in a hydronic heating system or mechanical refrigeration system.
Closed joint
Weather sealed joint used between sections of concrete to allow differential movement between the sections while protecting from moisture.
Closed loop
Continuously looped system used primarily in such instances as refrigeration so that the refrigerant can be circulated, compressed and expanded within the system.
Closed loop biomass
As defined by the Comprehensive National Energy Act of 1992 (or the Energy Policy Act; EPAct).
Closed loop contour lines
Contour line, which forms a closed loop, which shows either a depression or a mound.
Closed mortgage
Mortgage in which the collateralized property cannot be used as security for another loan.
Closed string stairway
Stairway that has finish stringers that cover the end of the risers and treads.
