Explain, with the aid of notes and freehand sketches, any five of the following: - joist bridging - working drawing - rooflight - steel reinforcement - heat pump - ridgeboard - biscuit joint - room thermostat - building energy rating. - Leaving Cert Construction Studies - Question 8 - 2021

A working drawing is a scaled drawing that acts as a guide in the construction of structures. It includes detailed elevation, floor plans, and section views to convey dimensions and specific information necessary for construction. This can be created using Computer-Aided Design (CAD) software and is commonly referred to as building plans or blueprints.

Roof lights are installed on roof surfaces to provide natural light indoors. These units can include double, triple, or quadruple glazing. They also allow for attic space to be utilized effectively, serving as a valuable component in the overall design of a house, particularly for enhancing privacy compared to ground-level windows.

Steel reinforcement involves combining steel with concrete to create a strong building material known as reinforced concrete. The steel is encased within load-bearing structures to increase its strength and help counteract tension forces, usually placed at a depth that adheres to the foundations of the structure.

A heat pump is a system used to transfer heat from one area to another, operating through the refrigeration cycle. It utilizes a fan to draw air over an evaporator coil, extracting heat and transferring it via a refrigerant. The refrigerant is then compressed, raising its temperature for distribution via radiators or underfloor heating systems.