GF C I, or G F I– Ground Fault Circuit Interrupter- an ultra sensitive plug designed to shut off all electric current. Used in bathrooms, kitchens, exterior waterproof outlets, garage outlets, and “wet areas”. Has a small reset button on the plug.
Gable– The end, upper, triangular area of a home, beneath the roof.
Gang nail plate– A steel plate attached to both sides at each joint of a truss. Sometimes called a fishplate or gussett.
Gate valve– A valve that lets you completely stop—but not modulate—the flow within a pipe.
General Contractor A contractor who enters into a contract with the owner of a project for the construction of the project and who takes full responsibility for its completion, although the contractor may enter into subcontracts with others for the performance of specific parts or phases of the project.
Gas lateral– The trench or area in the yard where the gas line service is located, or the work of installing the gas service to a home.
Girder– A large or principal beam of wood or steel used to support concentrated loads at isolated points along its length.