Underground Electric Box Chamber Detail With 600 mm Inner Size

Underground electric box chamber construction detail drawing showing plan view, sectional view, and three-dimensional illustration of an electrical duct access chamber used in underground electrical systems. The electric box chamber drawing indicates a square internal chamber size of 600 mm with surrounding masonry walls constructed using block number 8 brick units. The chamber structure includes plastered mortar finish with a mortar proportion of 1 to 5 applied on the inner wall surfaces. The plan drawing also shows duct entry alignment passing through the chamber walls, which allows underground electrical conduits to connect safely within the inspection chamber.