Electrical nonmetallic tubing installed in club rooms of assembly occupancies must be concealed in walls, floors, and ceilings that provide a thermal barrier of material with a finish rating of at least _____.
A room is 10X10X8. There are two outside walls, each 10X8, and one window, 24" X 36". The window is double glass, with sealed space between. The walls are framed with wood and 3-5/8" batts. The ceiling has 6" batt insulation. The temperature difference is 30 degrees F. What is the ceiling BTU loss?
A steel forging in the shape of a regular pyramid weighs 214.5 pounds. The base of the pyramid is a square with 7.71-inch sides. Compute the height of the forging to the nearest tenth of an inch. The steel in the forging weighs 490.5 pounds per cubic foot.
"Imminent danger" is defined as "any conditions or practices in any place of employment which are such that a danger exists which could reasonably be expected to cause death or serious physical harm immediately."