You have been asked to estimate the lighting load for a residential building with a 2000 sf gross area per floor. Typically, the lighting circuit is isolated from the circuit supplying power to machinery. Large oil-cooled transformers may require your attention. Comment on the location and construction of vaults for transformers in or adjacent to your structure. Acoustics Descibe how the human ear works.
Sound isolation is used in the design of a concert hall.
Give examples to illustrate.