Thermae would be heated by a log fire before being channelled into the hot bathing rooms. The design of baths is discussed by Vitruvius in "De Architectura". "Thermae, balneae, balineae, balneum" and "balineum" may all be translated as "bath" or "baths", though Latin sources distinguish among these terms. "Balneum" or "balineum", derived from the Greek signifies, in its primary sense, a bath or bathing-vessel, such as most persons of any consequence among the Romans possessed in their own houses, and hence the chamber which contained the bath, which is also the proper translation of the word "balnearium". The diminutive "balneolum" is
Opera publica Opera publica Opera publica is the Latin name used by Ancient Rome for the building of public works, construction or engineering projects carried out under the direction of the state on behalf of the community, and the buildings themselves. The term "public works" is a calque (literal word-by-word translation) of the Latin. Public works in the Roman Empire were not merely buildings for the conduct of the business of running the city, but all buildings for public use. Therefore, temples, basilicae, theatres, porticoes, fora, walls of towns, aqueducts, harbours, bridges, baths (both thermae and balneae), fountains, circuses, markets, cloacae, roads,