Best Answer: BTU is an old fahioned term British Thermal Units and was used to calculate the amount of energy required to raise the temp of a room by a degree (using Therms as a unit here too), and is uses an energy calculation rather than a straight how much air does it push sort of calculation.est Answer: BTU is an old fahioned term British Thermal Units and was used to calculate the amount of energy required to raise the temp of a room by a degree (using Therms as a unit here too), and is uses an energy calculation rather than a straight how much air does it push sort of calculation.
Buses that primarily operate service within the city, but are not limited to this area. Local bus service varies depending on the route, but many run seven days a week and nearly 24 hours a day.
Of they keep their buses for twenty years, however, they would only need to acquire (1000/20) 50 new buses every year. If a bus costs $500,000, then they have saved their capital budget ($500,000*33) $16,500,000 a year. In an era of transit budge starvation, that is truly significant savings.ydney, Australia, has a fleet plan that counts on a bus life expectancy of twenty-three years. Of course, buses are used for even longer in developing countries-in those countries, as long as the bus has not collapsed in a heap of metal it is good to go. Smaller Buses Can Have Useful Lives As Little As Seven Years.