BOT is one of the most important methods, which has
made infrastructure projects through participation of
private sector, particularly foreign investors.
The BOT contract is a contract in which the client, which usually is
from government part, assigns a private firm with the credit
of executing a project or plan within a certain time. The
founder of the project undertakes financial, design,
construction, repair, and maintenance and utilization
responsibilities of a project during a certain period. After
expiration of the contract, the privileges and ownership of
the project or the plant will be transferred to the
government with no extra charges. The founder owns the
project during the period of contract runs it and collects the
income earned through offering services. These incomes are
used for paying utilization costs, payment of principal and
interests of loans, paying back the principal capital and the
dividends considered by the investors. Table 2 shows
executive steps of using BOT method and important
arrangements of each stage.