When any person fails or refuses for any reason to pay any fine or costs adjudged against him, upon conviction of a violation of this Code or other ordinance of the City Council, he shall be required to do manual labor in accordance with the following rules and regulations:
(1) To work for city only. Persons so convicted shall work on the city's streets, bridges, parks and municipal property and for the city only.
(2) Guarding of prisoners. The City Council may employ a person to guard such prisoners and to oversee the labor, enforce such labor and prevent escape by prisoners, and the person so employed shall be paid out of the city treasury, such compensation as the City Council may prescribe. Persons so convicted shall be guarded with firearms or with ball and chain, if necessary, while at work, so as to prevent escape.
(3) Work hours. Persons working under this section shall be required to labor not less than eight hours each day, Sundays excepted. In the event of an emergency, however, prisoners may be required to work longer hours.
(4) Physical inability to work. A prisoner who, from age, disease or other physical or mental disorder, is physically unable to do manual labor, shall not be required to do manual labor, but shall remain in jail until his fine and costs adjudged against him are discharged according to law. The prisoner's inability to do work, when such disability is not obvious, shall be determined by examination by the City Council physician.
(5) Credit against fine and cost. Each prisoner shall receive credit against his fine and costs as follows:
a. for each day he or she remains in jail, $5.00.
b. for each day a prisoner works on streets, bridges or other public property, an additional $2.00 per day.
c. for each day the prisoner serves as a trustee, an additional $1.00 per day.
It is the intention of this subsection to provide that a prisoner may work off as much as $7.00 per day on his fine, if working on streets and bridges, $6.00 per day on other work, and receive a minimum credit of $5.00 per day if he is unable to work.
(6) Food for prisoners. Prisoners that work under the provisions of this section shall receive food three times a day and prisoners that do not work shall receive only breakfast and evening meals.