The Norwich Code of Ordinances requires property owners to maintain sidewalks in front or on the side of their property. The owner, occupant or any person having the care of any building or lot of land bordering any street, square, or public place in the city where there is a sidewalk shall cause to be removed therefrom all snow and sleet within 12 hours after the same shall have fallen, been deposited or found, or within six hours after sunrise when the same shall have occurred in the nighttime.