(a) Plumbing fixtures connected to an approved water system, approved sewage system, or approved natural gas utility system shall be installed in accordance with applicable codes and maintained in sound condition and good repair.

(b) Plumbing fixtures connected to an approved water system, approved sewage system, or approved natural gas system, not installed or maintained in accordance with applicable codes shall be removed and the service terminated and the pipes capped in the manner prescribed by applicable codes.

(c) Plumbing fixtures not connected to an approved water system, approved sewage system, or an approved natural gas utility system shall either be connected to an approved system or the fixtures shall be removed and the pipes capped in accordance with applicable codes.

(a) No vacant building or premises or portion thereof be used for the storage of flammable liquids or any other materials that could constitute a safety or fire hazard.

(b) Heating facilities or heating equipment in vacant buildings shall be removed, rendered inoperable, or maintained in accordance with applicable codes. Any fuel supply shall be removed or terminated in accordance with applicable codes.

(a) All windows shall be protected with intact glazing (glass). All windows lacking intact glazing, the sills of which are located ten feet or less above grade, stairway, landing, ramp, porch, roof, or other similarly accessible area, shall provide resistance to entry equivalent to or greater than that of a solid sheet of plywood of at least three-quarter inch thickness, painted or treated to protect it from the elements, cut to fit the opening, and securely nailed using 6D galvanized nails or woodscrews spaced not more than nine inches.

(b) Doors and service openings with thresholds located 10 feet or less above grade, or stairways, landings, ramps, porches, roofs, or similarly accessible areas, shall provide resistance to entry equivalent to or greater than that of a closed single panel or hollow core door one and three-eighths inches thick equipped with a one-half inch throw deadbolt. Exterior doors, if openable, may be closed from the interior of the building by securing them to the doorframe using minimum one and one-quarter-inch long sheetrock screws at six inches on center.

(c) There shall be one operable door into each building and into each housing unit. If an existing door is operable, it may be used and secured with a suitable lock such as a hasp and padlock or a one-half-inch deadbolt or dead latch. All locks shall be kept locked. When a door cannot be made operable, a door shall be constructed of three-quarter-inch CDX plywood painted in a color matching the existing structure to protect it from weather deterioration and shall be equipped with a lock as described above.

(a) Due to the design of the structure; or

(b) When the structure has been subject to two or more unauthorized entries after closure pursuant to the standards specified above; or

(c) When the building official determines, in consultation with law enforcement and fire officials, that the structure may present a substantial risk to the health or safety of the public, or to police or fire personnel if closed to the standards of subsection (5) of this section.