F102.4.2 Rodent-accessible openings.

Operable windows and other openings providing required or voluntary natural ventilation in the exterior located within 2 feet (610 mm) of exposed pipes, wires, conduits and other appurtenances, shall be covered with wire cloth of at least 0.035 inch (0.89 mm) wire. The openings in the hardware cloth shall not exceed 1/4 inch (6.4 mm).

   Exception: In lieu of wire cloth covering, said pipes, wires, conduits and other appurtenances shall be blocked from rodent usage in accordance with one of the following:

      1.   Installation of solid sheet metal collars 0.024 inch (0.61 mm) thick or heavier. Such collars shall be fastened around the pipes, wires, conduits or other appurtenances, projecting a minimum distance of 12 inches (305 mm) beyond and on either side of the pipes, wires, conduits or appurtenances.

      2.   Installation of solid sheet metal guards fastened securely to the exterior wall, projecting 12 inches (305 mm) perpendicularly from the exterior wall for the length of the opening plus 2 feet (610 mm) beyond each end of the opening.

F102.5 Exterior wall ventilation openings.

Exterior wall ventilator openings located with any portion within 2 feet (610 mm) of outside ground level shall be covered for their height and width with perforated sheet metal plates no less than 0.070 inch (1.8 mm) thick, expanded sheet metal plates not less than 0.047 inch (1.2 mm) thick, cast-iron grills or grating, extruded aluminum load-bearing vents or with hardware cloth of 0.035 inch (0.89 mm) wire or heavier. The openings therein shall not exceed 1/4 inch (6.4 mm).

Appendix G: Flood-Resistant Construction

Section BC G101: Purpose and Objectives

G101.1 Purpose.

The purpose of this appendix is to promote the public health, safety and general welfare and to minimize public and private losses due to flood conditions in specific flood hazard areas through the establishment of comprehensive regulations for management of flood hazard areas designed to:

   1.   Prevent unnecessary disruption of commerce, access and public service during times of flooding;

   2.   Manage the alteration of natural floodplains, stream channels and shorelines;

   3.   Manage filling, grading, dredging and other development that may increase flood damage or erosion potential;

   4.   Prevent or regulate the construction of flood barriers that will divert floodwaters or that can increase flood hazards;

   5.   Contribute to improved construction techniques in the floodplains; and

   6.   Comply with and exceed the minimum standards of the National Flood Insurance Program as administered by the Federal Emergency Management Agency (FEMA).