§ 13-68. Natural lighting.

All habitable rooms, except as otherwise provided in this chapter, shall be provided with a means of transmitting natural light from the outside complying with the following requirements:

(1)

The required clear glass area shall not be less than one-tenth of the floor area of such room and not less than ten square feet. The effective area shall be computed at not more than 80 percent of the actual area when a required natural light area:

a.

Faces a wall or other obstruction at a distance of less than ten feet; or

b.

Is located below a roof or other obstruction projecting more than four feet from the face of the window or other natural light area and the plane from the head to the outside of such projection forms an angle with the horizontal of less than 45 degrees.

(2)

Whenever a habitable room has a natural light area opening from the room to an enclosed porch, such area shall not be counted as a light area unless the enclosed porch has a natural light area of not less than three times the required light area opening from the room to the porch.

(Code 1973, § 12-77)