A Zoning Ordinance cannot provide for all conceivable situations to which it must apply. Provisions must be made to balance the strict application of the ordinance with the purposes and intent established by the ordinance. The primary function of the BZA is to vary the specific terms of the zoning ordinance so that practical development problems of the community may be met within the provisions of the ordinance. In effect, the board acts as a "safety valve." Without this body to decide on such matters, solutions to these development problems would have to be accomplished by amendment of the ordinance or through a lawsuit.