(c) Lots of an area greater than 4,000 m2 (43,057.05 sq. ft.) may be developed to a maximum floor area ratio of 1.9. (3) USABLE OPEN SPACE: A minimum of 40 percent of each lor, excluding any portion of the lot used for parking and vehicular circulation, shal! be usable open space. (4) LOT COVERAGE: (a) Maximum lot coverage on iots less than 1,700 m2 (18,299.24 sq. ft.) im area shall be 55 percent. (b) Maximum fot coverage on lots having an area 1,700 m2 (18,299.24 Sq. ff.) or greater shall be 45 percent, provided that where a building on a lot exceeds six storeys in height, maximum fot coverage on that lot shal! be 35 percent. (5) FRONT YARD: cd (a) On lots of an area of 1,700 m@ (18,299.24 sq. ft.) or jess, a front yard is required of not less than 7.5 m@ (24.60 ft.) in depth. (b) On lots having an area greater than 1,700 m4 (18,299.24 sq. ft.) a front yard is required in accordance with the following table: Width of Building © Required Back as percent of Lot Width Yard Depth over 50% ~5 x height of building 41% to 50% 045 x height of building 31% to 40% 4 x height of building 20% to 30% o35 x height of buitding less than 20% o3 x height of building provided that in no case shail the front yard be less than 7.5 m (24.6 ft.) in depth.