In order to encourage greater flexibility in design and more attractive arrangements of buildings and greater utilization of open spaces, yard regulations for apartment dwellings are hereby established for a single multifamily building and yard regulations for locating several buildings within a group development.
The yards of multifamily buildings shall be related to the space within the dwelling units as well as the yards. Buildings shall be arranged so as to assure privacy between adjacent buildings and intersecting wings of buildings, from streets, parking and recreation areas in accordance with the following:
(a) Definitions. The terms in this section are defined as follows:
(1) "Single development" means a development of one multifamily building on one lot coordinated with the surrounding neighborhood and fronting on a dedicated street.
(2) "Group development" means a development of more than one multifamily building on a parcel planned as a unit and coordinated with the surrounding neighborhood.
(3) "Main wall" means any exterior wall of a multifamily building containing the principal windows of a living, dining and/or sleeping room or rooms.
(4) "End or secondary wall" means any exterior wall of a multifamily building other than a main wall and containing secondary windows required for ventilation and not intended to provide direct views.
(5) "Overlapping walls" means that portion of the exterior walls which are directly opposing when two buildings, parallel or within thirty degrees of being parallel, face each other across an open yard or court.
(b) Front Yard Depth. The front yard depth, or setback, for multifamily buildings, in single development or group development, shall be in accordance with the following:
(1) Dedicated street ROW: 100 feet.
(2) Development area street: fifty feet.
(c) Distance Between Facing and Overlapping Buildings. The distance between facing and overlapping buildings or parts thereof in a group development of multifamily buildings shall vary in direct relation to the length and height of buildings. Such minimum distance shall be determined by the formula:
Minimum Distance = LA+LB+HA+HB
/
F
The elements of the formula are illustrated in Appendix I and defined as follows:
(1) "Minimum distance" means the required minimum horizontal distance between any wall of building A and the nearest wall of building B or the vertical prolongation of either.
(2) "LA" means the total length of building A which, for the purposes of the formula, is defined as the maximum length of the portion or portions of any wall or walls of building A from which lines drawn perpendicular to the face of such wall or walls will intersect any wall of building B.
(3) "LB" means the total length of building B which, for the purposes of the formula, is defined as the maximum length of the portion or portions of any wall or walls of building B from which lines drawn perpendicular to the face of such wall or walls will intersect any wall of building A.
(4) "HA" means the height of building A.
(5) "HB" means the height of building B.
(6) "F" means the divisor factor. In Multiple Residence (Apartment) Districts, the divisor factor is four. Provided, however, the minimum distance between main walls of separate buildings shall not be less than forty feet.
(d) Distance in Angular Arrangements. The minimum distance between buildings in angular arrangements of thirty degrees to sixty degrees shall be determined by the formula:
Minimum Distance = 2LB+HA+HB-k / F
The elements of the formula are as defined above and are shown on the illustration Appendix I. "k" in the formula varies as the sine of 2n where n is the angle from building B to building A or extensions thereof.
Where n is: 30 degrees to 34 degrees - k = 10 feet
35 degrees to 39 degrees - k = 20 feet
40 degrees to 50 degrees - k = 25 feet
51 degrees to 55 degrees - k = 20 feet
56 degrees to 60 degrees - k = 10 feet
"F" means the divisor factor. In Multiple Residence (Apartment) Districts, the divisor factor is four.
(e) Distances Between Walls of Court Arrangements. Such minimum distances shall be determined by applying the formula set forth in subsection (c) hereof, to each set of facing walls. In arrangements of parallel walls with offset sections, the distance between the corresponding parallel walls shall be determined by such formula. The elements of the formula are shown on the illustration Appendix I. "F" means the divisor factor. In Multiple Residence (Apartment) Districts, the divisor factor is four.
(f) Distance Between Nonoverlapping Walls. Where walls of two multifamily buildings do not directly face each other or do not overlap, that is, where lines drawn perpendicular from the face of any wall of any one building will not intersect the face of any wall of another multifamily building, the minimum horizontal distance between such buildings shall be not less than one-half of the combined height of the two buildings. Such minimum distance shall be determined by the formula:
Minimum Distance = HA+HB / 2
(g) Distance Between Building and Boundary Line of the Multifamily Development Area. The distance between buildings and boundary lines of a multifamily development area or part thereof, in a single development or group development and any side or rear lot line of the parcel or development area boundary shall vary in direct relation to the length and height of the building. Such minimum distance shall be as determined by the formula:
Building Parallel to Lot Line: 2(LL)+HA / F
Building at Angle to Lot Line: 2(LL)+HA-K / F
The elements of such formula are shown on the illustration Appendix I and defined as follows:
(1) "Minimum distance" means the minimum required horizontal distance between any wall of a building and the nearest side or rear lot line or boundaries of the parcel or development area.
(2) Where the building is parallel to the lot line, "LL" means the maximum length of the side or rear lot line which can be intersected by lines drawn perpendicular from the face or faces of any wall or walls of the buildings.
(3) Where the building is at an angle to the lot line, "LL" means the maximum length of the side or rear lot line from which lines drawn perpendicular will intersect any wall of the building.
(4) "HA" means the height of building A.
(5) "K" in the formula varies as the sine of 2n where n is the angle from the lot line to the building. The value of "K" is set forth in subsection (d) hereof.
(6) "F" means the divisor. In Multiple Residence (Apartment) Districts, the divisor factor is four.
(Ord. 90-125. Passed 5-21-91.)