S
|
=
|
IL (0.00229)
| |
A
|
where
|
S = Average natural ground slope of the total project area in
percent
|
I = The contour interval in feet. (For parcels 20 acres or larger,
the maximum contour interval shall be 40 feet. For parcels of less
than 20 acres, contours shall meet the standards of Title 17 of this
Code, unless the Director of Community Development finds a larger
contour interval will provide reasonable accuracy for purposes of
determining the average slope of the parcel under consideration.)
|
L = the total length of all contour lines within the total project,
in feet.
|
A = the gross area of the project, in acres.
|
0.00229 = a constant used to convert square feet into acres
x 100%
|
or
|
1 acre
|
x
|
100%
| |
43,560 sq. ft.
|
The calculated average natural slope shall be rounded to the
nearest whole number.
|
|
SD-1
|
SD-2
|
SD-3
|
---|---|---|---|
Minimum lot size
|
See Tables 1, 2, 3 – Slope Density Standards
| ||
Minimum lot width
|
150 ft.
|
200 ft.
|
250 ft.
|
Minimum lot depth
|
150 ft.
|
200 ft.
|
250 ft.
|
Minimum front yard setback
|
20 ft.
|
20 ft.
|
20 ft.
|
Minimum rear yard setback
|
10 ft.
|
10 ft.
|
10 ft.
|
Minimum street side yard setback
|
20 ft.
|
20 ft.
|
20 ft.
|
Minimum interior side yard setback
|
10 ft.
|
10 ft.
|
10 ft.
|
Maximum height
|
25 ft.
|
25 ft.
|
25 ft.
|
Required parking
|
2 spaces per dwelling unit*
|
*
|
When any accessory building is located less than six feet from
a main residential building, the floor area of such accessory building
shall be included in the floor area calculation of the main residential
building. The accessory building shall still be subject to all accessory
building standards.
|
TABLE 1
SLOPE DENSITY STANDARDS SD-1*
| |||||
---|---|---|---|---|---|
(Density Range of 1 acre per dwelling unit to 20 acres per dwelling
unit)
| |||||
Slope Category in Percent
|
Gross Area Per Dwelling Unit in Acres
|
Min. Lot Area per Dwelling Unit in Acres
|
Slope Category in Percent
|
Gross Area per Dwelling Unit in Acres
|
Min. Lot Area per Dwelling Unit in Acres
|
|
(1)
|
(2)
|
|
(1)
|
(2)
|
0
|
1.00
|
.92
|
25
|
1.90
|
1.75
|
1
|
1.02
|
.94
|
26
|
1.98
|
1.82
|
2
|
1.04
|
.95
|
27
|
2.05
|
1.89
|
3
|
1.06
|
.97
|
28
|
2.14
|
1.97
|
4
|
1.08
|
.99
|
29
|
2.23
|
2.05
|
5
|
1.10
|
1.02
|
30
|
2.33
|
2.15
|
6
|
1.13
|
1.04
|
31
|
2.43
|
2.24
|
7
|
1.15
|
1.06
|
32
|
2.55
|
2.35
|
8
|
1.18
|
1.08
|
33
|
2.68
|
2.48
|
9
|
1.21
|
1.11
|
34
|
2.82
|
2.61
|
10
|
1.23
|
1.13
|
35
|
2.99
|
2.75
|
11
|
1.26
|
1.16
|
36
|
3.16
|
2.93
|
12
|
1.30
|
1.19
|
37
|
3.37
|
3.12
|
13
|
1.33
|
1.22
|
38
|
3.60
|
3.33
|
14
|
1.36
|
1.25
|
39
|
3.86
|
3.58
|
15
|
1.40
|
1.29
|
40
|
4.17
|
3.87
|
16
|
1.44
|
1.32
|
41
|
4.52
|
4.20
|
17
|
1.48
|
1.36
|
42
|
4.95
|
4.61
|
18
|
1.52
|
1.40
|
43
|
5.46
|
5.09
|
19
|
1.56
|
1.44
|
44
|
6.10
|
5.70
|
20
|
1.61
|
1.48
|
45
|
6.90
|
6.46
|
21
|
1.67
|
1.53
|
46
|
7.94
|
7.46
|
22
|
1.72
|
1.58
|
47
|
9.35
|
8.83
|
23
|
1.78
|
1.64
|
48
|
11.36
|
10.81
|
24
|
1.84
|
1.69
|
49
|
14.49
|
13.94
|
|
|
|
50 & Over
|
20.00
|
19.61
|
* The values in this table are derived from the equations:
| ||
(1)
|
Gross Area Per Dwelling Unit in Acres
|
1
|
1.0 – 0.019S
| ||
(2)
|
Minimum Lot Area per Dwelling Unit in Acres
|
1
|
1.089 – 0.02076S
| ||
Where S is the average natural ground slope in percent.
|
TABLE 2
SLOPE DENSITY STANDARDS SD-2*
| |||||
---|---|---|---|---|---|
(Density Range of 2 acres per dwelling unit to 20 acres per
dwelling unit)
| |||||
Slope Category in Percent
|
Gross Area Per Dwelling Unit in Acres
|
Min. Lot Area per Dwelling Unit in Acres
|
Slope Category in Percent
|
Gross Area per Dwelling Unit in Acres
|
Min. Lot Area per Dwelling Unit in Acres
|
|
(1)
|
(2)
|
|
(1)
|
(2)
|
0
|
2.00
|
1.85
|
25
|
3.64
|
3.38
|
1
|
2.04
|
1.89
|
26
|
3.76
|
3.50
|
2
|
2.07
|
1.92
|
27
|
3.89
|
3.62
|
3
|
2.11
|
1.96
|
28
|
4.03
|
3.76
|
4
|
2.16
|
2.00
|
29
|
4.18
|
3.90
|
5
|
2.20
|
2.04
|
30
|
4.35
|
4.06
|
6
|
2.24
|
2.08
|
31
|
4.52
|
4.22
|
7
|
2.29
|
2.12
|
32
|
4.72
|
4.40
|
8
|
2.34
|
2.17
|
33
|
4.92
|
4.60
|
9
|
2.39
|
2.21
|
34
|
5.15
|
4.82
|
10
|
2.44
|
2.26
|
35
|
5.41
|
5.06
|
11
|
2.49
|
2.31
|
36
|
5.68
|
5.32
|
12
|
2.55
|
2.37
|
37
|
5.99
|
5.61
|
13
|
2.61
|
2.42
|
38
|
6.33
|
5.94
|
14
|
2.67
|
2.48
|
39
|
6.71
|
6.31
|
15
|
2.74
|
2.54
|
40
|
7.14
|
6.72
|
16
|
2.81
|
2.61
|
41
|
7.63
|
7.19
|
17
|
2.88
|
2.68
|
42
|
8.20
|
7.74
|
18
|
2.96
|
2.75
|
43
|
8.85
|
8.37
|
19
|
3.04
|
2.82
|
44
|
9.62
|
9.12
|
20
|
3.13
|
2.90
|
45
|
10.53
|
10.01
|
21
|
3.22
|
2.99
|
46
|
11.63
|
11.10
|
22
|
3.31
|
3.08
|
47
|
12.99
|
12.45
|
23
|
3.41
|
3.17
|
48
|
14.71
|
14.17
|
24
|
3.52
|
3.28
|
49
|
16.95
|
16.45
|
|
|
|
50 & Over
|
20.00
|
19.61
|
* The values in this table are derived from the equations:
| ||
(1)
|
Gross Area Per Dwelling Unit in Acres
|
1
|
0.5 – 0.009S
| ||
(2)
|
Minimum Lot Area per Dwelling Unit in Acres
|
1
|
0.54 – 0.00978S
| ||
Where S is the average natural ground slope in percent.
|
TABLE 3
SLOPE DENSITY STANDARDS SD-3*
| |||||
---|---|---|---|---|---|
(Density Range of 5 acres per dwelling unit to 20 acres per
dwelling unit)
| |||||
Slope Category in Percent
|
Gross Area Per Dwelling Unit in Acres
|
Min. Lot Area per Dwelling Unit in Acres
|
Slope Category in Percent
|
Gross Area per Dwelling Unit in Acres
|
Min. Lot Area per Dwelling Unit in Acres
|
|
(1)
|
(2)
|
|
(1)
|
(2)
|
0
|
5.00
|
4.59
|
25
|
8.00
|
7.43
|
1
|
5.08
|
4.66
|
26
|
8.20
|
7.62
|
2
|
5.15
|
4.73
|
27
|
8.40
|
7.82
|
3
|
5.24
|
4.81
|
28
|
8.62
|
8.03
|
4
|
5.32
|
4.89
|
29
|
8.85
|
8.25
|
5
|
5.41
|
4.97
|
30
|
9.09
|
8.49
|
6
|
5.49
|
5.05
|
31
|
9.35
|
8.74
|
7
|
5.59
|
5.14
|
32
|
9.62
|
9.00
|
8
|
5.68
|
5.23
|
33
|
9.90
|
9.28
|
9
|
5.78
|
5.32
|
34
|
10.20
|
9.57
|
10
|
5.88
|
5.42
|
35
|
10.53
|
9.89
|
11
|
5.99
|
5.52
|
36
|
10.87
|
10.23
|
12
|
6.10
|
5.62
|
37
|
11.23
|
10.59
|
13
|
6.21
|
5.73
|
38
|
11.63
|
10.98
|
14
|
6.33
|
5.84
|
39
|
12.05
|
11.40
|
15
|
6.45
|
5.96
|
40
|
12.50
|
11.84
|
16
|
6.58
|
6.08
|
41
|
12.99
|
12.33
|
17
|
6.71
|
6.20
|
42
|
13.51
|
12.87
|
18
|
6.85
|
6.33
|
43
|
14.08
|
13.44
|
19
|
6.99
|
6.47
|
44
|
14.71
|
14.08
|
20
|
7.14
|
6.61
|
45
|
15.34
|
14.77
|
21
|
7.30
|
6.76
|
46
|
16.13
|
15.54
|
22
|
7.46
|
6.92
|
47
|
16.95
|
16.39
|
23
|
7.63
|
7.08
|
48
|
17.46
|
17.34
|
24
|
7.81
|
7.25
|
49
|
18.87
|
18.40
|
|
|
|
50 & Over
|
20.00
|
19.61
|
* The values in this table are derived from the equations:
| ||
(1)
|
Gross Area Per Dwelling Unit in Acres
|
1
|
0.2 – 0.003S
| ||
(2)
|
Minimum Lot Area per Dwelling Unit in Acres
|
1
|
0.218 – 0.00334S
| ||
Where S is the average natural ground slope in percent.
|