Vision Clearance Triangle Standards
| ||
---|---|---|
Right-of-Way Width
(feet)
|
Distance from Right-of-Way Intersection
(feet)
| |
Less than 50
|
50
| |
50
|
50
| |
51 to 60
|
40
| |
61 to 66
|
34
| |
67 to 82.5
|
15
| |
Greater than 82.5
|
15
|
Table 250-87F(10): Parking Layout Dimensions
| |||||||
---|---|---|---|---|---|---|---|
Parking Angle in Degrees (°)
| |||||||
Minimum Permitted Dimensions
(in feet)
|
0°
(parallel)
|
45°
|
60°
|
75°
|
90°
| ||
Stall width at parking angle (SW)
|
9
|
9
|
9
|
9
|
9
| ||
Stall width parallel to aisle (WP)
|
17.9
|
12.7
|
10.4
|
9.3
|
9
| ||
Stall depth to wall (D)
|
91
|
17.51
|
191
|
19.51
|
18.51
| ||
Stall depth to interlock (DI)
|
—
|
15.3
|
17.5
|
18.8
|
—
| ||
Stall length (including 1.5-foot curb overhang) (SL)
|
18.5
|
18.5
|
18.5
|
18.5
|
18.5
| ||
Aisle width (AW)
|
122
|
122
|
162
|
17.22
|
262
| ||
Throat length (right-of-way to parking angle) (T)
|
Refer to requirements in Table 250-87G(6)
| ||||||
Parking module width (PMW)
| |||||||
Wall to wall (single-loaded) (W1)
|
21
|
29.5
|
35
|
42.5
|
44.5
| ||
Wall to wall (double-loaded) (W2)
|
30
|
47
|
54
|
62
|
63
| ||
Wall to interlock (double-loaded) (W3)
|
—
|
44.8
|
52.5
|
61.3
|
—
| ||
Interlock to interlock (double-loaded) (W4)
|
—
|
42.6
|
51
|
60.6
|
—
|
1
|
Parking spaces located behind an enclosed garage and located
directly off a through aisle shall be at least 30 feet deep.
| |
2
|
This dimension represents (AW) for one-way traffic. For two-way
traffic, add eight feet to a maximum (AW) of 26 feet.
|
Table 250-87G(6): Minimum Permitted Throat Length
| |||||
---|---|---|---|---|---|
Type of Access Street
| |||||
Land Use
|
Type
|
Scale of Development
|
Collector
(feet)
|
Arterial
(feet)
| |
Residential
|
Any residential
|
0 to 100 dwelling units
|
25
|
—
| |
101 to 200 dwelling units
|
50
|
75
| |||
201 or more dwelling units
|
75
|
125
| |||
Commercial
|
Office
|
0 to 50,000 gross square feet
|
25
|
50
| |
50,000 to 100,000 gross square feet
|
25
|
75
| |||
100,000 to 200,000 gross square feet
|
50
|
100
| |||
200,001 or greater gross square feet
|
100
|
150
| |||
In-vehicle sales
|
0 to 2,000 gross square feet
|
25
|
75
| ||
2,001 or greater gross square feet
|
50
|
100
| |||
Indoor entertainment
|
0 to 15,000 gross square feet
|
25
|
50
| ||
15,000 or greater gross square feet
|
25
|
75
| |||
Commercial lodging
|
0 to 150 rooms
|
25
|
75
| ||
151 or more rooms
|
25
|
100
| |||
Other commercial uses
|
0 to 25,000 gross square feet
|
25
|
50
| ||
25,001 to 100,000 gross square feet
|
25
|
75
| |||
100,000 to 500,000 gross square feet
|
50
|
100
| |||
500,001 or greater gross square feet
|
75
|
200
| |||
Industrial
|
All industrial uses
|
0 to 100,000 gross square feet
|
25
|
50
| |
100,001 to 500,000 gross square feet
|
50
|
100
| |||
500,000 or greater gross square feet
|
50
|
200
| |||
All other uses
|
6 or more parking spaces
|
25
|
50
|
Table 250-88D: Loading Standards
| ||||||
---|---|---|---|---|---|---|
Design Vehicle
|
Length in Feet
|
Dock Angle (a)
|
Clearance in Feet (D)
|
Berth Width in Feet (W)
|
Apron Space in Feet (A)
|
Total Offset in Feet (F)
|
WB-40
|
50
|
90°
|
50
|
10
|
63
|
113
|
12
|
56
|
106
| ||||
14
|
52
|
102
| ||||
60°
|
44
|
10
|
46
|
90
| ||
12
|
40
|
84
| ||||
14
|
35
|
79
| ||||
45°
|
36
|
10
|
37
|
73
| ||
12
|
32
|
68
| ||||
14
|
29
|
65
| ||||
WB-50
|
55
|
90°
|
55
|
10
|
77
|
132
|
12
|
72
|
127
| ||||
14
|
67
|
122
| ||||
60°
|
48
|
10
|
55
|
103
| ||
12
|
51
|
99
| ||||
14
|
46
|
94
| ||||
45°
|
39
|
10
|
45
|
84
| ||
12
|
40
|
79
| ||||
14
|
37
|
76
|
D
|
=
|
K/f, where D = displacement in inches
| |
---|---|---|---|
K
|
=
|
a constant to be determined by reference to the tables below
| |
f
|
=
|
the frequency of vibration transmitted through the ground, cycles
per second
|
Location
|
K
| ||
---|---|---|---|
On or beyond any adjacent lot line
| |||
Continuous
|
0.015
| ||
Impulsive
|
0.030
| ||
Less than 8 pulses per 24-hour period
|
0.075
| ||
On or beyond any residence district boundary line
| |||
Continuous
|
0.003
| ||
Impulsive
|
0.006
| ||
Less than 8 pulses per 24-hour period
|
0.015
|
Location
|
K
| ||
---|---|---|---|
On or beyond any adjacent lot line
| |||
Continuous
|
0.030
| ||
Impulsive
|
0.060
| ||
Less than 8 pulses per 24-hour period
|
0.150
| ||
On or beyond any residence district boundary line
| |||
Continuous
|
0.003
| ||
Impulsive
|
0.006
| ||
Less than 8 pulses per 24-hour period
|
0.015
|
Location
|
K
| ||
---|---|---|---|
On or beyond any residence district boundary line
| |||
Continuous
|
0.003
| ||
Impulsive
|
0.006
| ||
Less than 8 pulses per 24-hour period
|
0.015
|
Table 250-92C(1): Maximum Permitted Noise Level at Lot
Line for Noise Radiated Continuously*
| ||
---|---|---|
Zoning District
|
Increase in Noise Level over Ambient Level
| |
RH, SR-2, SR-3, SR-4, TR-6, MR-8, MR-10
|
Plus 3 dBA
| |
NO, PO, PB, NB, GB, CB, PI
|
Plus 5 dBA
| |
GI, HI
|
Plus 8 dBA
|
*
|
If the noise is not smooth and continuous or is present only
during daytime hours, one or more of the corrections in Table 250-92C(2)
below shall be added to or subtracted from each of the decibel levels
given above in Table 250-92C(1).
|
Table 250-92C(2): Adjustment Factors for Maximum Noise
Levels
| ||
---|---|---|
Type of Operation in Character of Noise
|
Correction in Decibels
| |
Daytime operation only
|
Plus 5
| |
Noise source operates less than 20% of any one-hour period
|
Plus 5*
| |
Noise source operates less than 5% of any one-hour period
|
Plus 10*
| |
Noise source operates less than 1% of any one-hour period
|
Plus 15*
| |
Noise of impulsive character (hammering, etc.)
|
Minus 5
| |
Noise of periodic character (hum, speech, etc.)
|
Minus 5
|
*
|
Apply only one of these corrections.
|