Performance Standards
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. |
Performance Standards
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. |