Table 1. Shielding and Enclosure Requirements
| |||
---|---|---|---|
Fixture Lamp Type
|
Shielding
|
Enclosure
| |
Mercury vapor
|
Fully shielded
|
None
| |
Low pressure sodium
|
Fully shielded
|
None
| |
High pressure sodium
|
Fully shielded
|
None
| |
Metal halide
|
Fully shielded
|
Yes
| |
Fluorescent
|
Fully shielded
|
Yes
| |
Quartz
|
Fully shielded
|
None
| |
Incandescent greater than 160 watt
|
Fully shielded
|
None
| |
Incandescent 150 watt or less
|
Partial shielding
|
None
| |
Glass tube filled with argon, krypton
|
None
|
None
|
Table 2. Foot-candle Standards
| |||
---|---|---|---|
Location
|
Average Maintained Foot-candles
|
Uniformity Ratio
(avg:min)
| |
Roadways, local, residential
|
0.4
|
6:1
| |
Roadways, local, commercial
|
0.9
|
6:1
| |
Walkways and bikeways
|
0.5
|
5:1
| |
Building entrances and exits
|
5.0
|
N/A
| |
Outdoor storage areas
|
8.0
|
N/A
|
Table 3. Illumination Standards in Foot-candles for Structures
and Their Parking Areas
| ||||
---|---|---|---|---|
Residential
|
Commercial
|
Other
| ||
Minimum initial level at any point on the parking area
|
0.07
|
0.5
|
0.3
| |
Average initial level
|
0.35
|
1.0
|
0.5
| |
Maximum initial level 5 feet from the base of a light standard
|
3.0
|
8.0
|
5.0
|
Parking Table
| |||||||
---|---|---|---|---|---|---|---|
A
|
B
|
C
|
D
|
E
|
F
|
G
| |
45°
|
9.0'
|
19.7'
|
12.5'
|
12.7'
|
51.9'
|
45.6'
| |
60°
|
9.0'
|
21.0'
|
17.5'
|
10.5'
|
59.5'
|
55.0'
| |
90°
|
9.0'
|
19.0'
|
22.0'
|
9.0'
|
60.0'
|
—
|
A.
|
Parking angle
|
E.
|
Curb length per car
| |
B.
|
Stall width
|
F.
|
Curb to curb
| |
C.
|
19' minimum stall to curb
|
G.
|
Center to center width of double row with aisle between
| |
D.
|
Aisle width*
|
|
*Additional width may be required where the aisle serves as
principal means of access to on-site buildings or structures.
|
|
Number of Spaces
|
Disabled Parking Spaces Required (Minimum)
|
---|---|---|
|
1 — 10
|
0
|
|
11 — 50
|
1
|
|
51 — 100
|
2
|
|
101 — 500
|
3
|
|
Over 500
|
2 per building entry
|
|
Floor Area in Square Feet
|
Loading Spaces Required
|