Statutes, codes, and regulations
District Of Columbia Administrative Code
Title 12 - CONSTRUCTION CODES SUPPLEMENT OF 2017Subtitle 12-K - GREEN CONSTRUCTION CODE SUPPLEMENT OF 2017
Chapter 12-K4 - SITE DEVELOPMENT AND LAND USE
Rule 12-K409 - SITE LIGHTING

D.C. Mun. Regs. tit. 12, r. 12-K409

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Current through Register Vol. 71, No. 49, December 6, 2024
Rule 12-K409 - SITE LIGHTING

Strike Section 409.1 of the International Green Construction Code in its entirety and insert new Section 409.1 in the Green Construction Code in its place to read as follows:

409.1

Light pollution control. Uplight, light trespass, glare, and color temperature shall be limited for all exterior lighting equipment as described in Sections 409.2, 409.3, and 409.4. The provisions of this section shall only apply to new construction and Level 3 alterations complying with the applicable requirements of the Existing Building Code.

Exceptions: Lighting used for the following exterior applications is exempt where equipped with a control device independent of the control of the non-exempt lighting:

1. Specialized signal, directional signage, and marker lighting associated with transportation or premises way- finding.
2. Signage that complies with lighting requirements set forth in regulations adopted pursuant to the Sign Legislation.
3. Lighting integral to equipment or instrumentation and installed by its manufacturer.
4. Theatrical purposes, including performance, stage, film production, and video production.
5. Athletic playing areas where lighting is equipped with hoods or louvers for glare control, provided that they are fully shielded and emit no light above the horizontal plane of the hood.
6. Temporary lighting.
7. Lighting for industrial production, material handling, transportation sites, and associated storage areas where lighting is equipped with hoods or louvers for glare control, provided that they are fully shielded and emit no light above the horizontal plane of the hood.
8. Theme elements in theme and amusement parks.
9. Roadway lighting required by governmental authorities.
10. Lighting used to highlight features of public monuments and registered landmark structures.
11. Lighting classified for and used in hazardous areas.
12. Lighting for swimming pools and water features.
13. Lighting for the national flag in lighting zones 2, 3 and 4.
14. Required exit signs and exterior means of egress illumination.

Strike Section 409.1.1 and Table 409.1.1 of the International Green Construction Code in their entirety and insert new Section 409.1.1 and Table 409.1.1 in the Green Construction Code in their place to read as follows:

409.1.1

Exterior lighting zones. The lighting zone for the building site shall be determined from Table 409.1.1 as clarified by Administrative Bulletins.

TABLE 409.1.1 EXTERIOR LIGHTING ZONES

LIGHTING ZONE

DESCRIPTION

1

Developed areas of national parks, state parks, forest land and rural areas

2

Areas predominantly consisting of residential zoning, neighborhood business districts, light industrial with limited nighttime use and residential mixed use areas

3

All other areas (not included in other zones)

4

High-activity commercial districts

Strike Section 409.2 and Table 409.2 of the International Green Construction Code in their entirety and insert new Section 409.2 and Table 409.2 in the Green Construction Code in their place to read as follows:

409.2

Uplight. Exterior lighting shall comply with the requirements of Table 409.2 for the exterior lighting zones (LZ) appropriate to the building site.

Exceptions: Lighting used for the following exterior applications shall be exempt from the requirements of Table 409.2:

1. Lighting for building facades, landscape features, and public monuments in exterior lighting zones 3 and 4.
2. Lighting for building facades in exterior lighting zone 2.
3. Lighting installed below canopies.
4. Lighting for flag poles.

TABLE 409.2 UPLIGHT RATINGS a, b

LIGHTING ZONE (LZ) 1 2 3 4

Maximum luminaire uplight rating

U0

U1

U2

U3

a. Uplight ratings (U) are defined by IESNA TM-15-07 Addendum A.
b. The rating shall be determined by the actual photometric geometry in the specified mounting orientation.

[no change to Section 409.3]

Insert a new Section 409.4 in the Green Construction Code to read as follows:

409.4

Color Temperature. Maximum color temperature for lights complying with Section 409 shall be 3000 degrees Kelvin or lower.

D.C. Mun. Regs. tit. 12, r. 12-K409

Final Rulemaking published at 67 DCR 5679 (5/29/2020)