District of Columbia (DOB) (DC)

District of Columbia Authority Having Jurisdiction Solar permitting requirements

NEC Code Version2014

Fire Code Version2015 Building Code

Wet Stamps RequiredDigital Structural,Digital Electrical

Fire Setback Enforced1

Codes

NEC Code Version: 2014

Fire Code Version: 2015 Building Code

Code List

2017 DISTRICT OF COLUMBIA BUILDING CODE

2015 INTERNATIONAL BUILDING CODE

2017 DISTRICT OF COLUMBIA RESIDENTIAL CODE

2015 INTERNATIONAL RESIDENTIAL CODE

2017 DISTRICT OF COLUMBIA ELECTRICAL

2014 NATIONAL ELECTRICAL CODE

2017 DISTRICT OF COLUMBIA FUEL GAS CODE

2015 INTERNATIONAL FUEL GAS CODE

2017 DISTRICT OF COLUMBIA MECHANICAL CODE

2015 INTERNATIONAL MECHANICAL CODE

2017 DISTRICT OF COLUMBIA PLUMBING CODE

2015 INTERNATIONAL PLUMBING CODE

2017 DISTRICT OF COLUMBIA PROPERTY MAINTENANCE CODE

2015 INTERNATIONAL PROPERTY MAINTENANCE CODE

2017 DISTRICT OF COLUMBIA FIRE CODE

2015 INTERNATIONAL FIRE CODE

2017 DISTRICT OF COLUMBIA ENERGY CONSERVATION CODE

2015 INTERNATIONAL ENERGY CONSERVATION CODE

2017 DISTRICT OF COLUMBIA EXISTING BUILDING CODE

2015 INTERNATIONAL EXISTING BUILDING CODE

2017 DISTRICT OF COLUMBIA GREEN CONSTRUCTION CODE

2012 INTERNATIONAL GREEN CONSTRUCTION CODE

ASCE Code Specification: ASCE 7-16

SolarAPP+ & submittal

How Many Plansets Required: Other (See Submission Notes)

Revision Required: 0

Rough Inspection: None

New Planset Required For Module Swap: 0

Stamps

Ee Stamp Required On SLD: Yes

Wet Stamps Required: Digital Structural,Digital Electrical

Structural Calculations Required: Yes

Stamp Location On Plans: Top Right

Date On Stamps: Date Plans are Stamped

Fire setbacks

Fire Setback Enforced: 1

Setback Notes

Flat roofs: Setbacks on roof required to be at least the same as the max system height above the roof deck

Structural & loads

Wind Speed: 115

Snow Load: 30

Reducible Snow Load Allowed: 1

Max Attachment Spacing: 96

Structural Notes: Standard

Minimum Ground On Roof: #8

Electrical

AC Disconnect Required: Yes

Electrical Load Calcs Required: Derates

Allowed POI: Load Side Taps,Meter Adapter,Line Side Taps,PV Breaker

Panel Schedule Required: Partial Home Backup

Temperature Rating: 90

De Rating Ampacity: 0.91

Battery / ESS

Unique Battery Placards Needed: 0

ESS Notes: Standard

Separate ESS Disconnect Required: ESS Disconnect

ESS Elevation Detail Required: No

Plan set

Plan Set Requirements

For single and two family dwellings:

Each array shall be no greater than 150 ft. in either axis.
Locate roof access points, so that access ladders would not be placed in the plane of wall openings like doors or windows, or conflict with overhead obstruction.
Layouts on hip roofs shall provide a 3 ft. wide, clear access pathway, capable of supporting the live load of firefighters, from the eave to the ridge on each roof slope where modules are located.

Provide 2 such 3 ft. wide access pathways on each slope where modules are located on buildings with a single ridge.
These requirements shall not apply to roofs with slopes of 2:12 or less.

Verify compliance with IFC for facilitating smoke ventilation between arrays.

For other than single- and two-family dwellings:

Each array shall be no greater than 150 ft. in either axis (systems are not limited to one array).
Locate roof access points, so that access ladders would not be placed in the plane of wall openings like doors or windows, or conflict with overhead obstruction.
Provide 6 ft. min. clear perimeter around the edge of roof, or 4 ft. where either axis of building is not greater than 250 ft.
Access pathways should be capable of supporting the live load of firefighters.
Verify compliance with IFC for facilitating smoke ventilation between arrays.

Cover Page: Include the fire-rating of the roof and roof assembly as well as fire resistance rating of all roof penetrations sealing material.

Site

All solar submissions now require a plat from the Office of the Surveyors office into the supporting documents folder. Please make sure the plat is filled out signed and shows proposed exterior work

Please create ticket to Branch to have Plot ordered

Electrical Diagram: TAPS: Identify the length of tap wire, not to exceed 10 feet on 3 line diagram

Custom Placards Required: 0

Ground mount

Ground Mount Fencing Required: Mesh/Scrim