CLD Lighting Design Codes, Standards & Regulations 2

Question 1

Which ASHRAE/IES standard provides energy efficiency requirements for lighting in commercial buildings?

Accepted Answer

ASHRAE 90.1

Answer

ASHRAE 90.1 sets lighting power density limits and controls requirements for commercial buildings.

Question 2

Under ASHRAE 90.1, what is the primary metric used to measure a lighting system's energy efficiency compliance?

Accepted Answer

Lighting Power Density (LPD) in W/ft²

Answer

Lighting Power Density (LPD), expressed in watts per square foot, is the key compliance metric under ASHRAE 90.1.

Question 3

The IES RP-1 document specifically addresses lighting recommendations for which application?

Accepted Answer

Office lighting

Answer

IES RP-1 is the Recommended Practice for Office Lighting, providing illuminance targets and quality guidelines.

Question 4

Which section of the International Building Code (IBC) primarily governs means-of-egress lighting levels?

Accepted Answer

Section 1008

Answer

IBC Section 1008 specifies minimum illuminance levels (1 fc average) for egress paths during normal and emergency conditions.

Question 5

When a jurisdiction adopts the 2021 IECC, which lighting control is typically required for all interior spaces greater than 5,000 ft²?

Accepted Answer

Automatic shutoff controls

Answer

The 2021 IECC mandates automatic shutoff controls (occupancy or scheduling) for interior spaces exceeding 5,000 sq ft.

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