CIDQ IDPX Exam - Topic 5 Question 15 Discussion

Actual exam question for CIDQ's IDPX exam

Question #: 15
Topic #: 5

[All IDPX Questions]

What is the MINIMUM illumination level at the walking surface for a means of egress?

A1 footcandle [10.76 lux]

B2 footcandles [21.53 lux]

C5 footcandles [53.82 lux]

D9 footcandles [96.88 lux]

Show Suggested Answer

Suggested Answer: A

by Stephen at Jan 05, 2026, 05:16 AM

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Kasandra

20 days ago

D is too much. Overkill for egress.

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Krystal

25 days ago

C seems right. Better visibility.

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Aja

1 month ago

I prefer B. Safety is key.

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Samira

1 month ago

I think it's A. Just enough light.

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Willetta

1 month ago

Nope, definitely 1 footcandle. It's a code thing!

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Coleen

2 months ago

Wait, only 1 footcandle? That seems too low!

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Goldie

2 months ago

I thought it was higher, like 5 footcandles?

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Joanna

2 months ago

Totally agree, 1 footcandle is the minimum.

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Lisbeth

2 months ago

It's 1 footcandle for egress!

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Corinne

2 months ago

I'm going to have to go with the classic B) 2 footcandles [21.53 lux]. Anything less and people might start tripping in the dark.

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Winfred

2 months ago

Haha, I bet the answer is D) 9 footcandles [96.88 lux]. Gotta keep those people on their toes, right?

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Rory

3 months ago

Ah, this one's tricky. I'm going to go with A) 1 footcandle [10.76 lux] just to be safe.

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Jesusita

3 months ago

Hmm, I'm not sure. I'm leaning towards C) 5 footcandles [53.82 lux].

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Gail

3 months ago

I think the answer is B) 2 footcandles [21.53 lux].

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Alishia

4 months ago

I’m pretty confident it’s 1 footcandle, but I also recall something about higher levels for specific areas.

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Dana

4 months ago

I feel like the answer might be 5 footcandles, but I could be mixing it up with another standard.

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Ricarda

4 months ago

I remember practicing a question about egress lighting, and I think it was 2 footcandles.

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Olive

4 months ago

I think the minimum illumination level is 1 footcandle, but I’m not entirely sure.

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Wade

4 months ago

Hmm, I'm not sure about the exact number, but I know it's important to have adequate lighting for safe evacuation. I'll try to reason through the options and see if I can eliminate any of them.

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Claudia

4 months ago

Wait, I'm a little confused. Is it 1 footcandle or 2 footcandles? I remember it being a specific number, but I can't recall which one. I'll have to think this through step-by-step.

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Skye

5 months ago

Ah, I've got this one! The minimum illumination level for a means of egress is 1 footcandle, or 10.76 lux. I'm confident that's the correct answer.

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Sherell

5 months ago

Okay, I know this is an important safety requirement, so I need to make sure I get this right. Let me review the options and see if I can eliminate any of them.

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Alonso

5 months ago

Hmm, I think I remember learning about minimum illumination levels for means of egress, but I'm not totally sure. I'll have to think this through carefully.

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Celeste

15 days ago

I believe it's 1 footcandle.

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