EasyAssistant Engineer (Electrical), Class-2, Road and Building Department2025✓ Editorially verified

What is the typical angle of inclination for a commercial escalator as per general safety standards?

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Answer & Explanation

Correct AnswerB. 30 degrees

Quick Explanation

A common commercial escalator inclination is about 30° to the horizontal. This provides a practical compromise between vertical rise, passenger comfort, safety and floor-space requirements.

Formula / Key Relation

Typical commercial escalator inclination ≈ 30°

Detailed Explanation

Concept & Reasoning

Escalator geometry is standardized around safe tread orientation and passenger stability. Steeper arrangements can reduce plan length but are less comfortable and may fall outside common public-use design practice. The 30° value is the standard exam answer among the choices.

How to Solve It in the Exam

Escalator → remember 30°.

Important Exam Point

Do not confuse escalator slope with stair or moving-walkway limits.

Related Revision Path

This question sits in the revision path Building Electrical Services → Vertical Transportation → Escalators .

Commercial Escalator Inclination explanatory diagram

Quick Trick

Escalator → remember 30°.

Common Mistake

Choosing 45° because ordinary stairs can visually appear that steep.

Exam Tip

Do not confuse escalator slope with stair or moving-walkway limits.

SEO + Knowledge GraphRelated PYQs & Exam ContextExam path, knowledge path and deeper practice links.

Exam Path

Knowledge Path

Study concept · Commercial Escalator Inclination →Practice concept Practice topic

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Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 281