CELE Surveying (Geomatics) — Spiral (Transition) CurvesSlides
Visual slide deck for Spiral (Transition) Curves. Perfect for reviewers who prefer seeing concepts laid out with diagrams and bullet points rather than long paragraphs. Built specifically for CELE Surveying (Geomatics) aspirants preparing for the 2026 cycle.
Exam context
For the Civil Engineer Licensure Examination, Professional Regulation Commission (PRC) — Board of Civil Engineering tests Surveying (Geomatics) under a "Core" label, with Spiral (Transition) Curves in the 6th slot across 9 chapters. CELE candidates must clear the 70% weighted average, no sub-test below 50% cut on the 2026 paper, which draws about a meaningful share of Surveying (Geomatics) questions. Date to watch: May and November 2026.
Spiral (Transition) Curves - Slides
Slides
Introduction to Spiral (Transition) Curves
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S1
Why a Spiral is Needed: Physical Principles
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S2
Geometric Properties of the Spiral
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S3
The Spiral Angle Formula
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Worked Example 1: Calculating Spiral Angle
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Spiral Elements: Throw (Tangent Offset)
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Spiral Elements: Shift (p)
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Worked Example 2: Spiral Throw and Shift
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Deflection Angle Variation Along the Spiral
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Worked Example 3: Deflection Angle at a Point
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Superelevation and Design Speed
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S11
Worked Example 4: Superelevation Demand
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Superelevation Development and Spiral Length
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Worked Example 5: Minimum Spiral Length for Superelevation
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NSCP 2015 Geometric Design Standards for Curves
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Common Pitfalls and Exam Tips
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Summary: Key Formulas and Relationships
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Practice Problem Set: Levels 1–3
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Stored In
chapter_slides
Slide Count
18
Summary Only
true
Previous chapter
Horizontal Curves (Simple, Compound, Reverse)
Next chapter
Vertical (Parabolic) Curves
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