Development of Surface | Problem 3 | Triangular Pyramid

Welcome back friends 👋
This is Manas Patnaik, your friend and tutor!

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In this session, we’re solving one of the most interesting and exam-relevant 3-in-1 problems from Engineering Graphics — combining concepts from:
1️⃣ Projection of Solids
2️⃣ Section of Solids
3️⃣ Development of Surfaces

The given solid is a Right Regular Triangular Pyramid (Base 30 mm side, Axis 60 mm).
We will:

Draw projections (front & top views) in two steps,

Introduce a vertical cutting plane parallel to VP,

Obtain the sectional front view, and

Finally, construct the development of the remaining solid surface.

🎯 Concepts Covered in this Video:
✅ Projection of Solids (Triangular Pyramid resting on HP)
✅ Section of Solids (Cutting Plane Parallel to VP)
✅ Development of Lateral Surfaces (True Length Method)
✅ True Length of Slant Edges
✅ Step-by-Step Construction of Sectional Front View
✅ Full Development of the Retained Portion

📘 Ideal For:

First-Year B.Tech / Diploma Students

Universities: SPPU, GTU, RTMNU, AKTU, JNTU and others

Students preparing for Engineering Graphics / Engineering Drawing exams

💡 Why Watch This Video?
Because this single question combines three chapters and tests your understanding of projection logic, section visualization, and development geometry — all in one go!
Perfect for university exams, vivas, and competitive tests.

🎓 Topics Tagged:
Projection of Solids, Section of Solids, Development of Surfaces, Triangular Pyramid, True Length Method, Engineering Graphics, Engineering Drawing, HP and VP, Cutting Plane Parallel to VP, Sectional Front View, Lateral Surface Development, Manas Patnaik Tutorials

💬 Got any doubts?
Comment below ⬇️ or reach me at [email protected]

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