Problem 5 Based on Square Planes - Projection of Planes - Engineering Drawing

TL;DR

A square plane is resting on a corner, appearing as a rhombus in the top view, with the diagonal of 25mm. The surface inclination with the horizontal plane is determined as 66 degrees.

Transcript

hello friends here in this video we are going to see a problem on projection of planes for that here is the question it is given that a square lamina lamina is the other word for the plane abcd of 50 mm side the rest on the corner a in hp such that the plane is seen as a rhombus in the top view but diagonal contained by corner a measuring 25 mm dra... Read More

Key Insights

• 🫵 A square plane resting on a corner appears differently in the top view compared to the front view.
• 🫤 The length of the diagonal can be determined by measuring half the length of the diagonal in the front view.
• 🫥 Tilting the plane changes the shape and inclination visible in the top view.
• ✈️ The surface inclination can be determined by measuring the angle between the inclined plane and the horizontal plane.

Questions & Answers

Q: How is the square plane represented in the top view?

In the top view, the square plane appears as a square, as it is resting on one of its corners in the horizontal plane (HP).

Q: How is the diagonal of the square plane determined?

The diagonal AC of the square plane, measuring 25mm, is drawn by measuring 12.5mm on each side of the center point between BD.

Q: How is the inclined plane represented in the top view?

The inclined plane is represented by tilting the square plane from point A, with point C projected upwards, and drawing a diagonal (A'D') that intersects the line passing through point C.

Q: What is the surface inclination of the plane with the horizontal plane (HP)?

The surface inclination is determined to be 66 degrees between the inclined plane and the horizontal plane.

Summary & Key Takeaways

• A square plane, resting on a corner, is given with a 50mm side. It appears as a rhombus in the top view, with its diagonal measuring 25mm.

• The projections of the square plane are drawn, both in the top view and front view.

• The surface inclination of the plane with the horizontal plane is determined to be 66 degrees.