What is a section of a solid?
Imagine a solid to have been cut by a straight plane, called a cutting plane (CP). The new surface created by cutting the object is called a section.
What is section of solid in engineering drawing?
SECTIONING A SOLID. An object ( here a solid ) is cut by some imaginary cutting plane to understand internal details of that object. The action of cutting is called SECTIONING a solid & The plane of cutting is called SECTION PLANE.
What are the types of solids in engineering drawing?
In orthographic projection, minimums of two views are necessary to represent a solid. Front view is used to represent length and height and the top view is used to represent length and breadth….Polyhedra
- Regular Polyhedra.
- Prisms.
- Pyramids.
What is true section?
Sections : The projection of the section on the reference plane to which the section plane is perpendicular will be straight line coinciding with the trace of the section plane on it. True shape of the section : Projection of the section on a plane parallel to the section plane will show the true shape of the section.
What are the characteristics of section lines used in engineering drawing?
A section lined area is always completely bounded by a visible outline. The section lines in all areas should be parallel. Section lines shown in opposite directions indicate a different part. All the visible edges behind the cutting plane should be shown.
How will you classify sections of solids?
Solid figures are classified into prisms, pyramids, cylinders, spheres and so on. A prism is a solid that has two congruent bases which are parallel faces.
What is the section plane?
1 : a surface seen in section (as in cross section) 2 : a hypothetical plane cutting a section.
What are solids how they are classified?
Solids can be classified into two types: crystalline and amorphous. Crystalline solids are the most common type of solid. They are characterized by a regular crystalline organization of atoms that confer a long-range order. Amorphous, or non-crystalline, solids lack this long-range order.
What is Prism in engineering drawing?
Prism – a polyhedron formed by two equal parallel regular polygon, end faces connected by side faces which are either rectangles or parallelograms. Inclined/slant/longer edges – the edges which connect Inclined/slant/longer edges – the edges which connect the apex and the base corners.
Which is the cut out portion of a solid?
The cut out portion of the solid It is denoted by thin lines (construction lines) and alpha numeric digits are cut across. Section plane A section plane is denoted by equidistant hatch, separated @ 2/3mm at 450if not coinciding with any other line. Anup Ghosh Engineering Drawing Projection of Solid Section
How are section lines used in engineering drawing?
Each cutting plane will create a section view, and each section view is drawn as if the other cutting plane did not exist. Section Line Practices Section lines or cross-hatch lines are added to a section view to indicate the surfaces that are cut by the imaginary cutting plane.
What is problem 14.5 of solids engineering?
Problem 14.5: A square prism base 40 mm side, axis 80 mm long, has its base on the H.P. and its faces equally inclined to the V.P.
When does a section plane intersect an edge of a solid?
The point at which the section plane intersects an edge of the solid is called the point of intersection (POI). A section view is created by passing an imaginary cutting plane vertically through the center of the part. This figure is a 3D representation of the part after it is sectioned.