Unit Cell

Unit cell               Unit cell can be considered as the building block of a crystal. It has the same symmetry as the entire crystal. When we arrange the unit cell in 3D, we get the bulk crystal. In other words, it can be described...

Projection of Truncated Solids

Projection of Truncated Solids   Development of a truncated  prism The method of obtaining the development of a truncated prism is shown in figure 1. Step 1: Draw the stretch-out line in the front view, along the base of the prism and equal in length to the...

Sections of Solids

Sections of Solids Sample Problem 1:A hexagonal prism, side of base 30 mm and axis 60 mm long, rests with its base on HP such that one of its rectangular faces is parallel to VP. A section plane perpendicular to HP and parallel to VP cuts the prism at a distance of 10...

Projections of Cylinder

Projections of Cylinder Sample Problem 1:Draw the projections of a cylinder, base 30 mm diameter and axis 40 mm long , resting with a point of its base circle on HP such that the axis is making an angle of 30º with HP and parallel to VP. Steps for Projections of...

Intersection of Surfaces

 Intersection of Surfaces Sample Problem 1: The front view of a cone resting on its base on HP is an equilateral triangle of 75 mm side with one side horizontal. It is penetrated by a square prism of side 25 mm. The rectangular faces of the prism are equally inclined...

Development of lateral Surfaces of Two Intersecting Solids

Development of lateral Surfaces of Two Intersecting Solids Sample Problem 1: A vertical square prism of side of base 45 mm and height 80 mm rests on HP with its faces equally inclined to VP. it is pierced centrally by a horizontal cylinder of 40 mm diameter and 80 mm...