The document discusses several key aspects of interior design including beauty, expressiveness, functionalism, structural design, decorative design, lines, form, and texture. Specifically, it notes that interior design aims to achieve beauty, express an idea, and function effectively. It also outlines basic requirements for structural design such as being simple, proportionate, beautiful, and suited to its purpose and material. Decorative design should be used moderately and strengthen the structure. Lines like vertical, horizontal, diagonal, and curved are important architectural elements. Form must suit function, and texture can be tactile or visual.

3. The objective of interior design and decoration is to achieve beauty, expressiveness and
functionalism.
Beauty:-Is not the only objective in planning and furnishing accommodation areas; in addition
the areas should express an idea and most important of all, should function effectively.
Expressiveness:-To express some theme. Could be
naturalness,sophistication,formality,royalty,warmth,coolness,freshness,antiquity and so on.
Functionalism:-Its spaces and furniture should serve the purpose for which they are intended.
• There should be optimum utilization of space.
• It should be easily maintainable.
• It should be convenient to the guests.
• It should be practical in cost and within the budget constraints as far as possible.

5. Structural Design
Denotes the structure or construction of objects.
Basic Requirements: The basic requirements of a good
structural design are as follows:-
1. It should be simple.
2. It should be well proportioned.
3. In addition to being beautiful, it should be suited to its
purpose.
4. It should be suited to the material from which it is
made.

6. Decorative Design
This is the surface enrichment of structural design.
Any lines,colour,or materials that have been applied to
structural design for the purpose of adding a richer quality to it
constitutes its decorative design.
Basic Requirements:-
• Decorations should be used in moderation.
• Should be placed at structural points and it should
strengthen the shape of the object.
• There should be enough background space to give it an
effect of simplicity.
• The background should be suited to the patterns that are to
be placed against it.

8. Line
The architect and the interior designer must organize and combine lines
before they can create beauty in a building or in an interior design.
Vertical lines:-In hotels the vertical lines of doorways, pillars ,columns,
draperies and furniture give the necessary strength and height to rooms.
Horizontal Lines:-The horizontal lines of tables, sofas and other furniture
complement the severely vertical lines .
Diagonal Lines:-These lines appear in staircases,curtains,draperies and
wallpaper.
Curved Lines:-Forms a transition between the vertical and horizontal
lines such as the graceful curves of furniture.

9. Form
 Without the beauty of form good texture color or
decoration can be of no use.
 However a particular chair is not well designed
unless it accommodates itself to the human form.
 The form of an object should thus suit its function.

10. Texture
 Two basic categories of texture are tactile and visual
 Tactile or actual texture can be felt by hand
 Visual texture may be absolutely smooth to touch, but gives
the impression of texture.
 Plays an important part in interiors because it affects the
quality and quantity of light reflected by the surface.