1.1 THE DESIGN PROCESS:
The entire process of structural planning and design requires not only imagination and conceptual thinking but also sound knowledge of practical aspects, such as recent design codes and bye-laws, backed up by ample experience, institution and judgment.
It is emphasized that any structure to be constructed must satisfy the need efficiency for which it is intended and shall be durable for its desired life span.
Thus, the design of any structure is categorizes into following two main types:-
1. Functional design
2. Structural design
1.1.1 FUNCTIONAL DESIGN:
The structure to be constructed should primarily serve the basic purpose for which it is to be used and must have a pleasing look.
The building should provide happy environment inside as well as outside.
Therefore, the functional planning of a building must take into account the proper arrangements of room/halls to satisfy the need of the client, good ventilation, lighting, acoustics, unobstructed view in the case of community halls, cinema theatres, etc.
1.1.2 STRUCTURAL DESIGN:
Once the form of the structure is selected, the structural design process starts.
Structural design is an art and science of understanding the behavior of structural members subjected to loads and designing them with economy and elegance to give a safe, serviceable and durable structure.
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1.2 STAGES IN STRUCTURAL DESIGN:
The process of structural design involves the following stages.
1) Structural planning.
2) Action of forces and computation of loads.
3) Methods of analysis.
4) Member design.
5) Detailing, Drawing and Preparation of schedules.
1.2.1 STRUCTURAL PLANNING:
After getting an architectural plan of the buildings, the structural planning of the building frame is done. This involves determination of the following.
a. Position and orientation of columns.
b. Positioning of beams.
c. Spanning of slabs.
d. Layouts of stairs.
e. Selecting proper type of