Drawing drawn by a person, having knolwedge about engineering aspect for the engineering purpose is an engineering drawing. It is the universal graphic language of engineers, spoken, read and written in its own way. Every language has its own rules of grammer.
Engineering drawing also has its grammer in the theory of projections, its idioms in conventional practice, its punctuations in the types of lines, its abbreviations, symbols and its descriptions in the constructions.The shape of objects are established by different lines and size description are by symbols lettering and dimensioning.
In Civil Engineering, this is concerned with structural works. It is very broad with many subspecialties, including structural, geotechnical, water resource and transportation engineering. Structural engineers are concerned with the safe design and construction of structures.
These can range from small warehouses to skyscrapers and from highway overpasses to large bridges and can include dams of all sizes. Geotechnical and soil mechanics engineers evaluate the capacity of rocks and soils to bear heavy structures.
Water resource engineers handle water collection, distribution, and purification, including the building of dams, flood control, and irrigation. Transportation engineers design highway and public transportation systems.
It is the foundation of all engineering drawing. It is the art of representation of geometrical objects on a drawing sheet, which is difficult to learn or teach without the good aids. Accuracy, neatness and legibility are of great importance in engineering drawing.
Plane geometrical Drawing
It is the art of representation of objects having two dimensions, i.e. length and breadth such as, square, rectangle, etc. on a drawing sheet.
Solid Geometrical Drawing
It is the art of representation of objects having three dimensions, i.e. length and breadth and height such as, cube, cylinder, etc. on a drawing sheet.
Can computer graphics replace the drafting board? If the necessary hardware and software are available, much time can be saved, by using the computer to construct geometrical figures, drawing etc. however, the computer cannot replace the drafting board and equipments as a
learning tool. The learning process is accomplished through traditional
construction methods, may then only easily accomplished by the use of computer. The skill of manual drafting is still in great demand and will
continue to be, however, because computer drafting is not suitable for all phases of design.
For example, for designing certain types of custom-made architecture and in remodeling one-of-a-kind developments manual draughtsman are still in demand for their abilities and extensive experience.