What does UNO mean in engineering drawings?

Above Finished Grade Construction

What does REF mean in engineering drawings?

reference dimensions

How do you read technical drawings?

Start by looking at the Title Block on each drawing.
Drawings generally include the front, side and top of the object being designed.
Parallel projections include orthographic drawings: flat, multi-view drawings of the subject.
The drawing of the front of the object shows dimensions of width and height.

What are the four types of technical drawing?

There are many types of technical drawings, including: 3D drawings (isometric, perspective) • Exploded-view 3D drawings • Complete working drawings • Detail drawings (2D orthogonal projections) •Diagrams are another form of technical drawing with looser, less universal standards.

What are the three types of engineering drawings?

engineering drawings that are the most complete drawings produced. Show the exact and size of an object. Detail drawings provide enough information to produce the product. Detail drawings include dimensions for all parts of the product to show the overall size and shape, along with detailed features of the product.

What is the role of technical drawing?

Technical drawing is essential for communicating ideas in industry and engineering. To make the drawings easier to understand, people use familiar symbols, perspectives, units of measurement, notation systems, visual styles, and page layout. Technical drawings are understood to have one intended meaning.

Why are symbols important in technical drawing?

Engineering drawing abbreviations and symbols are used to communicate and detail the characteristics of an engineering drawing. Many corporations have such standards, which define some terms and symbols specific to them; on the national and international level, ASME standard Y14. 38 is one of the widely used standards.

Why speed is important in technical drawing?

Artists that have drawn for many years often amaze people by how quickly they can get an image on the drawing surface. Frankly, anyone can draw quickly, but drawing speed without accuracy really misses the whole point. So, we need to draw quickly, but also draw with accuracy.

When we should use technical drawing?

Technical drawing is a drawing or plan, rendered to scale, that is used to communicate direction and specifics to a group of people who are creating something to explain how something works or how to build something.

What makes a good technical drawing?

‘What makes a great Technical Drawing? ‘ Technically correct, accurate, complete, consistent and unambiguous. Check the brief (a lot – and at all stages of the drawing process).

What should be in a technical drawing?

Technical drawings may comprise two-dimensional (orthogonal) plans, sections and elevations, or may include three-dimensional or exploded projections….They may include:

Sketches.
Design intent drawings.
Detail drawings.
Working drawings.
General arrangement drawings.
Assembly drawings.
Component drawings.
Shop drawings.