Table of Contents
What are the main requirements of drawings?
Requirements of engineering drawings Engineering drawings should be unambiguous and clear. For any part of a component there must be only one interpretation. The drawing must be complete. The drawing must be suitable for duplication. Drawings must be language-independent. Drawings need to conform to standards.
What are the two elements of engineering drawing?
The two broad types of projections, both with several sub- classifications, are parallel projection and perspective projection. Projections. Orthographic projections: are drawn as multi view drawings, which show flat representations of principal views of the subject.
What are the contents of working drawing?
They consist of precisely written documentation that describes a project to be constructed, supplementing drawings and forming part of the contract and describing qualities of materials, their methods of manufacture and installation into the project, workmanship and mode of construction, in addition to providing other.
What are the four characteristics of detailed working drawing?
They may include dimensions, tolerances, notation, symbols and specification information, but this should not duplicate information included in separate specifications as this can become contradictory and may cause confusion.
What are drawing standards?
A set of working drawings is a set of drawings which contain all the information needed to manufacture a product. It includes information needed to fabricate each part, specify all standard components, and assemble the parts and standard components into the product.
What must an engineering detail drawing include?
The following information should be present on a detail drawing: engineer’s name. part name. material type. drawing scale. date and/or revision. necessary views (front, left side, right side, top, bottom, and/or back) isometric view. all necessary dimensions (width, depth, height, size, etc.).
What is drawing instrument?
Drawing instrument are materials we use for drawing. IDENTIFICATION OF DRAWING MATERIALS AND THEIR USES. Drawing Board – used for sketching and drawing objects.
What is engineering design and drawing?
Engineering drawings are used to communicate design ideas and technical information to engineers and other professionals throughout the design process. An engineering drawing represents a complex three-dimensional object on a two-dimensional piece of paper or computer screen by a process called projection.
What are the types of drawing?
Types of drawing Caricature drawing. Caricature drawings are images that depict their subjects in oversimplified or overdramatized manners. Cartoon drawing. Figure drawing. Gesture drawing. Line drawing. Perspective drawing. Photorealism. Pointillism.
What is complete working drawing?
In Fine Art, a working drawing is a separate, exploratory drawing that develops an idea towards a final work of art. This means that rather than diving feet-first into a complete drawing or painting, the artist will do a series of sketches with the aim of trying out or brainstorming ideas.
Why working drawing is important?
The primary role or function of working drawings is to convert design data into construction information and to clearly communicate that information to building industry, code officials, product manufacturers, suppliers and fabricators.
What is sanction drawing?
MUNICIPAL DRAWINGS/ SANCTION DRAWINGS • These are the drawings prepared for obtaining sanction for the project. • The sanctioning authorities have their own checklist of drawings to be submitted.
What are the three types of working drawings?
Below are the different types of construction drawings. 1 Architectural Drawings: This is one of the types of construction drawings. Structural Drawings: Electrical Drawings: Plumbing and Sanitary Drawings: Finishing Drawing:.
What scale is used for detail drawing?
Typically in civil engineering applications, 1:10 (1″=10′) is used exclusively for detail drawings. 1:20 and 1:40 scales are used for working plans.
What is scale in engineering drawing?
Definition. A scale is defined as the ratio of the linear dimensions of the object as represented in a drawing to the actual dimensions of the same.
What is orthographic drawing?
An orthographic drawing represents a three-dimensional object using several two-dimensional views of the object. It is also known as an orthographic projection. For example, you can see in this image the front, top and side views of an aircraft.
What is Line in engineering drawing?
Lines in technical drawings are part of a specialized graphic language that is standardized throughout industry. Each type of line has a very precise symbolic meaning. Correct usage of this “alphabet of lines” is essential whether you use traditional drafting methods or CAD. Line weight is the thickness of the line.
What is drawing in basic science?
Drawing is a way of making marks to represent an object. In basic Science and Technology, when we want to draw, we can make a representation on pieces of paper by making use of different types of drawing materials.
Why a drawing table is inclined?
The tilt is necessary to allow for closer inspection of detailed areas that would otherwise be far away from our eyes and hands if located on a flat surface. Tilting the work surface is also necessary to accommodate our eye’s visual perception of perspective and foreshortening.
What is drawing instruments and materials?
Drawing instruments and materials for technical drawing are: Drawing board. Tee square. Sets squares. Protractor. Compasses. Dividers. Drawing paper clips. Scale rules.
What is drawing design?
n.An illustration of an object, chiefly through lines, that is intended to give sufficient information to allow the thing illustrated to be completed.
What is process drawing?
Drawing is a metalworking process that uses tensile forces to stretch (elongate) metal, glass, or plastic. As the metal is drawn (pulled), it stretches to become thinner, to achieve a desired shape and thickness.
Why engineering drawing is needed?
Typically, the purpose of an engineering drawing is to clearly and accurately capture all geometric features of a product or component so that a manufacturer or engineer can produce the required item. Drawings can be created in Oblique and Isometric as well as 1st and 3rd projection.
