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ENGINEERING DRAWING NOTES PDF

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CONTENTS. 0. Foreword. Notes on the Use of the Document Section 11 General Principles of Dimensioning on Technical Drawings. Section 12 Indication of. Manual of British Standards in Engineering Drawing and Design. a few ideas in the designers head, through to rough sketches and notes, calculations. LECTURE NOTES. BASIC ENGINEERING DRAWING AND COMMUNICATION. Inquiries, Suggestions, Opinions etc should be forwarded to: Dr. Ballegu W R W.


Engineering Drawing Notes Pdf

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Engineering. Drawing The language is known as “drawing” or “drafting”. Both drawing types are used in technical drawing for communication. NOTES. LECTURE NOTES. For Environmental Health Science Students. Engineering Drawing. Wuttet Taffesse,. Laikemariam Kassa. Haramaya University. Here you can download engineering drawing book by n.d bhatt in pdf format. we' ve also provided Engineering Drawing Text Book and Notes of.

For example. In general all notes should be written in capital letters to aid legibility.

All lettering should be of the same size and preferably no smaller than 3mm. An example typeface is shown below. The layout of an engineering drawing It is important that you follow some simple rules when producing an engineering drawing which although may not be useful now, will be useful when working in industry. All engineering drawings should feature an information box. An example is shown below. NAME The name of the person who produced the drawing.

This is important for quality control so that problems with the drawing can be traced back to their origin. CHECKED In many engineering firms, drawings are checked by a second person before they are sent to manufacture, so that any potential problems can be identified early. Giving each drawing a version number helps people identify if they are using the most recent version of the drawing. DATE The date the drawing was created or amended on.

Large parts won't fit on paper so the scale provides a quick guide to the final size of the product. Projection systems will be covered later.

Hatching On sections and sectional views solid area should be hatched to indicate this fact. Hatching is drawn with a thin continuous line, equally spaced preferably about 4mm apart, though never less than 1mm and preferably at an angle of 45 degrees. Hatching a single object When you are hatching an object, but the objects has areas that are separated, all areas of the object should be hatched in the same direction and with the same spacing.

Hatching Adjacent objects When hatching assembled parts, the direction of the hatching should ideally be reversed on adjacent parts. If more than two parts are adjacent, then the hatching should be staggered to emphasise the fact that these parts are separate. Reverse hatching Staggered Hatching Hatching thin materials Sometimes, it is difficult to hatch very thin sections.

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To emphasise solid wall the walls can be filled in. This should only be used when the wall thickness size is less than 1mm. Hatching large areas When hatching large areas in order to aid readabilty, the hatching can be limited to the area near the edges of the part. Gambar Potongan Sections and sectional views are used to show hidden detail more clearly.

They are created by using a cutting plane to cut the object. A section is a view of no thickness and shows the outline of the object at the cutting plane. Visible outlines beyond the cutting plane are not drawn. A sectional view, displays the outline of the cutting plane and all visible outlines which can be seen beyond the cutting plane.

The diagram below shows a sectional view, and how a cutting plane works. Orthographic projection The aim of an engineering drawing is to convey all the necessary information of how to make the part to the manufacturing department. For most parts, the information cannot be conveyed in a single view. Rather than using several sheets of paper with different views of the part, several views can be combined on a single drawing using one of the two available projection systems, first angle, and third angle projection.

The terms working drawings and construction drawings are sometimes used interchangeably. Information presented in a set of working drawings, along with the specifications, should be complete so the craftsman who uses them will require no further information.

Engineering Graphics | BE110 | Study Materials

Working drawings show the size, quantity, location, and relationship of the building parts. Generally, working drawings may be divided into three main categories: Architectural Drawings Architectural drawings consist of all the drawings that describe the structural members of the building and their relationship to each other. This includes foundation plans, floor plans, framing plans, elevations, sections, details, schedules, and bills of materials.

Plans A plan is actually a part of the architectural drawing that represents a view of the project from above. Two types of plans will be discussed here: The project may be represented only by an outline. The grades at fixed points are shown throughout the area. This is done to show how the land slopes before construction is started and the finished grade after construction is completed.

The north arrow symbol, used for orientation of the drawing, is shown. The Construction Electrician may have to have a plot plan to construct a pole line to the project site at or near the earliest phase of construction.

Another example is when the slope and grade of the surrounding area is to be changed and you have to bury cable or conduit. You must know what the finished grade is and how deep to dig. This type of work requires close coordination between you, the Engineering Aids, Equipment Operators, and Builders. By looking over the plot plan, you will know what to do to prepare for the job. This building is shown in figure , view A, and you are equipped with a huge saw.

If you sawed the building in half horizontally and looked down on it from above, you would see the complete outline of the building view B. This particular view directly above would be called a floor plan view C.

Architects and engineers project their thoughts of a building, not yet built, onto a piece of paper and call it a floor plan. It does not matter that the heights of the outlets, appliances, or building parts are different. These heights will be indicated by figures in inches or feet, next to the symbols that represent them. Electrical construction drawings are floor plans modified by the inclusion of electrical symbols.

Figure shows an electrical layout superimposed on an outline taken from an architectural floor plan.

Bhatt Charotar Publishing. Panchal, Engineering Drawing, Charotar Publishing house, Drawing Describing any object information diagrammatically. Jan 19, Can anybody give me the solutions of engineering drawing by ms access vba open pdf file n. Apr 14, Ltd, Anand. The object is projected onto a display screen by drawing lines at the location of each.

The depth of the hole is usually indicated if it is isn't indicated on another view. The depth of the hole refers to the depth of the cylindrical portion of the hole and not the bit of the hole caused by the tip of the drip. Dimensioning Radial All radial dimensions are proceeded by the capital R.

All dimension arrows and lines should be drawn perpendicular to the radius so that the line passes through the centre of the arc. All dimensions should only have one arrowhead which should point to the line being dimensioned.

There are two methods for dimensioning radii. Tolerancing It is not possible in practice to manufacture products to the exact figures displayed on an engineering drawing. The accuracy depends largely on the manufacturing process used and the care taken to manufacture a product. A tolerance value shows the manufacturing department the maximum permissible variation from the dimension.

Each dimension on a drawing must include a tolerance value. This can appear either as: a general tolerance value applicable to several dimensions.

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All tolerances should be expressed to the appropriate number to the decimal points for the degree of accuracy intended from manufacturing, even if the value is limit is a zero. For example. In general all notes should be written in capital letters to aid legibility.

All lettering should be of the same size and preferably no smaller than 3mm. An example typeface is shown below. The layout of an engineering drawing It is important that you follow some simple rules when producing an engineering drawing which although may not be useful now, will be useful when working in industry. All engineering drawings should feature an information box. An example is shown below. NAME The name of the person who produced the drawing.

This is important for quality control so that problems with the drawing can be traced back to their origin. In many engineering firms, drawings are checked by a second person before they are sent to manufacture, so that any potential problems can be identified early.

Many drawings will get amended over the period of the parts life. Giving each drawing a version number helps people identify if they are using the most recent version of the drawing. DATE The date the drawing was created or amended on. Large parts won't fit on paper so the scale provides a quick guide to the final size of the product.

Projection systems will be covered later. Hatching On sections and sectional views solid area should be hatched to indicate this fact. Hatching is drawn with a thin continuous line, equally spaced preferably about 4mm apart, though never less than 1mm and preferably at an angle of 45 degrees. Hatching a single object When you are hatching an object, but the objects has areas that are separated, all areas of the object should be hatched in the same direction and with the same spacing.

Hatching Adjacent objects When hatching assembled parts, the direction of the hatching should ideally be reversed on adjacent parts. If more than two parts are adjacent, then the hatching should be staggered to emphasise the fact that these parts are separate.

Reverse hatching Staggered Hatching Hatching thin materials Sometimes, it is difficult to hatch very thin sections. To emphasise solid wall the walls can be filled in.

This should only be used when the wall thickness size is less than 1mm. Hatching large areas When hatching large areas in order to aid readabilty, the hatching can be limited to the area near the edges of the part.

[PDF] Geometric and Engineering Drawing By Ken Morling Book Free Download

Gambar Potongan Sections and sectional views are used to show hidden detail more clearly. They are created by using a cutting plane to cut the object. A section is a view of no thickness and shows the outline of the object at the cutting plane.

Visible outlines beyond the cutting plane are not drawn. A sectional view, displays the outline of the cutting plane and all visible outlines which can be seen beyond the cutting plane.Cascading of conventions by speciality[ edit ] The various fields share many common conventions of drawing, while also having some field-specific conventions.

When selecting software products required to operate with each other, it is necessary to check compatibility; your dealer should advise. Hatching On sections and sectional views solid area should be hatched to indicate this fact.

Chapter on Computer Aided Drafting CADr is entirely rewritten with inclusion of 50 self-interactive and self-learning practice modules. Architects and engineers project their thoughts of a building, not yet built, onto a piece of paper and call it a floor plan. Filling areas in various colours is a requirement in artwork.

Vectorization Tools with Smart Correct technology create lines, polylines, circles, arcs, text and rectangles.

All axonometric drawings use vertical lines for those lines representing height and sloping parallel edges for all other sides.

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