This document provides an overview of common drafting tools and techniques used in engineering graphics. It describes various drawing instruments such as T-squares, triangles, compasses, and scales used to draw accurate technical drawings. It also covers topics such as drawing board setup, types of drawing pencils and their applications, techniques for drawing horizontal and vertical lines, and standards for title blocks and sheet layout. The document aims to introduce engineering students to fundamental drafting concepts and best practices for creating precise technical drawings.
Basics of engineering drawing by Rishabh NatholiaRISHABH NATHOLIA
This is my work to make sure it is easy to understand the basic of Mechanical Engineer Drawing.It is a made for all and a quick bite to the very basics of engineering drawing. This data will also help the students to score more in their subjects. This will also help on design sector interviews.
Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc.
Its purpose is to accurately and unambiguously capture all the geometric features of a product or a component. The end goal of an engineering drawing is to convey all the required information that will allow a manufacturer to produce that component.
Basics of engineering drawing by Rishabh NatholiaRISHABH NATHOLIA
This is my work to make sure it is easy to understand the basic of Mechanical Engineer Drawing.It is a made for all and a quick bite to the very basics of engineering drawing. This data will also help the students to score more in their subjects. This will also help on design sector interviews.
Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc.
Its purpose is to accurately and unambiguously capture all the geometric features of a product or a component. The end goal of an engineering drawing is to convey all the required information that will allow a manufacturer to produce that component.
This presentation was designed to attempt a lucidity and wholism on the topic CURVES IN ENGINEERING in the course ENGINEERING GRAPHICS for first year engineering students
INTRODUCTION OF ENGINEERING DRAWING
Application of Drawing in Industries - Importance of graphics in engineering applications - Use of drafting instruments - Specifications - Size, layout and folding of drawing sheets - Lettering and dimensioning.
PLANE CURVES AND FREE HAND SKETCHING
Curves used in engineering practices, Visualization concepts and Free Hand sketching - Layout of views.
QUADRANTS AND PROJECTION OF SOLIDS
Various types of Quadrants with their Projections and applications, Projection of simple solids like prisms, pyramids, cylinder, cone
This presentation was made to supplement learning in teaching drafting tools and materials. It is not the sole intention of the author to harm any organization, institution and individual. The author just wanted to inform.
Inverter is a device which convert a DC input supply voltage into symmetric AC voltage of desired magnitude and frequency at the output side. It is also know as DC-AC converter.
Ideal and practical inverter have sinusoidal and no-sinusoidal waveforms at output respectively.
If the input dc is a voltage source, the inverter is called a Voltage Source Inverter (VSI). One can similarly think of a Current Source Inverter (CSI), where the input to the circuit is a current source. The VSI circuit has direct control over ‘output (ac) voltage’ whereas the CSI directly controls ‘output (ac) current.
Inverter is a device which convert a DC input supply voltage into symmetric AC voltage of desired magnitude and frequency at the output side. It is also know as DC-AC converter.
Ideal and practical inverter have sinusoidal and no-sinusoidal waveforms at output respectively.
If the input dc is a voltage source, the inverter is called a Voltage Source Inverter (VSI). One can similarly think of a Current Source Inverter (CSI), where the input to the circuit is a current source. The VSI circuit has direct control over ‘output (ac) voltage’ whereas the CSI directly controls ‘output (ac) current.
The commutator and brush arrangement is used to convert bidirectional internal current to unidirectional external current or vice versa.
The current flows through the brush mounted on the commutator.
The brushes are located at magnetic neutral axis which is midway between two adjacent poles.
Types of commutation:
Resistance commutation
Retarded commutation
Accelerated commutation
Sinusoidal commutation
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
4. Drawing Boards
The left edge and right edge of a
drawing board has a true straight
edge.
For right-handed people, the left-
hand edge of the board is called the
working edge because the T-square
head slides against it.
For left-handed people, the right-
hand edge of the board is called the
working edge because the T-square
head slides against it.
T-Squares
The T-square is made of a long strip
called the blade, fastened at right
angles to a shorter piece called the
head.
5. The drawing paper should be placed
close to the working edge of the
board to reduce any error resulting
from the bending of the blade of the
T-square.
The paper should also be placed
close enough to the upper edge of
the board to permit space at the
bottom of the sheet for using the
T-square.
Drafting tape is used to fasten the
drawing paper to the drawing board.
6. Drawing Pencils
High-quality drawing pencils should be used in technical drawing, never ordinary writing pencils.
Many makes of mechanical pencils are available together with refill leads in all grades. Choose
a mechanical pencil that feels comfortable in your hand.
7. HARD MEDIUM SOFT
9H 8H 7H 6H 5H 4H 3H 2H H F HB B 2B 3B 4B 5B 6B 7B
Hard leads are used where extreme
accuracy is required. Generally
these leads are used for construction
lines.
Medium leads are used for general
purpose line work in technical
drawing.
Soft leads are used for various kinds
of art work. These leads are too soft
to be useful in mechanical drafting.
Drawing Leads
The first consideration in the selection of a grade of lead is the type of line work required. For
light construction lines and guide lines for lettering use a hard lead. For all other line work, the
lines should be BLACK. The lead chosen should be soft enough to produce jet black lines but
hard enough not to smudge.
8. TASK LEAD GRADE LINE WEIGHT
CONSTRUCTION LINES 3H, 4H, 6H THIN, LIGHT
VISIBLE OBJECT LINES H, F, HB THICK, DARK
HIDDEN LINES 2H, H THIN, DARK
CENTER LINES 2H, H THIN, DARK
DIMENSION LINES 2H, H THIN, DARK
EXTENSION LINES 2H, H THIN, DARK
LEADER LINES 2H, H THIN, DARK
CUTTING PLANE LINES H, F, HB THICK, DARK
PHANTOM LINES 2H, H THIN, DARK
LETTERING H, F, HB THIN, DARK
Drawing Lead Applications
9. Drawing Horizontal and Vertical Lines
To draw a horizontal line, press the head of the
T-square against the working edge of the board
with your left hand. Lean the pencil in the
direction of the line at an angle of approximately
60º and draw the line from left to right. While
drawing the line, rotate the pencil to distribute
the wear uniformly on the lead to maintain a
symmetrical point.
To draw a vertical line, press the head of the T-square
against the working edge of the board with your left hand
and place a triangle against the blade of the T-square.
Lean the pencil in the direction of the line at an angle of
approximately 60º and draw the line upward, rotating the
pencil to distribute the wear uniformly on the lead to
maintain a symmetrical point.
10. Triangles
Most inclined lines are drawn at standard
angles using the 45º x 45º triangle and
the 30º x 60º triangle.
In addition to drawing angles of 90º, 45º,
30º, and 60º, triangles can be combined
to draw angles of 15º increments.
11. Scales
Scales are instruments used in making
technical drawings full size or at a given
reduction or enlargement.
Types of scales include metric scales,
engineers’ scales, decimal scales,
mechanical engineers’ scales, and
architects’ scales.
Scales are usually made of plastic or
boxwood and are either triangular of flat in
shape.
12. Giant Bow Sets
Giant bow sets contain various
combinations of instruments.
Giant Bow Compass
The giant (large) bow compass has a center
wheel and can be adjusted simply by opening or
closing the legs of the compass while turning the
center wheel.
13. Using a Giant Bow Compass
1. Set off the required radius on one of the center
lines.
2. Place the needle point at the exact intersection of
the center lines.
3. Adjust the compass to the required radius
4. Lean the compass in the direction that you are
going to draw the circle. Draw the circle in a
clockwise direction while rotating the handle
between the thumb and forefinger.
14. Sharpening the compass lead
A properly sharpened compass point is formed by
rubbing the lead on the sandpaper pad.
A properly sharpened
compass point consists of a
single elliptical face.
A properly adjusted compass
The needlepoint extends about
halfway into the paper when the
lead touches the paper.
23. ESSENTIAL REQUIREMENTS FOR TITLE BLOCK
1. NAME OF THE FIRM
2. TITLE OF THE DRAWING
3. MATERIAL TO BE USED
4. SYMBOL – FIRST ANGLE OR THIRD ANGLE
5. NUMBER OF SHEETS PERTAINING TO DRAWING
6. DRAWN BY
7. CHECKED BY
8. APPROVED BY
9. DATE OF RELEASE
10. DRAWING NO.
11. SCALE
OTHER INFORMATIONS, IF REQUIRED
1. TYPE OF TREATMENT
2. FINISH/COATING
3. STOCK SIZE
4. NO. OFF
25. - Size (or text height)
- line thickness
- Shape
- Space between letters
- Space between words
Recommendation
LegibilityLegibility
UniformityUniformity
Text’s style on the drawing
must have the following
2 properties
Examples
GOOD
Not uniform in
style.
Not uniform in
height.
Not uniformly
vertical.
Not uniform in
thickness of
stroke.Inappropriate
space
between letters
26. Style (this course)
Gothic vertical style.
Begin the sentence, phrase or word with a capital letter.
Text height 2~3 mm.
Space between lines of text is about of text height.
Height of the lower-case letter is about 2/3 of that of a
capital letter.
29. Leave the space between words equal to the space
requires for writing a letter “O”.
Example
Sentence Composition
ALL DIMENSIONS ARE IN
MILLIMETERS
O O O
O UNLESS
OTHERWISE SPECIFIED.O
31. Basic Line Types &Application
Continuous
Dash
Chain
Style
Thickness Thick Thin 1. Dimension line
2. Extension line
3. Leader line
Center line
Hidden line
Visible line
represent features that can be seen in the
current view.
represent features that can not be seen in the current vi
represents symmetry, path of motion, centers of circles,
indicate the sizes and location of
features.
1. Visible
line
3. Hidden line
4. Center line
2. Dimension
line
Extension
line
Leader line