DOCSLIB.ORG

A Guide for Planning Drafting and Design Technology Programs

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
A Guide for Planning Drafting and Design Technology Programs DOCUMENT RESUME ED 057 245 VT 014 407 AUTHOR Guerard, Michael P.; And Others TITLE A Guide for Plannipg Drafting and Design Technology Programs. Section I, IT. SPONS AGENCY Texas Education Agency, Austin. PUB DATE Nov 70 NOTE 270p.; Consolidation of three Ph.D. Dissertations, Texas A and M University EDRS PRICE MF-$0.65 HC-$9.87 DESCRIPTORS *Community Colleges; Course Content; Curriculum Design; *Curriculum Guides; Curriculum Planning; Design; *Drafting; Educational Equipment; Educational Facilities; *Industrial Technology; Occupational Information; *Program Development; Questionnaires; State Surveys ABSTRACT This guide is the result of a consolidation ofthree separate, closely related dissertation studies designedto provide information for preparing a planning guide for draftingand design technology programs. One of the studieswas of the Texas Juniot College drafting and design curricula, anotherwas of the buildings and equipment, and the third usedan industrial survey to determine criteria for a program guide. The assumptionsfor formulating the suggested curriculum were- that:(1) the course of study should be for students wishing to pursue a particular vocation,(2) the occupational needs of studentsare generated by employers, (3) the classification of occupations impliescommon knowledge and skill, (4) some occupations require unique knowledges and skills, (5) duplication of subject matter should be minimized,and (6) adequate equipment and facilities arenecessary. The surveys of junior Ileges were confined to those colleges withassociate degree -ams, and the industrial concerns were stratified accordingto P Is of specialization, volume of employment, and regional locat me planning guide section of this document includes;(1) enrollmeil, estimation,(2) suggested course of study,course outlines, and descriptions,(3) personal requirements, and (4) facilities and equipment. The data collection and analysisand the appendixes are available as VT 014 406 and VT 014 408 respectively. (GEB) A ,'S 14:' ; '41.4,,. WA ,...,:. .. : ,iP.44..li.ep:6j1,..V.:.../.. a GNI ..... 4.. -..W..;..,,:;.' '%,1. MEI ,..."...`w'S' 0.4,Y" ir *.es, ..". 4-:*/ INAW:tl't .' ,`4 -.:.;-.4.*.."--'*:,;..' i, '' -".-..0,. ',.%;'.1.,;4r.1,-. -.,-,41,- --Kt.:I ,...,.' ..-. .w., /..\...., , '....',',,r,-,.... o.-.1t-letii.,,-..:, .. -: :, .. ...,;;;;:.-4.-:,... Z....--t: " INVA ,Ilk %. -z ''..! ,, ...,,-,-,..... 4.:, - ,,.A-.'2. :. 1, .::;..",......4.- .,.; -' -1,b;. ". :4..% 4;v A..1.!:Ito .-10, = /,' 'I:. ',..:': :- t' . ,....,A, ..1.,.P;t41:2::*..1,1,1....,''' iI'Aj *,"%1.1: -_.....! 4......; ti;,#.,4:0!,,, l.::::u i...7, ge..,: -,....c....--:,.. -- ,..:,.... -,F%::.4°.::.4+ r. 1,..,!7.,, 07:,74,.; ;,4 «,- h. vo.:;, ii: i'-'0:4'.:.1:1.'::: le..?; .."'".! v'"%i'i f'' i',....4iv..."*.: .'4;'....7.-lri:1,4-`°..,.;c:v".": A \ .. '.....:-.1.?i. +Y.' :' I 4' 4 :'*`-....' ,:.",-; 7...;, --.': ,'...''- ''':I.:: h: f 444; r ,,,_YA .'.."--::,:''!...'-..:;;-:,'"'vi':-,'=..%).:,,-;;;-,. ,, ,I-,s-;.,,,.-,.....,.... .. -_;' ,---:;,-. -,-,, ' 1 1 1 I I 1 1 14I IWO U.S. DEPARTMENT OF HEALTH, EDUCATION & WELFARE OFFICE OF EDUCATION THIS DOCUMENT HAS BEEN REPRO- DUCED EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION ORIG, 1NATING IT. POINTS OF VIEW OR OPIN- IONS STATED DO NOT NECESSARILY REPRESENT OFFICIAL OFFICE OF EDU- CATION POSITION OH POLICY A GUIDE FOR PLANNING DRAFTING AND DESIGN TECHNOLOGY PROGRAMS by Michael P. Guerard Harry W. Walston Gary H. Winegar Prepared for The Occupational Research CoordinaungUnit Texas Education Agency Austin, Texas78711 November, 1970 CCMPLIANCE WITH TITLE VI CIVIL RIGHTS ACT OF 1964 Reviews of the local educational agency pertaining to compliance with Title VI, Civil Rights Act of 1964, will be conducted periodically by staff representatives of the Texas Education Agency. These reviews will cover at least the following policies and practices: 1. Enrollment and assignment of students without discrimi- nation on the ground of race, color, or national origin. 2. Assignment of teachers and otht. staff without discrimi- nation on the ground of race,.!olor, or national origin. 3. Non-discriminatory mse of facilities. 4. Public notice given by the local educational agency to participants and other citizens of the non-discriminatory policies and practices in effect by the local agency. In addition to conducting reviews, Texas Education Agency staff repre- sentatives will check complailits of non-ccmpliance made by r ;- and will report their findings to the United States Commissiuner ot Education. Preface This document represents the consolidationof three separate, but closely related studies, each ofwhich led to a doctor's dissertation. These studies and theirauthors were: A Study of Texas Junior College Drafting _gag Des i9n Technology Curricula for Develo Guide, Michael P. Guerard, Texas A&M University. An Industrial Survey to Determine Criteria for a Program Guide for Drafting and Design Technology in Texas Junior Colleges. Harry W. Walston, Texas A M University. A Study of Buildings and Eauipment in Texas Linior Ccilese Drafting TechnologyPrograms With Gary H. aVine,..ir, Texas A&M University The above studies were made undercontract with the Texas Education Agency office of Post-SecondaryVocational Program Development, and this -lanning guide is theresult of the collabora- tion of the three authors. Many indivipalshave contributed Lit valuable information and guidance without which this document would not have been possible. Special thanks are extended to all the drafting teachers, professional draftsmen and supervisors who provided the data and recommendations upon which this planning guide is based. Appreciation is also expressed to state education agencies, many of whom provided samples of curriculum and planning guides for examination.The compilation and writing of this Tilde have been immeasurably aided by the guidance and suggestions of the Project Director, Dr. James H. Earle, Head, Department of Engineering Design Graphics, Texas A&M University. Valuable research assistance was provided by Mrs. Janet Davis, and the most difficult and exacting task of typ'ng the rinal manuscript was perf_imed admirably by Mrs. Ruth Hanson. It is the authors' sincere wish that this guide willserve the needs of educators and curriculum planners in present and future programs in Drafting and Design Technology in Texas junior colleges. Michael P. Gue:ard Harry W. Walston Gary H. Winegar College Station, Texas November, 1970 5 iv TABLE OF CONTENTS Section Page I. Developmental Procedure 1 Philosophy of Development Junior College Survey 2 Industrial Survey 4. Combining the Results ofCurriculum 0 6 Facilities, and Industrial Surveys I I. Planning Guide 9 Introduction 10 Enrollment Estimation 14 Determination of Curriculum 18 Drafting Course Descriptions .... .. 23 Suggested Minimum CurriculumOutline 0 0 0 40 Suggested Courses of Study 42 Drafting Course Outlines 68 Personnel Requirements.. ... 185 Facilities and Equipment 189 Drafting Rooms 193 Instructors' Offices .. - 0 . 219 Utility-Teacher Preparation racilities.. 223 Visual-Aid Equipment 0 i J 0 235 Teaching Aids ..... ......... 0... 0 239 Equipment Price List 245 III. Data Collection and Analysis.. , 0 248 The Curriculum Survey 0 .0 0 .. 249 The Facilities Survey . 0 .. 296 The Industrial Survey 0 . 405 Bibliography 0 ..... 0 ..... 0 484 Appendixes ...... 0 485 TABLE OF CONTENTS--Continued Page Appendixes--Continued Appendix A. --The Curriculum Study , 486 Sample Letters . OOOOOOO . 0 .. 487 Questionnaire Form 493 Statistical Derivations.00c, . ,, 523 Comparative Topic Ratings 533 Appendix B.--The Facilities Survey ., . 545 Sample Latters.00 OOOO . 546 Director's Copy of Inventory Form 553 Appendix C--The Industrial Survey 593 Sample Letters and Enclosures 594 Survey Questionnaire OO ...... 605 Subject Rating Summaries... J 0 644 Appendix D.--Planning Forms .. 666 , Vi LIST OF TABLES Table Page 1 Width of Aisles 0 0 . .0 .. ... 196 2 Number of Work Stationsfor Beginning and Advanced Drafting Rooms. ...... CO 196 3 Square Footageper Student 0 0 198 4 . .. Recommendations fora Beginninu and Advanced Drafting Laboratory 198 5 Recommended Equipment forEach Drafting Room .. 208 6 Office Dimensions 221 7 Linear Feet of Shelving 225 8 Number of F.zat File CabinetUnits (49 5/16" X 38 1/2" X 15 3/8") 226 9 Number of File Cabinets ....... 0 0 e 226 10 Number of Large Metal or Wooden Cabinets ,, . 227 11 Recommended Size of Teacher Preparation Room. 0 . 227 12 Visual-Aid Equipment . .. OOOOOOO 0 .. 237 13 Junior Colleges in TexasOffering Drafting and Design Technology 253 14 Enrollment and Staffing 0 0 OOOOO 262 15 junior Colleges in TexasOffering Drafting and Design Technology OOOOOOO . 300 16 Inventory Forms Returned fromDirectors and Instructors 303 8 vii LIST OF TABLES---Continued Table Page 17 The Present Size of Drafting Rooms, Average Number of Drafting Tables per Room, and the Average Number of Square Feet per Drafting Table 0 OOOOOOO o 326 18 The Recommended Size for a Drafting Room, the Recommended Number of Drafting Tables per Room, and the Recommended Number of Square Feet per Student Work Station 327 19 The Present and Recommended Size of Drafting Table Tops 340 20 The Size of Drafting Table Tops for Colleges Having One Room for Beginning Drafting Courses and One Room for Advanced Courses 342 21 The Present and Recommended Linear Feet of Bookcase Shelving for Offices, Drafting Rooms, and Drafting Departments . 344 22 Number of Flat Files in Offices, Drafting Rooms, and Departments OOO 347 23 Number
Load more

Recommended publications
  • The Origin and Evolution of Calipers
    History of Precision Measuring Instruments The Origin and Evolution of Calipers MAP1481_E12029_2_MeasuringHistory_Calipers.indd 1 18/5/21 1:34 PM Contents 1. About the Nogisu ...............................................................................................................................1 2. About the Caliper ...............................................................................................................................2 3. Origin of the Name Nogisu and Vernier Graduations ..........................................................................4 4. Oldest Sliding Caliper: Nogisu .............................................................................................................8 5. Scabbard Type Sliding Caliper till the Middle of 19th Century .............................................................9 6. World's Oldest Vernier Caliper (Nogisu) in Existence .........................................................................11 7. Theory That the Vernier Caliper (Nogisu) Was Born in the U.S. ..........................................................12 8. Calipers before Around 1945 (the End of WWII) in the West ...........................................................13 8. 1. Slide-Catching Scale without Vernier Graduations: Simplified Calipers ......................................14 8. 2. Sliding Calipers with Diagonal Scale ..........................................................................................18 8. 3. Sliding Caliper with a Vernier Scale: Vernier Caliper ..................................................................19
    [Show full text]
  • Surveying and Drawing Instruments
    SURVEYING AND DRAWING INSTRUMENTS MAY \?\ 10 1917 , -;>. 1, :rks, \ C. F. CASELLA & Co., Ltd II to 15, Rochester Row, London, S.W. Telegrams: "ESCUTCHEON. LONDON." Telephone : Westminster 5599. 1911. List No. 330. RECENT AWARDS Franco-British Exhibition, London, 1908 GRAND PRIZE AND DIPLOMA OF HONOUR. Japan-British Exhibition, London, 1910 DIPLOMA. Engineering Exhibition, Allahabad, 1910 GOLD MEDAL. SURVEYING AND DRAWING INSTRUMENTS - . V &*>%$> ^ .f C. F. CASELLA & Co., Ltd MAKERS OF SURVEYING, METEOROLOGICAL & OTHER SCIENTIFIC INSTRUMENTS TO The Admiralty, Ordnance, Office of Works and other Home Departments, and to the Indian, Canadian and all Foreign Governments. II to 15, Rochester Row, Victoria Street, London, S.W. 1911 Established 1810. LIST No. 330. This List cancels previous issues and is subject to alteration with out notice. The prices are for delivery in London, packing extra. New customers are requested to send remittance with order or to furnish the usual references. C. F. CAS ELL A & CO., LTD. Y-THEODOLITES (1) 3-inch Y-Theodolite, divided on silver, with verniers to i minute with rack achromatic reading ; adjustment, telescope, erect and inverting eye-pieces, tangent screw and clamp adjustments, compass, cross levels, three screws and locking plate or parallel plates, etc., etc., in mahogany case, with tripod stand, complete 19 10 Weight of instrument, case and stand, about 14 Ibs. (6-4 kilos). (2) 4-inch Do., with all improvements, as above, to i minute... 22 (3) 5-inch Do., ... 24 (4) 6-inch Do., 20 seconds 27 (6 inch, to 10 seconds, 403. extra.) Larger sizes and special patterns made to order.
    [Show full text]
  • MICHIGAN STATE COLLEGE Paul W
    A STUDY OF RECENT DEVELOPMENTS AND INVENTIONS IN ENGINEERING INSTRUMENTS Thai: for III. Dean. of I. S. MICHIGAN STATE COLLEGE Paul W. Hoynigor I948 This]: _ C./ SUPP! '3' Nagy NIH: LJWIHL WA KOF BOOK A STUDY OF RECENT DEVELOPMENTS AND INVENTIONS IN ENGINEERING’INSIRUMENTS A Thesis Submitted to The Faculty of MICHIGAN‘STATE COLLEGE OF AGRICULTURE AND.APPLIED SCIENCE by Paul W. Heyniger Candidate for the Degree of Batchelor of Science June 1948 \. HE-UI: PREFACE This Thesis is submitted to the faculty of Michigan State College as one of the requirements for a B. S. De- gree in Civil Engineering.' At this time,I Iish to express my appreciation to c. M. Cade, Professor of Civil Engineering at Michigan State Collegeafor his assistance throughout the course and to the manufacturers,vhose products are represented, for their help by freely giving of the data used in this paper. In preparing the laterial used in this thesis, it was the authors at: to point out new develop-ants on existing instruments and recent inventions or engineer- ing equipment used principally by the Civil Engineer. 20 6052 TAEEE OF CONTENTS Chapter One Page Introduction B. Drafting Equipment ----------------------- 13 Chapter Two Telescopic Inprovenents A. Glass Reticles .......................... -32 B. Coated Lenses .......................... --J.B Chapter three The Tilting Level- ............................ -33 Chapter rear The First One-Second.Anerican Optical 28 “00d011 ‘6- -------------------------- e- --------- Chapter rive Chapter Six The Latest Type Altineter ----- - ................ 5.5 TABLE OF CONTENTS , Chapter Seven Page The Most Recent Drafting Machine ........... -39.--- Chapter Eight Chapter Nine SmOnnB By Radar ....... - ------------------ In”.-- Chapter Ten Conclusion ------------ - ----- -.
    [Show full text]
  • Maps and Diagrams. Their Compilation and Construction
    ~r HJ.Mo Mouse andHR Wilkinson MAPS AND DIAGRAMS 8 his third edition does not form a ramatic departure from the treatment of artographic methods which has made it a standard text for 1 years, but it has developed those aspects of the subject (computer-graphics, quantification gen- erally) which are likely to progress in the uture. While earlier editions were primarily concerned with university cartography ‘ourses and with the production of the- matic maps to illustrate theses, articles and books, this new edition takes into account the increasing number of professional cartographer-geographers employed in Government departments, planning de- partments and in the offices of architects pnd civil engineers. The authors seek to ive students some idea of the novel and xciting developments in tools, materials, echniques and methods. The growth, mounting to an explosion, in data of all inds emphasises the increasing need for discerning use of statistical techniques, nevitably, the dependence on the com- uter for ordering and sifting data must row, as must the degree of sophistication n the techniques employed. New maps nd diagrams have been supplied where ecessary. HIRD EDITION PRICE NET £3-50 :70s IN U K 0 N LY MAPS AND DIAGRAMS THEIR COMPILATION AND CONSTRUCTION MAPS AND DIAGRAMS THEIR COMPILATION AND CONSTRUCTION F. J. MONKHOUSE Formerly Professor of Geography in the University of Southampton and H. R. WILKINSON Professor of Geography in the University of Hull METHUEN & CO LTD II NEW FETTER LANE LONDON EC4 ; © ig6g and igyi F.J. Monkhouse and H. R. Wilkinson First published goth October igj2 Reprinted 4 times Second edition, revised and enlarged, ig6g Reprinted 3 times Third edition, revised and enlarged, igyi SBN 416 07440 5 Second edition first published as a University Paperback, ig6g Reprinted 5 times Third edition, igyi SBN 416 07450 2 Printed in Great Britain by Richard Clay ( The Chaucer Press), Ltd Bungay, Suffolk This title is available in both hard and paperback editions.
    [Show full text]
  • Drafting Machines and Parts Threof from Japan
    DRAFTING MACHINES AND PARTS THEREOF FROM JAPAN Determination of the Commission in Investigation No. 731-T A-432 (Final} Under the Tariff Act of 1930, Together With the Information Obtained in the Investigation USITC PUBLICATION 2247 DECEMBER 1989 United States International Trade Commission Washington, DC 20436 UNITED STATES INTERNATIONAL TRADE COMMISSION COMMISSIONERS Anne E. Brunsdale, Chairman Ronald A. Cass, Vice Chairman Alfred E. Eckes Seeley G. Lodwick David B. Rohr Don E. Newquist Staff assigned: Elizabeth Haines, Investigator Catherine DeFilippo, Economist Marshall Wade, Financial Analyst Ruben Moller, Industry Analyst William Kane, Attorney George Deyman, Supervisory Investigator Address all communications to Kenneth R. Mason, Secretary to the Commission United States International Trade Commission Washington, DC 20436 CONTENTS Determination and Views of the Commission: Determination ..........•........... ~. .... 1 Views of the Conunission •••••••••••••.•••• ............. 3 Views of Chairman Anne E. Brunsdale •••••• . • . .. .. ... .. ... 21 Additional Views of Vice Chairman Ronald A. Cass •••• ....... • _35 Additional Views of Conunissioner Eckes ••••• .. • ......... ............ 67 Information obtained in the investigation: Introduction •••••• .................. ·• ........ A-1 Background ••••••••• ..... •· .. A-2 Nature and extent of sales at LTFV •••• .............. ............ A"."'2 The product: Description and uses .••••••••••• . .. ............. A-3 Track drafting machine •••••••. .. .. ..... ...... A-3 Band-and-pulley
    [Show full text]
  • Surveying Is the Art of Determining the Relative Position
    CE6304-SURVEYING-I UNIT-I INTRODUCTION AND CHAIN SURVEYING DEFINITION: Surveying is the art of determining the relative positions of points on, above or beneath the surface of the earth by means of direct or indirect measurements of distance, direction & elevation. Plane Survey: Surveying which the mean surface of earth regarded as plain surface and not curve it really is known as plain surveying. A following Assumption are made: (i) A level line is considered a strait line thus the plump line at a point is parallel plump line at any after point. (ii) The angles between two such lines that intersect is a plain angle and not a sphere angle. (iii) The meridian through any two points parallel. (iv) When we deal with only a small portion earths surface the above assumptions can justify. (v) The error induced for a length of an 18.5 kms it‘s only 0.0152 ms grater than sub dented chord 1.52 cm. Geodetic survey : Survey is which the shape (curvature) of the earth surface is taken in the account a higher degree of precision is exercised in linear and angular measurement is tanned as Geodetic Survey. A line connecting two points is regarded as an arc. Such surveys extend over large areas PRINCIPLES OF SURVEYING Location of a point by measurement from 2 points of reference Working from whole to part. Location of a point by measurement from 2 points of reference There should be 2 points of reference say P & Q P,Q are the ground reference points and permanent points.
    [Show full text]
  • Instruments and Methods of Physical Measurement
    INSTRUMENTS AND METHODS OF PHYSICAL MEASUREMENT By J. W. MOORE, . i» Professor of Mechanics and Experimental Philosophy, LAFAYETTE COLLEGE. Easton, Pa.: The Eschenbach Printing House. 1892. Copyright by J. W. Moore, 1892 PREFACE. 'y'HE following pages have been arranged for use in the physical laboratory. The aim has been to be as concise as is con- sistent with clearness. sources of information have been used, and in many cases, perhaps, the ipsissima verba of well- known authors. j. w. M. Lafayette College, August 23,' 18g2. TABLE OF CONTENTS. Measurement of A. Length— I. The Diagonal Scale 7 11. The Vernier, Straight 8 * 111. Mayer’s Vernier Microscope . 9 IV. The Vernier Calipers 9 V. The Beam Compass 10 VI. The Kathetometer 10 VII. The Reading Telescope 12 VIII. Stage Micrometer with Camera Lucida 12 IX. Jackson’s Eye-piece Micrometer 13 X. Quincke’s Kathetometer Microscope 13 XI. The Screw . 14 a. The Micrometer Calipers 14 b. The Spherometer 15 c. The Micrometer Microscope or Reading Microscope . 16 d. The Dividing Engine 17 To Divide a Line into Equal Parts by 1. The Beam Compass . 17 2. The Dividing Engine 17 To Divide a Line “Originally” into Equal Parts by 1. Spring Dividers or Beam Compass 18 2. Spring Dividers and Straight Edge 18 3. Another Method 18 B. Angees— 1. Arc Verniers 19 2. The Spirit Level 20 3. The Reading Microscope with Micrometer Attachment .... 22 4. The Filar Micrometer 5. The Optical Method— 1. The Optical Lever 23 2. Poggendorff’s Method 25 3. The Objective or English Method 28 6.
    [Show full text]
  • Current Practices Observed in Design and Drafting Occupations
    OE6000 (REV 9-66) DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE ERIC ACCESSION NO. OFFICE OF EDUCATION (Top) ED 013 345 ERIC REPORT RESUME CLEARINGHOUSE ACCESSION NUMBER RESUME DATE P.A. T.A. IS DOCUMENT COPYRIGHTED? YES 0 001001VT 001 369 16 -01 -68 ERICREPRODUCTION RELEASE? YES 0 TITLE 1001 00Current Practices Observed in Design and Drafting Occupations. 101 102 103 PERSONAL AUTHOR(S) 200 200 Squires, Carl E. INSTITUTION (FOURCE) SOURCE CODE 300300 Maricopa County Junior Coll District Arizona 310310 REPORT/SERIES NO. OTHER SOURCE SOURCE CODE 320 320Arizona Dept. of Vocat. Educ., Technical Educ. Service 330 OTHER REPORT NO. OTHER SOURCE SOURCE CODE 340 350 OTHER REPORT NO. 400400PUB'L. DATE -66 CONTRACT /GRANT NUMBER PAGINATION, ETC. 500 500EDRS PRICEMF-$0.75HC-$5.24 / 129p. 501 RETRIEVAL TERMS 600600*DRAFTING, *DESIGN, CURRICULUM IMPROVEMENT., PROGRAM IMPROVEMENT, 601601TECHNICAL EDUCATION, OBSERVATION, TRADE AND INDUSTRIAL EDUCATION, 602602*INDUSTRY, EMPLOYMENT PRACTICES, OCCUPATIONAL SURVEYS, *PERSONNEL 603603POLICY, EDUCATIONAL NEEDS, *PHYSICAL FACILITIES, ORGANIZATION, 604 605 606 IDENTIFIERS 607607Maricopa County, Arizona ABSTRACT 800 800Data which had significance for design and drafting curriculums 801 801were collected by direct observation of 21 design and drafting 802802factors within 16 selected industrial companies employing 869 803803designers and draftsmen. Observations covered (1) the number of 8048014design and drafting employees, (2) the system of draftingroom 805805organization,. (3) Job classifications, (4) hiring,
    [Show full text]
  • ENGINEERING DRAWING I Semester (AE/ ME/ CE) IA-R16
    INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad -500 043 MECHANICAL ENGINEERING ENGINEERING DRAWING I Semester (AE/ ME/ CE) IA-R16 Prepared By Prof B.V.S. N. Rao, Professor, Mr. G. Sarat Raju, Assistant Professor. UNIT I Scales 1. Basic Information 2. Types and important units 3. Plain Scales (3 Problems) 4. Diagonal Scales - information 5. Diagonal Scales (3 Problems) 6. Vernier Scales - information 7. Vernier Scales (2 Problems) SCALES DIMENSIONS OF LARGE OBJECTS MUST BE REDUCED TO ACCOMMODATE ON STANDARD SIZE DRAWING SHEET.THIS REDUCTION CREATES A SCALE FOR FULL SIZE SCALE OF THAT REDUCTION RATIO, WHICH IS GENERALLY A FRACTION.. R.F.=1 OR ( 1:1 ) SUCH A SCALE IS CALLED REDUCING SCALE MEANS DRAWING AND & OBJECT ARE OF SAME SIZE. THAT RATIO IS CALLED REPRESENTATIVE FACTOR. Other RFs are described SIMILARLY IN CASE OF TINY OBJECTS DIMENSIONS MUST BE INCREASED as FOR ABOVE PURPOSE. HENCE THIS SCALE IS CALLED ENLARGING SCALE. 1:10, 1:100, 1:1000, 1:1,00,000 HERE THE RATIO CALLED REPRESENTATIVE FACTOR IS MORE THAN UNITY. USE FOLLOWING FORMULAS FOR THE CALCULATIONS IN THIS TOPIC. DIMENSION OF DRAWING A REPRESENTATIVE FACTOR (R.F.) = DIMENSION OF OBJECT LENGTH OF DRAWING = ACTUAL LENGTH AREA OF DRAWING = V ACTUAL AREA VOLUME AS PER DRWG. = 3 V ACTUAL VOLUME B LENGTH OF SCALE = R.F. X MAX. LENGTH TO BE MEASURED. BE FRIENDLY WITH THESE UNITS. 1 KILOMETRE = 10 HECTOMETRES 1 HECTOMETRE = 10 DECAMETRES 1 DECAMETRE = 10 METRES 1 METRE = 10 DECIMETRES 1 DECIMETRE = 10 CENTIMETRES 1 CENTIMETRE = 10 MILIMETRES TYPES OF SCALES: 1. PLAIN SCALES ( FOR DIMENSIONS UP TO SINGLE DECIMAL) 2.
    [Show full text]
  • World Bank Document
    PROJECT : Vocational Training Improvement Project (VTIP) for Upgradation of Govt. Industrial Training Institute, Tura, Meghalaya, during Financial Year 2011-12 PACKAGE -1 HAND TOOLS TRADE SL.NO PARTICULARS SPECIFICATION QNTY UNIT RATE AMOUNT I II III IV V VI VII VIII DRAUGHTSMAN( 1 Box drawing instrument containing one 15 cm compass Box drawing instrument containing one 15 cm 16 Nos 595.00 9520.00 CIVIL) with pin point, pin point & lengthening bar, one pair compass with pin point, pin point & lengthening Public Disclosure Authorized Public Disclosure Authorized spring bows, rotating compass with interchangeable ink bar, one pair spring bows, rotating compass with and pencil points, drawing pens with plain ponit & cross interchangeable ink and pencil points, drawing pens point, screw driver and box of leads. with plain ponit & cross point, screw driver and box of leads. 2 Protractor celluloid 15 cm semi-circular Protractor celluloid 15 cm semi-circular 16 Nos 65.00 1040.00 3 Scale card board-metric set of eight A to H in a box 1:1, Scale card board-metric set of eight A to H in a box 16 Sets 180.00 2880.00 1:2, 1:2:5, 1:5, 1:10, 1:20, 1:50, 1:100, 1:200, 1:500, 1:1000, 1:1, 1:2, 1:2:5, 1:5, 1:10, 1:20, 1:50, 1:100, 1:200, 1:1250, 1:6000, 1:38 1/3, 1:66 2/3 1:500, 1:1000, 1:1250, 1:6000, 1:38 1/3, 1:66 2/3 4 Scale - Metric and section wooden 30 cm long marked Scale - Metric and section wooden 30 cm long 16 Sets 180.00 2880.00 with eight scales - 1:1, 1:2, 1:2:5, 1:10, 1:20, 1:50, 1:100, marked with eight scales - 1:1, 1:2, 1:2:5, 1:10,
    [Show full text]
  • Diagonals and Transversals: Magnifying the Scale
    22 Journal of the Oughtred Society Diagonals and Transversals: Magnifying the Scale Otto van Poelje Figure 1. Double diagonal scale on a Reeves & Sons protractor No. 37. Introduction be summarized as “magnifying the scale”. Taken liter- During my studies of the Gunter rule, I always passed ally, a very fine scale division can be read with a mag- quickly over the diagonal scales on the front (“transver- nifying glass, like those fitted to some type of slide rules saalschaal” in Dutch), expecting no surprises in such an or nautical sextants. Microscopes can even be equipped elementary drawing tool until my attention was drawn with eyepiece micrometers (reticules) or stage microme- to some specimens with apparent drawing errors in that ters (glass ruler on object plane) for extreme precision. area. Gunter rules have non-linear scales for goniometri- In case of measurement devices with an index pointer, cal constructions and calculations, but also linear scales: the scale can be magnified by “leverage” of the pointer: these are called scales of “Equal Parts” (E.P.), and in for example, Tycho Brahe’s great mural quadrant at his most cases they can be recognized by a “forerunner” of a Uraniborg observatory had a circular scale of some 7 feet finer division than the full scale itself, see Figure 2. radius for that purpose (1582). In this paper, however, we will focus on magnifying the scale by adding enlarged scales, either in a lateral direction (diagonal, transversal) or in the same direction (Vernier). Figure 2. Equal Parts scale with forerunner containing Usage of diagonal scales the finer division.
    [Show full text]
  • General Drafting
    This is a reproduction of a library book that was digitized by Google as part of an ongoing effort to preserve the information in books and make it universally accessible. http://books.google.com UCLA MAP LlbRARY REFERENCE ONLY al DEPARTMENT OF THE ARMY TECHNICAL MANUAL IM 5-23ſ DEPARTMENT OF THE AIR FORCE TECHNICAL ORDER II] |-25-1 [3 GENERAL DRAFTING DEPARTMENTS OF THE ARMY AND THE AIR FORCE OCTOBER 1962 *TM 5–230/TO OO–25–103 Map TECHNICAL MANUAL librarv DEPARTMENTS OF THE ARMY NO. 5–230 -T- AND THE AIR FORCE TECHNICAL ORDER 3 & 2, NO. 00–25–103 i z- WASHINGTON 25, D.C., 29 October 1962 L º, º D. 3 GENERAL DRAFTING Paragraph Page CHAPTER 1. BASIC DRAFTING EQUIPMENT___________________________________________ 1–28 3 2. THE MEANING OF LINES Section I. The geometry of lines -------------------------------------------------------- 29–30 11 II. Construction of straight lines------------------------------------------------- 31–35 11 III. Construction of curved lines-------------------------------------------------- 36–37 13 IV. Line weights and conventions------------------------------------------------- 38–47 16 V. Use of scales---------------------------------------------------------------- 48–52 22 CHAPTER 3. LETTERING Section I. Freehand lettering requirements_-____________________________________________ 53–58 27 II. Freehand letter formation---------------------------------------------------- 59–64 30 III. Mechanical lettering--------------------------------------------------------- 65–67 36 CHAPTER 4. ENGINEERING CHARTS AND GRAPHS Section
    [Show full text]