1. Planning and Drawing an Agricultural Project

2. Planning An Agricultural Project  Blueprints are used to plan projects. They can be:  Hand Drawn – Can be simple or complicated  CAD – Computer Assisted Drawing – most accurate and simplest if you have the software

3. Simple Drawings  Tools needed to make a simple drawing.  Sharp pencil – harder the lead the better. #7 is best  Drawing Board – Flat smooth surface – should be a perfect squared or rectangle with 90 degree angles.  Protractor- Used to measure and draw angles.  Good Eraser – A eraser unattached to a pencil is best.  12 inch ruler or engineers scale (3 sided)  Compass - Used for drawing circles

4. Tools Continued  T- Square – Drawing horizontal lines  Masking Tape – Do not use clear tape.  Triangles - For drawing angles  30 x 60 x 90 degree triangle  45 x 45 X 90 degree triangle

5. Planning An Agricultural Project  Detailed plans  Drawing board to attach paper  Masking tape  T square for drawing horizontal lines  Right triangle for vertical lines  Scale  Instrument with increments shortened according to proportion 1. Flat scale- looks like a ruler 2. Triangular scale- three sided, but 6 scales

6. Planning An Agricultural Project  The basics of drawings  Sketch  Rough drawing with no dimensions (free hand)  One Dimensional View – Shows just one side of an object. (front, side, bottom, top, etc)  Pictorial drawing  Shows all three views 1. Top 2. Side or end 3. Front

7. Width Length Side View One Dimensional Drawing

8. Planning An Agricultural Project

9.  A scale drawing represents objects in exact proportions  If the scale is ¼”=1’ then ¼” on the drawing would equal 1 foot on the object  So…. A 2” line on the drawing would equal what on the object?  8 feet  Scale will vary depending on the size of the object

10. Planning An Agricultural Project  Determining Materials  Bill of material  List and description of materials needed to complete a project  BF= board foot – measuring unit for lumber  Penny – nail size

11. Board Feet Thickness (inches) X Width (inches) Length (feet) 12 How many board feet are in a board 1” X 12” X 8’? 1” X 12” X 8’ 12 BF = 96 12 = 8 BF

12. Board Feet  Assignment:  Calculate the board feet required to build our class project  (24) 2’’X4’’X8’  (4) 2’’X6’’X10’  (8) 2’’X4’’X10’

13. Drawing Assignment  One Dimensional view of a block of wood ( 5 drawings)  One pictorial view of the same block (3-D)  Pictorial view of a Latch  One dimensional view of a Cornhole Board (3 sides or drawings).  Pictorial view of a Cornhole Board (3-D)

14. Scoring Projects  The following criteria will be used to evaluate your project.  Accuracy – are your measurement correct. Are all line perfectly straight and drawn with a straight edge.  Neatness – Are all lines neat, erasures complete with no smudge marks.  Set-Up – Are the borders and legend drawn correctly and accurately, are all numbers and letter written correctly.  Completeness – Is the drawing correctly drawn and are all dimensions accurate and correct.