AGM 2050 EXAM 1 QUESTIONS & VERIFIED ANSWERS
What's the importance of plans and drawings? - Answers - Communication between
designer and fabricator
Useful in trouble shooting problems
Make cost estimations faster and more accurate
reduction in waste generation from a particular job
Drawings - Answers - Carefully drawn (use of drawing instruments)
For larger, more complicated projects
Drawn to scale with dimensions and different views
Sketches - Answers - Not a formal drawing
Rough outline of object (generally freehand)
Generally for small and simple objects
not usually drawn to scale, represents size and/or shape
Protractor - Answers - used for drawing or measuring angles
Triangles - Answers - with both a 45 and a 30x60, inclined lines can be drawn at any
angle divisible by 15
When do you use a 30x60x90 triangle? - Answers - for isometric drawings
What happens when you square your t-square? - Answers - Thats your side, thats the
only one you know that is truly 90 degrees
Compass - Answers - used to draw circles, arcs and ellipses
Scales - Answers - allows the size of the object to be reduced proportionately
Engineering scale - Answers - goes by 10 - metric
Architecture scale - Answers - standard - in inches
T-Square - Answers - used to layout 90 degree lines on drawings (other angles possible
with use of triangles)
Drawing board - Answers - left and right hand edges must be straight so blade of
square will form a true right angle
Dividers - Answers - used for measuring and transferring distances
Boarder Line - Answers - to frame drawing, usually 1/2" from edge of paper
,Object line - Answers - to show visible edges of drawing
Hidden line - Answers - to show hidden edges on drawing
ie. cut hole, something that you cannot see
Do you show hidden lines on a 3D image? - Answers - No
Dimension line - Answers - used to indicate the dimension and location
Are dimension lines used in 3D images? - Answers - No
Break line - Answers - to indicate a break in the drawing
Center line - Answers - shows centers, typically for drawing circles
Leader Line - Answers - used to insert a comment on a drawing
used to leave notes ie. diameter of hole
What kind of lettering needs to be used? - Answers - Capital lettering with consistent
sizes
keep lettering outside edges of drawing object
What does the number to the left of the scale indicate? - Answers - The proportion by
which it's scaled down
What happens on scales? - Answers - All increments are shortened according to
proportion
Orthographic drawing - Answers - 2D, head on view of each side of object
This is where dimensions will be, want minimal dimensions
What's another name for orthographic drawing? - Answers - orthographic projection
Isometric Pictorial drawing - Answers - 3D view with a vertical axis and the other 2 axes
at 120 degrees from the vertical
Oblique pictorial drawing - Answers - 3D view with a vertical and horizontal axis and the
3rd axis at an angle to the horizontal
Bill of Material - Answers - lists the size, quantity, description and costs of each item
Use standard sizes for materials so that costs can be determined easier
Whats the advantage of preparing a Bill of Materials prior to starting a job? - Answers -
saves time and money
, When selecting Bill of materials.... - Answers - try to select materials so you have
minimum waste
Procedure for developing bill of materials - Answers - 1. Study the drawing carefully to
understand all of the components and dimensions
2. determine the amount of raw materials required
3. determine the amount of hardware required
4. determine types and amounts of fasteners required
5. Tabulate quantities required
When do you use the actual size of lumber? - Answers - In a drawing
When do you use the nominal size of lumber? - Answers - In a bill of materials
Nominal size - Answers - the common sizes ie. 2x4 board
Actual size - Answers - the actual size of the board ie. a 2x4 is actually 1.5 x 3.5
Tool fitting definition - Answers - The sharpening, cleaning, redressing, and adjusting of
tools so that they can better do the work they were designed to do
Most cutting tools use ________ for cutting - Answers - inclined planes
Single inclined plane - Answers - for cutting softer things, not much materials backing
the blade
ie. wood chisel, mower blade, drill, saws
Double inclined plane - Answers - a plane made by two bevels - more material backing
the blade
ie. axe, cold chisel, splitting wedge
Combination of inclined planes - Answers - bypass shears, scissors
What are the 3 shapes of cutting edges? - Answers - Concave, convex, straight
Straight cutting edge - Answers - good backing metal, relatively sharp points, easy to
sharpen
ie. spade bits, mower blades, twist drills
Concave cutting edge - Answers - Little backing metal, very fine point
ie. plane iron, tin snips
Convex cutting edge - Answers - most backing material, moderately fine point
ie. axes, wedges
What angle does a center punch need to be? - Answers - 60-75°
What's the importance of plans and drawings? - Answers - Communication between
designer and fabricator
Useful in trouble shooting problems
Make cost estimations faster and more accurate
reduction in waste generation from a particular job
Drawings - Answers - Carefully drawn (use of drawing instruments)
For larger, more complicated projects
Drawn to scale with dimensions and different views
Sketches - Answers - Not a formal drawing
Rough outline of object (generally freehand)
Generally for small and simple objects
not usually drawn to scale, represents size and/or shape
Protractor - Answers - used for drawing or measuring angles
Triangles - Answers - with both a 45 and a 30x60, inclined lines can be drawn at any
angle divisible by 15
When do you use a 30x60x90 triangle? - Answers - for isometric drawings
What happens when you square your t-square? - Answers - Thats your side, thats the
only one you know that is truly 90 degrees
Compass - Answers - used to draw circles, arcs and ellipses
Scales - Answers - allows the size of the object to be reduced proportionately
Engineering scale - Answers - goes by 10 - metric
Architecture scale - Answers - standard - in inches
T-Square - Answers - used to layout 90 degree lines on drawings (other angles possible
with use of triangles)
Drawing board - Answers - left and right hand edges must be straight so blade of
square will form a true right angle
Dividers - Answers - used for measuring and transferring distances
Boarder Line - Answers - to frame drawing, usually 1/2" from edge of paper
,Object line - Answers - to show visible edges of drawing
Hidden line - Answers - to show hidden edges on drawing
ie. cut hole, something that you cannot see
Do you show hidden lines on a 3D image? - Answers - No
Dimension line - Answers - used to indicate the dimension and location
Are dimension lines used in 3D images? - Answers - No
Break line - Answers - to indicate a break in the drawing
Center line - Answers - shows centers, typically for drawing circles
Leader Line - Answers - used to insert a comment on a drawing
used to leave notes ie. diameter of hole
What kind of lettering needs to be used? - Answers - Capital lettering with consistent
sizes
keep lettering outside edges of drawing object
What does the number to the left of the scale indicate? - Answers - The proportion by
which it's scaled down
What happens on scales? - Answers - All increments are shortened according to
proportion
Orthographic drawing - Answers - 2D, head on view of each side of object
This is where dimensions will be, want minimal dimensions
What's another name for orthographic drawing? - Answers - orthographic projection
Isometric Pictorial drawing - Answers - 3D view with a vertical axis and the other 2 axes
at 120 degrees from the vertical
Oblique pictorial drawing - Answers - 3D view with a vertical and horizontal axis and the
3rd axis at an angle to the horizontal
Bill of Material - Answers - lists the size, quantity, description and costs of each item
Use standard sizes for materials so that costs can be determined easier
Whats the advantage of preparing a Bill of Materials prior to starting a job? - Answers -
saves time and money
, When selecting Bill of materials.... - Answers - try to select materials so you have
minimum waste
Procedure for developing bill of materials - Answers - 1. Study the drawing carefully to
understand all of the components and dimensions
2. determine the amount of raw materials required
3. determine the amount of hardware required
4. determine types and amounts of fasteners required
5. Tabulate quantities required
When do you use the actual size of lumber? - Answers - In a drawing
When do you use the nominal size of lumber? - Answers - In a bill of materials
Nominal size - Answers - the common sizes ie. 2x4 board
Actual size - Answers - the actual size of the board ie. a 2x4 is actually 1.5 x 3.5
Tool fitting definition - Answers - The sharpening, cleaning, redressing, and adjusting of
tools so that they can better do the work they were designed to do
Most cutting tools use ________ for cutting - Answers - inclined planes
Single inclined plane - Answers - for cutting softer things, not much materials backing
the blade
ie. wood chisel, mower blade, drill, saws
Double inclined plane - Answers - a plane made by two bevels - more material backing
the blade
ie. axe, cold chisel, splitting wedge
Combination of inclined planes - Answers - bypass shears, scissors
What are the 3 shapes of cutting edges? - Answers - Concave, convex, straight
Straight cutting edge - Answers - good backing metal, relatively sharp points, easy to
sharpen
ie. spade bits, mower blades, twist drills
Concave cutting edge - Answers - Little backing metal, very fine point
ie. plane iron, tin snips
Convex cutting edge - Answers - most backing material, moderately fine point
ie. axes, wedges
What angle does a center punch need to be? - Answers - 60-75°
