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Blueprint Reading for the Machine Trades, Sixth Edition Unit 10: Typical Dimensions. Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach. Typical Dimensions. “TYP” means typical Used to avoid repetitious dimensions on a drawing
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Blueprint Reading for the Machine Trades, Sixth Edition Unit 10: Typical Dimensions Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach
Typical Dimensions • “TYP” means typical • Used to avoid repetitious dimensions on a drawing • E.g.—when it appears after a radial dimension-all undimensioned radii are considered to be the same • Use where repetition of same pattern is used
Right Triangles • Right triangles can be dimensioned by • Two sides • One side and one angle
Right Triangles • When angle is 45°-two sides are equal • Hypotenuse is equal to a length that is 1.414 X the length of the side
Repetitive Features • Repetitive features or dimensions may be specified by using an “X” after the quantity followed by the dimension • “X” designates “times”
MISC DETAILS 1. How much material remains between a hole and the nearest outside edge of item #1? .189
MISC DETAILS 2. What is the specified material thickness ofitem 2? Brass .040
MISC DETAILS 3. What is the total quantity of the three items shown? 5
MISC DETAILS Calculate the dimensions for the letter A 1.30
MISC DETAILS Calculate the dimensions for the letter B 2.10
MISC DETAILS Calculate the dimensions for the letter C 45°
MISC DETAILS Calculate the dimensions for the letter D 1.8382
MISC DETAILS Calculate the dimensions for the letter E 2.6382
MISC DETAILS Calculate the dimensions for the letter F 2.30
MISC DETAILS Calculate the dimensions for the letter G 2.30
MISC DETAILS Calculate the dimensions for the letter H .70
MISC DETAILS Calculate the dimensions for the letter I .45
MISC DETAILS Calculate the dimensions for the letter J 100°
MISC DETAILS Calculate the dimensions for the letter K 130°
MISC DETAILS Calculate the dimensions for the letter L .250
MISC DETAILS Calculate the dimensions for the letter M 35°
MISC DETAILS Calculate the dimensions for the letter N 20°
MISC DETAILS Calculate the dimensions for the letter O 30°
MISC DETAILS Calculate the dimensions for the letter P .30
MISC DETAILS Calculate the dimensions for the letter Q .40
Offset Pivot BRKT 1. What type of sectional view appears on the drawing? Broken out
Offset Pivot BRKT • Is the material (a) nickel, or (b) molybdenum or (c) chromium alloy? (b) molybdenum
Offset Pivot BRKT • Is the material (a) low-, (b) medium-, or (c) high-carbon steel? (b) medium
Offset Pivot BRKT • How far does the boss extend above the its surrounding surface? .25
Offset Pivot BRKT • How far does the pad extend above the its surrounding surface? .10
Offset Pivot BRKT • What is the small diameter of the tapered hole? .3375
Offset Pivot BRKT • What is the maximum width of the slotted hole? .41
Offset Pivot BRKT • What is the minimum length of the slotted hole? 1.47
Offset Pivot BRKT • What is the minimum width of the pad? .88
Offset Pivot BRKT • What is the maximum length of the pad? 2.03
Offset Pivot BRKT Calculate the dimension for the letter: A .70
Offset Pivot BRKT Calculate the dimension for the letter: B 1.40
Offset Pivot BRKT Calculate the dimension for the letter: C 2.60
Offset Pivot BRKT Calculate the dimension for the letter: D .80
Offset Pivot BRKT Calculate the dimension for the letter: E .707
Offset Pivot BRKT Calculate the dimension for the letter: F .30
Offset Pivot BRKT Calculate the dimension for the letter: G 3.00
Offset Pivot BRKT Calculate the dimension for the letter: H .85
Offset Pivot BRKT Calculate the dimension for the letter: I 1.30
Offset Pivot BRKT Calculate the dimension for the letter: J 5.10
ADJ MTG ARM 1. What is the pitch (decimal value) of the threads? .05
ADJ MTG ARM 2.What thread series is specified? Coarse
ADJ MTG ARM 3. What does the B in the thread specification designate? Internal Threads
ADJ MTG ARM 4. How much surface roughness is permitted on the pad face? .000032