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engr 111a, 11.1 sections

engr 111a, 11.1 sections - ENGR 111 A Fall 2009 N N N N N...

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ENGR 111 A Fall 2009
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List and recognize the hatching symbols for Cast Iron, Steel, Aluminum, Copper, and Zinc N Identify a drawing as being a: full section, half section, offset section, broken-out section, revolved section, or removed section N Generate the above mentioned sectional views given complete orthographic views of an object N Use revolutions and partial views as conventional practices to construct sectional views of an object N List the parts of a drawing which do not get crosshatched, even if the cutting plane passes through them N Sketch a cutting plane for any of the sections listed above
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Depict assembly of parts N Show internal detail N Replace complex orthographic views N Describe materials in an assembly
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What is ANSI? .
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ANSI31 -- Cast Iron, General N ANSI32 -- Steel N ANSI33 -- Brass, Bronze, Copper N ANSI38 -- Magnesium, Aluminum N Earth
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Different parts at different angles N Hatch spacing of about 1/16”-1/8” N Cutting plane line -- 0.60 mm N Section or hatch lines -- 0.20 mm N Visible lines -- 0.50 mm N Not parallel or perpendicular to boundary
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When sectioning an assembly of several parts, draw section lines at varying angles to distinguish separate parts.
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Most ( but not all ) of the time, a front view and top view are used to show a section.
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The sight arrows at  the end of the cutting  plane are always  perpendicular to the  cutting plane.
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