Alphabet of Lines PDF

Summary

This presentation introduces different types of lines used in technical drawings. It covers various line types, including visible, hidden, center, section, and dimension lines, and their applications. The presentation also includes learning objectives and practice questions related to technical drawing concepts.

Full Transcript

Alphabet of Lines By: Jay Rupert L. Yasis Learning Objectives 1 2 3 Identify the Interpret signs, Draw and perform different lines symbols, and line exercises used in illustrating data according to object....

Alphabet of Lines By: Jay Rupert L. Yasis Learning Objectives 1 2 3 Identify the Interpret signs, Draw and perform different lines symbols, and line exercises used in illustrating data according to object. job specification; Review of the Find the area and Previous perimeter of the Lesson given object. Review of the Find the area and Previous perimeter of the Lesson given object. Review of the Previous Lesson Find the area and circumference of the given object. Basic Lines By: Jay Rupert L. Yasis Horizonta l Lines +It is a line parallel to the horizon or the base line. Vertical Lines +It is a line perpendicular to the plane of the horizon. Diagonal Lines +It is a line inclined obliquely from a reference line. Find Me +Directions: Study the given cartesian plane of linear graph. Which part is the representation of Vertical, Horizontal and Diagonal Lines? Alphabet of Lines By: Jay Rupert L. Yasis Visible Line a thick line that represents the visible edges or outline of the object; also known as the object line. Hidden Line +a thin line composed of short dashes about 2-3 millimeters long with space between dashes about 1-2 millimeters wide; +it represents the surface or edges that cannot be seen. Center Line a thin line consisting of two long dashes and short dash drawn alternately with a gap of at least 2 millimeters in between; Center Line +it represents the axis or center of symmetrical shapes like a ball, washer, rectangular block, cube Section Line a thin lines to show the surface that has been cut; they are spaced evenly at 45 degrees with the horizontal to make shaded effect. Extensio n Line a thin line that extends from the object in order to show dimension limits Dimensio n Line a thin line with an arrowhead in one end used to indicate the measurements of the object Long- break Line a medium thick line consisting of broken and straight lines drawn alternately. This is also known as the limiting line. Short- break Line A thick line drawn in freehand to show details that a part has been cut off or broken out. Leader Line A short inclined thin line with an arrowhead at the end and short horizontal line on the other end. Phanto m Line A thin line that shows position(s) of part of an object that moves drawn by two short dashes and one long dash. Cutting -plane Line A thick lines used to indicate an imaginary cut through an object along the line. Directions: Identify the alphabet of lines based on the given picture. Assignmen t Scoring Rubric Accuracy 10pts Neatness 10 pts Timeliness 5pts

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