Engineering Drawing & GD & T

Explore first angle and third angle orthographic projections, learn how observer position dictates the plane of projection, and identify the symbols used to represent these views.

Explains three coordinate systems used in engineering drawing: Cartesian with X, Y, Z and origin; spherical with distance and two angles; cylindrical with Rho, Phi, and Z.

Discover how datum provides reference planes, points, and lines with primary, secondary, and tertiary datum, then learn six degrees of freedom: translations and rotations.

Describe how the tolerance frame and feature control frame convey geometric tolerances using symbols for form, profile, orientation, location, and runout, plus datum references and projected tolerance zones.

Show how the control frame uses the position symbol to fix feature's position within a 0.003 diameter tolerance zone at maximum material condition, referenced to A, B, and C.

Explore the use of diverse lines in engineering drawing, from thick and thin lines to dashed, dotted, and center lines, including outlines, dimension lines, construction lines, and hatching.

Master clean lettering and precise dimensioning by applying single stroke and gothic letters, dimension lines with arrowheads, and leaders; use line and directional systems for functional and non-functional dimensions.

Explore scale dimensions in engineering drawings, from full-size and enlarging scales to graphical and representative fraction scales, with practical units, linear measurements, and reading methods.

Master freehand sketching using correct proportions and essential tools to create clear sketches, not to scale, then convert them into scale drawings with circles, arcs, center lines, and dimensions.

Explore plane curves in engineering drawing, including ellipse, parabola, and hyperbola, defined by focus and directrix. Understand their construction methods and applications in arches, bridges, and reflectors.

Master geometric construction methods for engineering drawings, including bisecting lines, drawing perpendiculars and parallels, dividing lines and circles, bisecting angles, constructing regular polygons, and tangents.

Explore simple and compound mechanisms by fixing different links to transmit motion, forming machines through inversion. Examine crank, connecting rod, and slider crank configurations, including single and double slider mechanisms.

Explore the applications of engineering drawing and design across manufacturing, structural, and electrical systems, including layout drawings, assembly and installation drawings, modification and procurement control drawings, and mechanical schematic diagrams.

Explore career options in engineering drawing and design through graphical drawings and CAD as essential communication tools. Discover roles such as graphics engineer, architect, interior designer, and city planner.