Reading Blueprints

Lesson 1 - Introduction to Reading Blueprints

Topics:

Detail drawings; Notes and dimensions; Assembly and pictorial drawings; Orthographic projections; Auxiliary views; Sections

Learning Objectives:

– Identify details, markings, and machine parts from an assembly drawing.
– Identify an object from an orthographic drawing.
– Identify elements located within the title block of a detail drawing.
– Explain why more than one orthographic projection is needed to show an object on a blueprint.

Lesson 2 - Reading Machine Part Blueprints

Topics:

Simple machines; Screw threads; Heads; Rivets; Welds; Pins; Keys; Springs; Gears; Bearings; Belts and pulleys

Learning Objectives:

– Describe what a machine is, and explain what it does.
– Name the two basic methods of joining machine parts.
– Name and identify from an exhibit several types of threaded fasteners.
– Name the two basic methods of permanent joining.
– Identify gears, bearings, and belt drives on drawings.
– Identify types of screw threads from a specification.

Lesson 3 - Reading Machine Blueprints

Topics:

Machine tools; Exploded views; Assembly and detail drawings; Drafting techniques

Learning Objectives:

– Name the main parts of a lathe.
– State the definition of an exploded view.– Identify an assembly drawing.– Identify a compound rest swivel on an assembly drawing.– Identify a specific part on an assembly drawing.

Lesson 4 - Reading Sheet Metal Blueprints

Topics:

Sheet metal; Ventilation systems; Ductwork; Parallel, miter, and radial development; Extra metal for assembly

Learning Objectives:

– Describe the difference among coils, strips, and sheet metal.– Describe how a ventilation system works.– State the purpose of an arrow on a duct symbol.– Demonstrate how to lay out a development.– Define a radial development of a truncated pyramid.

Lesson 5 - Reading Building Blueprints

Topics:

Buildings and building sites; Symbols and conventions; Plant, site, and floor plans; Working drawings

Learning Objectives:

– Name building materials, given their standard symbols.– Explain how to find useful information on a flow diagram.– Explain how to find useful information on an industrial plant.– List the contents of a set of building drawings.– Describe the purpose of a structural drawing.

Lesson 6 - Reading Hydraulic and Pneumatic Blueprints

Topics:

Fluid systems; Pascal's Law; Multiplying forces; Pistons and cylinders; Fluid system components; Symbols

Learning Objectives:

– Name the components represented by common symbols on hydraulic and pneumatic drawings.– Name the components in a simple hydraulic power system.– Name the components in a simple pneumatic power system.– State Pascal's Law.– Discuss the purposes of the components of hydraulic systems.

Lesson 7 - Reading Piping and Plumbing Blueprints

Topics:

Piping and plumbing materials; Kinds of joints; Drawings; Joining metal pipes

Learning Objectives:

– State the definition of piping.– Explain why joints are sometimes brazed instead of soldered.– Explain how to assemble a screwed joint.– Identify different types of pipe joints.– Identify piping-system components shown in a single-line drawing.

– Define electrochemical corrosion.

Lesson 8 - Reading Electrical Blueprints

Topics:

Importance of electrical drawings; Electric power; Electrical drawings and wiring; Using electrical drawings

Learning Objectives:

– Identify different electrical symbols on a drawing.– Identify the power distribution panels in your plant.– Identify different types of conduit and cable.– Select the best electrical drawing to use when looking for a faulty circuit between the basement and the first floor.– Explain how electricity at 480 volts is reduced by a transformer to 120/240 volts.

– Define the terms voltage, current, and power.

Lesson 9 - Reading Air Conditioning and Refrigeration Blueprints

Topics:

Principles of refrigeration; Component drawings; Principles of air conditioning; Air conditioning systems

Learning Objectives:

– Explain how a refrigeration system works.– Describe the types of ac controls.– Name three kinds of condensers used in air conditioning systems.– Explain the difference between unitary and central air-conditioning equipment.

– Explain how to find useful information on a duct drawing.

Lesson 10 - Sketching

Topics:

Using and making sketches; Kinds of sketches; Orthographic, isometric, and perspective sketches

Learning Objectives:

– Name the four kinds of sketches.– Identify an isometric sketch.– Describe the appearance of a perspective drawing.– Discuss how to sketch straight lines and curved lines.– State the definition of a vanishing point