SCP 311 Blueprint Reading for Carpentry

Course Number: 311

This course begins with a thorough explanation of how blueprints are structured and the conventions that are used in making them and reading them. The course continues with information on how to sketch in the style of a blueprint to convey information simply and completely. These principles are then applied to detail drawings for buildings, piping systems, electrical equipment, and sheet metal drawings. The course then concentrates on both direct measurements and calculated measurements (e.g., area, torque, speed, and flow rate). Chapter Eight, Metric Measurement, describes the basic kinds of metric measurement, the use of prefixes (kilo, centi, milli, etc.), and how and when to convert between metric and English measurement. The remaining chapters focus on the application of measuring tools and instruments for various purposes.

Recommended Contact Hours - 15

Chapter 1: Introduction to 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.

Chapter 2: 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.

Chapter 3: Building Drawings

Topics: Buildings and building sites; Symbols and conventions; Plat, 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 plat.
• List the contents of a set of building drawings.
• Describe the purpose of a structural drawing.

Chapter 4: Piping and Plumbing Drawings

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.

Chapter 5: Electrical Drawings

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.

Chapter 6: Sheet Metal Drawings

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.

Chapter 7: Units of Measurement

Topics: Length; Area; Volume; Angles; Time; Speed and velocity; Mass and weight; Force; Work and power; Pressure; Temperature; Electricity

Learning Objectives:

• Identify various units of measurement.
• State the definition of the joule, the coulomb, and the horsepower
• Explain how to calculate pressure.
• Explain the difference between mass and weight.
• Demonstrate how to measure the volume of an object.
• Explain the difference between the Celsius scale and the Fahrenheit scale.

Chapter 8: Metric Measurement

Topics: Length, area, volume; Mass; Frequency; Speed and velocity; Acceleration; Force and weight; Work, energy, and power; Temperature; Current; Light

Learning Objectives:

• List the seven base units in the SI (metric) system.
• Name three derived units.
• Define work and power in SI units.
• Explain what power is and how it is measured.
• Name two metric measuring instruments and their U.S. Standard equivalents.

Chapter 9: Linear Measurement

Topics: Units; Measurement error; Tolerances; Scales and rules; Scribers and dividers; Bevel gauge; Calipers; Combination square; Using a micrometer

Learning Objectives:

• List five units used for making linear measurements.
• Demonstrate how to use a micrometer.
• Explain what each head of a combination square is used for.
• State the definition of parallax error.
• Define the different types of tolerance.

Chapter 10: Surface Measurement

Topics: Gauge blocks; Measuring screw threads, radius, surface texture; Hardness testing; Testing surface coatings; Detecting defects

Learning Objectives:

• Explain the difference between a continuous dial and a balanced dial on a dial indicator.
• State the definition of pitch on a screw.
• Name two hardness tests.
• Explain why nondestructive testing is preferable to destructive testing on surface coatings.