Maricopa Community Colleges  IMC143   19982-20086 
Official Course Description: MCCCD Approval: 07/22/08
IMC143 19982-20086 LEC 1 Credit(s) 1 Period(s)
Field Measurement
Field measure practices, layout of ductruns and fittings, solving commonly occurring field measuring problems. Solving field measurement problems. Fabrication procedures for fiberglass ducts, skills practice for layout and fabrication of fiberglass ductrun fittings.
Prerequisites: None.
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MCCCD Official Course Competencies:
 
IMC143   19982-20086 Field Measurement
1. Describe common practices used for field measuring and layout of ductruns and fittings. (I)
2. Solve specific field measurement problems. (II)
3. Describe materials used for fabricating fiberglass ducts. (III)
4. Describe procedures for the layout and fabrication of specific fiberglass ductrun fittings. (IV, V)
5. Identify tools and materials necessary for the fabrication of specific fiberglass ductrun fittings. (VI, VII)
6. Demonstrate layout and fabrication of specific fiberglass ductrun fittings. (VI, VII)
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MCCCD Official Course Outline:
 
IMC143   19982-20086 Field Measurement
    I. Field Measurement
        A. Clearances
        B. Coordination with other trades
        C. Trigonometric Formulas
          1. Complementary angles
          2. Functions
          3. Conventions
          4. Commonly used formulae
        D. Trigonometric functions table
        E. Rules
          1. Round elbows
          2. Definitions
      II. Solving field measurement problems
          A. round offsets
          B. rectangular duct offsets
          C. plain offsets for rectangular ducts
          D. Job site measurements
          E. Shop fabrication
          F. Materials and equipment
          G. Field measurement check drawing
          H. Review problem
        III. Fiberglass materials
            A. Composition
            B. Molded round sections or rectangular
            C. Uses
            D. Connections
            F. Foil wrap
            G. Ratings
          IV. Materials and tools for fiberglass duct fabrication
              A. Advantages and limitation
              B. Types
              C. Sizes
              D. Storage
              E. Tools
                1. Color coded fiberglass tools
                2. Use of color coded tools
            V. Layout Procedures
                A. Techniques
                  1. Accurate cutting
                  2. Corner fold grooves
                  3. Modified shiplap
                  4. V-groove
                B. Repairs
                  1. Tape patch
                  2. Fire retardant adhesive
                C. Measurements
                  1. Keyed to corner breaks
                  2. Inside dimensions
                  3. Outside cross-section dimension
                  4. Add-on allowances
                D. Straight duct sections
                  1. One piece
                  2. Two piece u shaped
                  3. Two piece l shaped
                  4. Four piece
              VI. Layout and fabrication practice
                  A. Computing board size
                  B. Board selection and layout
                  C. Determining the stretchout
                  D. Making the pattern
                  E. Color coded tool use
                  F. Cutting
                  G. Slip joints
                  H. Folding
                  I. Staple
                  J. Tape
                  K. Iron
                  L. Fittings
                    1. Splitter dampers
                    2. Turning vanes
                  M. Rules for rectangular air handling ductruns
                VII. Practice exercises
                    A. 90 degree elbow
                      1. Tools and materials
                      2. Procedures
                      3. Alternative procedure A
                      4. Alternative procedure B
                    B. Two way transition
                      1. Tools and materials
                      2. Procedure
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