Maricopa Community Colleges  ABA154   19972-20046 
Official Course Description: MCCCD Approval: 10/22/96
ABA154 19972-20046 L+L 2 Credit(s) 4 Period(s)
Fabrication I - Parallel Line Development
Parallel line development. Pattern layout procedures and fabrication of selected ductrun fittings. Prerequisites: (Indentured status with the Arizona Builders Alliance and ABA153) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABA154   19972-20046 Fabrication I - Parallel Line Development
1. Describe correct parallel line development layout procedures. (I)
2. Layout patterns utilizing basic parallel line development . (II)
3. Demonstrate the proper cutting and forming of basic patterns utilizing parallel line development. (III)
4. Fabricate selected ductrun fittings. (IV)
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MCCCD Official Course Outline:
 
ABA154   19972-20046 Fabrication I - Parallel Line Development
    I. Parallel Line Development - Sequence of Pattern Development
        A. Draw plan and elevation views
        B. Locate measuring lines on the elevation
        C. Draw stretchout on pattern
        D. Locate measuring lines onto the pattern
        E. Transfer the length of the measuring lines onto the pattern
        F. Connect the points on the measuring lines
        G. Make allowances for connections
      II. Parallel Line Development - Layout Exercise
          A. Pattern development
          B. Tools and materials
          C. Procedure
        III. Pattern Cutting and Forming
            A. Pittsburgh lock duct
            B. Mitered duct piece
            C. Radius elbow.
            D. Other
          IV. Fabrication Exercise
              A. Riveted lap seam
              B. Grooved lock seam
              C. Rectangular Y-branch
              D. Round offset - 3 piece
              E. Gored elbow
              F. 90 degree tee intersecting a round pipe
              G. Other
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