Maricopa Community Colleges  ABC149   20052-20086 
Official Course Description: MCCCD Approval: 07/22/08
ABC149 20052-20086 L+L 1 Credit(s) 3 Period(s)
Gutters, Downspouts and Roof Flashing
Drainage systems design and calculation of downspout, drain and gutter sizes. Weather sealing and use of roof flashing. Fabrication of drainage components and fabrication and installation of flashing components.
Prerequisites: (Registered apprentice status and ABC140) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABC149   20052-20086 Gutters, Downspouts and Roof Flashing
1. Describe specific principles of roof design and drainage systems. (I)
2. Calculate specific downspout, drain and gutter sizes. (II)
3. Fabricate selected drainage components. (III)
4. Describe the principles of weather sealing and their application to architectural sheet metal work. (IV)
5. Demonstrate fabrication of selected flashing components. (V)
6. Describe installation procedures for specific flashing members. (VI)
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MCCCD Official Course Outline:
 
ABC149   20052-20086 Gutters, Downspouts and Roof Flashing
    I. Roof drainage
        A. Factors
          1. Area to be drained
          2. Size of gutters, downspouts and outlets
          3. Slope of roof
          4. Type of building
          5. Appearance of system
        B. Design capacity - quantity of water
          1. Roof area
          2. Slope
          3. Intensity of rainfall
      II. Downspout and gutter sizing calculations
          A. Downspouts
            1. Roof size - square feet
            2. Rainfall - inches/hour
          B. Drains and gutters
            1. Slope - inches
            2. Rainfall - inches/hour
            3. Roof size - square feet
        III. Fabrication
            A. Conductor elbow
              1. Tools and materials
              2. Procedure
            B. Rectangular conductor
              1. Tools and materials
              2. Procedure
            C. Rectangular outlet
              1. Tools and materials
              2. Procedure
            D. Rectangular gutter
              1. Tools and materials
              2. Procedure ABC149Effective Term:
            E. Conical gutter outlet
              1. Tools and materials
              2. Procedure
            F. Rectangular downspout
              1. Tools and materials
              2. Procedure
          IV. Weather sealing
              A. Built-up roofing systems
                1. Decking
                2. Vapor barrier
                3. Insulation
                4. Bitumen weather proofing with aggregate
              B. Flashing
                1. Base
                2. Cap or counter
                3. Edging
            V. Fabrication
                A. Shingle roof flashing
                  1. Tools and materials
                  2. Procedure
                B. Chimney flashing
                  1. Tools and materials
                  2. Procedure
                C. Metal coping
                  1. Tools and materials
                  2. Procedure
              VI. Installing chimney flashing
                  A. Components
                    1. Apron
                    2. Base flashing
                    3. Counter flashing
                  B. Tools and materials
                  C. Procedure
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