Roofing

Construction Drawing Requirements

The following information is required on all shed roof construction drawings:

1. Size of support post for roof
2. Header size for roof support
3. Spans and point loads for headers
4. Pitch of roof
5. Rafter size and direction
6. Spacing and span for rafters
7. If built on a new or existing deck, provide a footing and floor framing plan of the deck structure. (See deck example)
8. If attached to a second-floor cantilever (bump out) engineering will be required.
9. Plot plan showing location of roofed structure (include dimensions to property lines - see example).

Example Plans

Top Reasons Shed Roof Plans are Rejected

1. No plot plan submitted
2. Plot plan does not show dimension to property lines (all sides).
3. No structural plan submitted
4. Plans not clear and easy to follow
5. Footings undersized
6. Header/beam undersized
7. Ceiling joist and/or Rafters over spanned
8. Plans missing information
   • Dimensions
   • Size/span of header/beam
   • Rafter size, spacing, direction and species of lumber.
   • Ceiling joist size, spacing, direction and species of lumber.

Construction Drawing Requirements

The following information is required on gable roof construction drawings:

1. Size of support post for roof
2. Header size for roof support
3. Spans and point loads for headers
4. Pitch of roof
5. Ridge size
6. Rafter size and direction
7. Spacing and span for rafters
8. If built on a new or existing deck, provide a footing and floor framing plan of the deck structure. (See deck example)
9. If attached to a second-floor cantilever (bump out) engineering will be required.
10. Plot plan showing location of roofed structure (include dimensions to property lines - see example).

Example Plans

Vaulted Ceiling Design Options

Top Reasons Gable Roof Plans are Rejected

1. No plot plan submitted
2. Plot plan does not show dimension to property lines (all sides). See plot plan example
3. No structural plan submitted
4. Plans not clear and easy to follow
5. Footings undersized
6. Header/beam undersized
7. Ceiling joist and/or Rafters over spanned
8. Ridge undersized (need to be sized as a beam)
9. Ceiling joist not installed in the lower 1/3 of roof (engineering required)
10. Structural ridge load path to extend directly to footing.
11. Plans missing information
    • Dimensions
    • Vaulted or flat ceiling
    • Size/span of header/beam
    • Rafter size, spacing, direction and species of lumber.
    • Ceiling joist size, spacing, direction and species of lumber.