
09/25/2025
The image is a technical illustration or diagram showing the framing details of a small structure, possibly a shed or small building.
* It is broken down into three figures: a rafter detail, the overall framing, and a siding notch detail.
* It provides dimensions and labels for various components.
Fig. 7: Rafter Detail:
* Rafter: A single rafter is shown, which is a structural member that supports the roof.
* Dimensions: The rafter is labeled as being 50 inches long.
* Angle: The top of the rafter is cut at a 45-degree angle.
* Bird's Mouth Notch: A "bird's mouth" notch is cut into the rafter near its base. This notch allows the rafter to sit securely on the top plate of the wall. Dimensions of this notch are provided (3 1/8", 3 1/8", and 2 1/4").
Fig. 8: Framing (Overall View):
* Structure: The drawing shows a partial frame of a building with a gable roof. Only one side and the roof framing is complete.
* Roof Framing:
* Rafters: The rafters are attached to a ridge board at the peak of the roof.
* Ridge Board: This is the horizontal beam at the top of the roof where the rafters meet.
* Collar Ties: These are horizontal members that connect opposing rafters, providing additional stability.
* Gable Studs: These are vertical studs that support the gable end of the roof. The front and back studs are labeled.
* Spacing: Rafters and back gable studs are shown as being 18 inches on center ("o.c."), meaning the distance from the center of one member to the center of the next is 18 inches. The rafter thickness appears to be 4 3/4".
* Wall Framing:
* Top Plates: The rafters sit on top of the top plates, which are horizontal members at the top of the wall framing.
* Bottom Plates: These are the horizontal members at the bottom of the wall framing.
* Studs: Vertical studs are spaced 18 inches o.c. on the front wall and the section of wall with the blue siding.
* Window Frame: A window frame is incorporated into the wall framing.
* Header: The horizontal member above the window and door openings.
* Sill: The horizontal member at the bottom of the window opening.
* Jambs: Vertical side members and a head jamb (top member) of the window.
* Girts: Horizontal members below the header (header and girts are notched).
* Dimensions: There are dimensions for stud spacing and the distance of the bottom plate from the edge of the siding (21", 24", 21").
* Siding: Part of the wall is covered in blue siding with corner trims (1x2 and 1x3).
Fig. 9: Siding Notch Detail:
* Close-up: This is a close-up showing how the siding is installed to align with the rafter and how the bird's mouth notch of the rafter fits over the top plate and siding.
* Siding Cut: The top edge of the siding is trimmed to align with the angle of the rafter, creating a 90-degree angle between the siding and the rafter.
* Explanation: The diagram shows that the bird's mouth notch allows the rafter to sit properly on the top plate even when siding is present.
Additional Notes:
* The phrase "For clarity, window on opposite wall not shown" indicates the drawing is simplified and only showing one side of the structure.
* The image provides a good overview of basic framing techniques, including roof construction and wall framing.
* The dimensions given are likely intended as examples and may need to be adjusted based on specific project requirements.
In summary, the image is a detailed technical drawing illustrating common framing techniques for a small structure, focusing on rafter details, overall framing components, and siding installation. The inclusion of dimensions and labels makes it a useful reference for construction or woodworking projects.