JACK RAFTER Meaning and
Definition
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A jack rafter is a term commonly used in construction and carpentry, referring to a type of rafter that runs at an angle between a hip rafter and a standard rafter. It is typically employed in roofing systems to support the intermediate span between these two main rafters.
Specifically, a jack rafter sits perpendicular to the wall plate or sill plate, extending diagonally in a sloping manner to meet the hip rafter. Its purpose is to distribute the load and weight of the roof evenly across the structure, preventing any undue stress concentration on the main rafters.
The name "jack" likely originates from the usage of this type of rafter to raise or support other structural elements. Additionally, the term can be traced back to the French word "jacque," meaning "male servant" or "supporter."
Jack rafters are cut and shaped with skilful precision to fit precisely between the wall plate and hip rafters, ensuring a secure and stable framework for the roof structure. These rafters are commonly used in hipped or gabled roofs, where their triangular shape adds both strength and aesthetic appeal to the overall construction.
Overall, jack rafters provide essential structural support, connecting the main rafters in a roof system, and are crucial in maintaining the integrity and stability of the roofing framework.
Common Misspellings for JACK RAFTER
- hack rafter
- nack rafter
- mack rafter
- kack rafter
- iack rafter
- uack rafter
- jzck rafter
- jsck rafter
- jwck rafter
- jqck rafter
- jaxk rafter
- javk rafter
- jafk rafter
- jadk rafter
- jacj rafter
- jacm rafter
- jacl rafter
- jaco rafter
- jaci rafter
- jack eafter
Etymology of JACK RAFTER
The word "jack rafter" is a compound term derived from the Middle English word "jakke", meaning a small or common man, and "rafter", which refers to a structural component in a roof. "Jack" is often used to denote something small or inferior, while "rafter" refers to a beam that supports the roof. Thus, a "jack rafter" is a smaller or secondary rafter that supports the structure of a roof alongside the main rafters. The term originated in the context of carpentry and has been used since at least the 15th century.
