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| {{about|2D layout of a 3D object|painting composition|Rabatment of the rectangle}} | {{about|2D layout of a 3D object|painting composition|Rabatment of the rectangle}} | ||
| ] produced by successive rabattements of its ] onto a single plane]] | ] produced by successive rabattements of its ] onto a single plane]]'''Rabattement''' (also '''rabatment ''') is a rotation of a planar object around a '''folding line''' in order to align the object with another plane.<ref>{{Cite Collins Dictionary|rabatment}}</ref>{{sfn|Calvo-López|2020|p=675}} Rabattement is used in ] to produce ] (patterns, templates). Term comes from {{langx|fr|rabbatement}} (an act of lowering), due to the typical alignment plane being the horizontal one{{sfn|Calvo-López|2020|p=31}} ("rabatment in the plan"{{sfn|Calvo-López|2020|p=449}}, sometimes, a vertical plane is used, "in elevation"{{sfn|Calvo-López|2020|p=367}}). | ||
| '''Rabattement''' (also '''rabatment ''') is a rotation of a planar object around a '''folding line''' in order to align the object with another plane.<ref>{{Cite Collins Dictionary|rabatment}}</ref>{{sfn|Calvo-López|2020|p=675}} Rabattement is used in ] to produce ] (patterns, templates). Term comes from {{langx|fr|rabbatement}} (an act of lowering), due to the typical alignment plane being the horizontal one{{sfn|Calvo-López|2020|p=31}} ("rabatment in the plan"{{sfn|Calvo-López|2020|p=449}}, sometimes, a vertical plane is used, "in elevation"{{sfn|Calvo-López|2020|p=367}}). | |||
| ]. B and D are the faces of the wall (]), also used as folding lines. A and C are ] of the arch faces on both sides of the wall]] | |||
| Rabattement was extensively used by ] in the construction drawings, and, together with ], evolved into the method of the descriptive geometry. Descriptive geometry works sometimes use the term "rotation" when discussing moving points and lines, reserving ''rabattement'' for shapes and planes, both operations are identical.{{sfn|Calvo-López|2020|p=636}} | Rabattement was extensively used by ] in the construction drawings, and, together with ], evolved into the method of the descriptive geometry. Descriptive geometry works sometimes use the term "rotation" when discussing moving points and lines, reserving ''rabattement'' for shapes and planes, both operations are identical.{{sfn|Calvo-López|2020|p=636}} | ||
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Rabattement (also rabatment ) is a rotation of a planar object around a folding line in order to align the object with another plane. Rabattement is used in technical drawings to produce developments (patterns, templates). Term comes from French: rabbatement (an act of lowering), due to the typical alignment plane being the horizontal one ("rabatment in the plan", sometimes, a vertical plane is used, "in elevation").
Rabattement was extensively used by stonemasons in the construction drawings, and, together with projection plane, evolved into the method of the descriptive geometry. Descriptive geometry works sometimes use the term "rotation" when discussing moving points and lines, reserving rabattement for shapes and planes, both operations are identical.
The goal of the rabattement operation is to represent the true shape and size of a face of an object (this is often impossible to do with orthographic projection).
References
- "rabatment". CollinsDictionary.com. HarperCollins.
- ^ Calvo-López 2020, p. 675.
- Calvo-López 2020, p. 31.
- Calvo-López 2020, p. 449.
- Calvo-López 2020, p. 367.
- Calvo-López 2020, p. 636.
Sources
- Calvo-López, José (2020). "Problems". Stereotomy. Vol. 4. Cham: Springer International Publishing. pp. 573–642. doi:10.1007/978-3-030-43218-8_12. ISBN 978-3-030-43217-1.
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