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- Johnson_bar abstract "A Johnson bar (also Johnson corrugated bar) is a type of corrugated high-carbon steel rebar used to reinforce concrete. The Johnson bar was invented by A.L. Johnson of the St. Louis Expanded Metal Company. Its specific efficacy comes from having "alternate elevations and depressions to grip the concrete," with the shoulders of the corrugations having "an inclination with the axis of the bar" to prevent slipping between the bar and the concrete. The pattern of elevations and depressions aids in the stability of the structure; even if a Johnson bar no longer adheres to the concrete (due to vibrations, for instance, or to accidentally being smeared with oil, reducing the adhesion significantly, as may happen during careless construction), it will have a hold on the concrete as strong as or stronger than a "plain" bar (that is, a simple prismatic bar).".
- Johnson_bar wikiPageID "8772299".
- Johnson_bar wikiPageRevisionID "602916010".
- Johnson_bar hasPhotoCollection Johnson_bar.
- Johnson_bar subject Category:Building_materials.
- Johnson_bar subject Category:Concrete.
- Johnson_bar subject Category:Structural_steel.
- Johnson_bar type Artifact100021939.
- Johnson_bar type BuildingMaterial114786479.
- Johnson_bar type BuildingMaterials.
- Johnson_bar type Object100002684.
- Johnson_bar type PhysicalEntity100001930.
- Johnson_bar type Whole100003553.
- Johnson_bar comment "A Johnson bar (also Johnson corrugated bar) is a type of corrugated high-carbon steel rebar used to reinforce concrete. The Johnson bar was invented by A.L. Johnson of the St. Louis Expanded Metal Company. Its specific efficacy comes from having "alternate elevations and depressions to grip the concrete," with the shoulders of the corrugations having "an inclination with the axis of the bar" to prevent slipping between the bar and the concrete.".
- Johnson_bar label "Johnson bar".
- Johnson_bar sameAs m.0fqpz7c.
- Johnson_bar sameAs Q17092893.
- Johnson_bar sameAs Q17092893.
- Johnson_bar sameAs Johnson_bar.
- Johnson_bar wasDerivedFrom Johnson_bar?oldid=602916010.
- Johnson_bar isPrimaryTopicOf Johnson_bar.