Rough
Rough contact surfaces can range from an Ra[1] between 0.1mm and 5mm, producing a stereotomic efficiency relative to the project’s intrinsic characteristics. A small Ra value usually produces a desirable friction in every situation, while a large Ra value might be worthy in the case of a good fit between voussoirs (male female connection), or it might turn out to be undesirable if it reduces the contact surface to a small number of surface peaks. Surface roughness is either directly produced by the fabrication method, or produced by an after process such as sand blasting.
[1] The arithmetic average height parameter is a roughness parameter for general quality control. It is defined as the average absolute deviation of the roughness irregularities from the mean line over one sampling length. (Gadelmawla et al., 2002) )
Works featuring this facet:
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Puzzle Joints
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ACORN
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Armadillo Vault
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Ponte Truchet
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Pre: Vault
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Diamond Wire Stone Cutting
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Brickolage
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Bóveda del Milenio
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Cork vault Pavillion (Amorim)
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Utzon Forty
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CorkCrete Arch
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Merida Cathedral in Yucatán
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Ermita del Santo Cristo (Talaván)
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King’s College Chapel
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Iglesia de Santiago de Orihuela
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Pfarrkirche Königswiesen
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Phare de Cordouan
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Iglesia De Sta. Mª Del Salvador-Chinchilla De Montearagon
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Hôtel de ville d’Arles
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Mausoleum of Theodoric
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Smeaton’s Tower
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Chartreuse de Valbonne
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Vis de Saint Gilles
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Fastnet Rock
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Mihrab Aleppo
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Royal Chapel of Convento de Santo Domingo
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Henry VII Lady Chapel
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Peterborough Cathedral – Lady Chapel
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Capilla de Junterones
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Jumilla
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Chateau d’Anet Chapel Dome
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Chateau d’Anet Trompe
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La Voûte de LeFevre
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Tomb of Ummidia Quadratilla
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Facets:
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