Glossary entry

French term or phrase:

rocaille

English translation:

rockfill

Added to glossary by Ghyslaine LE NAGARD
Nov 25, 2007 08:09
16 yrs ago
4 viewers *
French term

rocaille

French to English Tech/Engineering Environment & Ecology water drainage
Des barrages de correction bas et poreux faits de ///rocaille/// doivent être utilisés dans le canal de drainage longitudinal à la base du terrassement de la route, et dans les tranchées drainantes d'eau claire.

Related to environmental protection measures on an industrial construction site.

Rockery used for gardens and rubble used for natural environment are not appropriate as this is a man made "rocaille" for an industrial site.

Thanks for your help and suggestions.

Discussion

Ghyslaine LE NAGARD (asker) Nov 25, 2007:
Thanks for your suggestion but boulder can either be small or large rocks and it does not describe the construction itself when "rocaille" or rockery for that matter do.

Proposed translations

+9
24 mins
Selected

rockfill

More correctly, "enrochement" in French, however, so if we can assume that your writer deliberately avoided "enrochement", then something else may have to be found.

However, "enrochement" is one of the materials used to build embankment dams, and is also used for river training work.

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Note added at 28 mins (2007-11-25 08:37:33 GMT)
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Possibly "rip rap", though this is used as shore protection or as protection of the face of a dam rather than as a dam itself.

Riprap (also known as rip rap, rubble, revetment, shot rock or rock armour) is rock or other material used to armor shorelines against water erosion. ...
en.wikipedia.org/wiki/Riprap

Rip rap, large sized stone or boulders, is used extensively to control erosion. Controlling erosion is important to the integrity and safety of many ...
www.graymont.com/prod_rip_rap.shtml

A guide to managing coastal erosion in beach/dune systems
Less substantial defences may be formed as rip-rap slopes, but only in low ... Burial of the rip-rap slopes will reduce the visual impact, while fencing, ...
www.snh.org.uk/publications/on-line/heritagemanagement/eros...

Geotextile fabric is usually placed beneath the rock rip-rap to prevent soil loss ... Rip-Rap Shore and Streambank Erosion Brochure. Available from DNR. ...
www.extension.umn.edu/distribution/naturalresources/compone...


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Note added at 15 hrs (2007-11-25 23:31:40 GMT)
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La berme en enrochement, constituée de rocailles bon marché, ne résistait pas aux vagues lorsqu'elle avait une forme classique de brise-lames

The rock berm consisted of low-cost rock materials that would not remain stable in a conventional rubble-mound design
http://chc.nrc-cnrc.gc.ca/Coastal/Projects/CoastalProject_Pa...
http://chc.nrc-cnrc.gc.ca/Coastal/Projects/CoastalProject_Pa...

enrochement – 600-2000 mm
http://gresdepernes.free.fr/pdf/pernes/enrochements.pdf
rocaille – 300-600mm
http://gresdepernes.free.fr/pdf/pernes/rocailles.pdf

Wentworth scale – boulders are >256mm in diameter
British Standard particle size classification – boulders are >200mm
block – An angular rock fragment, similar in size to a boulder, and more than 256mm in diameter. [Penguin Dict. of Phys. Geography]

No luck so far finding dimensions for riprap or rockfill. I've seen some on dam facings around 1 m in dia. if not more.
Peer comment(s):

agree Tony M
3 mins
agree ormiston : much better !
24 mins
agree Carol Gullidge : rubble, or revetement? ("Riprap (also known as rip rap, rubble, revetment")
51 mins
The terms can be similar, but not interchangeable. "Rubble" would be said of rockfill for a "rubble-mound breakwater" for instance, and "revetment" could be hand-placed stone pitching, not dumped rockfill, or could be precast concrete armour units.
agree gerard robin : it is much better in this case
1 hr
agree Drmanu49 : Quite right!
1 hr
agree Victoria Porter-Burns :
2 hrs
agree Claire Cox
3 hrs
agree malligajm : it could also be small / loose stones
4 hrs
It could indeed, but I think "rockfill" probably covers that (unless they are very small stones).
agree Emilie Naudin
6 hrs
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4 KudoZ points awarded for this answer. Comment: "Thanks. "
7 mins

boulders

if not too small !
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27 mins

rockwork

def: stones plus cement
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1 hr
3 hrs

ballast

is what came first to my mind; however, Bourth's rockfill may be more suitable depending on the actual context.

See:

Soil and Rock Construction Materials - Google Books Resultby G. H. McNally - 1998 - Architecture - 403 pages
CHAPTER 12 Rockfill and ballast These are coarsely fragmented and free-draining ... is mainly used in embankment dams and as rubble core in breakwaters, ...
books.google.com/books?isbn=0419214208...
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