Instead, a "rubble mound" groyne composed entirely of armour stone is used without
conventional foundation layers. Such groynes have been built from 1986 to 2010.
Bournemouth encountered problems in 2009/10 when:
the contractor concluded that the conventional design was impossible to build
the consultant declined to approve the contractor's alternative design.
In the event Bournemouth Borough Council accepted responsibility for the alternative
design which was successfully completed.
Anecdotal evidence suggests that all these non-standard groynes are performing satisfactorily.
surveyed the existing groynes to determine if settlement or dispersal of rock is
investigated whether the approach taken in the Bays is appropriate for future rock
This topic is especially relevant to Bournemouth where the Timber Groyne Renewal
Programme (TGRP) will require the removal of 51 life expired timber groynes between
2013 and 2029, and it is anticipated that the new structures will be rock groynes.
£2,000 (2011/2012) and £2,000 (2012/2013)
Non-standard Rock Groynes project
Minor Funds Contribution 2011-2013
Poole, Bournemouth, Christchurch and New Forest Councils have all built rock groynes
which do not conform to the Rock Manual Guidelines.
The small tidal range and short duration of Low Water precludes: