Asphalt Specialists In Hydraulic Engineering


Coastal Protection

Two Tree Island
West End, Dovercourt
Thameside, Revetments
South Humber Banks


Dam Waterproofing
Dam Erosion Protection
Dam Spillway Protection
Ports & Harbours
Flood Alleviation
River Training
Scour Protection
Underwater Impact Protection
Strengthening Rock Structures
Landfill Linings
Offshore Services

Caister on Sea, Norfolk

 This 1986 Phase 2 contract awarded by Great Yarmouth Borough Council - Hesselberg Hydro's first major project in the UK - followed earlier work by our Dutch counterpart, Bitumarin bv. in 1978.

The existing seawall was beyond its serviceable life, leaving properties at ever greater risk from flooding. Generally, phase 1 works had performed well, so the construction was extended along the beach.

  • 300mm OSA main revetment placed on 150mm LSA filter layer
  • Solid LSA key at toe increased stability of slope
  • Toe protected with either a mastic asphalt slab or grouted stone, or a combination
  • Asphaltic concrete promenade installed on crest
  • Short revetment of OSA on geotextile protected dunes behind from erosion by wave run-up
  • On site mixing of materials

To date the revetment is performing well.


Caister Coast