Eating-size drum are moving into tidal creeks and into some of the sea-walled canals where they gobble shrimp and fiddler crabs on the same oyster beds and rip-rap
edges as mangrove snapper and sheepshead.
Clear-cut riverbanks grow rip-rap
instead of trees and shrubs.
More stable grouted rip-rap
or concrete lining would be used near bridges.
Scope of work will also include construction of cofferdams, de-watering, re-watering upon completion of the new culvert structures, removal of the cofferdams, and installation of new rip-rap
at the culvert locations.
Port Tampa Bay (PTB) is soliciting sealed bids from qualified contractors interested in the installation of approximately 1,350 linear feet of backfill soil material and rubble rip-rap
for restoring and protecting the Spoil Island 2D levee slope.
Most are taken in canals where they tend to feed along the base of piled boulder rip-rap
, or under the highway bridges where they meander among the pilings grubbing out crabs and other crustaceans.
The town is under a consent order from the Department of Conservation and Recreation to rebuild the spillway, replace a rusted shut low-level drain valve, remove vegetation from the dam and stabilize the downstream slope with rip-rap
There is a great demand of coco geonets because the contractors will use it as more sustainable alternative to concrete and rip-rap
, and for slope protection and erosion control, Borinaga said.
All materials used on the islands - drainage stone, seawall rip-rap
, road gravel, winter sand and salt, waste-water drainage sand, topsoil, and landscaping material need to be imported from the mainland.
This excludes any materials placed there for bank reinforcement, such as rip-rap
The mitigation summary originally consisted of compaction and fluid grouting of the damaged areas and placement of stone rip-rap
along the shoreline.
Because it was winter storm season and the pipe was in a canyon section of the Arroyo Conejo Creek, repair crews reinforced it with a commonly used engineering technique, called rock rip-rap
, an artificial pile of rock.