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English | BesTec® | Rock Log (STW)

Loading and transport of filled RockLogs

Utility

BesTec™ RockLogs (type STW) are rock based construction elements used for various bank stabilization techniques along lake shores, on streams and in salt marshes where engineered safety has to be combined with ecological function and aesthetics. They are flexible (i.e. forgiving of grading mistakes), yet strong and easy to use. Their modular design aids in cost effective shipping and installation. Where time is of the essence, BesTec™ RockLogs cut construction time significantly. BesTec™ RockLogs are manufactured from frost safe, non-corroding materials. BesTec™ RockLogs are typically used in strong currents, high energy sites, on steep slopes as erosion control material and revegetation units for difficult sites where energy conditions require an instant solution of strength and stability and simultaneous reestablishment of vegetation.

Quality

BesTec™ RockLogs have been inspected prior to delivery and individually tested with the test certificate according EN-standard assuring our customers that stringent material and quality requirements have been met.

BesLift™ lifting equipment (upon request)

The filling

BesTec™ RockLogs are made of approx. 2-6'' inches/50-150 mm sized stone and an additional filler substance, filled into our special PP netting. We offer BesTec™ Vegetated RockLogs too. This type is produced with a membrane inside and special substrate for installation in temporary or artificial aquatic situations. For more details see our product information BesTec™ Vegetated RockLogs (V/RSTW).
For large projects BesTec™ RockLogs can be produced at the project site with Beslift ™ Equipment.

The netting

The stone is encased by an environmentally inert PP netting. PP is resistant to damage by light, frost, and chemicals. Our special netting has been woven in one piece. With this special netting the weak points are reduced to a minimum . Our netting is strong enough to allow BesTec™ RockLogs to be handled by simple hooks attached to power equipment.
The membrane The membranes for the stake type of Plantable RockLogs (type RSTW) keeps the filling from getting out of the BesTec™ RockLogs. The membrane is made out of a strong coconut webbing or a synthetic geotextile.

BesTec™ RockLog production facilities, also for production close to place of installation as mobile production equipment available

Installation

As indicated in the margins various BesTec™ RockLogs applications may require different installation procedures. BesTec™ RockLogs are typically installed with a spreader bar and pinned into place with iron stakes. Stakes should be at least 1m / 36´´ long and be spaced no further then approx. 70-80cm / 24´´ apart. Earth anchors may also be used. BesTec™ RockLogs may be placed without additional support, relying on their significant weight for stability. Place BesTec™ RockLogs on filters as needed, fit tightly together and manually tie adjacent ends together. Provide good continuous ground contact throughout.

Multiple layers of BesTec™ RockLogs, or combinations of them with other Bestmann Green Products should be strung together tightly with synthetic twine.

Plantable RockLogs, special execution filled with stones and lava

The plants

Depends by the water level the standard RockLogs (type STW) ore more dry condition the Vegetated RockLogs (V/RSTW) both executions are plantable with Armaflor™ small plugs type MP5.

Typical uses

BesTec™ RockLogs are used in very steep embankments with little or no room for normal plant development and where engineered safety has to be combined with ecological function and aesthetics.
BesTec™ RockLogs are ideally suited for canals and areas of infrequent ship traffic where Armaflor™ Fibre Rolls do not have sufficient lasting power.
Under dense canopy on stream banks where limited plant selection and poor light conditions combine.
In brackish, alkaline or acidic bodies of water where plant selection is limited and growth rates may be reduced.

 

BesTec™ RockLog standard execution: 1 meter long (3 ft), diameter 40 cm (16´´)
Installation of 5 layers of RockLogs in standard execution also with additional filling of lava stones for planting with Armaflor™ small plugs later on
BesTec™ RockLogs in special execution: filled with loam/clay to influence the pH-value of a pond