Unload the defensive barrier and place one unit in the desired location
EnZar®
Defensive Barriers Assembly Guidance
Defensive barrier is a modular defensive barrier system that is made up of collapsible wire mesh baskets that are filled with sand or other materials. Baskets can be easily transported and assembled on site to create a barrier that can withstand blasts, projectiles, and other threats. The defensive barrier has been used in a wide range of applications, from military fortifications to flood protection walls.
Here we will introduce how to assemble defensive barriers to help with efficient and easy assembly. And we will list some introductions on corner and curve arrangement and how to fill in.
Defensive Barrier Assembly
Step 1
![Two workers are placing one unit of defensive barrier.]()
Step 2
![Two workers are stretching one unit of defensive barrier.]()
Pull up and stretch. It is very easy to do this because the integrate structure.
Step 3
![Two workers are pulling out one unit of defensive barrier.]()
Pull out and check the position of defensive barrier.
Step 4
![A worker is butting together the neighbour defensive barriers.]()
Joining – Butt Together
Join defensive barrier unit into desired length.
Butt together the units to be joined, overlap them and interlock the coil on each butted corner.
Step 5
![A worker is placing the joining pins into overlapped coils.]()
Joining – Place Joining Pins
Insert the joining pin through the overlapped coils, ensuring that it connects the coils fully and that it is fully Inserted. The joining pins are supplied with defensive barriers.
Step 6
![A worker is tucking the geotextile flaps defensive barriers in.]()
Tuck in Flaps at Base
All geotextile flaps at the base of the unit should be tacked in before filling for maximum stability and durability.
Notes
- All units should be horizontally aligned before joining.
- Only when all the cells are joined can we start to fill.
Step 7
![A worker is filling the material into cells and a worker is pulling out center coils.]()
Fill the Cell
Fill containers with materials by excavators and pull out panel centers around 100 mm (4") after filling.
Step 8
![A worker is compacting the material in the cells of defensive barrier]()
Compact the Material
Spread and compact the material every 300 mm (1 foot) of filling.
Step 9
![The materials in the defensive barrier cells and has a 10 cm distance to the top.]()
100 mm from the Top
If you need the upper units, just fill the bottom unit to maximum 100 mm (4") from the top.
Step 10: Place and Fasten Upper Unit
Place the upper units and fasten them with provided hog rings.
Step 10-1
![Two layers of defensive barriers are aligned vertically.]()
Place the upper units and pull them out until all the cells are aligned vertically. Line up the upper cells with the lower ones.
Step 10-2
![A worker is cutting the geotextile with knife.]()
Locate the top welded mesh strut under the stapled geotextile of the lower cell. Cut a small, horizontal hole under it and a vertical hole up through the geotextile.
Step 10-3
![A worker is fasten the two layers of cells with hog rings.]()
Insert the welded mesh of the upper unit into the lower unit. Attach and rotate a hog ring enclosing the top strut of the lower cell and the bottom strut of the upper cell.
Step 10-4
![The bottom geotextile of upper layer is tucked in the lower cells.]()
Fold all geotextile from the upper unit into the lower section prior to filling.
Step 10-5
![The hog rings distance is between 150 mm to 200 mm.]()
Hog rings are suggested to be fitted every 150–200 mm (6" to 8")
Corners & Curves Arrangement
There are various methods of making corners and curves with Concertainer units.
Method 1
![A drawing shows the right and wrong operation method of pulling out coils.]()
For Curved Walls
Pull out the center coils on each cell until you reach the desired curve.
Note: Only pull the center coil outward when creating a curved wall section to guarantee the minimum protective thickness.
Method 2
![A drawing shows how to create a 45 degree corner of defensive barrier.]()
For 45 Degree Corner
Fold into a complete side panel and secure by overlapping the coils and inserting a joining pin.
Note: this method is only applicable to units with a split side panel.
Method 3
![A drawing shows how to create a 90 degree corner of defensive barrier.]()
For 90 Degree Corner
Join two units of defensive barriers at a 90 degree by connecting the coils and inserting the joining pins.
Filling Arrangement
A proper filling sequence is equally vital, especially for longer walls. Follow the steps below for correct filling and maximum stability. All steps are based on loading equipment straddling two cells at a time.
Step 1
![A drawing shows the right direction of filling materials.]()
Check for correct positioning, alignment, and level before proceeding with filling.
Step 2
![Fill the beginning end cells and pull out the center coil.]()
Start filling from the beginning end cells of defensive barriers and pull out the center coils.
Step 3
![Fill maximum 150 mm height at the initial filling.]()
Do not exceed 150 mm (6 inches) of material during the initial filling phase and manually compacted by feet.
Step 4
![Fill the final end cells and pull out the center coil.]()
Fill the final end cells on balance and pull out the center coils.
Step 5
![Fill the center cells and pull out the center coil.]()
Fill the center cells for maximum stability and pull out the center coils.
Step 6
![Fill the other cells and pull out the center coil.]()
Fill the remaining cells and pull out the center coils of each cell.
Step 7
![A excavator is filling material in the cells from the second cells and a worker is compacting materials.]()
Subsequent layers of fill along the diaphragm shows and then continue along the full length of the wall and the filling height should be no greater than 300 mm. All fill must be spread inside each cell and then manually compacted by feet.
Step 8
![A excavator is filling material in the cells.]()
Filling should recommence from the beginning end cells and fill every 300 mm intervals. And no cell should ever contain more than 300 mm (12") of material than its neighbour. Failure to comply will result in deformation of defensive barriers.
Filling Height
The filling height varies according to the structure.
Stand-Alone Walls
The stand-alone wall will not be subjected to a subsequent load. Units should be filled to the top and are need not be compacted.
Higher Walls – Straight Type
Units should be filled to approximately 100 mm (4") of the top of the unit to ensure that the geotextile flap at the base of the unit forms a seal. And the top of the walls should be filled to the top.
Higher Walls – Pyramid Type
Each layer of units should be filled to the top. And there is very little vertical joining required on a structure of this type.