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Coir block system |
Unique connection |
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Two connected blocks |
Create uniform
soil lifts |
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| BioD-BlockTM coir fiber block system consisting of a densely-packed,
10 ft long, elongated mattress coir fiber block attached to a woven coir fabric. Coir
fabric is tightly wrapped around the10-ft
long coir block and connected to the block on three sides leaving the
other side open to fill with dirt. Each block has a male and female end.
There male and female ends in
BioD-BlockTM coir block system create a strong and easy- to-handle connection,
providing an excellent face to soil layers. During construction, the male end
of extending BioD-BlockTM should be inserted into the female end
of an already installed BioD-BlockTM. Then overlapping bottom
fabrics should be anchored. |
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Specifications |
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Product |
Height |
Thickness |
Weight |
Top fabric length
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Bottom fabric length |
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BioD-Block 16 |
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BioD-Block 16-200 |
16 in |
9 in |
6.6 lbs/ft (9.9 Kg/m) |
16 in (40 cm) |
28 in (71 cm) |
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BioD-Block 16 - 300 |
16 in |
9 in |
7.2 lbs/ft (10.7 Kg/m) |
28 in (71 cm) |
56 in (142 cm) |
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BioD-Block 16 - 400 |
16 in |
9 in |
7.7 lbs/ft (11.5 Kg/m) |
48 in (122 cm) |
75 in (190 cm) |
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Size of coir block: 10 ft x 16 ft x 9
ft (305 cm x 40 cm x 23 cm). |
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BioD-Block 12 |
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BioD-Block 12 - 300 |
12 in |
5 in |
4.2
lbs/ft (6.3 kg.m) |
47 in
(117.5cm) |
47 in (117.5cm) |
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Size of coir block: 10 ft x 12
in x
5 in (305 cm x 30 cm x 13 cm).
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Fabric length at female end is 6 in (15cm). |
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Dry strength of the attached woven coir fabric
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MD:
1740 lbs/ft (25.4 kN/m)
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CD: 1176 lbs/ft (17.2 kN/m)
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Advantages
- The coir block in the system provides constant
layer heights and makes construction of fabric wrapped soil layers easier.
- Provides much longer protection to soil wraps
from the thick coir fiber block than making the soil wraps with fabrics
only.
- The male-female end in coir block system
provide strong continuous sections, while maintaining its structural
integrity.
- Provides better support to soil behind the
rectangular block. More contact area at the bottom.
- In most situations, no inner fabric is
required when soil wraps are done with coir block system. Reduces cost.
- Reduces valuable installation time, reduces
overall project cost, and provides superior and worry free designs.
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RoLanka's coir block system
eliminates the problems associated with fabric encapsulated soil lift
technique. |
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Soil lift with fabrics only |
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Soil lift with coir block
system |
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Provide constant layer heights |
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Failed fabric wrapped soil lifts |
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Photos from Alaska DOT FHWA-AK-RD-03-03 Report |
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Failed soil lift with geogrids |
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Failed soil lift with coir fabrics |
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Inner fabric used inside the geogrid has
deteriorated and soil has been transported out of the lift. |
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Inner fabric used with the woven coir fabric has
deteriorated and soil has been transported out of the lift. |
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