EnviroSlope Geogrid Wrap

1. Product Description
EnviroSlopeTM Geogrid Wrap is an economical system to create attractive vegetated reinforced soil slopes and is recommended for slopes up to 45 degrees. Subject to site specific design, the recommended facing material for this option is UV resistant biaxial geogrid EGRID 2020 backed by an turf reinforcement mat (Layfield TRM P-12).  The zone next to the inside front face of the slope is filled with seeded topsoil during construction for vegetation growth. Uniaxial geogrid is installed during backfill as per design to support the slope at the specified angle.  Reinforced slope structures are usually constructed in areas to save space. Typically the structure delivers advantages in right of way and reduced space that could not be achieved with the slope of an unreinforced embankment. Applications include highway embankment construction, landslide repair, commercial and industrial applications, decreased bridge spans, embankment construction with fine grained soils, reduced embankment footprint in sensitive areas (e.g. parks), arch culvert end treatments, and residential steepened slope structures.

2. Technical Data
Materials information is on page 2.

3. Installation
The installation starts with completion of any required excavation, levelling and compaction of base and installation of drainage materials. The primary geogrid is laid at the elevation and orientation as shown on the construction drawings. Correct orientation (strength direction) of the geogrid is of utmost importance. The facing materials are usually biaxial geogrid and turf reinforcement mat.  These materials are laid out and the backfill is placed and compacted. The facing materials are then folded back over the backfill and a temporary form system is installed to maintain alignment. Construction continues by alternately placing each level of facing - primary geogrid and facing material to the lines and grades as shown on the project drawings and backfill each level with material as specified. Refer to and follow complete project specific requirements in the plans, specifications and tender documents.

EnviroSlope Geogrid Wrap Railway Trestle Rebuild - Ontario Canada 4. Availability and Cost
Available from Layfield or distributors. Call
425-254-1075 Pacific time 
780-453-6731 Mountain time, or 
905-761-9123 Eastern time

5. Manufactured For
Layfield Environmental Systems Corp.
Layfield Geosynthetics & Ind. Fabrics Ltd.

6. Warranty
Products sold will meet Layfield's published specifications at time of sale. Full warranty details are available from Layfield.

7. Maintenance
MSE wall and slope systems should be inspected annually. Inspect the facing units for alignment or other defects. Look for signs of settlement, cracking, or erosion. Maintain vegetation or concrete facing with regular maintenance.

8. Filing Systems
www.LayfieldGroup.com
www.geomembranes.com

 
9. E'Grid Biaxial Geogrid - Metric
12 December 2012 E'Grid Biaxial PP Geogrids - Metric Values


E'GRID1 2020 E'GRID1 3030 E'GRID1 4040
Aperture Size (mm) Typical
40 x 40 40 x 40 37 x 37
Wide Width Tensile
(kN/m) MD/CD
ISO 10319 20
---
20
30
---
30
40
---
40 
Strength @ 2% Strain
(kN/m) MD/CD
ISO 10319 7.6
---
7.6
11
---
11
14.5
---
15 
Strength @ 5% Strain
(kN/m) MD/CD
ISO 10319 15.3
---
15.3
21.6
---
21.6
28.0
---
29.0
Junction Efficiency (%) GRI GG2 > 95  > 95 > 95
Flexural Rigidity (mg-cm) ASTM D 1388 800,000 3,000,000 4,300,000
Torsional Stiffness (kg-cm/degree) US Army COE 3.3 5.8 7.3
Roll Size (m)   3.9 x 100 3.9 x 75 3.9 x 50
Roll Weight (kg) Typical
78 88 84

Note1 - Carbon black minimum content is 2% for high UV Resistance



10. T Series Uniaxial Geogrid - Metric
4 Jan 2013

T Series Uniaxial Geogrids (PET) -Metric Values



2XT2
3XT3
5XT3
7XT
8XT3
10XT
20XT 
 22XT
 24XT
Wide Width Tensile (kN/m) MD ASTM
D6637
Ultimate

29.2

51.1 

68.6 

86.1 

108.0 

139.0 

 200

300

 400

Creep Reduced Strength(kN/m) ASTM
D5262

18.5

32.3

43.4

54.5

68.3

88.0

127.0

190.0

253.0

LTDS (kN/m)1

GRI GG4 (b)

Sand, Silt and Clay1

16.0

28.0

37.6 

47.2 

59.2

76.0 

 110.0

 164.0

 219.0

Roll Width (m)

3.6

3.6

3.6

3.6

3.6

3.6

 3.6

  3.6

3.6 

Roll Length (m)

46

46

46

61

61

61

 61

  61

61

Roll Weight Typical (kg)

46

54

59

85

97

120

175

226

284

Note1: Refer to manufacturers Long Term Design Strength (LTDS) Reduction factors listed on Layfield website.
Note2: Values shown for 2XT are both machine and cross-machine direction. Values for other products are machine direction only.
Note3: Also Available in 1.8m (6ft) wide by 45.7m (150ft) long rolls.

 
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