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Geotextile Materials Selection

Mesh to Micron Conversion


Geotextile materials are available in a range of fabrics to accommodate applications that require stabilization, aggregate separation, or filtration. When choosing a material, one of the most commonly asked questions is what micron size they are able to contain. To answer these questions, a mesh to micron conversion chart is available below for some of our standard fabrics:

Fabric
US Sieve (AOS)
Micron
50
297
50
297
70
210
70
210
80
177
100
149
100
149
100
149
40
400
40
400

Questions? We can help! Call our team at +1-772-646-0597 or submit a form.


The chart below is designed to serve as a guide for classifying your material with micron/US Sieve rating.

US Sieve
Micron Size
Typical Material
28
700
Beach Sand
60
250
Fine Sand
200
74
Portland Cement
325
44
Silt

Available Geotextiles

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Non Woven Geotextiles

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Woven Geotextiles

Questions? We can help! Call our team at +1-772-646-0597 or submit a form.

Complete Mesh to Micron Chart

Listed on all of our geotextile specification charts is a property called AOS or Apparent Opening Size. The value for the AOS will be listed in US Sieve. Match the US Sieve for your fabric to find the size in inches, millimeters and microns.

U.S. Sieve
INCHES
Microns
MILLIMETERS
3
0.2650
6730
6.730
4
0.1870
4760
4.760
5
0.1570
4000
4.000
6
0.1320
3360
3.360
7
0.1110
2830
2.830
8
0.0937
2380
2.380
10
0.0787
2000
2.000
12
0.0661
1680
1.680
14
0.0555
1410
1.410
16
0.0469
1190
1.190
18
0.0394
1000
1.000
20
0.0331
841
0.841
25
0.0280
707
0.707
30
0.0232
595
0.595
35
0.0197
500
0.500
40
0.0165
400
0.400
45
0.0138
354
0.354
50
0.0117
297
0.297
60
0.0098
250
0.250
70
0.0083
210
0.210
80
0.0070
177
0.177
100
0.0059
149
0.149
120
0.0049
125
0.125
140
0.0041
105
0.105
170
0.0035
88
0.088
200
0.0029
74
0.074
230
0.0024
63
0.063
270
0.0021
53
0.053
325
0.0017
44
0.044
400
0.0015
37
0.037

Geotextile Application Chart

To help select which type of the various geotextile materials are best suited for various applications, the following table has been developed.

Product Type
Application
Nonwoven Fabric
  • Subsurface Drainage and Filtration
  • Erosion Protection
  • Asphalt Overlays
  • Stabilization and Separation
  • Railroads Only Use Heavy Weight Nonwovens
  • Pond Underlayments
Woven Slit Film Fabric
  • Stabilization and Separation
  • Silt Fence
Woven Mono Filament Fabric
  • Subsurface Drainage and Erosion Protection (mainly in gap graded soils)
High Strength Wovens
  • Stabilization and Reinforcement
Grids
  • Stabilization and Reinforcement
Drainage Nets
  • In-Plane Drainage (when combined with light weight nonwovens)
Pre-Fabricated Drainage Structure
  • Subsurface Drainage
Matting
  • Erosion Protection
Combination of Grids and Nonwoven Fabric
  • Special Stabilization and Reinforcements Where Separation is Needed (i.e. under sewer lines or in soils prone to pumping)

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Natural Fiber Products:

As an alternative to synthetic materials, coir geotextiles can also be implemented to help with stabilization in your location. Unlike geotextiles, coir is natural product that will biodegrade throughout the duration of its use. Natural fiber materials can be seen below:

Need help determining which geotextile material will work best for your location? Give us a call at +1-772-646-0597 .

Questions? We can help! Call our team at +1-772-646-0597 or submit a form.