What is AASHTO M288?

AASHTO M288-06 is published within its two-volume “Standard Specifications for Transportation Materials and Methods of Sampling and Testing”. M288-06 covers six geotextile applications: Subsurface Drainage, Separation, Stabilization, Permanent Erosion Control, Sediment Control and Paving Fabrics.

Which one is the title of AASHTO m 288?

AASHTO M288-21 “Table 1 Geotextile Strength Property Requirements” covers the required strength properties for six standard geotextile applications: Subsurface Drainage, Separation, Stabilization, Permanent Erosion Control, Sediment Control and Enhancement.

What is Class C geotextile?

3. A Class “C” geotextile or better (see Section 24.0, Material Specifications, 1994 Standards and Specifications for Soil Erosion and Sediment Control, MDE, 1994) shall interface between the trench side walls and between the stone reservoir and gravel filter layers.

What is permittivity geotextile?

The Permittivity of a geotextile is the volumetric flow of water per unit area through a geotextile normal to the plane. To help us understand it we can think of Permeability as the speed of the water and Permittivity as the volume of water through a geotextile.

What is transmissivity in geotextile?

Transmissivity is the flow of water within the plane of a geosynthetic. It is used for drainage applications where the water flows within, not just through the geotextile or Geocomposite.

What is the difference between permittivity and permeability?

Differences between the permittivity and permeability. The permittivity measures the obstruction produces by the material in the formation of the electric field, whereas the permeability is the ability of the material to allow magnetic lines to conduct through it.

What weight geotextile French drain?

3-4.5oz
For a french drain application, 3-4.5oz fabric is most commonly used. These weighted fabrics provide a nice mix of durability and high water water flow rates.