Spec InterpretationConnecticut
State of Connecticut
Department of Transportation Specifications
December, 2011
CONNDOT
The State of Connecticut standards for geotextiles are extremely antiquated. They reference AASHTO M288 in the QPL. It states: “The categories listed are in accordance with the AASHTO M 288 specification,” but the Qualified Products List appears to follow the 1992 version of AASHTO. This version is no longer in effect. The list shows woven slit-film separation geotextiles as permitted for subsurface drainage. US Fabrics does not recommend woven slit-films for this application nor does the current version of AASHTO. The Qualified Products List also includes numerous companies no longer in existence and products no longer being manufactured. On March 2006 US Fabrics submitted their full-line for evaluation and inclusion on the Qualified Products List. Approval is STILL pending.
As such, we are recommending our products based on the CURRENT addition of AASHTO M288. Please contact US Fabrics directly if you require a product approved for use by CONNDOT.
800-518-2290.
| SPECIFICATION | APPLICATION | NON WOVEN | WOVEN | COMPOSITE | GRID |
|---|---|---|---|---|---|
| AASHTO M288 | Subsurface Drainage - Class 1 <15% Fines | US 205NW | US 230 | -- | -- |
| AASHTO M288 | Subsurface Drainage - Class 1 15% to 50% Fines | US 205NW | -- | -- | -- |
| AASHTO M288 | Subsurface Drainage - Class 1 >15% Fines | US 205NW | -- | -- | -- |
| AASHTO M288 | Subsurface Drainage - Class 2 <15% Fines | US 160NW | US 230 | -- | -- |
| AASHTO M288 | Subsurface Drainage - Class 1 15% to 50% Fines | US 160NW | US 670 | -- | -- |
| AASHTO M288 | Subsurface Drainage - Class 1 >15% Fines | US 160NW | US 670 | -- | -- |
| AASHTO M288 | Stabilization - Class 1 | US 205NW | US 315 | -- | -- |
| AASHTO M288 | Stabilization - Class 2 | US 160NW | US 250 | -- | -- |
| AASHTO M288 | Stabilization - Class 3 | US 120NW | US 200 | -- | -- |
| AASHTO M288 | Separation - Class 1 | US 205NW | US 315 | -- | -- |
| AASHTO M288 | Separation - Class 2 | US 160NW | US 250 | -- | -- |
| AASHTO M288 | Separation - Class 3 | US 120NW | US 200 | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 1 <15% Fines | US 205NW | US 230 | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 1 15% to 50% Fines | US 205NW | -- | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 1 >15% Fines | US 205NW | -- | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 2 <15% Fines | US 160NW | US 230 | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 2 15% to 50% Fines | US 160NW | US 670 | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 2 >15% Fines | US 160NW | US 670 | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 3 <15% Fines | US 120NW | US 230 | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 3 15% to 50% Fines | US 120NW | US 670 | -- | -- |
| AASHTO M288 | Permanent Erosion Control - Class 3 >15% Fines | US 120NW | US 670 | -- | -- |
| AASHTO M288 | Paving Fabric | US 100P | -- | -- | -- |