Table 39. Minimum geotextile filter physical property requirements. 



Property 



CATEGORY 



Test method 



A 



Severe 



Dynamic 



Loading 



B 



Dynamic 

 & Static 

 Loadings 



C 



Stringent 

 Placement 

 5 Drainage 



Tensile Strength^-SPD 1 

 BPD 2 

 WPD 3 



Elongation at Failure 



Seam Strength 4 



Puncture Resistance 



Burst Strength 



Abrasion Resistance 4 - 



SPD 

 BPD 

 WPD 



App. C-l 



App. C-l 

 App. C-2 

 App. C-3 

 App. C-4 



App. C-5 



1.56 kN 

 0.98 kN 



<36% 

 0.87 kN 

 0.53 kN 

 3450 kPa 



0.44 kN 

 0.29 kN 



0.89 kN 



36% 

 0.80 kN 

 0.53 kN 

 3790 kPa 



0.29 kN 



0.89 kN 

 0.44 kN 



36% 



0.36 kN 



0.29 kN 



1650 kPa 



0.27 kN 

 0.15 kN 



OPTIONAL REQUIREMENTS 



Freeze-Thaw Resistance 



High Temperature 

 Survivability 



Low Temperature 

 Survivability 



Effects of Acids 



Effects of Alkalies 



Effects of JP-4 Fuel 



App. C-6 



App. C-7 



App. C-8 

 App. C-9 

 App. C-10 

 App. C-ll 



90% of required strength 



80% of required strength 



. 85% of required strength 

 90% of required strength 

 90% of required strength • 

 85% of required strength 



*SPD = Stronger Principal Direction 

 2 BPD = Both Principal Directions 

 3 WPD = Weaker Principal Direction 

 h In accordance with the specifications 

 ties, these forces are applied over a 



for the tests for these prepe?= 

 width of 25.4 millimeteri (1 ineh). 



293 



