Drainage Core
Property
Test Method
Value
Thickness, inches
ASTM D-1777
1.0
Flow Rate, gpm/ft *
ASTM D-4716
29
Compressive Strength, psf
(sand method)
ASTM D-1621
6000
Perforations / sq. ft.
—–
> 300
Property
Test Method
Value
Weight (oz/sq2)
ASTM D-3776
4
Tensile Strength, lb.
ASTM D-4632
100
Elongation, %
ASTM D-4632
50
Puncture, lb.
ASTM D-4833
50
Mullen Burst, psi
ASTM D-3786
200
Trapezoidal Tear, lb.
ASTM D-4533
42
Coefficient of Perm, cm/sec
ASTM D-4491
0.1
Flow Rate, gpm/ft2
ASTM D-4491
100
Permittivity, 1/sec.
ASTM D-4491
1.8
A.O.S. Max US Std Sieve
ASTM D-4751
70
UV Stability,500 hrs., %
ASTM D-4355
70
Seam Strength, lb./ft
ASTM D-4595
100
Fungus
ASTM G-21
No Growth
All values given represent minimum average roll values
* Horizontal Installation, gradient = 0.1, pressure = 10 psi for 100 hours