Multi-Flow Technical Properties

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

Geo-Textile Filter

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