UV(ASTM G 154):
The "Achilles Heel" of most plastics is a loss of color and strength properties due to exposure
to the sun's ultra-violet rays. UV testing by ASTM G 154-00 is an accelerated UV test that
mimics this exposure. It is nearly impossible to correlate exposure in the UV lab with service life
in the field. However, Northstar commissioned UV testing by an ISO 9002 certified laboratory to
measure the flexural strength and izod impact retention of Northstar's unique formulation and
manufacturing method of its vinyl sheet pile. No other vinyl sheet pile manufacturer has
quantified the effects of UV to the degree Northstar has.
UV testing machine.
Specifications:
All four profiles available from Northstar Vinyl Sheet Piling are mono extruded from a
weatherable, impact modified PVC having the following mechanical properties:
Series
Series
Series
Series
Properties
Units
8000i
4000i
3100c
2550c
Allowable Moment
ft-lbs/ft
8,224
3,950
3,079
2,470
Allowable Shear
lbs/ft
2,500
1,870
1,580
1,220
Impact Strength (ASTM D4226A)
in-lbs
*2,100
*1,100
670
360
Impact Strength (ASTM D256)
in-lbs
15.00
13.00
9.00
8.00
Width (W)
inches
18.00
12.00
12.00
12.00
Depth of Section
inches
9.80
6.70
6.50
6.40
Webb Thickness (Tw)
inches
0.43
0.31
0.25
0.20
Flange Thickness (Tf)
inches
0.45
0.33
0.25
0.20
Corner Thickness (Crn)
inches
0.70
0.50
0.50
0.42
Rib Diameter (Rib)
inches
0.60
0.60
0.50
0.40
Neutral Axis (n.a.)
inches
4.90
3.35
3.25
3.20
65
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