Turbidity Barriers Spec Type 2.DOT

June 2008
 
Style
ASTM
Layfield Type 2.DOT
Layfield Type 2.DOT (HD)
Water Current Limitations
Layfield Type 2.DOT Turbidity barrier are for use in waters with current up to a max. of five feet per second, in deeper lakes, streams, inter-coastal and tidal areas
Floatation Buoyancy
 
19 lbs/ft
29 lbs/ft
Floatation Size
 
8” x 8” x 4’
12” x 12” x 4’
Fabric Curtain Body
 
18 oz/yd2 Yellow Vinyl coated on a 6 oz/yd2 polyester scrim
22 oz/yd2 Yellow Vinyl coated on a 6 oz/yd2 polyester scrim
Grab Tensile
D-5043
397 x 373 lbs.
500 x 400 lbs.
Tongue Tear
D-2261
96 x 86 lbs.
132 143 lbs.
Adhesion
D-751-95 Section 43.1.2
15 lbs.
25 lbs.
Hydrostatic Resistance
D-751-95, Sec 34.2
385 psi
881 psi
Connectors
Curtain edge construction has 5/8” PP twisted rope reinforcements heat sealed into a pocket with # 4 brass grommets installed approx. 12” oc. to act as a lacing point.
Ballast Chain Weight
5/16” galvanized chain/ 95 lbs. / 100’
3/8” galvanized chain/ 115 lbs. / 100’
The chain ends of each section shall connect by galvanized shackles to aluminum stress plates at the bottom corner of the barrier
Top Load Cable
5/16” vinyl coated 7 x 19 galvanized steel cable w/ min. loading of 9800 lbs.
Seams
All seams to be heat sealed

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