Item Brochure

15
PRODUCT SPECIFICATIONS
UB 36-2/ UB 48-2
UB 36-2/UB 48-2
36" / 48" Universal Barriers
Specified tree root barriers are mechanical barriers and root
deflectors to prevent tree roots from damaging hardscapes
and landscapes. Assembled in 2' (61 cm) long modules to
create varying lengths for linear applications directly beside
a hardscape adjacent to one side of the trees or for large
perimeter surround applications with a minimum 8' (2.43 m)
diameter using 12 panels.
A. M A T E R I A L S
1. The contractor shall furnish and install tree root barriers as specified.
The tree root barriers shall be either product # UB 36-2 or UB 48-2 as manu-
factured by Deep Root Partners, L.P., 530 Washington Street, San Francisco,
CA 94111 (800/458.7668), or approved equal. The barriers shall be black,
extruded panels, of 0.80" (2.03mm) wall thickness in modules 24" (61cm)
long either 36" (91 cm) or 48" (122 cm) deep; manufactured with homopolymer
polyethylene with added ultraviolet inhibitors; recyclable. Each 2' (61 cm)
section shall have:
Not less than 4 molded integral vertical root directing ribs of a minimum
0.080" (2.03mm) thickness protruding 1/2" (12.7 mm) at 90° from interior of
the barrier panel, spaced 6" (152.4 mm) apart. See panel drawing.
An integrated joining system providing for instant assembly by sliding one
panel into another.
2. The basic properties of the material shall be:
MATERIAL & ThICKNESS
Properties ASTM Test
Method
Typical Value
Tensile stress @ yield D638 3,800 PSI
Elongation @ break % D638 10%
Tensile Modulus D638 155,000 PSI
Notched Izod Impact D256A 0.4 - 4.0
Flexual Modulus 73 ‡ PSI D790 145,000
Hardness Shore D2240 P66
B. C O N S T R U C T I O N A N D I N S T A L L A T I O N
1. The contractor shall install the tree root barriers with the number of
panels and in the manner shown on the drawings. The vertical root
directing ribs shall be facing inwards to the root ball and the top edge shall be
1/2" (12.7 mm) above grade. Each of the required number of panels shall be
joined in a linear fashion and placed along the adjacent hardscape or where
specified connected to form a circle around the root ball.
2. Excavation and preparation shall conform to the drawings.
T y P I C A L P L A N T I N G I N S T A L L A T I O N U S I N G
DEEPROOT UB 36-2 OR UB 48-2
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