Greenscreen: Column shaped trellis

G U I D E S P E C I F I C A T I O N
Guide Specification 32 94 50 – 5 [WELDED WIRE PANEL
Greenscreen PLANT SUPPORT SYSTEM]
PART 2 - PRODUCTS
2.1 SUSTAINABILITY CHARACTERISTICS
A. The welded wire panel plant support system and accessories shall have completed an ISO
Compliant 14040/44, third party verified Life Cycle Assessment (LCA).
2.2 ACCEPTABLE MANUFACTURER
A. Greenscreen, 725 S. Figueroa St. Suite 1825, Los Angeles, CA 90017; Tel: 1-800-450-3494;
sales@greenscreen.com, www.greenscreen.com.
2.3 PANELS
A. Panels shall be rigid, three dimensional welded wire grid fabricated of 14 gage galvanized steel
wire.
1. Metallic-Coated Steel Wire: Welded-wire, galvanized in accordance with ASTM A641.
B. Face Grid: Wires shall be welded at each intersection to form a 2 x 2 inch face grid on the front
and back of panels,
C. Trusses: Face grids shall be separated by bent wire trusses spaced at 2-inch centers and welded
to front and back face grids at each truss apex.
D. Thickness: [3 inches.] [As shown on Drawings.]
E. Length and Width: As indicated on the Drawings.
F. Tolerance: 1/8 inch in width and 1/8 inch in length.
2.4 ACCESSORIES
A. Trim:
1. Fabricate from 20-gage ASTM A879 galvanized steel.
2. Types:
a. Channel Trim: Thickness of panel x ½ inch legs.
b. Angle Trim: ½ inch x ½ inch legs.
3. Locations:
a. As indicated on the Drawings.
B. Clips and Straps: Provide manufacturer’s standard types of clips and straps suitable for mounting
conditions. Fabricate from ASTM A879 galvanized steel. Adjustable clips shall have ¼ inch
diameter 18-8 stainless steel bolt, washer, and nut.
G U I D E S P E C I F I C A T I O N
Guide Specification 32 94 50 – 6 [WELDED WIRE PANEL
Greenscreen PLANT SUPPORT SYSTEM]
C. Plastic Spacers: Provide ½ inch thick black Ultra High Molecular Weight polyethylene (UHMW)
washers [to hold clips away from mounting surface].
D. Fence Posts: 3-inch [2-7/8” OD ASTM A500] [square ASTM A500, Grade B] steel tube. The
steel strip used in the manufacture of the post shall conform to ASTM A1011. Minimum yield
strength shall be 45,000 psi. [Provide steel post caps.] Overall post length shall be as indicated
on the Drawings.
E. Fasteners for Mounting Clips to Fence Posts: Self drilling, self tapping hex washer head screws,
with strength of Type 410 stainless steel, and corrosion resistance of Type 304 stainless steel.
F. Fasteners for Attachment to Structure Pull Out Value:
1. To Concrete or Masonry: [480 lbs.].
2. To Structural Steel: [480 lbs.].
3. To Light-Gage Steel Framing: [480 lbs.].
4. To Wood Framing: [480 lbs.].
G. Planter: [__________________________________________.]
2.5 FABRICATION
A. Cut to size.
B. Weld trim to panels and grind smooth exterior surfaces of welds.
C. Curved Panels: All curved panels shall be fabricated in the factory using approved “Cut-to-
Curve” or “Crimped-to-Curve” procedures as recommended by manufacturer for diameter of
curve and conditions of use prior to application of powder coat finish to ensure that all wire edges
are coated and protected. The use of “Cut-to-Curve” or “Crimped-to-Curve” fabrication technique
is dependent on the specific radius and the direction of the curve relative to the flat panel layout.
2.6 FINISH
A. Metal components (except fasteners) shall receive commercial grade finish system after
fabrication.
B. Finish System:
1. Pretreat with general purpose, alkaline, water based cleaner / degreaser applied at 240
degrees F.
2. Prime with fusion bond epoxy powder coat.
3. Topcoat with [TGIC] polyester or polyester-urethane powder coat with a minimum total
dry film thickness of not less than [6 mils (0.15 mm)].
G U I D E S P E C I F I C A T I O N
Guide Specification 32 94 50 – 7 [WELDED WIRE PANEL
Greenscreen PLANT SUPPORT SYSTEM]
C. Salt Spray Resistance: Finish shall remain rust free when tested 1680 hours in accordance with
ASTM B117.
D. Finish and Color: [Textured Green.] [Textured Black.] [Silver.] [Bronze.] [Terra] [Gloss
White.] [Color selected by [Architect] from manufacturer’s standards.] [RAL [Classic]
[Design] color [__________].] [Custom color to match [__________].]
E. Touch-Up Paint: Provide high quality, exterior-grade spray paint suitable for conditions of use.
2.7 WARRANTY
A. Standard 1 year warranty is available from the date of substantial completion or 18 months from
the date of shipment, whichever comes first. Greenscreen warrants against defects in
workmanship and materials that would result in failure under intended application and use as
exterior fabricated wall grillage. “Failure” is defined as structural failure of the wire of sufficient
incidents in any panel that would result in the panel not performing in a structural or safe manner
under the intended application and use. Installation is excluded. Contact Greenscreen for further
information, and extensions.
2.8 MISCELLANEOUS MATERIALS
A. Concrete: Refer to Section 03 30 00, CAST-IN-PLACE CONCRETE.
B. Concrete: Normal-weight, air-entrained, ready-mix concrete with a minimum 28-day
compressive strength of 3000 psi (20 MPa), 3-inch (75-mm) slump, and 1-inch (25-mm)
maximum aggregate size [ or dry, packaged, normal-weight concrete mix complying with
ASTM C 387 mixed with potable water according to manufacturer's written instructions].