Wrought Iron Fence Panels Construction

1.1 Scope: This specification covers materials and construction requirements for Ornamental Picket fencing.

1.2 Materials:
A. Pickets-Made of hot-rolled structural steel. The wall thickness
shall be 18 or 16 gauge. Tube shall be manufactured per ASTM
A513. Tube shall be hot-dipped galvanized per ASTM A525-G90. Space between pickets shall be 4" face to face.

1.3 Assembly:

A. Sections shall be assembled using 2, 3 or 4 rails that are punched
out to insert pickets through them. Pickets are riveted to rails using a 1/4" industrial drive rivet #MIW 381080691.

B. Rails are attached to posts by means of rail brackets. Rail brackets are attached to posts using a 1/4" bolt and lock nut. Brackets are attached to the rails using 1/4" industrial drive rivets.

	Size	Wall Thickness	Wgt. Per Ft.	Tensile Strength
	3/4" sq.	18 ga.	.467 Ibs.	45,000 PSI
	1" sq.	18 ga.	.634 Ibs.	45,000 PSI
	1" sq.	16ga.	.827 Ibs.	45,000 PSI
NEW or-> Solid Steel Pickets
	3/4" sq.	Solid	1.9141bs.	50,000 PSI

C. Rings (when specified) are attached to top rail by inserting mounting blocks into top rail and riveting through side of rail using a 1/4" industrial drive rivet #MIW 381081191. The bottom of ring is held in place by inserting dowel that protrudes from ring through predrilled hole in top of bottom rails.

D. Finials are attached to pickets using a 1/4" industrial drive rivet #MIW 381080691.

B. Rails - Made of hot rolled structural steel, rolled into "U" channel measuring 1 3/8" wide x 1 1/2" deep x .120 wall thickness. Manufactured per ASTM A513 and hot-dipped galvanized per ASTM
A5230G-90.

C. Posts - Shall be hot rolled structural steel. The wall thickness shall be 14 gauge. Tube shall be manufactured per ASTM A513. Tube shall be hot-dipped galvanized per ASTM A525-G90.

1.4 Coating:
Every fence has a galvanized undercoat inside and outside all members to assure maximum corrosion resistance. All fence components are then given a 4 stage "Power Wash" pretreatment process that cleans and prepares the galvanized surface to assure complete adhesion of the finish coat.

.	Size	Wall Thickness	Wgt. Per Ft.	Tensile Strength
.	2" sq.	14 ga.	2.164 Ibs.	45,000 PSI
.	2 1/2"' sq.	14 ga.	2.733 lbs.	45,000 PSI
.	3" sq.	12 ga.	4.286 lbs.	45,000 PSI
.	4" sq.	12 ga.	5.77 Ibs.	45,000 PSI
D. Rail Attachment Brackets - Cast of malleable iron per ASTM A47 Grade 32510. Hot-dipped galvanized per ASTM A153. E. Finials (when required) - Cast of gray iron with minimum 20,000 PSI. Hot-dipped galvanized per ASTM A153. F. Rings (when required) - Cast aluminum per ASTM A319.

Stage1 - All metal is CLEANED and PHOSPHATE treated simultaneously to form an AMORPHOUS STRUCTURE on the galvanized surface for SUPERIOR POWDER COATING ADHESION.

Stage 2 - All meta) is given a thorough WATER RINSE to prepare the phosphate coated surface for the SEAL RINSE (Stage 3).

Stage 3 - All metal is given a NON-CHROMATED seal rinse, which further IMPROVES CORROSION RESISTANCE. NOTE: NON-CHROMATED rinses are environmentally friendly.

Stage 4 - All metal is then baked dry, prior to the POWDER COATING being applied.

All metal is then given a polyester resin based powder coating applied by the electrostatic spray process, to a thickness of 2.5 (.0635 mm) mils. The finish is then baked in a 450 degree F (232°C) (metal temperature) oven for 20 minutes.


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