Specifications_140P3022Q0067.pdf

Specification Sheet Antietam National Battlefield

Purchase Cannon and Carriages Revised 6/9/22

General:

Antietam National Battlefield requires reproduction artillery equipment to safely and effectively tell the story artillery used during the bloodiest one-day battle in American history. There were over 520 cannons engaged in this battle, firing over 50,000 rounds of artillery in 12 hours of combat. The Park has cannon and its supporting equipment on display in the park to show the location of artillery and the different types of cannons.

Specifications / Salient Characteristics for:

1. 20 lb Parrott rifle barrel (20 lb. Parrot aluminum non firing barrel with 6" rifling)

2. #3 aluminum field carriage for 20 lb. Parrot

3. #1 aluminum carriage for 6 lb cannon barrel (park will mount historic tube)

4. Two Aluminum limbers with two limber chests

5. Aluminum Cassion with 2 limber chests and spare wheel

Civil War Artillery Cannon and associated equipment, Delivered:

Requirement SHALL have:

• All artillery equipment shall be made to match the specification outlined in the Ordnance Manual for the Use of the Officers of the United States Army, published in 1861(See attached)

• 20-Pdr Parrott Barrel shall be Cast Aluminum, and (Non-Firing) incapable of firing. This barrel shall be hand finished as close to original specifications as possible. Rifled bore is a minimum of 8 inches deep. Barrel shall be etched, primed, and painted black. Barrel shall have a minimum wall thickness of 1.25"

• All of the pieces that were historically made of wood shall be made of aluminum or steel.

• Aluminum Carriages are cast from thirty-five thousand (35,000) pound tensile strength aluminum.

• All castings marks shall be ground and sanded smooth.

• All aluminum castings shall have water drain passages, in inconspicuous locations

• Elevation screw shall be machined aluminum

• Wheels shall be solid aluminum and machined to fit the axle arm with precision.

• The finished carriage, limber and caisson shall be capable of resisting effects of weather in an unprotected outdoor environment

• Areas representing wood parts shall be coated Sherwin Williams Canon Green (see attached color sheet). Areas representing iron hardware and fasteners scuffed with 220 grit and then painted Sherwin Williams Black (see attached color sheet).

• Hardware shall be aluminum or steel. Fasteners shall be steel.

• Visible fasteners (nuts, bolts, washers) and hardware to be based on "US Army

Standards”

• Steel hardware shall be painted with primer and finished with oil-based gloss black top coat.

• All linchpins and cap square keys shall have cross holes to secure from vandalism. All fittings, attachment points, and tool brackets shall be functional for their intended use and shall be resistant to vandalism and theft.

• Cannon carriages shall include sponge and rammer chain, ear plate for sponge plate hasp, and ear plate and key for worm.

• Barrier coating shall be applied between steel and aluminum components so that no galvanic corrosion will take place.

• Shop drawing of all reproduction artillery items shall be submitted to the COR for review and approval accompanied by a CM-16 Transmittal Form before production begins.

Review is to determine compliance with the specifications set forth in this document and all reference documents ( Ordnance Manual for the Use of the Officers of the United States Army, published in 1861, Color Samples, etc.) associated with this requirement. Shop drawings shall display a high level of detail and clearly represent all critical dimensions for compliance with the requirement including but not limited to, lengths, widths, heights, thicknesses, radiuses, and angles. Shop drawings shall be to scale.

• Submittals for all materials utilized to fulfill this requirement including metals, paints, and accessories shall be submitted to the COR for review and approval before production begins. All submittals shall be accompanied by a CM-16 Transmittal Form and submitted to the COR electronically.

• All items shall carry a one year workmanship and materials warranty. Any further product warranties related to this requirement including paint finishes shall be provided to the government before acceptance.

• All items under this requirement shall be delivered to Antietam National Battlefield 5831 Dunker Church Rd, Sharpsburg, MD 21782.