Attachment_1_Scope_of_Work_(06-05-2023).pdf

6/5/2023

HISTORIC PRESERVATION TRAINING CENTER

1. BACKGROUND AND OBJECTIVES

The Soldiers’ and Airmen’s Home National Cemetery was established in 1861 as a resting place for fallen soldiers of the Battle of Bull Run and other nearby engagements. It was the first National Military Cemetery accepting the remains of soldiers and officers during the Civil War.

The cemetery grounds were carved from the adjacent property of the Old Soldiers Home property and quickly was reached full capacity by the end of the Civil War. Arlington National Cemetery became the primary site for receiving the fallen military by the end of the war and continues serve that purpose today. Both Cemeteries are administered by the Office of Army Cemeteries. The SAHNC Cemetery expanded from 6 to 16 acres in 1883 when the perimeter fence was installed, The Lodge Gate was installed roughly at same time as fence near the Superintendents Lodge located on the south end of the Cemetery along Harewood Road. Only a limited number of burials still occur at the Cemetery currently.

The objective of this procurement is to preserve the historic landscape feature of the Lodge Gates along with the adjacent curved fence sections. The gates are to be made fully functional using the existing locking mechanism in conjunction with the cane bolts that are currently missing.

Some extraneous componentry that are later additions to the gates and non-functioning will be removed. The Lodge Gates and flanking fence panels will be temporarily removed from the cemetery and repaired and repainted offsite by a qualified contractor specializing in ironwork repairs and protective coatings. The resulting outcome of the project will address the deferred maintenance of the gates, remove lead-based coatings and provide an esthetically pleasing and secure entry into the cemetery.

2. SCOPE OF WORK

Independently, and not as an agent of the Government, the Contractor shall provide all labor, materials, equipment and tools necessary to provide removal, transportation to and from the Contractors’ workshop, paint stripping, cleaning, metal repairs, surface preparation and painting of fence panels, vehicle gates, and reinstallation of fence panels and gates.

Fence Components:

A. Lodge Gates

The Lodge Gates are a two-leaf vehicle gate 14’2-1/4”X 10’8: situated near the Superintendent's Lodge entrance on the south side of the Cemetery along Harewood Road.

The iron gates are mounted onto a modern square iron post that sets adjacent to the historic stone pillars of molded limestone. The vehicle gates are hung by 4 hinges welded to the iron post. Each has a decorative reverse arched design on top, whose tallest point is at 10’8’’ at the ends and swoops down to their meeting point in the center at 7’9-3/4”.

The round rod pickets of the gate panels are spaced at 6 inches on center. The tops of the pickets are terminated alternately with spear finials alternating with pointed conical tops.

The lengths of the pickets vary to follow the curved top of the gates. A row of bent iron rod members intersects the pickets on the bottom portion of the gates and are topped with ball finials. An iron brace runs across each leaf diagonally to keep the gates from sagging and racking.

The gates have a derelict magnetic lock mechanism attached to the latch casing and remnants of an automatic closure device that are to be removed. Currently the gates are locked using a chain and padlock, because the original lock is presumed to be broken and the magnetic lock is partially disassembled. A key objective of this project is to have the original latch lock mechanism to be repaired to operational condition and used to close and lock the gates. The Lodge gates have extant cane bolt hardware to keep the gates in their shut and locked position in conjunction with the original lock box. The cane bolts are currently missing, though and will need fabricated and reinstalled. The sockets that receive the cane bolts imbedded into the pavement need to be cleaned and/or repaired to allow the canes to operate successfully.

The iron holders mounted in the pavement on each side of the gates secure them in the open position. These appear to be functioning well and will need to be repainted in situ. The iron posts that carry the vehicle gates will also be prepped and repainted in the field with the same approved coatings system as the gates and fence panels. The adjacent historic stone gate posts, currently independent of the system will need to be protected from damage and overspray from any onsite work.

B. Lodge Fence

Two sections of fence flank the Lodge Entrance Gate with a height of 6 feet. Each side has three curved panels with an approximate radius of 18 feet and each ranging in length from 8 to 10 feet. The fence panels have similar detail as the Lodge gates including a series of iterum bars that are bent at the bottom portion of the panel. Spear finials are found only on the posts between each section of the fence, while the pickets of the fence panels have shallow conical tips.

Each post has bent metal brackets on the interior sides that are anchored into the ground to stabilize the fence. The set of 8 scrolls on the exterior side have less ironwork craftsmanship and were apparently added later. These brackets merely rest atop the sidewalk surface and are not imbedded into the masonry. Both the curvature of the fence and the inside side scroll brackets anchored into the ground make these added brackets unnecessary to stabilize the fence sections. The exterior brackets shall be removed.

The treatment of the historic metal fence and gates shall include, but not be limited to removing rust and corrosion, paint stripping and re-painting the metal work.

The treatment of historic items shall be based on minimal disturbance as follows:

1) Treat existing ornamental ironwork to reestablish weather resistance while maintaining the existing form of each ornamental metal components.

2) Stop progress of deterioration and corrosion by removing deteriorated coatings and corrosion and reapplication of protective coatings.

3) Contractor shall treat without significant dimensional loss of historic material.

All surfaces shall be tested for the presence of lead paint and workers protected in accordance with OSHA standard on lead paint exposure, if found.

3. WORK STATEMENT

The Contractor shall perform the following work:

A. Detach and transport the gates and fence panels from the Cemetery site to the shop B. Remove all existing coatings and corrosion to bright metal.

C. Remove derelict components from the automatic closure mechanism which is no longer in operation and fill and/or smooth cut surfaces to match the quality of the existing ironwork.

D. Remove the eight substandard scroll brackets on the exterior side of the fence section (inside curve) and blend the cut surface areas on the gate post to blend with the existing

E. Fabricate new cane bolts compatible with existing hardware and install to functional condition.

F. Repair existing lock/latch box mechanism to operational condition.

G. Prime and paint all gate and fence components with a durable rust-resistant coating compatible with iron in a black semi-gloss finish.

H. Inspect, repair and paint all gate hardware and lubricate bearing points as needed in the field.

I. Delivery of all gates and fence back to the Cemetery and reinstall them in their appropriate positions J. Adjust and assure complete and optimal functionality of all gate hardware and components.

K. Field Touch-up of the metal fencing and gates

A. GENERAL

(1) Perform historic treatment of ornamental metal work in the following sequence

(a) Clean ornamental metal surfaces.

(b) Remove Paint to bare metal.

(c) Remove and treat corroded surfaces to deter further.

(d) Repair existing metal, including patching, splicing and reinforcing. Retain as much original material as possible.

(e) Remove derelict closure and lock hardware on the Lodge Gate

(f) Replace/ repair any damaged or missing components with like materials.

(g) Prime and coat metal fencing components and gate surfaces

(h) Field touch-up coat metal fencing and gate surfaces.

(2) Assess condition of all hinge hardware after removal of gate panels and make repairs as determined necessary: Match existing materials and features and repair after removal of existing work with as much original material as possible to complete the repair.

(3) Replacement: Duplicate and replace items with new materials in kind (general).

(4) Apply a minimum of one full primer coat and two full top protective coatings as specified by the manufacturer and best industry practices. See Part C-8a for list of coating specifications. Any coatings will need to be approved by the COR.

A sample of the coating system will need to be submitted for pre- approval by the COR

(5) Metals General: Provide materials with smooth, flat surfaces, unless otherwise indicated. For metal fabrications exposed to view in the completed work, provide materials without seam marks, roller marks, rolled trade names, or blemishes.

(6) Fasteners: replace fasteners for hinges with stainless steel matching the threading size and head shapes of all existing fasteners. Do not use metals that are corrosive or incompatible with materials joined.

(7) Miscellaneous Materials

(a) Welding Electrodes and Filler metal: Type and alloy of filler metal and electrodes as recommended by producer of metal to be welded or filled, complying with applicable AWS specifications and as required for color match, strength and compatibility in fabricated items.

B. REMOVAL, LABELING, DELIVERY, STORAGE, AND

REINSTALLATION OF FENCE PANELS, PEDESTRIAN GATES AND

VEHICLE GATES

The Contractor shall pick-up and deliver the fence panels, pedestrian and vehicle gates to Soldiers’ and Airmen’s Home National Cemetery, 21 Harewood Road Washington, DC.

The Contractor shall:

(1) Remove gates from the current installation

(2) Label the gates for reinstallation in their historic location

(3) Pack, store and handle the gate panels. Pack in suitable frames or in heavy-duty cartons. Components shall be stored in dry storage facility until ready for treatment.

(4) Be responsible for safe transportation to and from job site during removal and installation of fence panels and gates

(5) The Contractor shall perform a material inventory of fence panels and gates and notify the COR of any undocumented damages or mistaken information in writing within 48 hours receiving or delivering fencing components.

(6) Contractor shall provide the COR with a copy of inventory upon request

(7) The COR will notify the Contractor of its intent to inspect the work at the

Contractor’s facility prior to the application of primer and coatings. Once inspection of repairs and addition of fabricated replacement is performed application of primer and paint can be performed.

C. ORNAMENTAL METALWORK TREATMENTS

(1) Lodge Gates and Curved Fence sections

Treatments to all metal gates shall include but not be limited to metal repairs which include removing rust, straightening of bent pickets, selective replacement of complete elements when missing or damaged, installation of new components, re-fabrication of existing components, paint removal and re-coating the metal work. Treatment shall address the presence of a lead-based coatings or plugs. The vehicle gates shall be in complete working order including all hardware when reinstalled. The rails of two leaves shall align when in the closed position.

Treatment shall be based on minimal disturbance as follows:

(a) Protect existing ornamental metal to reestablish weather resistance and structural integrity while maintaining the existing form of each item of ornamental metal.

(b) Stop the progression of deterioration and corrosion by removing deteriorated coatings, corrosion and reapplication of protective coatings.

(c) Repair deteriorated items to retain as much original material as possible.

(a) Duplication and replacement of historic items shall be used only where specified.

(2) Removal of Coatings and Corrosion

(a) The gate components and accessories may contain lead-based paint. The

Contractor shall submit the proposed industry approved method of removal for COR review and approval prior to the start of any work. The Contractor shall remove lead based and other coatings and dispose of using approved methods in compliance with OSHA, federal, state and local regulations.

(b) The paint removal system shall remove paint without significant dimensional loss or damage of historic material.

(c) Remove and stabilize existing deteriorated corrosion to clean metal

(d) Once corrosion is removed, the panels and components shall be inspected to identify additional repairs and treatment options not identified previously. The Contractor shall notify the COR of unforeseen detrimental conditions. The Contractor shall submit the list for COR review and approval. Once reviewed, the COR will provide either written direction or through visual inspection confirmation of the repairs. Additional unforeseen repairs will be authorized to the modification to the contract. No work shall begin until written authorization is received.

(e) The Contractor shall prepare a sample of work for the COR to review and approve after paint removal and final cleaning. The COR will inspect and approve. This sample shall be used as a guide for all remaining work;

however, the COR reserves the right to inspect work at the Contractor’s facility at any time during the removal process.

(3) Repair Existing Metal, Remove Derelict Components & Fabricate

Replacement Parts

(a) Repair: Patching with new materials by filling, soldering, or welding with a compatible material. The Contractor shall splice new material to the deteriorated using industry standards and best practice. An epoxy filler may be used for small blemishes and non-structural cracks in the iron components.

(b) Fabricate: Replace any missing or damaged item with a duplicate of same design and in-kind materials.

(c) Replace heavily deteriorated or missing parts or features of ornamental metal with compatible materials.

(d) Remove derelict magnetic lock plates and automatic gate closure hardware from the Lodge Gate and repair cut surfaces to match original.

(e) Remove 8 decorative scrolls from the exterior side of the fence panel sections and blend cut surface on the gate posts to match existing texture of the gates.

(f) Fabricate two cane bolts that work with the existing hardware on the gate panels and sockets in the pavement. Repair/replace receiving sockets in the pavement as needed to fully functioning condition.

(g) Comply with American Welding Society (AWS) for recommended practices in welding and brazing.

(h) Provide rebates, lugs, and brackets necessary to assemble units and to attach to existing work. Drill and tap for required fasteners. Use concealed fasteners where possible; use exposed fasteners to match existing work.

(i) Metal Materials: Provide ornamental metalwork composed of metals of the forms and types that comply with requirements of referenced standards and which match existing metals for alloy and finish.

(j) Welding Rods and Bare Electrodes: Select according to American Welding

Society (AWS) specifications for metal alloy welded.

(k) Repair and repaint with the same degree of attention all the components not removed with the gate leaves including those embedded into masonry posts, holding blocks and pavement. These comprise of the base pivot blocks, anchorage hinges, gate posts and all other associated gate hardware including those meta the granite holding blocks of the pedestrian gates and the holding block for the vehicle gate embedded into the driveway pavement.

(4) Cleaning and Preparation of Ornamental Surfaces

(a) Remove hardware, covers, plates, and similar items already in place that are removable that are not to be painted. If removal is impractical or impossible because of size or weight of item, provide surface-applied protection before surface preparation and painting.

(b) Clean substrates of substances that could impair bond of coatings

(c) Remove all paint coatings using abrasive, chemical or mechanical methods to a clean, bright surface. COR shall inspect the gates after paint removal and prior to any application of finish coatings.

(5) Prime and Coat Metal Gate Surface Coatings

(a) Products:

1) Primer: Tnemec Series 90-97

2) Intermediate: Series 27 Typoxy

3) Intermediate: Series 73 Polyurethane

4) Finish Coat: 1071 Fluoranar:

Tnemenc 35GR – Black, Semi-gloss

OR an equivalent epoxy or oil-based, metal paint system approved in writing by the

COR.

(b) Apply high-performance primers and coatings according to manufacturer's written instructions and recommendations

(c) Detachable hardware and castings: Remove, coat, and then reinstall

(d) The Contractor shall supply industry standard work sheets with daily test results.

(e) Finish paint shall be applied to all previously coated surface in accordance with the approved paint matrix and accepted sample. High risk and hard to access surfaces shall be “stripe” coated using a brush or spray. Striping shall be done with the same semi-gloss black color specified for the finish coat. The COR will notify the Contractor of its intent to inspect the work at the Contractor’s facility prior to packing for shipment. Once inspection is complete, parts shall be palletized with soft dunnage between parts.

(6) Installation of the Gates and Fence Panels

(f) The Contractor shall notify and schedule the reinstallation of the gates and fence panels with the COR with at least 48 hour notice.

(g) Secure and transport the gates and fence panels to the Cemetery.

(h) Provide all tools, supplies & equipment necessary to install the gates and fence panels.

(i) Remove the temporary gates and fence barriers. Assist loading the temporary gates onto the government vehicle.

(j) Install the vehicle gates to fully operational order, including closing and locking mechanism and cane bolts. Lubricate all contact points with appropriate grease.

(7) Field Touch-Up

(a) The contactor will touch-up all areas of missing or damaged paint to include the gate and fence and fixed componentry.

(b) Touch up paint shall be delivered by the Contractor in quart sized labeled containers. Delivery of other materials, including repair, cleaning and finishing materials to the project site shall be in manufacturer’s original and unopened containers, labeled with description of contents and names of manufacturer including relevant SDS

(c) Comply with manufacturer’s written instructions for minimum and maximum temperature requirements for storage of patching and cleaning materials.

(d) The Contractor shall provide individuals, products and safety measures to do on- site field application

4. PROJECT MOBILIZATION

CONTRACTOR’S USE AND ACCESS OF PREMISES

A. Access to site will be arranged by the COR according to the schedule submitted by the Contractor and approved by the COR. The Contractor shall coordinate and schedule his work under this Contract to cause the least interference with the preservation activities.

B. All onsite personnel shall carry government issued identification such as a driver’s license or a military PIV/CAC card to be inspected upon entry to the Cemetery. All vehicles are subject to inspection by Arlington National Cemetery Security Officers.

C. Smoking is prohibited within fifty feet of the structure and only in designated areas.

D. All food waste and construction debris shall be removed by the Contractor daily from the site.

5. TIME FOR COMPLETION AND CONSTRUCTION PERIOD WORK SCHEDULE

The date for completion of all work is August 4, 2023. Within 1 day after contract award, the Contractor shall generate submittals for COR review and approval. No work on site will begin until all submittals are approved. Workers will be required to obtain security clearance badges which will be coordinated with the COR.

Scheduling onsite work will be coordinated with COR with 48 hours notice for access to the site.

Monday through Friday. With the removal and installation of the gate, the contractor shall arrange and coordinate access to the site with the COR at least 48 hours of notice. The costs of work schedule will be incorporated into the bid package.

The Contractor should coordinate with the COR the security of the Cemetery while the gates are removed. The NPS will supply a temporary vehicle gate that the contactor will install after the gates are removed. The Contractor will supply a temporary high quality construction fence covered in black visual screening material in place of the curved fence sections

6. JOB SITE PROTECTION

A. The Contractor shall use reasonable care and responsibility to protect the site against damages. The Contractor shall be responsible for the correction of any damage incurred because of the performance of the contract. The Contractor shall adequately protect the historic structure and landscape from damage while performing the required work.

B. Return the job site to its original condition upon completion of the work.

7. SAFETY

A. The work area shall be maintained in a clean and safe condition at all times. The Contractor shall with the use of barricades, ropes, signs, or audible signals, take all necessary precautions for the protection of the work and safety of the public. Any accident or incident, in regard to the work under this contract, shall be reported immediately, in writing, to the

CO.

B. Reportable Accidents: A reportable accident is defined as death, occupational disease, traumatic injury to employees or the public, property damage by accident in excess of $100, and fires. Notify Contracting Officer immediately in the event of a reportable accident.

Within 7 days of a reportable accident, fill out and forward to Contracting Officer an Accident/Property Damage Report (Form CM-22). Form may be obtained from the CO.

C. All Other Accidents: The Contractor shall report all other accidents to the Contracting

Officer as soon as possible and assist the Contracting Officer and other officials as required in the investigation of the accident.