Bldg._45_Stucco_SoW.docx

SUMMARY OF WORK

Repair the West Elevation Stucco of the Historic John Wilson Building (B45)

PART 1 GENERAL

1.1 PROJECT DESCRIPTION

A. GENERAL DESCRIPTION: The project concerns the removal of existing stucco, repointing of stone mortar joints, and application of new stucco (1100SF) on the west elevation; carpentry repairs to 10 windows; painting approximately 2000SF to include 10 windows; 2 doors/doorways; 50SF of rake boards with soffit and cornice returns; rear porch decks and underside, steps and rails on the west and north elevations; removal of 90LF of existing downspouts and installation of 2 new downspouts, totaling 50LF; painting the new downspouts and related straps, hangers, and fastners, approximately 70SF; installation of a cap on top of the west elevation chimney; and related staging, scaffolding, protections, cleanup, and warranty to properly waterproof the exterior of the Historic John Wilson Building #45 in the Harpers Ferry Lower Town.

B. THE JOHN WILSON BUILDING: The historic John Wilson Building was erected in 1826 and is an invaluable feature on the historic streetscape of historic Lower Town, Harpers Ferry, West Virginia. It is located at the west end of Shenandoah Street and is the first historic building encountered by the public when they disembark from the buses in Harpers Ferry Lower Town. This building contains the visitor bookstore, the public ADA restroom, offices for HAFE employees, the Harpers Ferry Historical Association, HVAC spaces, and storage. It is one of the most visible and frequented buildings in the park which receives over 350,000 visitors per year. Therefore, the John Wilson Building (B45) is an invaluable component of the Park’s 19/th century urban landscape and major themes, such as: The American Civil War Theme, the 1859 John Brown Raid, Industry and Transportation, Black History, and Civil Rights.

C. EXISTING CONDITIONS: With the stucco deteriorating on the west elevation, the 10 windows on the west and north elevations showing rot and paint failure; and the 2 doorways, the rear porch and its underside, rails, and steps all requiring new paint, the John Wilson Building is ready for project maintenance to sustain its historic character.

1. The Contractor shall anticipate the possible existence of Lead Base Paint residues in the wood fibers of existing door, doorway, and window wood feature substrates.

D. SITE WORK DESCRIPTION AND APPROXIMATE QUANTITIES: The contract scope of work for the John Wilson Building stucco restoration and exterior painting includes:

1. Submittals, Samples, Safety Plan, Mock-ups, and Required Work Plans

2. Staging, Safety, Materials, Signs, Barricades, Scaffolding, Parking; Site Protections, Building Protections, Personnel Protections, and proper Site Use.

3. Verification of Existing Conditions, quantities, and work items..

4. Progress Site Inspections: To verify quantities of work, repairs, progress, quality and completeness of work.

5. Take precautions and protections for possible residues of Lead base Paint.

6. Carpentry repairs, replacements, and reglazing at the 10 windows as per the PART 4 WINDOW REPAIR SCHEDULE.

6. Remove the existing stucco on the west elevation 1100SF down to stone substrate.

7. Rake and repoint the exposed stone mortar joints 1100SF on the west elevation wall. .

8. Samples and Mockups for Mortar, Repointing, and Stucco.

9. Apply new stucco (1100sf) on the west elevation. The new restoration stucco will comply with approved mockups

10. .Low Pressure Prewash, Clean, Scrape, Prep, Prime and Paint the 10 windows, 2 doors/doorways, 50 square feet of gable rake boards with cornice and soffit returns, the rear porch deck, underside porch deck, steps, posts, and rails on the west and north elevations for an approximate total of 2000sf of painting.

11. Remove and discard the existing Y configuration of 90LF of downspouts, the collector, and drive hangers in the stucco and stone wall of the west elevation. Cap the existing downspout boot in the ground.

12. Install 2 new 4 inch diameter round downspouts from the roof metal gutters as straight vertical drops to the existing ground level stone gutters. Install 1 downspout at the building northwest corner and 1 at the southwest front porch corner for a total of approximately 50LF, with appropriate strainers, elbows, hangers, straps, connections, and flow direction into stone gutters.

13. The new downspouts and related metal features shall be cleaned, primed, and painted.- approximately 70SF.

14. Fabricate, provide, and Install a metal frame, screened, ventilator cap on top of the west elevation roof chimney of Building 45. The cap shall match the existing on Building 44 and shall be painted black.

15 Punch List Inspection and Final Inspection.

16. Cleanup: Site cleanup and job cleanliness on a daily basis. Final surface cleaning, clearance of debris, and flush downspouts.

17. Close-out: Removal of Staging, Scaffolding, Equipment, Vehicles, Barricades, Signs and Materials; and Site landscape repairs

18. Contract Warranty. Submit a 1 Year Warranty to guarantee all work.

1.2 PURPOSE: PROJECT JUSTIFICATION

A. PRESERVATION MAINTENANCE The project is necessary to replace the deteriorating exterior stucco on the west elevation, to repair and replace rotting window features, and to paint the exterior west and north elevations and rear porch which are overdue for new protective coatings. It is the mission of the National Park Service to restore and preserve this historic building for the benefit of the visiting public and for the heritage of the nation

1.3 LOCATION

A. LOCATION: The John Wilson building is a property of Harpers Ferry National Historical Park, National Park Service, in Harpers Ferry, West Virginia. .

B. ADDRESS: 723 Shenandoah Street in historic Lower Town, Harpers Ferry, West Virginia, accessible off Route 340.

C. HISTORIC BUILDING: The John Wilson building, erected 1826, is an essential part of the national heritage which is the mission of the National Park Service to preserve for public education and the country's posterity. The Contractor shall protect the site and the building for the duration of his work within established project limits.

1.4 CONTRACT PERFORMANCE

Independently, and not as an agent of the Government, the Contractor shall provide the National Park Service with all plans; submittals; correspondence, labor, supplies, equipment, materials, construction, deliveries, inspections, waste removal, Lead Base Paint precautions, warranties, cleanup, close-out, and travel necessary to perform the following:

A. SUBMITTALS: Manufacturer's Literature; samples, mock-ups, plans, schedule, and warranty. Approvals by the Contracting Officer re required before starting work.

B. STAGING AREA: Establish and maintain a project staging area on an approved site with protections, parking limitations, vehicle access/egress restrictions, and vegetation and lawn maintenance.

C. PROTECTIONS: Provide and maintain building and site protections; staging, scaffolding, signs, barriers, delivery, parking, containments, lawn and landscape protections, contractor/employee protections, and daily cleanup. All work will be performed according to OSHA safety standards.

D. CONSTRUCTION: Perform the project scope of work to the satisfaction of the Contracting Officer .

E. CLEANUP & CLOSEOUT: Removal of Staging and Materials; Site repairs; Provide Notebook (2 copies) of submittals. Contract Warranties.

G. ONE CONTRACT: All work will be performed under a single contract. The Contractor shall provide the government with a one year warranty to guarantee the sustainability of the work.

1.5 SUBMITTALS

A. PROJECT SCHEDULE: For Contracting Officer review and approval.

B. SITE USE PLAN: The Contractor shall submit Site Use Plans for Contracting Officer review and approval: i.e. plans for site use, scaffolding, mobile equipment, storage; signs, parking, deliveries; debris removal; cleaning; personnel safety, building and landscape protection; circulation; and fencing.

1. MOBILE EQUIPMENT: The Contractor may elect to use man lifts, scissors lifts, or other work related platform equipment to access work areas, as proposed in the submitted work plans and as approved by the Contracting Officer.

2. The Contractor shall comply with all regulations of OSHA, with the traffic controls of the National Park Service, with the traffic laws of the Town of Harpers Ferry, and the traffic laws of the State of West Virginia

C. SAFETY PLAN: The Contractor shall submit a Safety Plan before commencement of work for Contracting Officer review and approval D. PRODUCT DATA: The Contractor shall submit specifications and manufacturer's technical information for each type of material.

E. SAMPLES: The Contractor shall submit material samples for review and approval of color, texture, dimensions, thickness, and quality of materials, to include but not limited to the following: .

Samples of Mortar materials and mixes.

Sample of Stucco materials and mix.

Samples of biocide/fungicide for paint Pre-Wash.

Samples of glass and wood feature replacements Samples for Gutter and Downspout materials such as downspouts, fasteners, straps, and hangers.

Samples for Sealants, Fillers, and Epoxies.

F. MORTAR MOCKUPS: The Contractor shall submit samples of dried mortar mixes to show color and texture for the Contracting Officer's review and approval. Mortars will not be applied until COR approval.

G. MORTAR POINTING MOCKUPS: The Contractor shall submit samples of mortar pointing on the stone wall to show mortar color, bonding, tooling, and curing. These mortar pointing techniques must show how the joints will create keys and a bonding surface for the stucco layer applications.

H. STUCCO MOCKUPS: The Contractor shall submit mockups of dried stucco samples to show color, bonding, tooling, curing, thickness, and surface texture. These samples must show how the applications of scratch, brown, and finish coat layers will bond and achieve the thickness for an accurate restoration.

I. SHOP DRAWINGS: Submit shop drawings with dimensions and notes showing the design and connections to fabricate a new metal frame, screened, and sheet metal covered ventilator chimney cap for the chimney on the west elevation gable end of Building 45.

J PRODUCT DATA NOTEBOOK: The Contractor shall compile and submit 2 copies of a notebook with the cut sheets and specifications of all products submitted for approval and used on the job.

K. WARRANTY: Upon completion of work, the Contractor shall provide the Contracting Officer with a 1 year warranty.

1.6 CONTRACTOR'S USE OF PREMISES

A. PORTASANS - The Contractor shall use the Park public restrooms.

B. CONSTRUCTION CAMP: Establishment of a camp within the park will not be permitted.

C. CONDUCT: The Contractor shall at all times conduct operations to ensure the least inconvenience to the public and shall install and maintain protections and screens on this staging and scaffolding to protect the public. Screens must be either a dark green or brown color.

D. THE PARK WILL BE OPEN TO THE PUBLIC DURING CONSTRUCTION.

E. BUILDING ACCESS: The Contractor shall maintain access to the buildings and grounds for National Park Service administration.

F. SCHEDULE COORDINATION: The Contractor shall coordinate the construction schedule and operations with the Contracting Officer and shall abide by the approved plans for staging, storage, site use, safety, protection, cleaning, circulation, and fencing as per the review by the Contracting Officer.

G. STORAGE OF MATERIALS: The Contractor shall confine storage of materials to the areas approved by the Contracting Officer.

1. The Contractor shall assume full responsibility for the protection and safe keeping of products under this contract stored on the site.

2. The Contractor shall move any stored products, under Contractor's control, which interfere with operations of the Government.

H. PROTECTION: The Contractor shall provide, install, and maintain landscape and building protection for all features affected by contract work. Return staging area, building, and site to original condition after construction operations.

1.7 SPECIAL CONSTRUCTION REQUIREMENTS

A. NATIONAL PARK SIGNIFICANCE: The John Wilson Building (B45) is located in a National Park which is active with government employees, with hundreds of visitors who pass by the sites every day, and is therefore open to the observations of the public. The Contractor shall conduct work and manage the site with full attention to proper behavior and cleanliness.

1.8 FIELD VERIFICATIONS

A. CONTRACTOR FIELD VERIFICATION: The Contactor shall survey the conditions of the building prior to commencement of work to verify the scope of work description, dimensions, schedules, and quantities.

1. Before starting work, the Contractor shall report his inspection to the COR and any discrepancies or differences which are found.

1.9 QUALITY CONTROL

A. Work shall comply with the highest standards of restoration carpentry, painting, and finish stucco.

B. The Contractor shall recognize the significance of the historic site and building and shall protect all existing fabric and grounds affected by his work. Any damages to the building fabric and landscape shall be repaired by the contractor at no cost to the government.

C. Inspections and Site Maintenance: The Contractor shall work closely with the COR and shall anticipate daily visitations and inspections of work progress. The Contractor shall perform daily cleanup and debris removal to maintain an acceptable image in the National Park and in the Town.

1.10 STAGING, SCAFFOLDING, AND SITE PROTECTIONS:

A. The Contractor shall be assigned staging, scaffolding, off loading, and parking areas for his work. The Contractor shall maintain the vegetation within the project work limits, staging, and parking areas by mowing and weed whacking.

B. The Contractor shall install site protections and erect means of access which are compatible with OSHA standards and the safety of workers.

C. The contractor shall protect the landscape impacted by his work and shall implement safe work practices at ground and elevated work levels. The building will be opened for NPS employees during the project.

D. The Contractor shall install and maintain scaffolding, parking, signs, barricades, fences, lights, tapes, tarps, screens, ground covers, and other necessary means to protect employees and the public from his work activities, as approved by the COR.

1. 11 SPECIAL CONDITIONS

A. The Contractor shall stage and coordinate his operations within the confines of the contract work limits.

B. The Contractor shall perform work during normal daytime work hours between 8:00 AM and 4:30 PM Monday through Friday. No work shall be performed on Federal Holidays or weekends unless approved in advance by the Contracting Officer.

C. The Contractor shall provide and maintain all site protections to prevent any damages or adverse affects to adjacent properties outside the confines of the contract work limits. If any such damages occur, it will be the Contractor's responsibility to make all repairs.

D. The Contractor's storage of materials and parking shall be limited to areas approved by the Contracting Officer.

E. The Park public restrooms will be available for the Contractor's use.

F. The Park shall provide sources of electrical power and water.

G. The work site shall be cleaned up and debris removed on a daily basis.

H. The Contractor shall be responsible for adhering to all safety regulations, procedures, and the use of personal protective equipment as per OSHA.

J. During project Cleanup and Close-Out the Contractor shall clear the project work limits and site of all debris and staging. The Contractor shall make all landscape repairs necessary to return the site to acceptable condition.

PART 2 PRODUCTS

2.1. GENERAL:

A. Materials shall be manufactured by one of the manufacturers listed herein; or approved equal.

B. Grade and Quality: Materials shall conform to requirements of this Section and shall be new, free from defects, and of recent manufacture.

C. Manufacturer’s Instructions: Comply with material manufacturers’ instructions for use of products (including surface preparation, mixing, applying, drying, etc.).

2.2 MORTAR MATERIALS

A. MORTAR MATERIALS: shall consist of the following:

1. Hydrated Lime ASTM C 207. Type S; Mortar

2. Sand: ASTM C 144: Provide natural sand; of color necessary to produce required mortar color. The sand shall be Fredericksburg Concrete Sand from Shenandoah Sand & Gravel Inc. in Winchester, Virginia; or approved equal.

3. Approved mortar pigments consisting of natural and synthetic iron oxide compounded for mortar mixes.

4. Water: Clean, clear, and potable.

5. White Portland cement.

B. MORTAR MIX: shall be a 1 part White Portland Cement; 1 part Lime; and 6 parts Sand; or approved equal. .

2. 3 STUCCO MATERIALS

A. STUCCO MATERIALS: shall consist of the following:

1. Lime: ASTM C 207, Type S.

2. . Sand Aggregate: ASTM C 144. Color: Provide natural sand; of color necessary to produce required stucco color.

3. Hair or Fiber: Goat or Cattle Hair, or pure manilla fiber, ½” to 2” long, clean, free of dust, dirt, oil, and other impurities.

4. . Water: Clean, clear and potable.

B. STUCCO MIXES: Mix ingredients in proportion as required to obtain desired result

1. Approximately 1 part White Portland Cement; 2 parts Lime; and 5 - 6 parts Sand; or approved equal. .

2.4 PAINT MATERIALS

A. The Park shall provide to the Contractor all cans of paint primers and all cans of paint finish coats for all surfaces to be painted in for the contract.

1. All primers and paints provided shall be Latex B. The Contractor shall furnish all products, materials and tools for proper paint preparations, cleaning, priming, paint coat applications, curing, and protections.

C. Paint colors shall be as provided by the Park.

2.5. SURFACE PREWASH

A. M-1 House Wash as manufactured by JOMAPS6500 Industrial Way, Alpharetta, GA 30004(770) 442-8808, or approved equal.

B. D/2 Architectural Biocide as distributed by Sunshine Makers, 1 800 228-0709, or approved equal.

C. Products and methods as recommended by the paint manufacturer and as approved by the COR.

2.6 DOOR AND WINDOW MATERIALS

A. Wood shall be of Spanish Cedar; solid wood without finger joints or other joints within members, thoroughly seasoned, and kiln-dried to a moisture content not exceeding 8 percent.

B. Wood shall be free from defects or blemishes on surfaces exposed to view that will show after paints and finishes have been applied. Materials that do not comply with specifications for quality and grade, are in any way defective, or are otherwise not in proper condition will be rejected.

C. Back Priming, edge priming, and Preservative treatment shall be used for new wood components after machining.

D. Glass for replacement shall match existing in kind.

E. Adhesives for Dutchman repairs and member replacement shall be resin glue designed for use with wood.

1. West System as manufactured by Gouge on Brothers, Inc., 706 Martin Street, Bay City, Michigan 48706 or approved equivalent.

2. West System 105 Resin and 206 Slow Hardener or approved equivalent.

2.7 WOOD FASTENERS

1. For wood carpentry work the Contactor shall use nails and fasteners which are hot dipped galvanized conforming to ASTM A 153 and non rust.

2.8 DOWNPOUTS

A. New downspouts, elbows, and thimbles shall be round 4 inch diameter hot dipped galvanized steel metal.

B. Connectors at northwest building corner downspout shall be steel drive hangers, hot dipped galvanized, sized for 4 inch diameter downspout, and with shank length sufficient for a 3 inch minimum penetration into the stucco and stone mortar joints.

C. Connectors at southwest corner front porch downspout: Shall be 2 inch wide sheet metal straps, hot dipped galvanized, same material as the downspout and 2 gauges heavier, with length sufficient for wrap around installation D. Fastners: Shall be galvanized steel nails and screws.

E. Strainers: Shall be galvanized steel or stainless steel "basket" style.

2.9 SEALANTS, FILLERS, PRESERVATIVES, AND EPOXIES

A. Products and methods as recommended by the paint manufacturer and as approved by the COR.

B. Products as compatible to wood and metal surfaces, and as approved by the COR.

C. Wood Epoxy System shall be the WEST SYSTEM #105 Epoxy Resin, as manufactured by West System Inc., or approved equal.

2.10 METAL & SCREENS FOR CHIMNEY CAP

A. The ventilator cap for the west elevation chimney on B45.which will match the existing ventilator cap on the chimney of adjacent Building 44 .

1. The materials shall be stainless steel framing, screen, sheet metal, and fastners. .

B. Take field measurements and submit shop drawing sketches for COR review and approval.

C. The new chimney cap will be primed and painted all sides.

2.11 . CLEANING AGENTS

A. Shall be products as recommended by the material manufacturers and as approved by the COR in the Contractor Work Plan.

PART 3 EXECUTION

3.1 STAGING, SCAFFOLDING, AND SITE PROTECTION

A. STAGING AND SCAFFOLDING: The Contractor shall provide, install, and maintain staging and access to building heights which shall meet OSHA standards and shall be installed in approved locations, shall be screened with green or brown tarpaulins, without signage, with access/egress ladders, and with containments to prevent any falls, dangers to the visitors, and to prevent debris and dust contamination.

1. All Staging and Scaffolding shall be secured at the end of each day and at the end of each work week to prevent public access.

2.. Upon completion of work the Contractor shall perform a final cleanup before dismantling and removing staging and scaffolding.

3. The Contractor scaffolding shall allow entry and exit by the COR with all protections necessary.

B. MOBILE EQUIPMENT: The Contractor shall comply with all safety regulations and OSHA when using man lifts, scissors lifts, or other work related platform equipment to access work areas, as approved by the Contracting Officer.

C. SITE PROTECTIONS: The Contractor shall provide temporary signs, barriers, fences, gates, ground cover, and lights as necessary to insure vehicle, visitor, landscape and personnel safety around his work.

D. BUILDING PROTECTIONS: The Contractor shall provide building protections to prevent dust, debris, and damage to windows, doors, porches, and any building elements; and to prevent dust from entering the building or to adversely affect building occupants.

3.2 LEAD BASE PAINT PRECAUTIONS & DISPOSAL

A. During the course of carpentry and painting work the Contractor shall anticipate encountering residues of lead-containing paint, and shall transport and dispose of all removed items containing Lead Base Paint in compliance with all applicable federal, state, and local laws and regulations for identification, removal, labeling, handling, containerization, transportation, and disposal of lead-containing material.

3.3 WOOD WINDOW REPAIRS

A. Craftspeople: Wood window repairs shall be carried out by a steady crew of skilled craftspeople who are thoroughly experienced with materials and methods specified.

B.. Remove elements as required to repair and replace windows according to schedule. Use all care necessary to prevent damage or deterioration of elements remaining in place..

C Provide temporary window protection to fully cover window openings to prevent water entry, human intrusion, dust contamination into the building, and loss of interior temperature controls. .

3.4 WOOD DUTCHMAN REPAIRS

A. General: Provide Dutchman repairs where wood is structurally compromised. Dutchman repairs shall provide continuous smooth surfaces matching planes and profiles of wood members being repaired.

B. Preparation: Neatly cut out existing opening as required to provide a prismatic void. Wherever possible create voids that will provide mechanical attachments as in dovetails. The amount of wood removed should be minimized but the amount should include all damaged wood and extend just past damaged wood to prevent spread of any fungus contained therein. Cut away area will provide ample glue surface.

C. Dutchman: Cut Dutchman to exactly fit void, with exposed portion matching original profile of woodwork and just slightly proud of original surface. Orient grain of Dutchman parallel to grain of element being patched. Where deterioration or loss at end of component requires Dutchman repair, use a diagonal scarf joint for end-to-end joint between Dutchman and remaining portion of component.

D. Installation: Clean glue surfaces with acetone or denatured alcohol. Insert Dutchman using specified adhesive and clamp in place until glue is set. Where clamping is not feasible, use small brads; remove brads and fill holes after adhesive has set.

E. Surfacing: Plane or scrape Dutchman to provide smooth continuous surface coplanar with adjacent wood. Do not damage or alter profile or finish of adjacent wood.

3.5 WOOD COMPONENT REPLACEMENT

A. General: Fabricate new components for any components which are deteriorated in entirety and cannot be repaired with Dutchmen and epoxy. Shop prime and back prime all new components before installation.

B. In kind replacement: Except as specifically indicated otherwise, provide replacement elements of same specie with configurations, profiles, dimensions and joinery et al exactly matching those of existing elements.

C. Machining and Surfacing: Machine and surface all new and replacement wood elements to provide smooth even surfaces without saw marks or plane marks. Wood with surface irregularities, including but not limited to scratches, saw marks, and plane knife marks, visible after finish has been applied will be rejected and shall be replaced with properly finished wood elements at no additional cost.

. 3.6 REMOVAL OF EXISTING STUCCO

A..The Contractor shall remove and discard the existing stucco down to existing stone substrate and to reveal existing stone and the mortar joints.

B. The Contractor shall remove the existing stucco in a careful manner in order to protect the historic stone substrate, the existing stone mortar joints, and limits of the stucco removal at edges and corners of the building.

C. The Contractor shall employ hand tools and small mechanical tools as demonstrated to perform the work without damage to historic fabric and as approved by the COR.

D. According to approved plan, the Contractor shall remove all demolished stucco debris and dispose outside the park.

E. The Contractor shall provide protection where removal of west elevation existing stucco abuts exposed edges of south elevation stucco and north elevation stucco at the southwest and northwest building corners. .

3.7 REPOINT STONE JOINTS

A. Rake Mortar Joints using hand tools and techniques during mortar removal in such a manner as to protect the existing and surrounding stone and joints, and not to damage or chip stone surfaces, edges, and profiles.

1. Remove mortar from joints to depth of 2-1/2 times joint width, but not less than 1/2 inch (13 mm) or not less than that required to expose sound, unweathered mortar.

B. Flush mortar joints by hand methods with water and brush to remove all residues. Power washing shall not be permitted.

C. Point joints with mortar approved by the COR.

D. Point mortar joints with proper preparations; approved mortar mixes; with proper techniques, hand tools, protections, and curing times; and to replicate approved mortar joint mock-ups.

E. Water mist mortar joints during warm weather to prevent curing from happening too quickly.

F. Protect completed work areas until total project is finished and accepted.

3.8 STUCCO QUALITY & MOCKUPS

A. QUALITY ASSURANCE

1. Applicator Qualifications: A firm or individual experienced in applying historic stucco similar in material, design, and extent to those indicated for this Project, whose work has resulted in applications with a record of successful in-service performance.

2. The new stucco shall maintain the vernacular of Harpers Ferry historic stuccos with the light tan cream color affect achieved during the 19/th century from river sand in the mix.

3. Samples of stucco on exiting historic buildings in Harpers Ferry Lower Town, as selected by the COR, shall serve as examples of color and texture for the new restoration stucco on Building 45.

B. . MOCK-UPS:

1. Build mock-ups to demonstrate application techniques and aesthetic effects and set quality standards for materials and execution. Maintain approved mock-ups until Substantial Completion. Remove mock-ups at completion of project.

2. Provide a minimum of three, 4’ by 4’, full-coat finish mock-ups. Allow mock-ups to dry and cure long enough to the point where they show a final color and texture.

3. .Mock-ups should show the 3 part application of scratch coat, brown coat, and finish coat layers at approved thicknesses.

4. Approval of mock-ups does not constitute approval of deviations from the Contract Documents.

3.9 NEW STUCCO APPLICATION:

A. CRAFTS PEOPLE: Mortar, Pointing, and Stucco repairs and restoration shall be carried out by a steady crew of skilled craftspeople who are thoroughly experienced with materials and methods specified.

B. EXTERIOR STUCCO WORK:

1. Apply and cure stucco to match approved mockup with 3 part application of scratch coat, brown coat, and finish coat layers at approved thicknesses, keying methods, and allowing sufficient time for curing between applications.

2. Protect stucco to prevent drying out during curing period. Use procedures required by climatic conditions, including moist curing, providing coverings, and providing barriers to deflect sunlight and wind.

3. Apply stucco when ambient temperature is greater than 40 deg F(4.4 deg C).

4. Blend stucco applications into corners of the building to key into existing stucco on south and north elevations.

3.10 SEALANTS, FILLERS, AND EPOXIES:

A. SEALANTS AND FILLERS: The Contractor shall apply approved sealants and fillers to eliminate holes, to cover nail heads, to fill sheet metal overlap voids, and to cover openings to prevent water intrusion.

B. EPOXY TREATMENTS: The contractor shall apply epoxy glazing and treatments to consolidate soft wood fiber surfaces, to replace small portions of wood rot, and to consolidate weak wood fabric.

1. Follow manufacturer's instructions for prep, application, and curing of epoxies and fillers on wood surfaces.

C. Do not prime or paint until sealant, filler, and epoxy treated areas are properly dried, sanded smooth, and are clean.

3.11. INSPECTION BEFORE PAINTING

A. Examine areas and conditions under which painting work is to be applied for conditions detrimental to proper and timely completion of work. Do not proceed with work until unsatisfactory conditions have been corrected.

B. Starting of painting work will be construed as acceptance of surfaces and conditions within any particular area.

C. Do not paint over dirt, rust, scale, grease, moisture, ivy, mildews, fungi, cobwebs, scuffed surfaces and adverse conditions within any particular area. These must be cleaned, removed, and washed away by approved surface cleaning and preparation.

3.12 PREWASH AND SURFACES PREPARATION

A. Perform preparation and cleaning procedures in accordance with paint manufacturer's instructions and as per the approved cleaning procedures for an overall pressure wash of the building exterior.

B. Prewash: Apply wash and cleaning methods carefully as to not damage or remove existing or historic fabric for painting.

C. Include biocide and fungicide treatments in the prewash to remove unseen adverse bacterial growth on the building surfaces.

D. Allow sufficient time for drying and proper conditions after cleaning before commencing other prep work, priming, and painting.

E. Remove any cracked or peeling paint layers that are deteriorating down to bare wood. Sand smooth and clean before priming and painting.

F. Complete epoxy and filler repairs before priming and painting.

G. Clean all surfaces to be painted before applying paint or surface treatments.

3.13 PAINT APPLICATION:

A. General: Apply primers and finish paint coats in accordance with manufacturer's directions. Use applicators and techniques best suited for substrate and type of material being applied.

1. Use hand brush application techniques to maintain the historic painted exterior surface textures and appearance.

B. Prime and finish exterior doors on tops, bottoms and side edges the same as exterior faces unless otherwise indicated.

C. TYPICAL PAINT APPLICATION - Shall be 1 prime coat and 2 finish coats of paint.

D. Apply paints only when temperature of surfaces to be painted and surrounding air temperatures are between 45oF. (7oC.) and 95oF. (35oC.), unless otherwise permitted by paint manufacturer's printed instructions.

E. Allow sufficient time between successive coatings to permit proper drying.

F Daily Clean Up: During progress of work, remove from site discarded paint materials, rubbish, cans and rags at end of each work day.

G. Paint Spill Cleanup:

1. Upon completion of painting work, clean window glass and other paint spattered surfaces.

2. Remove spattered paint by proper methods of washing and scraping, using care not to scratch or otherwise damage finished surfaces.

H. Protection: Protect work of other trades whether to be painted or not, against damage by painting and finishing work.

1. Correct any damage by cleaning, repairing, or replacing and repainting as acceptable to Contracting Officer.

I. Paint Wood Surfaces: Wash, Clean, Scrape, Prep, Prime and Paint the 10 windows, 2 doors/doorways, 50 linear feet of gable rake boards and cornice/soffit returns, the rear porch deck, underside porch deck, steps, posts, and rails on the west and north elevations for an approximate total of 2000sf of painting.

J. Paint Metal Surfaces: All downspouts, drive hangers, straps, connections into gutters and related metal surfaces shall be painted. Approximately 70sf of metal surface painting. .

1. Pre Clean all metal surfaces to remove oils and dirt.

2. Brush apply 1 coat of primer and 2 finish coats to paint the downspout systems and related hangers and straps.

3. Color will be black to match existing gutter systems on the building roof.

3.14 GUTTER AND DOWNSPOUTS:

A. Remove and discard the existing Y configuration of 90LF of downspouts, the collector, and drive hangers in the stucco and stone wall of the west elevation.

1. Cap the existing downspout boot in the ground as approved by the COR

B. Install 2 new 4 inch diameter downspouts from the roof metal gutters as straight vertical drops to the existing ground level stone gutters. Install 1 downspout at the building northwest corner and 1 at the southwest corner of the front porch for a combined total of approximately 50LF, with appropriate strainers, elbows, hangers, connections, and flow direction into stone gutters.

C. Fabricate the new downspouts to the contour of vertical water down flow, with connections, drive hangers, and straps. Elbows and connections shall be mitred by soldering or welding with lap inside the lower. May require Hot Permit.

D. Provide and install thimbles and strainers at the downspout connections to gutters.

E. Inspect all runs and all connections of new downspouts to existing gutters and to corners of the building.

1. New downspouts shall have tight fits into gutter openings and thimbles.

2. Northwest Downspout:- Install with drive hangers into stucco and masonry at the northwest corner to support every elbow and spaced every 5 feet on center along the vertical run. Drive Hangers shall be driven into the stone masonry joints at least 3” deep.

3. Southwest Downspout: Install with metal strap hangers fastened into the wood corner posts of the porch to support every elbow and spaced every 5 feet on center along the vertical run.

D. Demonstrate positive slopes and drainage for COR approval.

3.15 FABRICATE AND INSTALL VENTILATOR CAP ON THE WEST CHIMNEY

A. Examine conditions and take measurements on the Building 44 chimney with the existing sheet metal screened ventilator cap. The Building 44 chimney cap will be a design basis for the new Building 45 chimney cap.

B. Examine conditions and take measurements on the Building 45 west elevation chimney.

C. As per approved shop drawings, fabricate, provide, and install a ventilator cap on top of the west elevation roof chimney of Building 45.to match the existing one on the Building 44 chimney.

D. The installation and fastening of the new ventilator cap on the Building 45 chimney shall be similar to the chimney on Building 44.and shall be strong enough to resist winds and adverse weather conditions.

E. The ventilator cap shall be cleaned, prepped, primed and painted black on all surfaces. .

3.16 DAILY CLEANUP AND PROTECTION

A. Clean Up: During progress of work, remove from site discarded paint materials, rubbish, cans and rags at end of each work day. Upon completion of painting work, clean window glass and other paint spattered surfaces. Remove spattered paint by proper methods of washing and scraping, using care not to scratch or otherwise damage finished surfaces.

B. Protect paint work and work of other trades whether to be painted or not, against damage by painting and finishing work. Correct any damage by cleaning, repairing, or replacing and repainting as acceptable to Contracting Officer.

C. Provide generic "Wet Paint" signs (no advertising) as required to protect newly painted finishes. Remove temporary protective wrappings provided by others for protection of their work after completion of painting operations.

D. At the completion of work of other trades, touch up and restore all damaged or defaced painted surfaces.

3.17 PERSONNEL PROTECTIONS

A. The Contractor shall provide protections for personnel against dust inhalation, against debris contamination, and as appropriate for any phase of the contract work as per OSHA.

B. The Contactor shall enforce the use of proper personnel protection and safety as per OSHA.

3.18 PROTECTION OF WORK AND BUILDING:

A. The Contractor shall protect all work against damage.

B. The Contractor shall correct any damage by cleaning, repairing, or replacing as acceptable to the Contracting Officer.

C. The Contractor shall prevent dust and debris from contaminating the building and from entering the building for the duration of the project work.

3.19 FINAL PROJECT SITE CLEANUP:

A. Upon the completion of general work, the Contractor shall perform a final cleaning of the building exterior within the project contract limits on the west and north elevations to remove construction stains and to the satisfaction of the COR.

B. The Contractor shall clear the project work limits and sites of all debris, materials, equipment, scaffolding, vehicles, traffic controls, signs and staging.

C The Contractor shall make all necessary repairs to the buildings and landscape where damages are caused by work.

PART 4 WINDOW REPAIR SCHEDULE

The Park will provide all paint for primers and finish coat applications.

The existing window wood fabric may contain residues of Lead Base Paint.

All windows included in Prewash and Painting.

4.1 Window 101 - west elevation

1. Remove and replace 2 side rails of the bottom window sash.

2. Remove and replace 2 parting beads of the bottom window sash.

2. Reglaze all 10 window sash glass panes as necessary.

3. Scrape. clean, prep. prime, and paint all exterior window surfaces and all surfaces of replacement elements.

4.2 Window 102 - west elevation

1. Remove and replace rotten window sill.

2. Reglaze all 10 window sash glass panes as necessary.

3. Scrape. clean, prep. prime, and paint all exterior window surfaces and all surfaces of replacement elements.

4.3 Window 201 - west elevation.

1. Remove and replace rotten window sill.

2. Remove and replace 1 left rail of bottom window sash.

3. Reglaze all 10 window sash glass panes as necessary.

3. Scrape. clean, prep. prime, and paint all exterior window surfaces and all surfaces of replacement elements.

4.4 Window 202 - west elevation

1. Remove and replace 2 side rails of the bottom window sash.

3. Scrape. clean, prep. prime, and paint all exterior window surfaces and all surfaces of replacement elements.

4.5. Window 203 - north elevation

1. Reglaze all 10 window sash glass panes as necessary.

2. Scrape. clean, prep. prime, and paint all exterior window surfaces.

4.6 Window 204 - north elevation

4.7 Window 205 - north elevation

1. Replace 1 broken glass pane on the bottom window sash.

3. Scrape. clean, prep. prime, and paint all exterior window surfaces.

4.8 Window 206 - north elevation

1. Reglaze all 4 window glass panes as necessary.

2. Scrape. clean, prep. prime, and paint all exterior window surfaces.

4.9 Window 207 - north elevation

4.10 Window 208 - north elevation

1. Remove and replace 2 side rails of the bottom window sash.

3. Scrape. clean, prep. prime, and paint all exterior window surfaces and all surfaces of replacement elements.

PART 5- CLOSEOUT

5.1 PUNCHLIST INSPECTION: The Contractor shall attend a prefinal inspection meeting with the Contracting Officer and COR and shall create and submit a Punch List of work items outstanding.

5.2 FINAL INSPECTION: The Contractor shall attend a formal Final Inspection with the COR and Contracting Officer.

5.3 WARRANTY: The Contractor shall provide the Contracting Officer with 3 copies of a 1 Year Warranty to guarantee workmanship.

5.4 PROJECT RECORD: The Contractor shall provide the COR and Contracting Officer with an organized notebook with final hardcopies of paperwork, correspondence, and submittals for the project file.