Boarding House SOW Rev.1.docx

Scope of Work

Re-roofing, Window Repair/Replacement and Associated Carpentry Repairs for the Boarding House

Hopewell Furnace National Historic Site (HOFU) Elverson, PA

Prepared by: James Moore Date: 21 April 2020

1) Background

a) This Scope of Work (SOW) is for the Boarding House located in Hopewell Furnace National Historic Site, Elverson, Pennsylvania.

b) The existing roof has come to the end of its serviceable life and is in need of replacement. The windows are showing deterioration and some of the sashes are of incorrect design for the period of construction and need to be replaced.

c) This project consists of the Base bid and one (1) option. The option(s) shall be accepted or rejected as part of the work at the sole discretion of the National Park Service, and may be accepted individually or in any combination up to the ninetieth day of the contract should funding become available.

d) The paints and washes on the woodwork and masonry of the building, as well as other finishes and materials, may contain lead and asbestos. The contractor shall identify all areas that will require disturbance as part of each portion of this project and test these areas for the existence of lead and asbestos prior to any disturbance.

e) The base bid includes replacement of all roofing on the building and repairs and replacement of windows throughout the building as well as all associated carpentry repairs to the roof and windows.

i) Bid Option 1 includes making the necessary repairs to the exterior masonry to ensure the substrate is suitable to receive the new finish and applying the new finish to the exterior walls.

f) Attachment(s) provided at the end of this document

i) Attachment A: NPS Daily Progress Report Form

ii) Attachment B: Submittal procedures and Submittal list

iii) Attachment C: Project location and layout

2) Scope

a) Contractor is responsible to field verify all estimated quantities

i) It is STRONGLY encouraged that each bidder visits the site and fully acquaints themselves with the problems and conditions they will encounter if they become the successful bidder. Since absence from visiting the project will not be considered as an excuse for misunderstanding of the requirements of the contract, bidders are strongly encouraged to visit the park and attend the pre-bid site visit(s).

b) This contract requires the independent Contractor, functioning not as an agent of the Government, to provide all personnel, facilities, tools, labor, equipment, supervision, transportation (except as otherwise specified in the Contract), correspondence, supplies, staging and materials necessary to complete the work of the base bid and option(s):

i) The Base Bid consists of the removal of the existing wood shingle roof and all associated roof flashing and sheet metal work and the installation of a new wood shingle roof with associated roof flashing and sheet metal work as required by existing conditions to provide a weather tight roofing system. As part of the base bid the contractor shall also be responsible for any required carpentry repairs as outlined below or as required for the installation of a sound weather tight roofing system. All new wood used in the work shall be primed on all sides including the priming of field cuts. Exposed wood is to be finish painted the color of similar adjacent wood surfaces, verify color with the COR prior to painting.

ii) The base bid also includes the repair or replacement of the windows and their components as described in this scope of work. This work includes the replacement of eight (8) incorrect window sashes with their period correct sashes as identified in this scope of work and painting of all of the windows and their components. The repair of the masonry around the windows is also included in the window repair work

iii) Bid option one consists of repairing the exterior masonry, to include the chimneys, and repainting the exterior masonry. If accepted, the bid option will add an additional 30 days to the period of performance.

3) Objectives

a) The goals of this project are to A) replace and repair the roof surfaces and associated components to ensure full functionality and water tight conditions, and B) Repair all windows as necessary to eliminate deterioration and make the windows fully functional, and C) Remove window sashes that are not period correct and replace with windows of period correct design.

b) The goal of Bid Option 1 is to provide a weather tight exterior masonry surface through repairs to the masonry and reapplication of the finish.

4) Tasks and Requirements

a) General

i) The contractor shall be familiar with the requirements stated in this scope of work and meet with the park staff to gain a clear understanding of the design and functional requirements of work desired.

ii) All work shall be by qualified workers skilled in their trade. Substandard, defective and/or inferior work shall be corrected or replaced at the Contractor’s sole expense.

iii) The contractor will confirm existing site conditions and measurements. Drawings, shop drawings, material samples and product submittals related to the proposed work will be prepared and submitted the NPS. NPS approval will be obtained prior to ordering materials. Work will be executed as described in the approved drawings and submittals.

iv) Only the work indicated or required by this Scope of Work (SOW), and under contract shall be carried out. No additional work will be started without a written description of the work, a written statement of cost, “field verification” by the COR and final approval by the CO in writing. In the written description of the proposed additional work there shall be a description of the proposed work, a clearly defined description of the area where the work will be performed including pictures of the area and the contract number. Pictures shall show the condition of the area of proposed work at the time of the proposal. Pictures of the area of approved additional work will be required at each stage of the work as outlined and required elsewhere in this SOW. Additional work is defined as work that is not specifically included under the base bid and any accepted options for the work.

v) If any materials encountered during the deconstruction/demolition or construction phase are found to contain lead, asbestos, PCBs, or other harmful substances, they are to be handled and removed or abated in accordance with local, state, and federal laws and requirements concerning hazardous waste.

vi) Lead paint is present in the building. Finishes throughout the building may contain lead and abatement of the lead hazard, for work associated with this project, by a qualified contractor is part of this contract. However, the extent of lead presence is not known. Contractor shall identify all areas that need to be disrupted before construction and demolition and perform lead testing. Test samples shall be taken from these areas by a qualified professional to be tested in the laboratory for lead presence.

vii) The contractor shall complete all required regulatory notifications, if/when applicable

viii) The General Contractor and the painting contractor shall hold a valid Lead Renovator’s License issued by the Commonwealth of Pennsylvania. This project requires all workers that will be disturbing or handling materials containing lead to have all required training, licensing and certifications.

ix) Contractor(s) and their employees shall not conduct work with or on hazardous materials without proper training, certifications, protective equipment, and required notifications.

x) Any painted surface that has lead content should not be sanded, demolished or disturbed without the proper engineering controls and work methods, as spelled out under OSHA’s 29 CFR Part 1926.62 Lead Exposure in Construction, Interim Rule. Improper disturbance of any paint with lead content can cause lead to become airborne.

xi) Regardless of the actual lead or asbestos content of the existing paints, washes or other finishes on the structure, Proper procedures are required to contain and control all the paint dust, chips, flakes and fibers that are created or released during the work to areas requiring disturbance as part of this scope of work.

(1) This will include, as a minimum, the use of plastic sheeting on the ground under the work areas to catch such debris. Positive lead test shall require all horizontal surfaces where lead paint flakes and dust may collect to be HEPA vacuumed and wet wiped to remove loose debris. Loose paint flakes and dust shall be collected, containerized and disposed of in accordance with state and federal hazardous waste regulations.

xii) Handling and disposal of hazardous materials, to include but not limited to lead, shall follow the approved lead safety plan as well as all federal, state and local laws, codes and requirements.

xiii) Whenever it is necessary to repair, remove, abate or otherwise disturb areas containing lead, safe work practices and personal protective equipment must be used to minimize the exposure to workers, occupants and the public. Repair, removal and abatement of hazardous materials shall be conducted in accordance with the requirements of 29 CFR 1926.1101 and all other applicable federal, state, and local regulations and the requirements set forth in this scope of work.

xiv) Regulated areas shall be established whenever work is being conducted on items containing hazardous materials to control access to the work site or hazard area. Regulated areas will be demarcated using barriers or barricades, critical barriers, or negative pressure enclosures.

xv) The abatement/demolition contractor for any portion of this scope shall not rely upon the accuracy of existing conditions noted on any drawings, but shall make a personal examination and accept all existing conditions unless an item is "concealed" by solid physical barriers and could not have been discovered during a diligent inspection of the work site. If conditions do exist that may be "concealed" and are not described herein to be incorporated as part of the work and cannot be accessed without performing some demolition, the abatement contractor should bring it to the attention of the Owner and the Environmental Consultant for clarification prior to submitting a bid. The preparation and submission of the bid shall indicate that the contractor/bidder has personally examined the work area and existing and anticipated conditions and accepts the building and work area "AS IS."

xvi) Quantities of material(s) and areas referenced for this project are presented to assist the contractor/bidder in the preparation of a bid and are not intended to limit the scope of work. The contractor/bidder is responsible for confirming all quantities and locations.

xvii) Contractor(s) shall be licensed in respective jurisdictions. Contractor(s) is solely responsible for measuring and verifying in field, prior to bidding, all existing dimensions, sizes, areas and conditions. Also prior to bidding, Contractor(s) shall investigate and verify nature and extent of work necessary and advise NPS in writing of any discrepancies and/or omissions in requirements.

xviii) Contractor shall be responsible for securing any required permits from the state, county or local offices as well as making all required notifications for hazardous material work.

xix) Submit samples, product manufacturer’s information and shop drawings as applicable for NPS review and approval, allowing sufficient time in project schedule for Technical and Compliance reviews. Upon approval, provide and install new replacements, repairs and related work as applicable.

xx) The contractor shall develop and maintain an effective quality control program to ensure services are performed in accordance with this SOW

xxi) Any on site storage of materials shall be coordinated with the COR. Store and protect all materials in accordance with manufacturer’s requirements.

xxii) Erect, establish and maintain safety & security barricades, scaffolding, shoring and ladders sufficient to secure the structures and sites during the course of work and safely perform the work in accordance with all regulations.

xxiii) The Contractor shall provide proper safety equipment to employees and ensure a safe work environment for employees, the general public, and Government employees at all times. The Contractor shall work to ensure free, unobstructed, and safe access to and about work areas.

xxiv) Protect, and do not disturb, all existing historic fabric including masonry and walks. The Contractor shall take the measures needed to protect artifacts, historic furnishings, and fabric that are adjacent to work areas. Scaffolding and ladders shall be erected so that no damage is done.

xxv) Any activities that produce flames or sparks will require the submission of a hot work permit to the park’s safety coordinator. Copies of this form will be provided to the contractor and shall be submitted 72 hours prior to the activity.

xxvi) All excavations or digging shall require prior notification of 5 business days to schedule the archeologist.

xxvii) No excavations shall be left open overnight. Open holes and trenches are to be covered and the area is to be surrounded with construction fencing.

xxviii) Preservation of Natural and Cultural Features: Confine all operations to work limits of the project. Prevent damage to all natural and cultural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants with native seed and/or plants, repairing or replacing materials in-kind if necessary, all at the direction of the CO and at no additional expense to the Government. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with Contracting Officer Representative (COR) and remove only roots and branches that interfere with construction and are approved by the COR.

xxix) Restoration of all ground and areas disturbed in execution of this contract shall be fully restored to original condition, including all grading, seeding (with Park approved native seed mixture), and mulching. Perennial ryegrass is not permitted. Any completed trail surface disturbed as part of this contract shall be restored to original condition.

xxx) Archeological Resources: If any evidence of prehistoric, historic, and recent 20th century artifacts, including charcoal, human bones, ash, fire rocks, and building materials that indicate the presence of past human occupation is encountered during construction, all work in that area shall stop immediately and the discovery shall be reported to the Contracting Officer Representative. The contractor shall coordinate with the parks Archeologist to be on site during excavation(s).

xxxi) Any damage resulting from Contractor’s operation shall be immediately brought to the attention of the Contracting Officer’s Representative.

xxxii) Coordinate all work with prevailing weather conditions to Park’s satisfaction.

xxxiii) The Contractor shall take all necessary and reasonable measures to keep these sites clean of trash and debris. Work areas shall be cleaned immediately as work in that area is completed, and before moving to a new work site. Place all trash and debris in approved containers, remove, and properly dispose of trash off site daily. Keep work site(s) clean on a daily basis. Any materials that can be recycled must be recycled.

xxxiv) The Contractor shall remove all materials and equipment, including ladders and scaffolding, from the site(s) at the completion of each day’s operations unless otherwise approved by the Contracting Officer’s Representative.

xxxv) At the completion of all work, the Contractor shall remove all equipment, tools, surplus materials, and shall clean all work areas. The Contractor shall be responsible for providing all tools, supplies, materials, and labor necessary for cleanup.

xxxvi) Demolition materials shall become the property of the Contractor. Dispose of all removed materials in accordance with local regulation and best practices. Lead- and asbestos-containing materials are classified as RCRA hazardous waste and shall be disposed of in accordance with local, state, and federal regulations. Utilize the Park’s EPA identification number, and submit copies of all hazardous waste manifests, if any. Protections from lead and asbestos exposure hazards shall be provided in accordance with applicable OSHA standards.

xxxvii) Hauling Restrictions: Comply with all legal load restrictions in the hauling of materials. Load restrictions on park roads are identical to the state load restrictions with such additional regulations as may be imposed by the Park Superintendent. Information regarding rules and regulations for vehicular traffic on park roads may be obtained from the Office of the Park Superintendent. A special permit will not relieve Contractor of liability for damage which may result from moving of equipment.

xxxviii) Existing Utilities: Contractor shall be permitted to use existing electric and water services located on the site. Contractor shall NOT be permitted to use existing toilet facilities; Contractor shall provide and pay for on-site portable restrooms and disposal fees for waste at each location.

xxxix) The contractor shall be responsible for the documentation of all efforts to include design drawings, shop drawings, product submittals, licensing agreements, quality control documents, material testing results, permitting, and all other documentation associated with the project.

xl) Any design drawings or shop drawings of the proposed work will be prepared using an electronic drawing program such as AutoCAD or similar. Drawings will be scaled and contain detail sufficient to communicate the intent of the designer and permit a thorough and detailed on-site inspection of the work by NPS inspectors. Hand drawn sketches of the proposed work are not acceptable shop drawings and will be rejected without review. Product submittals may be cut sheets but must clearly indicate and highlight the specific item to be used. Product submittals that do not indicate and highlight the specific item to be approved will be rejected without review.

xli) All work, including those elements that are typically hidden from normal view or inspection, shall be installed in a neat and workmanlike manner.

xlii) Upon completion of all work and demobilization of equipment and materials the contractor shall remove all construction associated debris and equipment from the work site, repair any damage to adjacent structures and reseed damaged lawn areas affected by the work.

xliii) Codes, Regulations and Standards

(1) The NPS requires that all work be performed to all applicable codes, regulations and standards. These codes include, but are not limited to:

(a) International Building Code

(b) Secretary of the Interior’s Standards for the Treatment of Historic Properties

(c) 40 CFR 745.61-339, U.S. Environmental Protection Agency-LEAD-BASED PAINT POISONING PREVENTION IN CERTAIN RESIDENTIAL STRUCTURES

(d) 29 CFR 1926.62, U.S. Department of Labor, OSHA-SAFETY AND HEALTH REGULATION FOR CONSTRUCTION, LEAD

(e) Title 35 Pennsylvania Statue Chapter 203, Department of Labor—LEAD-BASE PAINT OCCUPATION ACCREDITATION AND CERTIFICATION

(f) Title 25 Pennsylvania Consolidated Statue Chapters 260-270, Department of Environmental Protection—HAZARDOUS WASTE

(g) 49 CFR Part 171 and 172

(h) USEPA 40.CFR Part 61

(i) 40 CFR 745 – Lead; Identification of Dangerous Levels of Lead

(j) Commonwealth of PA Code 34 Section 203 – Lead-Based Paint Occupation Accreditation and Certification Regulations

(k) 29 CFR 1910.1200 Hazard Communications

b) Base Bid (Roofing and Windows):

i) Roofing: The work includes removal of the existing wood shingle roof and all associated roof flashing and sheet metal work and the installation of a new wood shingle roof with associated roof flashing and sheet metal work and any carpentry repairs required for the installation of a sound and weathertight roofing system. Repairs include but are not limited to the demolition or removal and replacement of rotted or unsound roof deck, sheathing or shingle lath of the Boarding House, Hopewell Furnace National Historical Site. Also included are repairs to the rake and fascia boards and trim or woodwork to which the roofing and/or flashing are attached.

(1) Provide all material, labor and equipment required to install a wood shingle roof on the roofs of the Boarding House, Including the demolition of the existing wood shingle roofs. During demolition do not remove more of the existing roofing than can be reroofed or covered in a day. Protect the building and its contents from damage from rain or other precipitation.

(2) Materials:

(a) Shingles:

(i) Premium Grade, Certi-Sawn, Western Red Cedar 24” length x ½” at butt x 1/8” at head, 100% heart, 100% edge grain.

(b) Nails:

(i) Copper flat head 4d

(c) Shingle Breather:

(i) Nylon three-dimensional matrix in roll form meeting ASTM C 165-00, ASTM D 6818, ASTM E 84, Color: Black

(d) Self-Adhering Sheet Membrane Roof Underlayment:

(i) Cold applied, self-adhering, self-sealing sheet membrane, 40 mil minimum, ASTM D412, ASTM D461, ASTM D903, ASTM D1970.

(e) Roofer’s cement:

(i) FS SS-C-153 trowel consistency

(3) Submit samples of shingles and accessory items for approval as to quality and grade

(4) Except as otherwise noted, shown or specified herein, application procedures shall conform to the instructions of the Cedar Shake and Shingle Bureau. After demolition/removal of the existing wood shingle roof, review the roofing substrate with the COR prior to starting the new roof installation.

(5) After repairs are completed to the roof structure, deck and shingle lath, begin the installation of the wood shingle roof by installing waterproof membranes and other accessories as specified, shown or required.

(a) At the eave where the gaps between the shingle laths have been infilled, cover the entire surface with a self-adhering sheet membrane roof underlayment. Beginning at the eave lay the membrane shingle style to 4’0” up the slope of the roof. Lap joints where required a minimum of 6”.

(b) Lay self-adhering, self-sealing sheet membrane in valleys. Use minimum number of sheets to form valleys, lap joints shingle style.

(c) Install shingle breather matrix over all surfaces covered with self-adhering, self-sealing sheet membrane.

(d) Install metal flashing except for flashing intended to be laid up with the shingle installation.

(6) Layout the shingle coursing prior to starting to avoid a short course to the weather at the ridge. At eave, begin with a double starter course, bottom shingle to be 16”, top shingles to be 24”. Continue with each course, laying the shingles in uniform courses a minimum of 7 - 1/2 “to a maximum of 8”to the weather until the ridge is reached. Omit interleafed roofing felts between shingle courses. At every 8th course of shingles in the field of the roof install a 3” wide continuous strip of copper sheet metal with ½” exposed to the weather. Use the minimum number of copper nails to securely tack copper strips in place. At 3 courses below ridge install water and ice shield material continuous along the ridge so that it extends down the slope an equal distance on either side of the ridge, lapping over the 4th course of shingles below the ridge so that it will be fully concealed by the remaining courses of shingles when installed. Do not allow joints between adjacent shingles to align with joints between shingles of the course above or below, minimum offset 1-1/2”. Shingle width shall vary between 3-1/2” and 6”.

(7) Shingles shall be neatly laid with a 1/8” space between adjacent shingles with best face up. Use standard gauge to ensure uniform spacing between shingles. Nails shall be driven up but not tight. Each shingle shall have 2 nails. No shingle shall exceed 6” in width; work out end of courses to allow for proper offset of joints with the course below. Coursing shall be kept straight and carefully fitted up to end walls and around openings, pipes or other obstructions. Cuts shall be neat and snuggly fitted. Where required, flashing shall be laid up in each shingle course with cap flashing stepped.

(8) At the ridge the last course of shingles on the west and north slopes of the roof shall extend 3” above the ridge. Trim lower courses to fit to the ridge alternating laps so that the last course shall have the shingle on the west slope lapping over the head of the shingle of the east slope. Install continuous copper ridge flashing under the next to the last course of shingles below the ridge. Ridge flashing shall extend ½” below the butt end of the covering shingles.

(9) The roofing subcontractor shall provide tarps as required to protect the building and its contents from damage by water intrusion during inclement weather. Do not open up more roof area than can be covered by the tarps available on site. At the end of each day areas where demolition of the existing roofing has occurred shall be re-roofed or covered to prevent the intrusion of water. Tarps shall be tied down and secured to prevent displacement by the wind.

(10) Flashing and Sheet Metal:

(a) Provide all labor, equipment and materials required for the fabrication and installation of metal flashings and roof accessories as indicated, specified or required including all incidental items normally required for the installation and conditions encountered.

(b) Reference specification SMACNA

(c) No metal flashing or any portion thereof shall be covered with any material until the COR has inspected the installation. If any material is covered before such inspection it shall be uncovered, and if damaged replaced at the contractor’s sole expense. Provide 72 hour notice prior to the work for the COR to schedule his inspection.

(d) The following types of failure will be adjudged defective work and shall be corrected immediately. Once corrective measures have begun they shall continue to a satisfactory conclusion regardless of the guarantee period.

(i) Leaking, failure to stay in place.

(ii) Undue expansion; uplift; deformation; loosening; and splitting seams.

(e) Materials:

Materials shall conform to the following:

(i) Metalwork:

1. 16oz. terne coated copper

(ii) Solder:

1. 50% tin, 50% pig lead, ASTM B-152

(iii) Caulking:

1. Caulk: ASTM C-920 Type M or S, Grade NS Class 25, Exposure Use NT, Substrate Use O, Single or multi component silicone, gun consistency, non-sagging type. Color selected from the manufacturer’s standard colors. Up to two colors to be selected for the project.

(f) Workmanship:

(i) Pre-form flashing on metal breaks.

(ii) Provide concealed metal flashing set with shingle courses with stepped cap flashing at chimneys and parapet wall. Remove the existing cap flashing and stucco cover as part of demolition, clean out existing riglets or cut out mortar for new riglets in masonry of the chimney approximately 8” – 12” above the roof deck/lath. New stepped metal cap flashings shall be concealed at chimneys as detailed with stucco cover. Extend metal a minimum of 6” under shingles and 6” under the new stepped cap flashing. Secure cap flashing in riglets and caulk. Conceal cap flashing with new stucco as shown allow stucco to cure for min. of 15 days and paint to match the existing whitewashed masonry.

(iii) At ridges layup new copper ridge flashing.

(11) Basis of Bid Quantities for roof related work:

(a) The contractor shall include the following quantities of work in his base bid in addition to the re-roofing of the structure with new wood shingles with board sheathing or shingle lath and flashing and sheet metal work as specified or required. Before beginning the installation work, but after the removal of the existing shingles and flashing, review the uncovered conditions and verify the quantity of work with the COR.

(i) Demolish or remove the existing roof sheathing or shingle lath where the existing roof sheathing or shingle lath is rotted or unsound. Replace with new board sheathing or shingle lath sized to match the existing installation and the approximate width of the existing wood boards or shingle lath and matched to the approximate thickness of the existing (assumed thickness 1 inch) with minimal shimming. Sheathing boards over 11 inch in width may be replaced with multiple boards to match the original width. In such cases the contractor shall use the minimum number of bards required to match the width. Minimum board or lath removal/replacement is the span of three rafters or supports.

Basis of bid lath replacement quantity – 60 linear feet

(ii) Inspect the entire fascia and rake boards associated with the roof. Perform minor repairs by patching and filling holes, filling splits, re-securing loose sections or pieces and paint with two coats of exterior paint to match the existing sheen and color. Replace deteriorated, damaged or rotten sections of the existing rake and fascia boards with new rake and fascia boards matching the existing in size shape and profile. Construction shall match the existing in terms of built up sections/assemblies or pieces, no glued up sections or pieces will be allowed as replacements for solid wood sections or pieces. Include one coat of prime paint on all surfaces and two coats of exterior semi-gloss paint on exposed surfaces. Match the exterior paint to the existing color of similar or surrounding painted wood surfaces.

Basis of bid replacement quantity – 20 linear feet

ii) Windows General:

(1) Provide all labor, materials and equipment required for the removal, repair, cleaning, glazing and reinstallation of the existing wood window sash and casements and the repair of the existing wood frames, sills and casings including miscellaneous wood trim, stops and parting beads as scheduled, indicated or required. Where indicated provide new replacement sashes and casements. Details of construction for repair shall match the existing windows where they are to remain for size, shape and profiles of moldings and location and size of mortices. The location, number, size and type of pegs or pins shall match the existing where they are to remain. Where existing sashes are being replaced with period correct sashes, they shall match the details of construction in size, shape and profiles of moldings as well as the location, number and size of pegs or pins as identified by their period correct sashes. Provide new hardware as scheduled, indicated or required for conditions encountered. Where practical or no replacement is available and where approved by the COR existing hardware may be reused.

(2) Rehang the lower sashes throughout and include new sash cord and pulleys. Reuse the existing sash weights. Provide blocks for the upper sash if required to keep them in a fixed position.

(3) Provide and install weather stripping in all windows.

(4) The contractor shall submit shop drawings for new wood sashes detailing methods of construction and size.

(5) Submit samples of glass, and each wood molding type, smallest practical sizes and quantities, before placing on the job.

(6) Materials:

Materials shall conform to the following:

(a) Framing materials:

(i) Wood frames and sashes shall match existing frame and sash materials

(ii) Exterior trim shall match existing trim material

(iii) Fasteners shall be nonmagnetic stainless steel warranted by the manufacturer to be noncorrosive and compatible with wood elements of the window units.

(b) Glazing materials:

(i) Float glass: ASTM C1036 Type 1, 3/16” clear, Type 1 Class 1 Quality Q3

(ii) Glazing compound: Interior/exterior premixed oil-based glazing compound. Formulated for wood, Color – white.

(c) Sash cords:

(i) Dacron, braided cord, ¼” diameter as required by length.

(d) Hardware and accessories

(i) Locks and latches shall match existing.

(ii) Sash lifts shall match existing.

(iii) Sash pulleys shall match existing.

(iv) Weather stripping: Metal spring from weather stripping brass or bronze, nailed at meeting rail top and bottom of all double hung sash. Neoprene gaskets for condition encountered, self-adhesive.

(7) Each sash shall be marked as to its original window opening prior to removal for repair/refurbishment. After repair/refurbishment each sash shall be reinstalled in its original location

(8) Sash shall be removed form the site for cleaning, repair, repainting and reglazing. Paint shall be stripped, and existing glazing removed, broken, rotten or damaged rails, stiles or muntins shall be repaired or replaced. Repaired wood sashes shall be primed, painted and glazed. Replace any broken, cracked or scratched glass.

(9) New sashes shall match that which they replace in size, details of construction and number of lites. Rails, stiles and muntins of the replacement sash shall match those of the sash they replace in size shape and profile. Period correct replacements shall match as identified by the COR.

(10) Prior to resetting/rehanging the sash, repair the frame, casing, sill and trim of each window. Replacement parts shall match that which they replace in size, shape and profile.

(11) Reglaze windows. The work includes the removal of the old failed or loose glazing compound and putty, cleaning of the wood sash and glass to receive the new glazing compound, replacement of any missing, broken or cracked glass, and reglazing the window sash after the prime painting. Sound tightly bonded glazing compound may remain. Blend new glazing compound with older sound glazing compound matching the profile of the existing. Do not apply thin or skim coats of glazing compound over the existing glazing compound left in place. Replacement glass shall match that which it replaces in thickness and size.

(12)

iii) Window Sashes: The work includes the removal of the existing sash from the frames for painting prep work including removal of paint as specified or required, and the repair and reglazing of the sash is required. Reinstallation of the same at the completion of repairs, including the rehanging of the sash with new sash cords utilizing the existing sash weights, new hardware and weather stripping as specified or required to achieve a weatherproof installation free of drafts and water intrusion is also included. The removal of the existing storm windows or plexiglass covers and their reinstallation after the work on the windows is completed is also included. The installation of temporary plywood security panels in the window openings while sash are removed is also required. Repairs include the patching or filling of small gouges (greater than 3/32” in width and/or depth), the removal of sections of damaged or rotted wood rails, stiles and muntins and the replacement of the same with dutchmen repairs where less than 50% of a rail, stile or muntin is damaged. Full replacement required if damage exceeds 40% of a rail, stile or muntin. All new wood rails, stiles and muntins shall match the existing in size, shape and profile unless otherwise noted. Where damage is such that 40% or more of the wooden members of a sash must be replaced the contractor in consultation with and the agreement of the owner may fabricate a replacement sash in lieu of repairs. Replacement sash shall match the existing sash that it replaces in size, number of lites, shape and all molded profiles.

(1) Basis of Bid quantities for window sashes:

(a) The contractor shall provide all labor, material and equipment to accomplish the following work. The quantities and types of repair are based on the assumed condition of the windows. Modifications to the contract will be considered for work in excess of the listed quantities of work provided that the COR is notified in writing and the CO approves any additional work in writing prior to additional repairs being carried out.

Basis of bid quantities:

· 8 window sashes to be reconstructed to match their period correct design

(i) Note: The replacement of sash includes adjustments for the installation of the replacement sash. If sashes are not required for the work, the contractor shall turnover to the owner. The replacement sashes will be constructed to meet their period correct features as identified by the COR. The replacement sashes are to be oversized by 1/8” in width (1/16” each side) and 1/8” in height (extra height in the bottom rail) to the actual opening size and trimmed to fit the opening.

iv) Window Frames and Sills: Repairs include the repair or replacement of missing stops and trim, patching or filling of small gouges (greater than 3/32” in width and/or depth), the removal of damaged or rotted wood window framing members including jambs, fascia boards, interior trim, lintels and sills and the replacement of the same with new wood jambs, fascia boards, interior trim, lintels or sills matching the existing in size, shape and profile unless otherwise noted. Jambs fascia boards, interior trim or sills exhibiting rot or damage of less than 40% of the member may be repaired with a properly formed and shaped dutchmen. Dutchman repairs shall match the existing member in size, shape and profile. Lintels requiring repair due to significant damage or rot shall be replaced in their entirety.

(1) Basis of bid quantities for window repairs:

(a) In carrying out the work described in this scope of work the contractor shall include the following quantities of work in their bid. All window sashes are to be removed for work and secure temporary panels. Dimensions, drawings and quantities provided are general in nature and intended for the convenience of the contractor and are not a substitute for a site visit to confirm the SOW and conditions of the site. Dimensions and quantities are the responsibility of the contractor and must be confirmed in the field. No adjustment to bid price will be allowed or observable conditions on site.

(i) Window repair (minor): To include removal and rehanging of the sash, hardware replacement, weather stripping and normal paint prep work, reglazing, replacement of broken glass, re-installation of acrylic to the sash and minor repairs to the existing wood and replacements of stops, trims and parting beads as needed with standard shapes and moldings. Does not include dutchmen repairs and replacement of wood members of sash, frame and sills in their entirety.

Basis of bid quantities:

· 7 complete windows

· 4 window frames and components to include exterior trims

(ii) Window repair (major): The contractor shall provide all labor, materials and equipment to accomplish the following work. The quantities and types of repair are based on the assumed condition of the windows. Modifications to the contract will be considered for work in excess of the listed quantities of work provided that the COR is notified in writing and the CO approves any additional work in writing prior to additional repairs being carried out.

Basis of bid quantities:

· Complete replacement of 4 window sills

· 6 dutchman repairs to window frame members, 3 linear feet each

· Complete replacement of 4 window sash rails

· Complete replacement of 4 window sash stiles

· Complete replacement of 30 linear feet of exterior window trim with period correct trim

v) Painting:

(1) Interior: All windows including all sashes and associated trim, stools, aprons, sills, facings, and frames and all exterior doors (including door, frames and stops) shall be prepared, primed and painted.

(2) Exterior: All windows including all sashes and associated trim, stools, aprons, sills, facings, and frames and all exterior doors (including door, frames and stops) shall be prepared, primed and painted. Also, all exterior wood elements to include, but not limited to, rake boards, fascia, porch components (excluding the deck boards and frame), rafter tails and exposed roof sheathing shall be prepared, primed and painted.

(3) All painting shall be color matched to the existing colors. Paint shall match that which it is replacing in color, sheen and paint or wash type. All paints are to be approved by the COR prior to application.

(4) When carrying out paint prep work on the exterior of a window a critical barrier consisting of 6 mil plastic sheeting that fully covers the window opening shall be installed. It shall be fully taped on all sides. At the conclusion of the work on the window remove the barrier, do not allow paint chips or debris to escape properly decontaminate the area dispose of plastic sheeting and all debris properly.

(5) All horizontal surfaces where lead paint flakes and dust may collect shall be HEPA vacuumed and wet wiped to remove loose debris. Loose paint flakes and dust shall be collected, containerized and disposed of in accordance with state and federal hazardous waste regulations. Soil shall be tested at the start of the work prior to any paint prep work. Soil sampling data shall be turned over to the COR.

(6) The Contractor shall comply with local codes and regulation in the cleanup and disposal of construction debris and trash including regulations for the disposal of hazardous and/or toxic materials. Recycle left over paints and other construction waste to the extent possible.

(7) The Contractor shall provide plastic sheeting 6 mil or heavier to cover the ground below the area of his work. Extend the plastic sheeting out a minimum of 10’ in every direction from the area of active work. Secure the plastic sheeting to keep it in place, protect from wind uplift or disturbance. Adjust the area of coverage as the work progresses during the day to maintain the required coverage below and beyond the work. Do not reposition the plastic sheeting, add additional plastic sheeting as required, lap joints a minimum of 12”. At the end of the day pick up larger debris and dispose of properly, then roll up/fold plastic sheeting, being careful not spill debris and dispose of plastic sheeting properly. Do not reuse plastic sheeting.

(8) Partially containers of paints, caulk and other material remain the property of the Contractor and shall not be left on premises at the end of the project.

(9) The painting subcontractor shall possess a valid lead renovation license from the Commonwealth of Pennsylvania.

(10) It is the intent of the work that all exterior wood elements and surfaces affected by the roofing and window work shall be painted whether previously painted or not. Previously painted and unpainted surfaces shall be cleaned and properly prepared to receive new primers and paints as specified. In general building features to be painted include but are not limited to cornices, rake boards, window sashes, frames, trims, stools and sills and new or replaced stucco at concealed flashings.

(11) Contactor shall perform all painting prep work including, but not limited to, scraping, sanding, caulking, puttying and cleaning as required to put the wood surfaces in proper condition for painting

(12) No roof shingles, metal or flashing, gutters or rain leaders or attachments of the same, glass, electrical meters, gas meters, piping, unpainted conduit or wiring, unpainted brick or stone or unpainted parged brick or stone, or building hardware is be painted unless called for or indicated in the contract documents. Provide drop cloths and masking to protect adjacent surfaces not required or indicated to be painted.

(13) Previously painted surfaces, after proper preparation, shall receive one coat of the specified primer followed by one coat of the approved finish paint.

(14) Bare, unpainted surfaces, including those areas of bare wood exposed in the paint prep work, shall receive one coat of the specified primer followed by two coats of the approved finish paint.

(15) Surfaces receiving the specified number of coats that show insufficient coverage bleed through, or other defects of coverage shall receive additional applications until such defects are corrected and proper results obtained.

(16) All new wood incorporated into the work shall be primed on all sides including end grain priming. Field cuts shall have primer reapplied to the end grain to ensure continuous coverage.

(17) Remove hardware, hardware accessories, machined surfaces, plates and similar items in place and not to be finish painted or provide surface applied protection prior to surface preparation and painting operations. Remove, if necessary, for complete paining of items and adjacent surfaces. Following completion of painting of each area, reinstall removed items, and remove applied protections.

(18) The Contractor shall match the existing color(s) and finish of the surface(s) being painted with paint products meeting the requirements of the paint specifications. The painter shall submit a 12” x 12” sample board showing both finish and color proposed for the work from which the paint colors shall be selected and approved. Resubmit rejected color samples until an acceptable match has been achieved and approved.

(19) Mix and prepare paint materials in accordance with the manufacturer’s directions. Paint shall be applied at the rate and thickness recommended by the manufacturer.

(20) Job Conditions:

(a) Apply water base paints only when temperatures of surfaces to be painted and surrounding air temperatures are between 45 degrees F and 95 degrees F.

(b) Apply solvent thinned paints only when the temperature of the surfaces to be painted and surrounding air temperatures are between 55 degrees F and 95 degrees F.

(c) Do not apply paint in snow, rain, fog, or mist; or when relative humidity exceeds 85%; or to damp or wet surfaces.

(d) Painting may be continued during inclement weather if areas and surfaces to be painted are enclosed and heated within temperature limits specified by paint manufacturer during application and drying periods.

(e) Determine alkalinity and moisture content of surfaces. If surfaces are found to be sufficiently alkaline to cause blistering and burning of finish paint, correct the condition before application of paint. Do not paint over surfaces where moisture content exceeds that permitted in the manufacturer’s printed directions.

(f) Perform preparation and cleaning procedures in accordance with the paint manufacturer’s instructions and as herein specified, for each particular substrate condition.

(21) Store materials not in actual use in tightly covered containers. Maintain containers used in storage, mixing and application of paint in a clean condition, free of foreign materials and residue.

(22) Stir materials before application to produce a mixture of uniform density and stir as required during application. Do not stir surface film into material. Remove film and, if necessary, strain material before using.

(23) All painting will be done by experienced workmen and only first class work will be permitted or accepted.

(24) Give special attention to ensure that all surfaces, including edges, corners, crevices, recesses, welds, and exposed fasteners receive a dry film thickness equivalent to that of flat surfaces.

(25) Do not paint over dirt, rust, scale, grease, moisture, scuffed surfaces, or conditions otherwise detrimental to formation of a durable paint film.

(26) Apply first coat material to surfaces that have been cleaned, pretreated or otherwise prepared for painting as soon as practical after preparation and before subsequent surface deterioration.

(27) Allow sufficient time between successive coatings to permit proper drying. Do not recoat until paint has dried to where it feels firm, does not deform or feel sticky under moderate thumb pressure and application of another coat of paint does not cause lifting or loss of adhesion of the undercoat.

(30) Completely cover to provide an opaque, smooth surface of uniform finish, color, appearance and coverage. Cloudiness, spotting, holidays, laps, brush marks, runs, sags, ropiness or other surface imperfections will be corrected and refinished.

(31) 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.

(32) Materials: (all materials used in painting shall be delivered to the site in the manufacturer’s original unopened containers.)

(a) Primer:

(i) 100% acrylic resin, Titanium Dioxide tintable white primer. Density – 10.2 lbs. / gal.

(ii) Solids – Volume = 36% +/- 1%

(iii) Weight = 47% +/- 1%

(iv) VOC – 100g/L (0.84 lbs. / gal.)

(v) Gloss 8 – 15 units @ 60°

(vi) Flash Point – none

(vii) Flame Spread – Class A on noncombustible surfaces.

(viii) No lead or mercury used in manufacturing.

(b) Paint:

(i) 100% acrylic resin, Titanium Dioxide and extender pigments.

(ii) Density – 10.28 lbs. / gal.

(iii) Solids – Volume = 35% +/- 1%

(iv) Weight = 48% +/- 1%

(v) VOC – 50g/L (0.42 lbs. / gal.)

(vi) Semi-Gloss 38 – 60 units @ 60°

(vii) Flash Point – none

(viii) Flame Spread – Class A on noncombustible surfaces.

(ix) No lead or mercury used in manufacturing.

(c) Whitewash:

(i) Site mix:

1. 40lbs hydrated lime

2. 10lbs white Portland cement

3. ¾ cup of white latex paint

4. 8 gallons clean potable water

5. Dry mix the hydrated lime and white Portland cement. Gradually add water, mixing well, add glue mix thoroughly. Consistency should be that of heavy cream. Add the white latex paint to the whitewash and mix well. Yields a little over 8 gallons, enough to cover 1000 +/- square feet

vi) Carpentry repairs:

(1) Furnish all labor, equipment, and materials required to accomplish exterior carpentry repairs as indicated, specified or required.

(2) The contractor shall be…