Attachment 1 - Specifications .docx

WORK STATEMENT

PART 1 GENERAL

1.01 PROJECT SCOPE

A. This contract shall include the construction detailing, shop drawing, fabrication, and installation of a new stair system and associated site work at the Grey Towers National Historic Site. Work shall include the full range of equipment, material, labor, and services necessary to construct the new stair system.

B. Base Bid: The general scope of work includes but is not limited to the following: Mobilization and demobilization, site preparation and erosion control, site clearing, tree protection, earthwork, ADA compliant handrail/baluster( to match existing handrails on site), entrance and exit bluestone landings, dry laid stone walls, low level stair lighting and associated electrical service, site restoration, and all other appurtenances necessary for stair construction.

C. Optional Item 1 – Timber Stair System with Composite Decking and Fascia: The general scope of work includes but is not limited to the following: Pressure treated timber stair system, composite lumber decking and fascia, and all other appurtenances necessary for stair construction.

D. Optional Item 2 – Preassembled Steel Stair System with Concrete Pans for Bluestone Landings and Treads: The general scope of work includes but is not limited to the following: Preassembled steel stair system with concrete pans, bluestone treads, bluestone stair landings, and all other appurtenances necessary for stair construction.

E. Optional Item 3 – Additional Dry Laid Stone Walls: The general scope of work includes approximately 120 linear feet of additional dry laid stone walls and all other appurtenances necessary for dry laid stone wall installation.

F. Optional Item 4 – Radiant Snow Melt System, to be installed with Steel Stair System: The general scope of work includes a radiant snow melt system for the bluestone treads, stair landings, and all other appurtenances necessary for the radiant snow melt system installation.

1.02 PROJECT LOCATION

A. The Grey Towers National Historic Site is located in Milford Township, Pennsylvania. The project site is located off of Old Owego Turnpike, approximately ¼ mile south of State Route 6, in Milford Township, Pennsylvania.

B. The new stair system shall be located to the southeast of the existing employee parking facility on a sloped lawn area adjacent to the Mansion.

1.03 SUBMITTALS

A. Product Data and Material Certifications: For each type of product indicated, as follows:

1. Pressure treated lumber.

2. Preassembled steel stair system.

3. Composite lumber decking and fascia.

4. ADA compliant metal handrail/baluster.

5. Low level stair lighting.

6. Topsoil source and analysis.

7. Seed certificates and source.

3. Stair Lighting

4. Dry laid stone wall.

5. Metal handrail/baluster ( to match existing on site)

C. Contractor qualifications, manufacturer qualifications, and references.

D. Shop Drawings: Base Bid Items. Indicating ADA compliant metal handrail/baluster drawings (to match existing handrail/baluster at visitor service area) and low level stair lighting and electrical system drawings.

E. Shop Drawings: Optional Item 1 – Timber Stair System with Composite Decking and Fascia. Indicating stair system layout plan, grading plan, sections, details, engineering calculations, and all other information necessary to install stair system.

F. Shop Drawings: Optional Item 2 – Preassembled Steel Stair System with Concrete Pans for Bluestone Landings and Treads. Indicating stair system layout plan, grading plan, sections, details, engineering calculations, and all other information necessary to install stair system.

1. The stair system drawings shall be sealed and signed by a professional engineer licensed to practice in the Commonwealth of Pennsylvania.

G. Shop Drawings: Optional Item 4 – Radiant Snow Melt System, to be installed with Steel Stair System for landings and treads. Indicating all information necessary to install the radiant snow melt system.

1. The radiant snow melt system drawings shall be sealed and signed by a professional engineer licensed to practice in the Commonwealth of Pennsylvania.

1.04 CONTRACTOR QUALIFICATIONS

A. Qualifications: The Contractor and all related subcontractors must have a minimum of 3 years related experience in similar construction practices and provide written evidence of past successful projects.

1.05 PROJECT CONDITIONS

A. Existing Conditions: Field-verify existing conditions to determine exact locations, distances, levels, dimensions, and elevations.

B. Existing Utilities: Contractor shall note that except where noted for removal, all existing utilities within the project area are to remain. All care necessary to protect these utilities shall be taken to avoid damage during construction. Any required repairs are the responsibility of the Contractor.

C. Existing utilities shown on the plans are for information purposes only. It is the Contractor’s responsibility to contact Pennsylvania ‘One Call System’, Inc., (800) 242-1776 to verify locations of all underground utilities. The Contractor shall notify appropriate governing bodies prior to any excavation.

D. The existing timber stair system is currently served by electrical service and low level stair lighting. It is expected that the new stair lighting system will utilize the existing electrical service connection for the new stair lighting system. It is expected that the radiant snow melt system will be serviced from the southwest Mansion tower. The Contractor shall evaluate the existing electrical service and confirm the feasibility of the connection source during the shop drawing approval process.

E. The Grey Towers National Historic Site will be open to the public during construction. Maintain access for USFS staff for construction administration inspections, administrative, and other official business throughout the construction phase. Provide access management plan during shop drawing approval process.

F. Temporary Electrical Service: Temporary electrical service may be obtained on site for incidental equipment and machinery operation at the discretion of the USDA Forest Service.

1.06 CONCEPT PLAN

A. An Existing Conditions Plan and Concept Plan are attached for informational purposes. The Concept Plan depicts the preferred layout design for development of the stair system. It is the Contractor’s responsibility to determine the final stair system design. Exact layout and construction detailing shall be the responsibility of the Contractor during the shop drawing approval process.

1.07 PROJECT COORDINATION

A. Contractor shall note that the Owner’s Designated Representative will schedule periodic operation meetings between all Contractors performing work at the Grey Towers National Historic site for coordination of construction activities, major delivery schedules, and/or where projects may encroach into the limit of construction.

B. Project Schedule: Contractor shall prepare a detailed project schedule for shop drawings submittals and construction phases with critical path milestone identified as applicable.

PART 2 PRODUCTS

2.01 GENERAL

A. For Options Items 2 and 4 - All construction detailing work completed as part of the shop drawing approval process must be completed under the supervision of a Professional Engineer licensed in the Commonwealth of Pennsylvania. The shop drawings must be sealed and signed by the Professional Engineer.

B. Detailing Standards: All layout and construction work shall be completed in accordance with applicable local, state, and federal laws, statutes, building codes and regulations, and additional standards or instructions provided by the government.

1. Contractor shall note that although local building permit is not required, the stair system shall be designed and constructed to meet all applicable federal and state building codes, including, but not limited to the International Building Code of 2002 and the National Electrical Code.

C. Work shall include all labor, materials, and equipment necessary to create the fully articulated design for this project. Including, but not limited to the following:

1. Verification of preferred Concept Plan design and layout.

2. Shop drawings and manufacturer’s product cut sheets as necessary to clearly express the intent of the design.

3. Design calculations and loading information as required.

D. Verification: The Contractor shall make on-site investigations, as necessary, to verify existing site conditions and correct or supplement data to reflect existing conditions. Design data utilized shall reflect the current existing conditions.

E. The Contractor shall not proceed or initiate any fabrication or installation work prior to receipt of approval of the associated shop drawing.

F. Archaeological Finds: Grey Towers is a historic site and many areas have been previously disturbed. However, care should be given when coming across a possible in ground historic features or artifacts. Stop all work and notify the Contracting Officer Representative (COR) so an investigation can take place.

2.02 BASE BID

A. Site Clearing: Strip and stockpile topsoil; remove shrubs, grass, and other vegetation, improvements, or obstructions, as required, to permit installation of new construction.

B. Erosion Control: Implement best management practices for erosion and sediment control per Pennsylvania Department of Environmental Protection and Pike County Conservation District regulations and standards.

C. Tree Protection: Provide 4-foot high, dark green polyethylene warning fence to serve as a construction activity boundary around site improvements and trees indicated to remain.

D. Earthwork: Conduct earthwork operations to facilitate the installation of the new stair system.

E. ADA Compliant Handrail/Baluster: ADA compliant handrail/baluster shall meet applicable codes and regulations for ADA accessibility and match the existing handrail/baluster system installed at the Grey Towers Visitor Services Facility. Top handrail shall consist of a 2-1/4-inch polished bronze member mounted on rectangular steel bar stock. Parallel intermediate rail shall be 5/8-inch x 1-1/4” steel and shall be offset 4-inches from top handrail. Handrail/baluster system posts shall be 1 1/4-inch steel square. Intermediate baluster shall be 3/4-inch square bar stock, spaced 4-inches on-center. All steel components shall receive primer coat with powder coated finish, color as approved by the Owner. Contractor to provide expansion joints between handrail/baluster system segments as required.

F. Entrance & Exit Bluestone Landings: Bluestone landings shall consist of 2-inch thick stone, thermal finished top, and saw cut edges. Cut stone sizes shall be in increments of 2 or 3-feet. Bluestone landings shall be dry laid, set on 1-inch sand leveling course over 6-inches of stone subbase material.

G. Dry Laid Stone Walls: Stone shall match existing stone walls found on site. Matching characteristics shall include dimensional size, finish, masonry pattern, and color.

H. Low Level Stair Lighting & Associated Electrical Service: Shall consist of the following, as approved by the Owner:

I. Site Restoration: All areas disturbed as part of construction activities shall be restored to their original condition. Extent of site restoration work shall include lawn establishment via hydroseeding and installation of topsoil as required.

b. Seed mix to be 98% pure, 99% weed seed free, and have a minimum 90% germination rate.

2.03 OPTIONAL ITEM 1 – TIMBER STAIR SYSTEM WITH COMPOSITE DECKING AND FASCIA

A. Lumber, General: Provide lumber with each piece factory-marked with grade stamps of Inspection Agency evidencing compliance with grading rule requirements and identifying grading agency, grade, species, moisture content at time of surfacing, and mill (pressure treated lumber required).

B. Dimension Lumber: For structural framing (2 to 4-inches thick, more than 4-inches wide) provide Surfaced Dry, No. 1/No. 2 or Better Grade, Spruce-Pine-Fir (SPF), graded under NLGA rules or species and grade acceptable to the Owner with allowable base design values equal to or greater than: Fb = 875 psi / E = 1,400,000 psi.

C. Composite Lumber: Composite lumber shall be made of reclaimed wood and plastic, anti-skid/slip resistant surface, grey color range, and shall be as approved by the Owner.

2.05 OPTIONAL ITEM 2 – PREASSEMBLED STEEL STAIR SYSTEM WITH CONCRETE PANS FOR BLUESTONE TREADS

A. Preassembled Steel Stairs, General: Shop drawing and layout of metal stairs, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements, design criteria, loads and stresses that meet applicable local, state, and federal laws, statutes, and building codes.

B. Bluestone Stair Landings and Treads:

2.06 OPTIONAL ITEM 3 – ADDITIONAL DRY LAID STONE WALLS

A. Dry Laid Stone Walls: Stone shall match existing stone walls found on site. Matching characteristics shall include dimensional size, finish, masonry pattern, and color.

2.07 OPTIONAL ITEM 4 – RADIANT SNOW MELT SYSTEM, FOR STEEL STAIR SYSTEM WITH TREADS

A. Radiant Snow Melt System, General: Radiant snow melt system shall be designed to include the following factors: Definition in terms of equivalent water weight of the amount of snow that must be removed per hour; determination of the lowest outdoor design temperature at which the system will operate during snow melt phase; calculation of the energy requirement (Btu/hr) necessary to accomplish snow melting at the design conditions; calculation of the total system energy requirement; selection and design of the control strategy (on/off, idling, or combination); selection and design of the zone control, distribution, heat plant and tempering system.

B. Radiant Snow Melt System, Type: Radiant snow melt shall be an electric system.

PART 3 EXECUTION

3.01 POSTED OPERATING INSTRUCTIONS FOR RADIANT HEAT SYSTEM

A. For radiant snow melt system, furnish operating instructions attached to or posted adjacent to equipment. Include wiring diagrams, control diagrams, control sequence, startup, adjustment, operation, lubrication, shutdown, safety precautions, procedures in the event of equipment failure, and other items of instruction recommended by the manufacturer.

3.02 CLEANING

A. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and rubbish. Restore or refinish surfaces that are damaged due to work of this contract to original condition. Remove grease, dirt, stains, foreign materials, and labels from finished surfaces. Pick up all construction debris from the site. At time of final inspection, project shall be thoroughly clean and ready for use.

3.03 PROJECT RECORD DRAWINGS

A. Maintain one complete full-size set of contract drawings and one full-size set of vendor supplied drawings. Clearly mark changes, deletions, and additions using USDA Forest Service drafting standards to show actual construction conditions. Show additions in red, deletions in green and special instructions in blue.

B. Keep record drawings current. Make record drawings available to the Contracting Officer for inspection at the time of monthly progress payment requests. If project record drawings are not current, the Contracting Officer may retain an appropriate amount of the progress payment.

C. On completion of the total project, submit complete electronic record drawings with changes, deletions, and additions drafted in AutoCAD Civil 3D 2010 format. Include all shop drawings, sketches, and additional drawings that are to be included in the final set, with clear instructions showing the location of these drawings.

D. Provide (2) two hard copies of Record Drawings and turn over to COR at project closeout.

3.04 CLOSEOUT SUBMITTALS

a) All systems are complete.

b) All systems have been properly started and are operational.

c) All controls are complete and operational, and sequences have been checked and are functioning properly.

3.05 SUBSTANTIAL COMPLETION AND FINAL INSPECTION

A. When the project is substantially complete, request in writing a final inspection. Upon receipt of written request that project is substantially complete, the Contracting Officer will proceed with inspection within 10 days of receipt of request or will advise the Contractor of items that prevent the project from being designated as substantially complete.

B. If, following final inspection, the work is determined to be substantially complete, Contracting Officer will prepare a list of deficiencies to be corrected before final acceptance and issue a Letter of Substantial Completion. Contractor shall complete the work described on the list of deficiencies within 30 calendar days, as weather permits. If the Contractor fails to complete the work within this time frame, the Contracting Officer may either replace or correct the work with an appropriate reduction in the contract price or charge for re-inspection costs in accordance with the Inspection of Construction clause of the contract.

C. If, following final inspection, the work is not determined to be substantially complete, Contracting Officer will notify Contractor in writing. After completing work, Contractor shall request a new final inspection. All re-inspection costs may be charged against the Contractor in accordance with the Inspection of Construction clause of the contract.

3.06 FINAL ACCEPTANCE OF THE WORK

A. After all deficiencies have been corrected; a Letter of Final Acceptance will be issued.

WORK STATEMENT Page 1 of 8