A06_ATT_1_Specifications_CRLA_Roofs_140P8424Q0077.pdf

CRLA 248251_248252 GENERAL REQUIREMENTS Page 1

PROJECT SPECIFICATIONS

GENERAL REQUIREMENTS

PART 1 – SUMMARY OF WORK (SECTION 01 11 00)

1.1 WORK COVERED BY CONTRACT DOCUMENTS

A. General: All work outlined below will be performed under a single contract.

B. Project Location: This project is located near the park headquarters, in Crater Lake National Park, Klamath County Oregon. A site location map is attached for reference.

C. Project Scope of Work:

This project will remove and replace roofs on two nearly identical buildings. The buildings are historic park staff housing units located in the park headquarters area. Each roof consists of approximately 1,250 square feet of wood shakes, 1,250 square feet of water and ice shield and 75 linear feet of copper flashing on the chimney and at the ridge. In addition, 125 linear feet of copper drip edge will be installed. It is believed that sections of the roof sheathing in each building may have areas of rot and where the existing roof has leaked, and the rotten sheathing shall be replaced. For planning and bidding purposes, the contractor shall plan on removing and replacing up to 50 percent of the sheathing. The actual rotten area is believed to be smaller but is unknown. If more than 50 of the sheathing is found to be rotten a contract modification will be issued.

Stone House 31

CRLA 248251_248252 GENERAL REQUIREMENTS Page 2

Stone House 32

1.2 REFERENCE DOCUMENTS / REPORTS

A. General: The following reference documents / reports are attached or available upon request to supplement the information in the specifications:

1. NPS Forms (RFI, CM-16, and QC Daily Report)

2. Site Location Map

3. Park Regulations

1.3 GOVERNMENT-FURNISHED ITEMS

A. The Government may furnish products and materials for incorporation into the work.

1. The government will arrange and pay for delivery of government furnished items to the project site based on the contractor’s approved construction schedule.

2. After delivery, the government will inspect delivered items for damage. If items are damaged, defective, or missing, the government will arrange for replacement.

3. The contractor is responsible for receiving, unloading, and handling government furnished items at project site for use in the work.

4. The contractor is responsible for protecting government furnished items during storage, handling, and the work, including damage from exposure to the elements.

5. If government furnished items are damaged as a result of the contractor’s operations, the contractor shall repair or replace the items in-kind.

CRLA 248251_248252 GENERAL REQUIREMENTS Page 3

1.4 PUBLIC / STAFF USE OF THE SITE

A. General: The work will occur in seasonal housing units that will likely be occupied at the time of construction. The contractor shall always conduct operations to ensure the least inconvenience to staff. Park staff will coordinate with tenants prior to work starting.

1.5 CONTRACTOR USE OF SITE

A. General: Limit use of the site during the construction period to the project area limits.

B. Park Regulations: Ensure all personnel (contractors, subcontractors, and vendors) entering or working in the park are familiar with and obey all park regulations. Law enforcement rangers will intervene if they perceive any unsafe or unlawful activity.

C. Park Entry: Vehicles associated with the Contractor shall be waived the entrance fee upon entering in a marked company vehicle or by providing the names of employees entering in personal vehicle(s). Please note that the entrance fee is waived only for the purpose of reporting directly to a specific work location. Any deviation for recreational purposes is subject to payment of required entrance fees.

1. Provide the Contracting Officer with a listing of all contract personnel and their associated vehicles entering the park on a daily basis.

2. Provide the Contracting Officer with a listing of anticipated deliveries for each week.

D. Site Access: The contractor shall access the project site as outlined on the attached site map.

Do not drive vehicles off road or access non-project areas without permission from the contracting officer or their representative.

E. Working Hours: Regular work hours shall be limited to daylight hours from 8:00 a.m. until 5:00 p.m. Monday through Friday, excluding government holidays. Work outside regular hours requires approval from the contracting officer.

F. Staging and Storage: Confine the storage of equipment and materials to the staging / lay-down / storage areas as established at the preconstruction meeting.

G. Property Damage: The Contractor is required to report missing, lost, stolen, or damaged property occurring within the park. This report must be made to a Law Enforcement Ranger or Park Dispatch at the first available opportunity.

H. No Smoking Policy: Smoking is prohibited inside or outside within 25 feet of any buildings in the park. This applies to existing buildings and buildings under construction or renovation.

Discarding of tobacco products or debris anywhere other than into designated tobacco receptacles is considered littering and subject to fines.

CRLA 248251_248252 GENERAL REQUIREMENTS Page 4

PART 2 – WORK RESTRICTIONS (SECTION 01 11 40)

2.1 WORK RESTRICTIONS

A. General: The Contractor must comply with the following work restrictions:

B. Vehicles / Heavy Equipment:

1. Rules of the Road: All vehicles and heavy equipment will comply with posted traffic regulations, including speed limits and double-yellow center lane markings. Vehicles and heavy equipment shall take every safe opportunity to use paved roadside pullouts in order to allow faster moving traffic to pass. Failure to comply with traffic regulations will result in a citation being issued to the driver.

2. Vehicle Parking: The contractor shall park vehicles and heavy equipment in designated areas as established at the preconstruction meeting. Vehicles are not permitted within long-term or overnight parking along park roads or in associated overlooks / pullouts.

3. Driveways and Entrances: The contractor shall keep driveways and entrances serving the premises clear and available to the government, government employees, and emergency vehicles at all times.

4. Vehicle Exhaust: All vehicles will be properly maintained to ensure that the exhaust produced is within legal limits. Effects of excessive vehicle exhaust may be subject to enforcement of State and Federal laws regarding emissions as well as those regarding threatened and endangered species.

5. Spills: The Contractor shall be responsible for any cleanup efforts required in accordance with 40 CFR and all applicable state environmental quality laws regarding disposal and cleanup of hazardous / industrial wastes. Contractor must immediately notify the Contracting Officer of spills.

6. DOT Compliance: All vehicles are to be compliant with all DOT requirements including but not limited to driver with appropriate license class, medical examiner card as appropriate with license class, carrying three (3) triangles or three (3) flares, mounted fire extinguisher, and valid DOT safety sticker.

7. Oversized Vehicles: Oversized vehicles are defined as vehicles where the width of the vehicle or load exceeds one lane (i.e., beyond the center line of the paved road).

Oversized vehicles must not exceed the clearances along the Park road corridor.

Oversized vehicles will require an escort and drivers must avoid driving on the edges of the Park road. The Contractor is to notify the Contracting Officer of oversized vehicles, scheduled dates, and estimated arrival times at the park entrance; and the identity of who is escorting the vehicle (e.g., police, contractor, etc.). Vehicles that are oversized are requested to enter the Park AFTER 2:00 p.m. and exit the Park BEFORE sunset.

C. Resource Protection:

CRLA 248251_248252 GENERAL REQUIREMENTS Page 5

1. General: The Park is committed to protecting natural and cultural resources found within the park and adjacent lands. The Contractor must comply with the following rules and conditions:

2. Preservation of Natural Features: Prevent damage to natural surroundings. Do not attach ropes, wires, guy lines, cables, or chains to trees or vegetation. Restore damaged areas and replace damaged trees, vegetation, and grass at no expense to the government.

3. Endangered Species: Endangered species are protected by Federal law. Obey all park regulations. Drivers must obey all traffic laws and watch for animals on or alongside road or at the jobsite. Contact Park Dispatch immediately if animal is hit or injured or will not move off the road.

4. Soundscape / Noise: The contractor shall minimize noise levels at the project site to protect the soundscape of the park. Perform noise-producing work in less sensitive hours of the day or week or as directed by the contracting officer.

PART 3 – PROJECT MANAGEMENT (SECTION 01 31 00)

3.1 SUBMITTALS

A. Division 01 Submittal Documents: The following documents shall be submitted a minimum of one week prior to the Preconstruction Meeting. If all of these documents have not been received one week prior to the scheduled Preconstruction Meeting date, the meeting will be cancelled and the Notice to Proceed (NTP) will not be issued. Work shall not commence until written Notice to Proceed has been issued.

1. Letter designating the Project Superintendent.

2. Construction Schedule - Submit a baseline schedule with start date, end date, major work activities and durations, estimated pre-final inspection date, and other major milestones.

Provide updates to baseline schedule as needed / requested during construction.

3. Schedule of Values (SOV) – Submit a schedule of values with a breakdown of component work activities for which progress payments will be requested. The total costs for the component work activities shall equal the total contract price.

4. Accident Prevention Plan (APP) – Submit an accident prevention plan with the name of the supervisor responsible for executing the plan, a job hazard analysis for each major work activity, first aid procedures, and planning for potential emergency situations.

B. Division 02-49 Submittal Documents: The following documents shall be submitted to the Contracting Officer prior to construction start. If these documents have not been received and approved by the NPS prior to construction, the construction start date may be delayed.

1. Product Data – Submit product cut sheets / material data on all products to be used for approval. Indicate the size, model, or type of each recommended product.

CRLA 248251_248252 GENERAL REQUIREMENTS Page 6

2. Samples – When requested, submit a physical sample of a product or an array of color choices for approval.

3. Shop Drawings - Submit shop drawings that embody all major elements of the work.

a. Drawings shall be developed in AutoCAD or similar drafting software.

b. Drawings shall include details, dimensions, notational information, and other data to ensure the contractor has a complete understanding of the work.

c. Drawings shall be submitted to the Contracting Officer in PDF format. Allow 2 weeks for the drawings to be reviewed by NPS staff. The Contractor shall incorporate review comments into the shop drawings and resubmit for final approval.

3.2 PRECONSTRUCTION MEETING

A. Preconstruction Meeting: Before the start of construction, the Contracting Officer will arrange for a preconstruction meeting either on site or via teleconference. The meeting agenda will include the following topics:

1. NPS Roles & Responsibilities

2. Key Contractor Personnel

3. Coordination with Subcontractors

4. Correspondence & Submittal Procedures

5. Submittals

a. Status of Division 01 Submittals

b. Schedule & SOV

c. Safety & Accident Prevention Plan

d. Status of Division 02-49 Submittals

6. Park Rules & Regulations

7. Work Hours and Weekend, Holiday, and Night Work

8. Project Information

a. Park Access & Vehicle Reporting

b. Jobsite Access & Parking

c. Staging, Storage, and Lay Down Area(s)

d. Temporary Facilities & Controls

e. Jobsite Restrictions

f. Resource Protection

g. Weather, Climate, Environmental Conditions

h. Reference Documents

i. Other Contracts / Ongoing Work

9. Labor Standards Provisions

10. Labor Interviews

11. Payroll Reports

12. Payments to the Contractor

13. Change Orders / Modifications

14. Progress Meetings

15. QC Daily Reports

16. Inspections

17. Acceptance and Rejection of Work

18. Closeout Procedures & Submittals

19. Contract Period of Performance

CRLA 248251_248252 GENERAL REQUIREMENTS Page 7

20. Notice to Proceed

3.3 REQUESTS FOR INFORMATION (RFIs)

A. General: On discovery of the need for additional information or interpretation of the Contract Documents, the Contractor shall prepare and submit a RFI utilizing the form attached.

1. Contracting Officer will only respond to RFIs submitted by the Contractor.

2. Coordinate and submit RFIs in a prompt manner to avoid delays in the work.

B. RFI Form: Include a detailed, legible description of the subject or item needing information or interpretation on the RFI Form with:

1. RFI number, numbered sequentially.

2. Date.

3. RFI subject.

4. Specification Section number and title and related paragraphs, as appropriate.

5. Drawing number and detail references, if applicable.

6. Photographs or sketches if applicable.

7. Contractor's suggested resolution. If the Contractor's suggested resolution impacts the contract time or the contract sum, Contractor shall state impact in the RFI.

C. Response to the RFI: The Contracting Officer will review each RFI, determine the action required, and respond accordingly.

PART 4 – SUBMITTAL PROCEDURES (SECTION 01 33 23)

4.1 SUBMITTAL PROCEDURES

A. CM-16 Transmittal Form: All submittals shall be transmitted using National Park Service CM- 16 form attached to the end of this specification section. No action will be taken on a submittal item unless accompanied by the CM-16 transmittal form. Complete all applicable fields, sign the form, and attach all supporting documentation.

PART 5 – SAFETY REQUIREMENTS (SECTION 01 35 23)

5.1 SAFETY REQUIREMENTS

1. First Aid Equipment: Provide adequate first aid equipment for all contract employees and the hazards associated with the types of ongoing construction work at the site.

2. First Aid Training: Provide adequate training to all Contractor personnel to ensure prompt and efficient application of first aid.

3. Personal Protective Equipment (PPE): Provide personal protective equipment (PPE) that meets applicable OSHA and ANSI standards for all contract employees.

4. Hazardous Materials: Hazardous materials are defined as explosive, flammable, poisonous, corrosive, oxidizing, irritating, or otherwise harmful substances that could cause death or injury. Store hazardous materials in accordance with manufacturer’s and OSHA

CRLA 248251_248252 GENERAL REQUIREMENTS Page 8 recommendations. Maintain MSDS onsite for each chemical used on the jobsite.

Immediately report all spills of hazardous materials to the contracting officer.

5. Safety Meetings: At a minimum, conduct weekly "toolbox" safety meetings. These meetings shall be conducted by a foreman or supervisor and attended by all construction personnel at the worksite. Topics need to coincide with work scheduled for the week.

6. Emergency Contacts: Post telephone numbers and reporting instructions for ambulance, hospital, fire department, police, and park dispatch in conspicuous locations at the site.

7. Emergency Reporting: In the event of an emergency medical incident, the Contractor shall Dial 911 as needed. The Contractor shall also contact Park Dispatch for any medical emergency, traffic accident, or personal injury occurring within the Park. Park Dispatch is called so that the entrance station will be prepared should any emergency vehicles need to enter the Park and so that any available Emergency Medical Services personnel in the Park might respond until such time as the ambulance arrives.

PART 6 – QUALITY REQUIREMENTS (SECTION 01 40 00)

4.1 QUALITY REQUIREMENTS

A. General: The Contractor is responsible for all quality control to guard against defects and deficiencies in the work. Inspect and test work as needed to ensure that the quality of materials, workmanship, construction, finishes, and functional performance are in compliance with applicable specifications, drawings, building codes and standards.

B. Quality Control (QC) Daily Reports: Submit quality control daily reports documenting the progress and quality of the work. The Contractor’s Quality Control Supervisor shall utilize the forms attached at the end of this Section. The submission frequency of the QC Daily Report to the contracting officer will be determined at the preconstruction meeting.

PART 7 – TEMPORARY FACILITIES & CONTROLS (SECTION 01 50 00)

7.1 TEMPORARY FACILITIES & CONTROLS

A. General: The contractor will be allowed to set up temporary facilities and controls as outlined. All temporary facilities and controls shall be removed from the site before final acceptance of the work.

B. Temporary Utilities: The following utilities / services are available for use at the project site:

1. Electrical Power Service: Electrical power service is available from facilities at or near the project site for use on the contract without charge.

2. Water Service: Potable water service is available from facilities at or near the project site for use on the contract without charge.

3. Sanitary Facilities: Restrooms are available at or near the project site for use on the contract without charge.

4. Telephone Cellular Service: The project site does not have cellular service.

CRLA 248251_248252 GENERAL REQUIREMENTS Page 9

C. Temporary Office: The construction of temporary office buildings or installation of trailers will not be allowed in the park. If the contractor requires office space, the park will attempt to accommodate the contractor with an existing space for administrative work.

PART 8 – EXECUTION (SECTION 01 73 40)

8.1 EXECUTION

A. Examination: Examine the project area and site facilities and verify compatibility between existing conditions and the scope of work.

B. Preparation: Take field measurements or conduct surveys to verify dimensions before fabrication or installation.

C. Installation: Install all systems or components according to the specifications, manufacturer’s recommendations, permit conditions (where applicable), and local, State, and Federal codes, standards, and regulations.

D. Correction of the Work: Upon discovery of defects or damage of new work or to existing facilities damaged by new work, repair or replace damaged systems or components and restore substrates and finishes.

E. Progress Cleaning: Clean the project site and work area on a daily basis. Keep site free of waste and debris in proper containment. Properly dispose of all waste and debris offsite.

F. Final Cleaning & Waste Disposal: At the completion of the work, clean all surfaces and remove all waste materials, trash, tools, equipment, machinery, and surplus items from the project site and legally dispose of all waste items.

PART 9 – CLOSEOUT PROCEDURES (SECTION 01 77 00)

9.1 SUBSTANTIAL COMPLETION AND FINAL INSPECTION

A. When the project, or a designated portion of the project, is substantially complete, the Contractor shall request a final inspection in writing. Upon receipt of the written request that the project is substantially complete, the Contracting Officer will proceed with a final inspection within ten (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 the work is determined to be substantially complete at the final inspection, the Contracting Officer will prepare a Letter of Substantial Completion with a Punch List of deficiencies to be corrected before final acceptance. The Contractor shall complete the work described in the Punch List within thirty (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 the work is determined to be not substantially complete, the Contracting Officer will notify the Contractor in writing. The Contractor may 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.

CRLA 248251_248252 GENERAL REQUIREMENTS Page 10

D. After all deficiencies have been corrected and the project is complete, a Letter of Final Acceptance will be issued by the Contracting Officer.

9.2 CLOSEOUT SUBMITTALS

A. Operation & Maintenance instructions, and product warranties

CRLA – 248251 & 248252 02 41 19 - 1

SELECTIVE DEMOLITION

SECTION 02 41 19 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Demolition and removal of selected portions of building or structure.

2. Demolition and removal of selected site elements.

3. Salvage of existing items to be reused or recycled.

B. Related Requirements:

1. Section 02 42 96 “Historic Removal and Dismantling” for historic treatment procedures for special types of selective demolition.

1.2 DEFINITIONS

A. Remove: Detach items from existing construction and dispose of them off-site unless indicated to be salvaged or reinstalled.

B. Remove and Salvage: Detach items from existing construction, in a manner to prevent damage, and deliver to the Government ready for reuse.

C. Remove or Salvage and Reinstall: Detach items from existing construction, in a manner to prevent damage, prepare for reuse, and reinstall where indicated.

D. Existing to Remain: Leave existing items that are not to be removed and that are not otherwise indicated to be salvaged or reinstalled.

E. Dismantle: To remove by disassembling or detaching an item from a surface, using gentle methods and equipment to prevent damage to the item and surfaces; disposing of items unless indicated to be salvaged or reinstalled.

1.3 MATERIALS OWNERSHIP

A. Unless otherwise indicated, demolition waste becomes property of Contractor.

B. Historic items, relics, antiques, and similar objects including, but not limited to, cornerstones and their contents, commemorative plaques and tablets, and other items of interest or value to the Government that may be uncovered during demolition remain the property of the Government.

1. Upon uncovering an item suspected of being historic, notify the Contracting Officer within

4 hours.

2. The Contracting Officer, or designated representative, will determine if the item is historic.

CRLA – 248251 & 248252 02 41 19 - 2

3. Carefully salvage in a manner to prevent damage and promptly return to the Government.

1.4 PRECONSTUCTION MEETINGS

A. Predemolition Conference: Conduct conference at Project site.

1. Inspect and discuss condition of construction to be selectively demolished.

2. Review structural load limitations of existing structure.

3. Review and finalize selective demolition schedule and verify availability of materials, demolition personnel, equipment, and facilities needed to make progress and avoid delays.

4. Review requirements of work performed by other trades that rely on substrates exposed by selective demolition operations.

5. Review areas where existing construction is to remain and requires protection.

1.5 INFORMATIONAL SUBMITTALS

A. Proposed Protection Measures: Submit report, including Drawings, that indicates the measures proposed for protecting individuals and property, for environmental protection, for dust control and, for noise control. Indicate proposed locations and construction of barriers.

B. Schedule of Selective Demolition Activities: Indicate the following:

1. Detailed sequence of selective demolition and removal work, with starting and ending dates for each activity. Ensure Government's on-site operations are uninterrupted.

2. Whether the previously installed temporary shoring will be utilized for some period of time, and timeline for removal.

3. Interruption of utility services. Indicate how long utility services will be interrupted.

4. Coordination for shutoff, capping, and continuation of utility services.

5. Coordination of The Government's continuing occupancy of portions of existing building and of The Government's partial occupancy of completed Work.

C. Predemolition Photographs or Video: Show existing conditions of adjoining construction, including finish surfaces, that might be misconstrued as damage caused by demolition operations.

Comply with Section 01 32 33 "Photographic Documentation." Submit before Work begins.

1.6 CLOSEOUT SUBMITTALS

A. Inventory: Submit a list of items that have been removed, salvaged, and turned over to the Government.

1.7 FIELD CONDITIONS

A. The Government will occupy portions of building immediately adjacent to selective demolition area. Conduct selective demolition so The Government's operations will not be disrupted.

B. Conditions existing at time of inspection for bidding purpose will be maintained by The

Government as far as practical.

CRLA – 248251 & 248252 02 41 19 - 3

C. Notify Contracting Officer of discrepancies between existing conditions and Drawings before proceeding with selective demolition.

D. Hazardous Materials: No known hazardous materials are present that are associated with this project. If a suspected hazardous material is encountered, do not disturb and notify the Contracting Officer.

E. Historic Areas: Demolition and hauling equipment and other materials shall be of sizes that clear surfaces within historic spaces, areas, rooms, and openings, including temporary protection, by 12 inches or more.

F. Storage or sale of removed items or materials on-site is not permitted.

G. Utility Service: Maintain existing utilities indicated to remain in service and protect them against damage during selective demolition operations.

1. Maintain fire-protection facilities in service during selective demolition operations.

1.8 COORDINATION

A. Arrange selective demolition schedule so as not to interfere with The Government's operations.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Regulatory Requirements: Comply with governing EPA notification regulations before beginning selective demolition. Comply with hauling and disposal regulations of authorities having jurisdiction.

B. Standards: Comply with ASSE A10.6 and NFPA 241.

2.2 REPAIR MATERIALS

A. Use repair materials identical to existing materials.

1. If identical materials are unavailable or cannot be used for exposed surfaces, use materials that visually match existing adjacent surfaces to the fullest extent possible.

2. Use materials whose installed performance equals or surpasses that of existing materials.

B. Comply with material and installation requirements specified in individual Specification Sections.

PART 3 - EXECUTION

CRLA – 248251 & 248252 02 41 19 - 4

3.1 EXAMINATION

A. Verify that utilities have been disconnected and capped before starting selective demolition operations.

B. Review Project Record Documents of existing construction or other existing condition and hazardous material information provided by The Government. The Government does not guarantee that existing conditions are same as those indicated in Project Record Documents.

C. Verify that hazardous materials have been remediated before proceeding with building demolition operations.

D. Survey of Existing Conditions: Record existing conditions by use of measured drawings preconstruction photographs or video and templates.

1. Inventory and record the condition of items to be removed and salvaged. Provide photographs or video of conditions that might be misconstrued as damage caused by salvage operations.

2. Before selective demolition or removal of existing building elements that will be reproduced or duplicated in final Work, make permanent record of measurements, materials, and construction details required to make exact reproduction.

3.2 UTILITY SERVICES AND MECHANICAL/ELECTRICAL SYSTEMS

A. Existing Services/Systems to Remain: Maintain services/systems indicated to remain and protect them against damage.

3.3 PROTECTION

A. Temporary Protection: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

1. Provide protection to ensure safe passage of people around selective demolition area and to and from occupied portions of building.

2. Provide temporary weather protection, during interval between selective demolition of existing construction on exterior surfaces and new construction, to prevent water leakage and damage to structure and interior areas.

3. Protect walls, ceilings, floors, and other existing finish work that are to remain or that are exposed during selective demolition operations.

4. Cover and protect furniture, furnishings, and equipment that have not been removed.

5. Comply with requirements for temporary enclosures, dust control, heating, and cooling specified in Section 01 50 00 "Temporary Facilities and Controls", and requirements for protection of installed construction in Section 01 73 40 “Execution.”

B. Temporary Shoring: Design, provide, and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

CRLA – 248251 & 248252 02 41 19 - 5

1. Strengthen or add new supports when required during progress of selective demolition.

C. Remove temporary barricades and protections where hazards no longer exist.

3.4 SELECTIVE DEMOLITION, GENERAL

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Proceed with selective demolition systematically, from higher to lower level. Complete selective demolition operations above each floor or tier before disturbing supporting members on the next lower level.

2. Neatly cut openings and holes plumb, square, and true to dimensions required. Use cutting methods least likely to damage construction to remain or adjoining construction.

Use hand tools or small power tools designed for sawing or grinding, not hammering and chopping. Temporarily cover openings to remain.

3. Cut or drill from the exposed or finished side into concealed surfaces to avoid marring existing finished surfaces.

4. Do not use cutting torches until work area is cleared of flammable materials. At concealed spaces, such as duct and pipe interiors, verify condition and contents of hidden space before starting flame-cutting operations. Maintain portable fire-suppression devices during flame-cutting operations.

5. Maintain fire watch during and for at least 24 hours after flame-cutting operations.

6. Maintain adequate ventilation when using cutting torches.

7. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site.

8. Remove structural framing members and lower to ground by method suitable to avoid free fall and to prevent ground impact or dust generation.

9. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.

10. Dispose of demolished items and materials promptly. Comply with requirements in

Section 01 74 19 "Construction Waste Management and Disposal."

B. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

C. Work in Historic Areas: In historic spaces, areas, and rooms, or on historic surfaces, the terms "demolish" or "remove" shall mean historic "removal" or "dismantling" as specified in Section 02 42 96 "Historic Removal and Dismantling."

D. Removed and Salvaged Items:

1. Clean salvaged items.

2. Pack or crate items after cleaning. Identify contents of containers.

3. Store items in a secure area until delivery to The Government.

4. Transport items to The Government's storage area in the park and as designated by The

Government.

CRLA – 248251 & 248252 02 41 19 - 6

5. Protect items from damage during transport and storage.

E. Removed and Reinstalled Items:

1. Clean and repair items to functional condition adequate for intended reuse.

2. Pack or crate items after cleaning and repairing. Identify contents of containers.

3. Protect items from damage during transport and storage.

4. Reinstall items in locations indicated. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

F. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by Contracting Officer, items may be removed to a suitable, protected storage location during selective demolition and cleaned and reinstalled in their original locations after selective demolition operations are complete.

3.5 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS

A. Roofing: Remove no more existing roofing than what can be covered in one day so that building interior remains watertight and weathertight. See Section 07 31 29 Wood Shingles and Shakes for new roofing requirements.

1. Remove existing roofing system as indicated in the drawings.

3.6 DISPOSAL OF DEMOLISHED MATERIALS

A. Remove demolition waste materials from Project site and recycle or dispose of them according to Section 01 74 19 "Construction Waste Management and Disposal."

1. Do not allow demolished materials to accumulate on-site.

2. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

3. Remove debris from elevated portions of building by chute, hoist, or other device that will convey debris to grade level in a controlled descent.

B. Burning: Do not burn demolished materials.

3.7 CLEANING

A. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

02 42 96 - 1

HISTORIC REMOVAL AND DISMANTLING CRLA – 248251 & 248252

SECTION 02 42 96 - HISTORIC REMOVAL AND DISMANTLING

A. Section includes historic treatment procedures in the form of special types of selective demolition work for designated historic spaces, areas, rooms, and surfaces and the following specific work:

1. Removal and dismantling of indicated portions of building or structure and debris hauling.

2. Removal and dismantling of indicated site elements and debris hauling.

3. Salvage of existing items to be reused, reinstalled, or recycled.

B. Related Requirements:

1. Section 06 03 12 “Historic Wood Repair” for repairing historic wood components requirements.

1.2 DEFINITIONS

A. Dismantle: To disassemble or detach a historic item from a surface, or a non-historic item from a historic surface, using gentle methods and equipment to prevent damage to historic items and surfaces; disposing of items unless indicated to be salvaged or reinstalled.

B. Existing to Remain: Existing items that are not to be removed or dismantled, except to the degree indicated for performing required Work.

C. Remove: To take down or detach a non-historic item located within a historic space, area, or room, using methods and equipment to prevent damage to historic items and surfaces; disposing of items unless indicated to be salvaged or reinstalled.

D. Retain: To keep existing items that are not to be removed or dismantled.

E. Salvage: To protect removed or dismantled items and deliver them to Owner ready for reuse, or to be reinstalled.

1.3 PRECONSTRUCTION MEETINGS

A. Preconstruction Conference(s): Conduct conference(s) at Project site.

1. Review minutes of Preliminary Historic Treatment Conference that pertain to removal and dismantling procedures and protection of historic areas and surfaces.

2. Review list of items indicated to be salvaged.

3. Verify qualifications of personnel assigned to perform removal and dismantling.

4. Inspect and discuss condition of each construction type to be removed or dismantled.

5. Review requirements of other work that depends on condition of substrates exposed by removal and dismantling work.

6. Review methods and procedures related to removal and dismantling work, including, but not limited to, the following:

02 42 96 - 2

a. Historic removal and dismantling specialist's personnel, equipment, and facilities needed to make progress and avoid delays.

b. Materials, material application, sequencing, tolerances, and required clearances.

c. Fire prevention.

d. Coordination with building occupants.

1.4 ACTION SUBMITTALS

A. Preconstruction Documentation: Show preexisting conditions of adjoining construction and site improvements, including finish surfaces, that might be misconstrued as damage caused by Contractor's removal and dismantling operations, through photos and video recordings specified elsewhere in this Section.

B. Removal and Dismantling Historic Treatment Program: Submit 30 days before work begins.

C. List of Items Indicated to Be Salvaged: Prepare a list of items indicated on Drawings to be salvaged for Owner's use or for reinstallation. Submit 15 days before preconstruction conference.

D. Inventory of Salvaged Items: After removal or dismantling work is complete, submit a list of items that have been salvaged.

1. Include item description, item condition, number of items if more than one of a type, and tag number. Include photo of item in original location.

2. Document (map) exact location of salvaged items so that they can be reinstalled in the same location.

3. As work proceeds, include on the inventory items that were indicated to be salvaged and items of historic importance discovered during the work. Document reasons, if any, why an item indicated to be salvaged was not salvaged.

A. Qualification Data: For historic removal and dismantling specialist and historic removal and dismantling specialist's field supervisors.

1.6 QUALITY ASSURANCE

A. Historic Removal and Dismantling Specialist Qualifications: An experienced firm, or individual within the firm, with the required certifications and training that can demonstrate through past performance that they are qualified to perform this work. General selective demolition experience is insufficient experience for historic removal and dismantling work.

B. Removal and Dismantling Historic Treatment Program: Prepare a written, detailed description of materials, methods, equipment, and sequence of operations to be used for each phase of removal and dismantling work, including protection of surrounding and substrate materials and Project site.

1. Dust and Noise Control: Include locations of proposed temporary dust- and noise-control partitions and means of egress from occupied areas coordinated with continuing on-site operations and other known work in progress.

02 42 96 - 3

2. Debris Hauling: Include plans clearly marked to show debris hauling routes, turning radii, and locations and details of temporary protective barriers.

C. Regulatory Requirements: Comply with notification regulations of authorities having jurisdiction before beginning removal and dismantling work. Comply with hauling and disposal regulations of authorities having jurisdiction.

1.7 FIELD CONDITIONS

A. Conditions existing at time of inspection for bidding purpose will be maintained by Owner as far as practical.

1. Before removal and dismantling, Government will remove items listed in Section 02 41 19

Selective Demolition.

B. Notify Contracting Officer of discrepancies between existing conditions and Drawings before proceeding with removal and dismantling work.

C. Storage or sale of removed or dismantled items on-site is not permitted unless otherwise indicated.

PART 2 - PRODUCTS - (Not Used)

3.1 HISTORIC REMOVAL AND DISMANTLING EQUIPMENT

A. Removal Equipment: Use only hand-held tools, except as follows or unless otherwise approved by Contracting Officer on a case-by-case basis:

B. Dismantling Equipment: Use manual, hand-held tools, except as follows or otherwise approved by Contracting Officer on a case-by-case basis:

1. Hand-held power tools and cutting torches are permitted only as submitted in the historic treatment program. They must be adjustable so as to penetrate or cut only the thickness of material being removed.

2. Pry bars more than 18 inches long and hammers weighing more than 2 lb are not permitted for dismantling work.

3.2 EXAMINATION

A. Preparation for Removal and Dismantling: Examine construction to be removed or dismantled to determine best methods to safely and effectively perform removal and dismantling work.

Examine adjacent work to determine what protective measures are necessary. Make explorations, probes, and inquiries as necessary to determine condition of construction to be removed or dismantled and location of utilities and services to remain that may be hidden by construction that is to be removed or dismantled.

1. Verify that affected utilities are disconnected and capped.

02 42 96 - 4

2. Inventory and record the condition of items to be removed and dismantled for reinstallation or salvage. Enter this information on the submittal of inventory of salvaged items.

3. Before removal or dismantling of existing building elements that will be reinstalled, reproduced or duplicated in final Work, make permanent record of locations, configurations, measurements, materials, and construction details of each piece required to make exact reproduction. Tag or label each piece in a manner suitable for the material.

B. Documentation of Existing Conditions: Record existing conditions by use of preconstruction photographs and preconstruction video recordings.

C. Perform surveys as the Work progresses to detect hazards resulting from historic removal and dismantling procedures.

3.3 HISTORIC REMOVAL AND DISMANTLING

A. General: Have removal and dismantling work performed by a qualified historic removal and dismantling specialist. Ensure that historic removal and dismantling specialist's field supervisors are present when removal and dismantling work begins and during its progress.

B. Perform work according to the historic treatment program and approved mockup(s).

1. Perform removal and dismantling to the limits indicated.

2. Provide supports or reinforcement for existing construction that becomes temporarily weakened by removal and dismantling work, until the Project Work is completed unless otherwise indicated.

3. Perform cutting by hand or with small power tools wherever possible. Cut holes and slots neatly to size required, with minimum disturbance of adjacent work.

4. Do not operate air compressors inside building unless approved by Contracting Officer in each case.

5. Do not drill or cut columns, beams, joints, girders, structural slabs, or other structural supporting elements, without having Contractor's professional engineer's written approval for each location before such work is begun.

6. Dispose of removed and dismantled items off-site unless indicated to be salvaged or reinstalled.

C. Water-Mist Sprinkling: Use water-mist sprinkling and other wet methods to control dust only with adequate, approved procedures and equipment according to the historic treatment program to ensure that such water does not create a hazard or adversely affect other building areas or materials.

D. Unacceptable Equipment: Keep equipment that is not permitted for historic removal or dismantling work away from the vicinity where such work is being performed.

E. Removing and Dismantling Items on or Near Historic Surfaces:

1. Use only dismantling equipment and procedures within 12 inches of historic surface. Do not use pry bars. Protect historic surface from contact with or damage by tools.

2. Unfasten items in the opposite order from which they were installed.

3. Support each item as it becomes loosened to prevent stress and damage to the historic surface.

4. Dismantle anchorages.

02 42 96 - 5

END OF SECTION 02 42 96

06 03 12 - 1

HISTORIC WOOD REPAIR CRLA – 248251 & 248252

SECTION 06 03 12 - HISTORIC WOOD REPAIR

A. Work for this Project involves the restoration of a historic structure. Treat the building and site respectfully. Carefully respect existing conditions and treat existing materials as irreplaceable.

Do not remove, alter or disfigure any existing materials, elements or finishes unless indicated on the Drawings or in the Specifications. If any work impacts existing materials or finishes to remain, notify Contracting Officer in writing at least ten days in advance of the start of the work, and obtain written response prior to proceeding with the work.

B. Section includes historic treatment of wood in the form of repairing wood features as follows:

1. Repairing exterior and interior wood members/trim.

1.2 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at Project site.

1. Review the Historic Preservation Treatment Plan that pertains to historic wood repair.

2. Review methods and procedures related to historic wood repair, including, but not limited to, the following:

a. Historic treatment specialist's personnel, equipment, and facilities needed to make progress and avoid delays.

b. Materials, material application, sequencing, tolerances, and required clearances.

c. Fire-protection plan.

d. Wood Historic Treatment Program.

1.3 SEQUENCING AND SCHEDULING

A. Perform historic wood repair in the following sequence, which includes work specified in this and other Sections:

1. Before removing wood components for on-site or off-site repair, tag each component with location-identification numbers. Indicate on tags and building plans the locations of each component.,

2. Dismantle hardware and tag with location-identification numbers.

3. In the shop, label each repaired component and whole or partial replacement with permanent location-identification number in inconspicuous location and remove site-applied tags.

4. Sort units by condition, separating those that need extensive repair.

5. Clean surfaces.

6. General Wood-Repair Sequence:

06 03 12 - 2

a. Remove paint or stain and varnish to bare wood.

b. Repair wood by consolidation, replacement, partial replacement, and patching.

c. Sand, prime, fill, sand again, and prime surfaces again for refinishing.

7. Reinstall components.

8. Apply finish coats.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include recommendations for product application and use. Include test data substantiating that products comply with requirements.

B. Sustainable Design Submittals:

1. Product Certificates: For regional materials, indicating location of material manufacturer and point of extraction, harvest, or recovery for each raw material. Include distance to Project and cost for each regional material.

2. Chain-of-Custody Certificates: For wood certified by the Forest Stewardship Council (FSC), Sustainable Forestry Institute (SFI), American Tree Farm System (ATFS), or Program for the Endorsement of Forest Certification (PEFC). Include statement of costs.

3. Chain-of-Custody Qualification Data: For manufacturer and vendor.

C. Shop Drawings:

1. Include plans, elevations, and sections showing locations and extent of repair and replacement work, with enlarged details of replacement parts indicating materials, profiles, joinery, reinforcing, method of splicing or attaching wood members to other surfaces, accessory items, and finishes.

2. Include field-verified dimensions and the following:

a. Full-size shapes and profiles with complete dimensions for replacement components and their jointing, showing relationship of existing components to new components.

b. Templates and directions for installing anchorages.

c. Identification of each new unit and its corresponding location in the building on annotated plans and elevations.

D. Samples for Verification: For the following products in manufacturer's standard sizes unless otherwise indicated, finished as required for use in the Work:

1. Replacement Wood: 12-inch-long, full-size molding sections with applied finish.

a. Additional Samples of replacement members that show fabrication techniques, materials, and finishes as requested by Contracting Officer.

2. Repaired Wood: Prepare Samples using existing wood removed from site, repaired, and prepared for refinishing.

3. Refinished Wood: Prepare Samples using existing wood removed from site, repaired, and refinished.

06 03 12 - 3

A. Qualification Data: For historic treatment specialist including workers and wood-repair-material manufacturer.

B. Wood Historic Treatment Program: Submit before work begins.

A. Historic Treatment Specialist Qualifications: A qualified historic wood-repair specialist, experienced in repairing, refinishing, and replacing wood in whole and in part. Experience only in fabricating and installing new woodwork is insufficient experience for wood historic treatment work.

B. Wood-Repair-Material Manufacturer Qualifications: A firm regularly engaged in producing wood consolidant and wood-patching compound that have been used for similar historic wood-treatment applications with successful results, and with factory-authorized service representatives who are available for consultation, Project-site inspection, and on-site assistance.

C. Wood Historic Treatment Program: Prepare a written, detailed description of materials, methods, equipment, and sequence of operations to be used for historic treatment work, including protection of surrounding materials and Project site.

1. If materials and methods other than those indicated are proposed for any phase of historic treatment work, add a written description of such materials and methods, including evidence of successful use on comparable projects, and demonstrations to show their effectiveness for this Project.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Pack, deliver, and store products in suitable packs, heavy-duty cartons, or wooden crates; surround with…