02 41 19 Selective Demolition.pdf

Lamar Community College Repair Roof and Ceiling, Indoor Arena, and Stalls Project Number: 2024-077M23

SELECTIVE DEMOLITION (Bid & Const. Set) 02 41 19 - 1

SECTION 02 41 19 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Photo documentation of existing conditions.

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

3. Demolition and removal of selected site elements.

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

B. In addition to demolition specifically shown, cut, move, and remove items as necessary to provide access or to allow alterations and new work to proceed. Include such items as:

1. Repair or removal of hazardous or unsanitary conditions.

2. Removal of abandoned items and items serving no useful purpose, such as abandoned piping, conduit and wiring.

3. Removal of unsuitable or extraneous materials not marked for salvage, such as abandoned furnishings and equipment, and debris such as rotted wood, rusted metals, and deteriorated concrete.

4. Minor Electrical and Mechanical temporary removals/replacements to accommodate the work.

5. Cleaning of surfaces, and removal of surface finishes, as needed to install new work and finishes.

C. Work Sequence and Planning: See Division 1 Specification Sections for additional information on the requirements for careful work planning, sequencing, and work performance.

D. Related Requirements:

1. See Division 0 “General Conditions” for encounter of hazardous materials.

2. See Division 2 “Asbestos Abatement” for Delegated Design and abatement of ACM.

3. See Division 1 Sections “Execution Requirements” and “Cutting and Patching” for additional requirements.

1.2 DEFINITIONS

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

B. Remove and Salvage: Detach items from existing construction and deliver them to Owner.

C. Remove and Reinstall: Detach items from existing construction, prepare them for reuse, and reinstall them where indicated.

D. Existing to Remain: Existing items of construction that are not to be removed and that are not otherwise indicated to be removed, removed and salvaged, or removed and reinstalled.

SELECTIVE DEMOLITION (Bid & Const. Set) 02 41 19 - 2

1.3 SUBMITTALS

A. Pre-demolition Photographs or Video Recordings: Show existing conditions of adjoining construction and site improvements, including finish surfaces that might be misconstrued as damaged caused by selective demolition operations.

B. Landfill Records: Indicate receipt and acceptance of hazardous wastes by a landfill facility licensed to accept hazardous wastes.

C. Statement of Refrigerant Recovery: Signed by Certified refrigerant recovery technician.

1.4 QUALITY ASSURANCE

A. Demolition Firm Qualifications: An experienced firm that has specialized in demolition work similar in material and extent to that indicated for this Project.

B. Refrigerant Recovery Technician Qualifications: Certified by an EPA-approved certification program.

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

D. Obtain required permits from authorities, including but not limited to Right-of Way encroachments, hot-work permits, hazardous material disturbance/abatement permits and hauling or disposal permits.

E. Standards: Comply with ANSI/ASSP A10.6 and NFPA 241.

F. Pre-demolition Conference: Conduct conference at Project site.

1.5 PROJECT CONDITIONS

A. Owner will occupy portions of building immediately adjacent to selective demolition area.

Conduct selective demolition so Owner's operations will not be disrupted.

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

1. The drawings indicate items that will be removed / demolished by Owner. Coordinate this work with Owner as necessary.

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

D. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work. See General Conditions for additional clarifications.

1. If materials suspected of containing hazardous materials are encountered, do not disturb;

immediately notify Architect and Owner. Owner may elect to remove or abate hazardous materials under a separate contract.

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

SELECTIVE DEMOLITION (Bid & Const. Set) 02 41 19 - 3

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 and smoke-detection facilities in service during selective demolition operations.

H. Do not close or obstruct exits without Jurisdictional and Owner approval.

1.6 WARRANTY

A. Existing Warranties: Remove, replace, patch, and repair materials and surfaces cut or damaged during selective demolition, by methods and with materials and using approved contractors so as not to void existing warranties.

1. There are no known existing warranties at this time.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 EXAMINATION

A. Photodocumentation: Before commencement of the Work, take photographs of Project site and surrounding areas, including existing items to remain during construction, from different vantage points, as necessary to document condition of existing items to remain for purposes of determining if any damage was the result of construction activities.

B. Verify that utilities have been disconnected and capped.

C. Survey existing conditions and correlate with requirements indicated to determine extent of selective demolition required. Inventory and record the condition of items to be removed and reinstalled and items to be removed and salvaged.

D. When unanticipated mechanical, electrical, or structural elements that conflict with intended function or design are encountered, investigate and measure the nature and extent of conflict.

Promptly submit a written report to Architect.

E. Engage a professional engineer to survey condition of building to determine whether removing any element might result in structural deficiency or unplanned collapse of any portion of structure or adjacent structures during selective demolition operations.

F. Perform surveys as the Work progresses to detect hazards resulting from selective demolition activities.

3.2 UTILITY SERVICES AND MECHANICAL/ELECTRICAL SYSTEMS

A. Existing Services/Systems: Maintain services/systems indicated to remain and protect them against damage during selective demolition operations.

SELECTIVE DEMOLITION (Bid & Const. Set) 02 41 19 - 4

1. If existing utility interruptions are necessary schedule interruptions of building utilities for hours when building is closed to normal operations, i.e., weekends, evenings, etc. Notify Owner a minimum of 48 hours in advance of all utility interruptions, including those scheduled for off hours.

2. If temporary removal / replacement of any electrical wiring or components or mechanical system equipment or components is necessary, work shall only be performed by a licensed subcontractor specializing in electrical or mechanical trades.

B. Service/System Requirements: Locate, identify, disconnect, and seal or cap off indicated utility services and mechanical/electrical systems serving areas to be selectively demolished.

1. Arrange to shut off indicated utilities with utility companies.

2. If services/systems are required to be removed, relocated, or abandoned, before proceeding with selective demolition provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to other parts of building.

3. Cut off pipe or conduit in walls or partitions to be removed. Drain, cap, valve, or plug and seal remaining portion of pipe or conduit after bypassing with same or compatible piping or conduit material.

4. Ducts to Be Removed or Abandoned: Remove portion of ducts indicated to be removed and plug remaining ducts with same or compatible similar ductwork material.

3.3 PREPARATION

A. Planning, Scheduling and Performance of Work: See Division 1 specifications for more specific requirements. This project involves the complete removal and replacement of the roofing panels and insulation. This will leave the building open and vulnerable to exterior environmental and weather conditions. As such, contractor shall only schedule and perform demolition of roofing to the extent that it can be reconstructed within the same day. Contractor is solely responsible for managing workflow and labor production to achieve this requirement.

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.

1. Comply with requirements for access and protection specified in Division 1 Section "Temporary Facilities and Controls."

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

D. Temporary Shoring: 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. Strengthen or add new supports when required during progress of removal work.

E. Refrigerant: Before starting demolition, remove refrigerant from mechanical equipment according to 40 CFR 82 and regulations of authorities having jurisdiction.

SELECTIVE DEMOLITION (Bid & Const. Set) 02 41 19 - 5

3.4 SELECTIVE DEMOLITION – GENERAL

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Do not demolish building elements beyond what is indicated on Drawings without Architect's approval. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. 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, to minimize disturbance of adjacent surfaces. Temporarily cover openings to remain.

2. Do not use explosives.

3. Break concrete and masonry into sections less than 3 feet in any dimension.

4. Nuisance Dust Control:

a. Demolition debris that contains dust or other material that could become airborne or create a nuisance shall either be removed from the work site daily, or shall be covered and secured with tarps or sheeting until removed from the site.

b. Apply a water mist, or other means approved by the Owner, on debris to control or mitigate airborne dust or airborne nuisances, unless the material will become friable (i.e., crumble easily) or will dissolve in water. Friable material and material that may dissolve in water shall be securely covered with tarps or sheeting.

c. Demolition debris that becomes friable when wetted or will dissolve in water shall be stored only on impervious surfaces, field-installed ground sheeting, or other barriers.

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

6. 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 fire watch and portable fire-suppression devices during flame-cutting operations and for duration as required by jurisdictional or owner required hot-work permits (or in absence of a hot-work permit, a minimum of 6 hours).

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

8. Dispose of demolished items and materials promptly and properly.

B. Protection of Existing Facilities and Contents: Contractor shall take necessary precautions to protect existing building elements including interior spaces and contents below the associated roofing work. Specifically, Contractor shall provide and perform necessary temporary sealing techniques to prevent water and wind intrusion and mitigate/minimize debris/dust infiltration into the building through joints and openings in the roof structure.

1. Contractor is solely responsible for providing adequate preventative methods / techniques / materials to minimize the infiltration of water, dust and debris during the demolition processes.

2. Contractor is advised that weather and wind conditions at this project site can change often and rapidly. Simple plastic sheeting exterior containment may not be sufficient protection to keep the building weather-tight and secure the interior of the building from wind events.

C. Existing Facility Elements and Contents to Remain: Protect all construction and contents indicated to remain against damage and soiling during selective demolition and construction activities. At the Contractor’s option, and when permitted by the Owner, SELECTIVE DEMOLITION (Bid & Const. Set) 02 41 19 - 6 items may be removed at the Contractor’s expense to a suitable, protected storage location during selective demolition and cleaned and reinstalled in their original locations after demolition and construction operations are complete.

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 Owner.

4. Transport items to Owner's storage area designated by Owner.

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. Paint equipment to match new equipment.

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 structures, facilities, contents etc. that are damaged or removed due to required construction work, shall be patched, repaired, or replaced, and be left in their original state of repair by the Contractor, to satisfaction of the Architect and Owner.

3.5 SELECTIVE DEMOLITION OF SITE ELEMENTS AND UNDERGROUND UTILITIES

A. General: Protect trees and plants remaining on-site. Repair or replace trees, shrubs, and other vegetation indicated to remain or be relocated that are damaged by construction operations, in a manner approved by Architect and Owner.

Protect other site features indicated to remain in a manner acceptable to the Architect and Owner.

1. Unit Pavers:

2. Light Poles:

3. Fencing:

4. Landscape Features: (Boulders, etc)

5. Irrigation Systems:

6. Underground Utilities: (Geo-thermal well field, Storm Drainage, Sanitary Sewer, Electrical, Communications, Gas)

3.6 DISPOSAL OF DEMOLISHED MATERIALS

A. General: Except for items or materials indicated to be recycled, reused, salvaged, reinstalled, or otherwise indicated to remain Owner's property, remove demolished materials from Project site in accordance with local, state, and federal laws and regulations, and legally dispose of them in an EPA-approved landfill.

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

2. Transport demolished materials off Owner's property and legally dispose of them.

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

4. Do not burn demolished materials.

SELECTIVE DEMOLITION (Bid & Const. Set) 02 41 19 - 7

5. Comply with documentation requirements specified in Division 1 Sections "Closeout Procedures."

B. Separate recyclable materials produced during selective demolition from other nonrecyclable materials. Store or stockpile without intermixing with other materials and transport them to recycling facilities.

1. Recycle all allowable metal roofing panels and metal roofing accessories that are removed.

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.

END OF SECTION 02 41 19