Loading...
HomeMy WebLinkAbout02 41 19-Selective Structure DemolitionBEARDSLEY DESIGN ASSOCIATES CORNELL - NCP SELECTIVE STRUCTURE DEMOLITION STANDARD SPECIFICATIONS 02 41 19 - PAGE 1 OF 6 MARCH 29, 2013 SECTION 024119 - SELECTIVE STRUCTURE DEMOLITION PART 1 GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division-01 General Requirements Specification Sections, apply to this Section. 1.2 SUMMARY A. This Section includes the following: 1. Demolition and removal of selected portions of building or structure. 2. Salvage of existing items to be reused or recycled. 1.3 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 ready for reuse. 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. 1.4 SUBMITTALS A. 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 Owner's building manager's on-site operations are uninterrupted. 2. Interruption of utility services. Indicate how long utility services will be interrupted. 3. Coordination for shutoff, capping, and continuation of utility services. 4. Use of elevator and stairs. 5. Locations of proposed dust- and noise-control temporary partitions and means of egress. BEARDSLEY DESIGN ASSOCIATES CORNELL - NCP SELECTIVE STRUCTURE DEMOLITION STANDARD SPECIFICATIONS 02 41 19 - PAGE 2 OF 6 MARCH 29, 2013 6. Coordination of Owner's continuing occupancy of portions of existing building and of Owner's partial occupancy of completed Work. 7. Means of protection for items to remain and items in path of waste removal from building. 1.5 QUALITY ASSURANCE 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 ANSI A10.6 and NFPA 241. C. Predemolition Conference: Conduct conference at Project site, Review methods and procedures related to selective demolition including, but not limited to, the following: 1. Inspect and discuss condition of construction to be selectively demolished. 2. Review requirements of work performed by other trades that rely on substrates exposed by selective demolition operations. 3. Review areas where existing construction is to remain and requires protection. 1.6 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. 1. Comply with requirements specified in Division 01 Section "Summary." B. Notify Architect of discrepancies between existing conditions and Drawings before proceeding with selective demolition. C. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work. 1. Hazardous materials will be removed by Owner before start of the Work. 2. If materials suspected of containing hazardous materials are encountered, do not disturb; immediately notify Architect and Owner. Owner will remove hazardous materials under a separate contract. D. Hazardous Materials: It is unknown whether hazardous materials will be encountered in the Work. 1. If materials suspected of containing hazardous materials are encountered, do not disturb; immediately notify Architect and Owner. Owner will remove hazardous materials under a separate contract. BEARDSLEY DESIGN ASSOCIATES CORNELL - NCP SELECTIVE STRUCTURE DEMOLITION STANDARD SPECIFICATIONS 02 41 19 - PAGE 3 OF 6 MARCH 29, 2013 E. Hazardous Materials: Hazardous materials are present in construction to be selectively demolished. A report on the presence of hazardous materials is on file for review and use. Examine report to become aware of locations where hazardous materials are present. 1. Hazardous material remediation is specified elsewhere in the Contract Documents. 2. Do not disturb hazardous materials or items suspected of containing hazardous materials except under procedures specified elsewhere in the Contract Documents. 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. PART 2 PRODUCTS (Not Used) PART 3 EXECUTION 3.1 EXAMINATION A. Verify that utilities have been disconnected and capped. B. Survey existing conditions and correlate with requirements indicated to determine extent of selective demolition required. C. 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. 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. 1. Comply with requirements for existing services/systems interruptions specified in Division 01 Section "Summary." 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 BEARDSLEY DESIGN ASSOCIATES CORNELL - NCP SELECTIVE STRUCTURE DEMOLITION STANDARD SPECIFICATIONS 02 41 19 - PAGE 4 OF 6 MARCH 29, 2013 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. Cap, valve, or plug and seal remaining portion of pipe or conduit after bypassing. a. Where entire wall is to be removed, existing services/systems may be removed with removal of the wall. 3.3 PREPARATION A. 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. B. Temporary Facilities: Provide temporary barricades and other protection products and measures to prevent injury to people and damage to adjacent buildings, adjacent finishes and utilities/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. Provide clean room type walk-off sticky protective floor mats at entrances/exit to Telecommunications Rooms during demolition, reconstruction and finishing operations. Mats shall have at least 40 tear off adhesive sheets and be a minimum of 40” long – to help remove dirt, dust, grit, and contaminants from soles and wheels - on contact. 5. Cover and protect furniture, furnishings, and equipment that have not been removed. 6. Comply with requirements for temporary enclosures, dust control, heating, and cooling specified in Division 01, Section 015000 - "Temporary Facilities and Controls." C. 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. 1. Strengthen or add new supports when required during progress of selective demolition. 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: BEARDSLEY DESIGN ASSOCIATES CORNELL - NCP SELECTIVE STRUCTURE DEMOLITION STANDARD SPECIFICATIONS 02 41 19 - PAGE 5 OF 6 MARCH 29, 2013 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, to minimize disturbance of adjacent surfaces. 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 fire watch and portable fire-suppression devices during flame-cutting operations. 5. Maintain adequate ventilation when using cutting torches. 6. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site. 7. Remove structural framing members and lower to ground by method suitable to avoid free fall and to prevent ground impact or dust generation. 8. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing. 9. Dispose of demolished items and materials promptly. B. 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 on-site. 5. Protect items from damage during transport and storage. C. 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. D. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by Architect, 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. BEARDSLEY DESIGN ASSOCIATES CORNELL - NCP SELECTIVE STRUCTURE DEMOLITION STANDARD SPECIFICATIONS 02 41 19 - PAGE 6 OF 6 MARCH 29, 2013 3.5 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS A. Concrete: Demolish in sections. Cut concrete full depth at junctures with construction to remain and at regular intervals, using power-driven saw, then remove concrete between saw cuts. B. Masonry: Demolish in small sections. Cut masonry at junctures with construction to remain, using power-driven saw, then remove masonry between saw cuts. C. Concrete Slabs-on-Grade: Saw-cut perimeter of area to be demolished, then break up and remove. D. Resilient Floor Coverings: Remove floor coverings and adhesive according to recommendations in RFCI-WP and its Addendum. 1. Remove residual adhesive and prepare substrate for new floor coverings by one of the methods recommended by RFCI. E. Air-Conditioning Equipment: Remove equipment without releasing refrigerants. 3.6 DISPOSAL OF DEMOLISHED MATERIALS A. General: Except for items or materials indicated to be reused, salvaged, reinstalled, or otherwise indicated to remain Owner's property, remove demolished materials from Project site and legally dispose of them in an EPA- approved landfill. 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 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 024119