DIVISION 02 SELECTIVE DEMOLITION

Transcription

1 DIVISION 02 SELECTIVE DEMOLITION

2 SECTION SELECTIVE DEMOLITION PART 1 - GENERAL 1.01 SUMMARY A. This Section includes the following: 1. Demolition and removal of selected portions of a building. 2. Demolition and removal of selected building elements. 3. Saw cutting/core drilling 4. Patching and repairs. B. Related Sections: The following also contain requirements that relate to this Section: 1.02 DEFINITIONS 1. Division 0 Specifications and Notes on the Contract Drawings also clarify use of the building and phasing requirements. 2. Division 23 Sections for cutting, patching, or relocating and replacing mechanical items and installing new equipment and installations. 3. Division 26 Sections for cutting, patching, or relocating and replacing electrical items and installing new equipment and installations. A. Remove: Remove and legally dispose of items except those indicated to be reinstalled, salvaged, or to remain the Owner s property. B. Existing to Remain: Protect construction indicated to remain against damage and soiling during selective demolition MATERIALS OWNERSHIP A. Except for items or materials indicated to be reused, salvaged, reinstalled, or otherwise indicated to remain the Owner s property, demolished materials shall become the Contractor s property and shall be removed from the site with further disposition at the Contractor s option QUALITY ASSURANCE AND PROTECTION A. Regulatory Requirements: Comply with governing EPA notification regulations before starting selective demolition. Comply with hauling and disposal regulations of authorities having jurisdiction. B. Coordinate all hazardous material demolition with the Mississippi Division of Environmental Quality (MDEQ) with their mandatory prior notice requirement (minimum 10 days). OCTOBER 2017 SELECTIVE DEMOLITION PAGE 1 OF 5

3 C. The Contractor shall provide for a safe and secure healthy working environment at all times per OSHA, local code and safe practice. Refer to the Hazardous Material Survey Report attached hereto. D. Temporary barrier, railing fencing, etc. shall be provided and a safely installed to limit access to unauthorized personnel to work areas, limit the spread of construction duct/debris to User occupied spaces, and security for construction trailers, equipment and supplies. E. Any Owner furniture, especially cloth materials, shall be substantially protected. Contractor shall cover all furniture and protect blinds, curtains, etc. in demolition and other areas where demolition occurs or where construction routes and/or dust may be interactive PROJECT CONDITIONS A. Owner shall occupy building continually during construction. B. Owner will occupy all buildings and grounds immediately adjacent to this building and some selective demolition areas. Conduct selective demolition so that Owner s operations will not be disrupted. Provide not less than 72 hours prior notice to Owner of activities that will affect Owner s operations, including traffic dust, noise, etc. C. Owner assumes no responsibility for actual condition of buildings or systems to be selectively demolished. D. Asbestos and Lead Based Paint: If any materials suspected of containing asbestos are encountered, do not disturb the materials. Immediately notify the Professional and the Owner. See Hazardous Material Survey Report attached hereto. E. Storage or sale of removed items or materials on-site will not be permitted. F. Removal, relocation of some of the furniture in construction areas shall be by Using Agency. The remainder of furniture, fixtures and built-ins shall be protected by the Contractor during all construction. All areas, furniture and fixtures left in the construction area shall be daily cleaned and thereafter comprehensively cleaned after construction is complete in each space or room, at the Contractor s expense SCHEDULING A. Arrange selective demolition schedule so as not to interfere with Owner s on-site operations. Significant nighttime, after hours, and weekend work should be expected WARRANTY A. Existing Special Warranty: Remove, replace, patch, and repair materials and surfaces cut or damaged during selective demolition, by methods and with materials so as not to void existing warranties and to provide a neat finish to match existing adjacent finishes and material. PART 2 - PRODUCTS 2.01 REPAIR MATERIALS OCTOBER 2017 SELECTIVE DEMOLITION PAGE 2 OF 5

4 A. Use repair materials identical to existing materials. PART 3 - EXECUTION 3.01 EXAMINATION 1. Where identical materials are unavailable or cannot be used for exposed surfaces, use materials that visually match existing adjacent surfaces to the fullest extent possible as approved by Professional A. Verify that utilities have been disconnected and capped, as appropriate, to safety protect occupants and the facilities. B. Survey existing conditions and correlate with requirements indicated to determine extent of selective demolition required. Minimally demolish to match the extent to adequately access for repair or replacement work necessary. C. When unanticipated mechanical, electrical, or structural elements that conflict with the intended function or design are encountered, investigate and measure the nature and extent of the conflict. Promptly submit a written report to the Professional and provide suggested remedial action and cost estimate(s). D. Survey the condition of the building to determine whether removing any element might result in structural deficiency or unplanned collapse of any portion of the structure or adjacent structures during selective demolition. Contact the Professional immediately if an unsafe condition is noted. Protect people first and foremost UTILITY SERVICES A. Maintain existing utilities indicated to remain in service and protect them against damage during selective demolition operations PREPARATION 1. Do not interrupt existing utilities serving occupied or operating facilities, except when authorized in writing by Owner and authorities having jurisdiction. Provide temporary services during interruptions to existing utilities, as acceptable to Owner and to governing authorities. a. Provide not less than seven (7) days written prior notice to Owner if shutdown of service is required during any changeover, replacement, repair, etc. b. Utility Requirements: Refer to Division 20, 22, 23 and 26 Sections for shutting off, disconnecting, removing, and sealing or capping utility services. Do not start selective demolition work until utility disconnecting and sealing have been completed and verified in writing. A. Conduct demolition operations to prevent injury to people and damage to adjacent buildings and facilities to remain. Ensure safe passage of unauthorized non construction personnel around selective demolition area(s). OCTOBER 2017 SELECTIVE DEMOLITION PAGE 3 OF 5

5 1. Erect temporary protection, such as walks, fences railings, canopies, temporary construction barriers, and covered passageways, where required by authorities having jurisdiction. 2. Provide temporary weather protection, during interval between demolition and removal of existing construction, on exterior surfaces and new construction to ensure that no water leakage or damage occurs to structure or interior areas SELECTIVE DEMOLITION A. Demolish and remove existing construction only to the extent required by new construction and as indicated for renovation, etc. Use methods required to complete work within limitations of governing regulations, high quality of Standard of Care, and as follows: 1. Proceed with selective demolition systematically, from higher to lower level. Complete selective demolition work above each floor or tier before disturbing supporting members on lower levels. 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. To minimize disturbance of adjacent surfaces, use hand 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 firesuppression devices during flame-cutting operations. 5. Maintain adequate ventilation when using cutting torches, welding, brazing, soldering, etc. 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 methods suitable to avoid free fall and to prevent ground impact or dust generation. 8. Locate selective demolition equipment throughout the structure 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. On-site storage or sale of removed items is prohibited. 10. Return elements of construction and surfaces to remain to condition existing before start of selective demolition operations. OCTOBER 2017 SELECTIVE DEMOLITION PAGE 4 OF 5

6 B. Demolish concrete and masonry in small sections. Cut concrete at junctures with construction to remain, using power-driven masonry saw or hand tools; do not use power-driven impact tools during Owner s normal building use periods. C. Break up and remove concrete slabs on grade, as shown. D. Remove resilient floor coverings and adhesive according to recommendations of the Resilient Floor Covering Institute s (RFCI) Recommended Work Practices for the Removal of Resilient Floor Coverings and Addendum. 1. Remove residual adhesive and prepare substrate for new floor coverings by one of the methods recommended by RFCI. E. Remove no more existing walls or roofing than can be promptly covered and interior areas protected. F. Remove air-conditioning equipment without releasing refrigerants. Recover all refrigerants and oils per governing codes. G. Provide temporary walls and seal air tight between construction areas and Owner occupied spaces. Construction barriers shall be provided where shown and as required, per Professional directive PATCHING AND REPAIRS A. Patching is specified in Division 1 and on Drawings 3.06 DISPOSAL OF DEMOLISHED MATERIALS A. General: Promptly dispose of demolished materials to an appropriate disposal site per local code requirements. Do not allow demolished materials to accumulate on-site or in building renovation areas. B. Burning: Do not burn demolished materials on-site. C. Promptly haul off debris and demolition and unused construction material and equipment CLEANING A. Sweep the building, equipment room and outdoor concrete spaces, broom clean and provide for a thorough comprehensive vacuuming and dust removal on completion of selective demolition operation, at minimum daily intervals and prior to next day Owner occupancy of premises. B. All areas affected by construction dust shall be thoroughly cleaned. All furniture, plumbing and light fixtures, wall, ceiling, and floor surfaces shall be cleaned. --END OF SECTION-- OCTOBER 2017 SELECTIVE DEMOLITION PAGE 5 OF 5