02 41 16 - Structure Demolition.pdf

02 41 16 - STRUCTURE DEMOLITION

Herbert, Rowland & Grubic, Inc. 02 41 16 - 1 000598.0465

SECTION 02 41 16 - STRUCTURE DEMOLITION

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Demolishing and removal of structures and site elements.

2. Disconnecting, capping, or sealing, and abandoning in-place or removing site utilities.

1.2 DEFINITIONS

A. Abandon: Detach portions of items from exiting construction and legally dispose of them-off site unless indicated to be removed and salvaged or removed and reinstalled, as necessary to allow new construction. Seal remaining portions or pipe and fill in remaining portions of the structure and leave in place.

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

C. Remove and Return to Owner: Detach items from existing construction and deliver them to Owner.

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

1.3 MATERIAL OWNERSHIP

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

B. Items identified on the Contract Drawings or other items of interest or value to Owner that may be uncovered during demolition, shall remain the property of Owner:

1. Carefully salvage in a manner to prevent damage and promptly return to Owner.

1.4 QUALITY ASSURANCE

A. Regulatory Requirements: Comply with hauling and disposal regulations of authorities having jurisdiction.

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

1.5 PROJECT CONDITIONS

A. Existing facilities must remain in operation through the construction period until such time as new construction is accepted and placed into operation. Conduct demolition so utility services will not be disrupted unnecessarily.

Herbert, Rowland & Grubic, Inc. 02 41 16 - 2 000598.0465

B. Notify Engineer of discrepancies between existing conditions and Contract Drawings before proceeding with selective demolition.

C. Hazardous Materials: It is not known if hazardous materials are present in structures to be demolished. The Contractor is solely responsible to determine if and where any hazardous materials are present.

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

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

PART 2 - PRODUCTS

2.1 PLUGS

A. Grout Plugs: Cement-based dry-pack grout conforming to ASTM C1107, Grade B or C.

B. Manufactured Plug: Commercially available plug or cap specifically designed and manufactured to be used with pipe being abandoned.

2.2 FLOWABLE BACKFILL

A. Flowable Backfill: Type C, in accordance with PennDOT Publication 408, Section 220.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Survey existing conditions and correlate with requirements indicated to determine extent of selective demolition required.

B. When unanticipated 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 Engineer.

C. Survey of Existing Conditions: Record existing conditions by use of preconstruction videotapes:

1. Comply with requirements specified in Section 01 32 33 – Photographic

Documentation.

2. 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.

3.2 UTILITY SERVICES

A. Existing Services: Maintain services indicated to remain and protect them against damage:

Herbert, Rowland & Grubic, Inc. 02 41 16 - 3 000598.0465

1. Comply with requirements for existing services interruptions specified in Section 01 10 00 – Project Summary.

B. Existing Services to Be Removed or Abandoned: Locate, identify, disconnect, and seal or cap off indicated utility services serving areas to be selectively demolished.

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:

1. Comply with requirements for access and protection specified in Section 01 50 00

– Temporary Facilities and Controls.

B. Temporary Shoring: Provide and maintain shoring, bracing, thrust restraint, 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.

C. Contractor is responsible for removal of all liquid and sludge waste as necessary to perform the work as indicated in the Contract Documents.

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. 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. Maintain adequate ventilation when using cutting torches.

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

4. Dispose of demolished items and materials promptly.

B. Capped Utilities:

1. Disconnect and cap designated utilities as indicated on the Work Order.

2. Identify utilities at termination of demolition.

3. Record termination or capped location on Record Documents.

C. 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.

Herbert, Rowland & Grubic, Inc. 02 41 16 - 4 000598.0465

5. Protect items from damage during transport and storage.

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

3.5 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.

B. Burning: Do not burn demolished materials.

C. Disposal: Transport demolished materials off Owner's property and legally dispose of them.

3.6 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.

3.7 SCHEDULES

A. Existing Items to Be Removed: See Work Order.

B. Existing Items to Be Removed and Returned to Owner:

1. Manhole Frames and Covers.

2. Steel Plates.

3. Inlet Frames and Grates.

C. Existing Items to Be Removed and Reinstalled: See Work Order.

D. Existing Items to Remain: See Work Order.

END OF SECTION