204 - Removing Miscellaneous Structures and Materials

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204
Removing Miscellaneous Structures and Materials
2012 STANDARD SPECIFICATIONS FOR CONSTRUCTION - SECTION 204


Contents

GENERAL

-Reserved-

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MATERIALS

-Reserved-

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CONSTRUCTION

Hot Mix Asphalt (HMA) Pavements and Driveways

For removal of HMA pavements and driveways:

If the HMA surface removed is 5 inches (130 mm) or less in thickness, the surface is considered part of the underlying material and is included in the quantities of the underlying material measured for removal.

If the HMA surface removed is over 5 inches (130 mm) in thickness and overlying a material such as concrete, masonry, aggregate or earth that is also removed, it will be measured and paid for as Pavement, Remove.

The removal of a HMA surface 12 inches (300 mm) or less in thickness overlying a material to remain in place will be measured and paid for as HMA Surface, Remove. See subsection 502.03 of the Standard Specifications.

The removal of HMA surface greater than 12 inches (300 mm) in thickness overlying a material to remain in place will be measured and paid for as Pavement, Remove.

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Structures

All structures and attached parts and connections shown on the plans to be removed will be entirely removed.

Structures requiring removal, but not shown on the plans to be removed, will be entirely removed or broken down to at least 3 feet (1 m) below final ground elevation and/or final pavement surface.

Any retained portion of an existing structure should not be damaged by construction operations.

Portions of existing structures and/or culvert structures not interfering with new construction will be removed to at least 3 feet (1 m) below the pavement surface within the limits of the roadbed, and elsewhere to an elevation of at least 12 inches (300 mm) below the finished grade.

Where existing culvert structures are to be extended or otherwise incorporated into the new work, only such portion of the existing structure will be removed as to provide a proper connection to the new work.

Salvaging, sawing when required, disposing of removed materials and backfilling with granular material are also included in this work.

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MEASUREMENT AND PAYMENT

Documentation

Identifying, measuring and recording removal items on an IDR (or on Form 1122A) are very important. If the Contractor chooses to dispose of any material off the ROW and on private property, a copy of the Contractor's written permission from the property owner is required and will be filed with the Engineer. In no case (on or off ROW) will any wetland or flood plain be filled during the disposal of materials.

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Demolition Contracts

There is no reference to this work in the Standard Specifications for Construction. Requirements for demolition work are usually detailed in contracts prepared by the Real Estate Support Area.

Demolitions contracts, in and of themselves, are not subject to the prevailing wage requirements of the Davis-Bacon and Related Acts, but such work performed as a part of a construction contract is clearly covered. PR 47's are not required on demolition contracts.

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Types of Demolition Contracts

Negative bid contract - MDOT pays a Contractor for demolition work.

Positive bid contract - the Contractor pays MDOT for demolition work.

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Requirements Before Demolition Work May Begin

It is preferred to complete demolition contracts before project certification due to significant cost and time savings. MDOT may advertise and award contracts for demolition before receiving possession of a parcel. However, MDOT must have possession of the parcel before any authorization for demolition work to begin may be given.

The Engineer must receive notification of possession and release recommendation from the Region Real Estate office or Lansing Real Estate Project Team before authorizing demolition work to begin on any parcel. All parcels should be cleared through the Region Real Estate office or the Lansing Real Estate Project Team office. No project certification is required before releasing a parcel for demolition work.

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Wells

It is important that inspectors make certain demolition Contractors have fulfilled their responsibility of grouting and sealing wells encountered during demolition to avoid additional costs during later highway construction. Special attention should be paid to the contract specifications for sealing and grouting wells.

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UST’s

Buried underground storage tanks encountered during demolition projects are to be taken care of in the same manner as those found during construction contracts, using either the Upper Peninsula or Lower Peninsula underground storage tank (UST) removal contract that has been established. Refer to Section 210, of this manual, under UST Removal Contracts, for procedures to be followed when tanks are found.

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Site Clearing (Form RE-18)

Form RE-18 - Site Clearing is used to notify the Region real estate agent of a satisfactory site cleanup. See Figure 204-1.

RE-18

CLEARING SITE
(In accordance with the specifications)

TO

DATE

PROJECT ENGINEER


Site

CONTROL SECTION NO.

JOB NO.

PARCEL NO.

PROPOSAL NO.

LOCATION



SGL

The bidder will remove basement walls to the basement floor level, remove all masonry and other debris from the site and fill the basement to ground level with earth containing not more than 2 percent fieldstone in excess of 6 inches (150 mm) in diameter.


DGL

The bidder will remove basement walls and all masonry to ground level, remove all combustible materials and debris from site; however, bidder may deposit noncombustible masonry in the excavation to a depth which is not less than 2 feet (600 mm) below grade level, and complete filling the excavation with earth containing not more than 2 percent fieldstone in excess of 6 inches (150 mm) in diameter.


RWS

The bidder will remove basement walls to basement floor level, remove all masonry and other debris from the site and fill excavation from existing soil to a 1 on 2 back slope [1 foot (300 mm) vertical and 2 feet (600 mm) horizontal].


NB

Walls to be removed to ground level and debris removed from site. No further grading is necessary. See Form 665.


WG

Well to be grouted in accordance with specifications attached to Notice to Public.


STR

Septic tank to be pumped out and removed.


SM

Site to be seeded and mulched in accordance with specifications attached to Notice to Public.


TLM

12 inch (300 mm) layer method.

Performance bond, site clearance deposit or sums withheld pending satisfactory cleanup of site may be returned.

PROJECT ENGINEER SIGNATURE


DATE


Figure 204-1 Form RE-18 - Clearing Site

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