All measurements shall be irrespective of the depth of burial of the various facilities to be demolished, removed or partially removed, recovered, plugged or grouted, and in pricing the payment items the Contractor will be deemed to have taken due account of the depths of burial and the costs of all necessary temporary works, supports, de-watering etc. The removal of pipelines 100 mm and less in internal diameter, unless designated for recovery, shall not be measured or paid for separately but shall be considered as a subsidiary obligation under this Section of the Bills of Quantities.
Except as otherwise specified herein all payment items shall include for all demolition and removal work as specified herein, for excavation, backfilling and compaction in accordance with Section II (Earthworks) of these Specifications and for all necessary temporary works, supports, de-watering and all other items or operations necessary to complete the works in accordance with these specifications.
Where embankment is to be constructed subsequent to removal of existing pavement, the volume of embankments shall be measured from the level of the underside of the pavement to be removed.
Payment items shall also include for the removal, cleaning, transportation and storage of materials specified to be recovered and for all specified cleaning out and disposal of all debris, sediment, refuse and other unsuitable material.
The Contractor should note that no separate payment in connection with demolition and removal items shall be made for excavation in rock or in unsuitable material, and all payment items shall include for any additional suitable material required to backfill excavations.
No additional payment shall be made for fill material required to backfill voids formed by the removal, or partial removal, of facilities. The Contractor shall be deemed to have allowed for such requirements in the rates entered in the Bills of Quantities.
207.08.2 Removal of Existing Pavements
Measurement for the removal of asphaltic pavement shall be by the metre cube of asphaltic material. Payment shall be at the rate in the Bills of Quantities which payment shall include for the removal of asphaltic materials and delivery to the designated locations and removal and disposal of kerb base and backing etc., and where not specified for recovery, kerbs.
Measurement for the removal and disposal of non-asphaltic pavement not specified for recovery shall be by metre square in the case of concrete paving slabs and by metre cube for all other materials, in all cases measured from outside face of any boundary kerbs or the like not measured separately for removal. Payment shall be at the rates in the Bills of Quantities, which rates shall include for the removal and disposal of all pavement material, associated kerb and edging backing and base concrete and, where not specified for recovery, kerbs and edgings.
Measurement for the recovery of precast concrete paving slabs shall be by the metre square, in all cases measured from the outside face of any boundary kerbs or the like not measured separately for removal. Payment shall be at the rate in the Bills of Quantities which payment shall include the removal of all slabs, cleaning and delivery to the designated locations for storage on site and subsequent delivery to the location on site for reinstallation. Payment shall also include for removal and disposal of associated edgings and kerbs, including all base and backing concrete where the edging or kerbs are not specified for recovery, or are not measured separately for removal.
Measurement for the recovery of edging/kerbs shall be by the metre run. Payment shall be at the rate in the Bills of Quantities which payment shall include the removal of the edging/kerbs, cleaning and delivery to the designated locations or storage on site and subsequent delivery to the location for reinstallation. Payment shall also include for the removal and disposal of edging/kerb base and backing, etc.
Payment for all measures required for building and protecting stockpiles shall be included in the price for Removal of Existing Pavements, and no additional payment shall be
SECTION 2 EARTHWORKS
made. No work shall be accepted for payment under this pay item in which the Contractor has not complied with the requirements to protect the salvaged pavement from loss and contamination, to protect stockpiles from unauthorized dumping, and to keep separate those salvaged materials which differ in layer thickness and mix type as defined in Clause 207.02.3. Deduction from the pay quantity shall be made for material which in the judgement of the Engineer or his representative has become contaminated in the course of the work.
Material shall be judged to have become contaminated in the course of the work when it consists of two or more unlike pavements (as defined in 207.02.3) or when a detrimental amount of soil, rubble, rubbish, or other extraneous substance is present as a result of the Contractor’s method of removal or his failure to protect the material. For the purpose of this provision, a detrimental amount of extraneous material is any amount of foreign matter which is liable to disrupt the flow of materials through the crushing and mixing equipment or cause measurable variations in the mixture. Windblown soil, in the absence of other contaminants, shall not be considered as contamination. The Engineer may determine that all or part of a stockpile is contaminated, and this determination shall be made on the basis of visual inspection by the Engineer or his representative.
When directed by the Engineer the Contractor shall remove the contaminated parts of the stockpile and shall weigh this material in the presence of the Engineer or his representative. He shall then dispose of the material in a location approved by the appropriate authorities and in accordance with Clause 102.11 and all laws and regulations.
The amount to be deducted from the pay quantity shall be the total volume of rejected material as determined by converting the weight in tones to volume in cubic metres, at the rate of 0.445 cubic metres per tonne.
207.08.3 Cutting Back of Existing Construction
No separate measurement or payment shall be made for cutting back existing pavement or other construction. All work shall be included as a subsidiary obligation to the items in the Bills of Quantities.
207.08.4 Removal of Fencing
Measurement shall be by the metre run of fencing removed, and by the metre run of fencing recovered no matter what the style or variety of fencing involved. Measurement shall include gates.
Payment shall be at the rate in the Bills of Quantities for either removal and disposal or removal and recover which rate shall include, but not by way of limitation, all costs involved in dismantling, cleaning including removing concrete from fence posts, transporting to store, and backfilling redundant post holes.
207.08.5 Demolition and Removal of Structures
Measurement for the demolition and removal of all structures and related obstacles shall be at the metre square of plan area of the main structure to be removed.
Payment shall be at the rate in the Bills of Quantities which rate shall include the cost of demolition of the main structure and all associated structures (sheds, outbuildings, garages, etc.), all walls, fences, driveways, signs, etc. as shown on the Drawings or as designated by the Engineer.
207.08.6 Removal of underground Pits, Chambers, Cess-Pools and Similar Facilities
Measurement shall be by the metre cube of internal volume with depth being measured from original ground level, finished ground level or sub-grade level whichever is the lowest. Payment shall be made at the rate in the Bills of Quantities, and this shall include for any pumping out and cleaning and filling as directed by the Engineer.
207.08.7 Removal of Underground Storage Tanks
Measurement shall be by the number of each type of tank of each quoted approximate size. Payment shall be made at the rate in the Bills of Quantities.
207.08.8 Demolition and Removal of Box Culverts, Pipelines, Manholes, Inlets, Gulleys and Similar Facilities
All references to “pipe diameter” in item (a) to (i) below shall mean “nominal pipe diameter”.
a. Total Removal of Culverts
Measurement shall be by the metre run for each size of culvert. Payment shall be at the rate in the Bills of Quantities. Headwalls, apron slabs etc., shall not be measured or paid for separately but shall be considered incidental to the culvert removal.
b. Partial Removal of Culverts
Measurement shall be by the metre run for each size of culvert. Payment shall be at the rate in the Bills of Quantities.
The removal and disposal of headwalls and, where specified, apron slabs shall not be measured or paid for separately but shall be considered incidental to the partial removal of the culvert.
c. Total Removal of Pipelines and Recovery of Pipes and Fittings
Measurement shall be by the metre run for pipes to be removed and disposed of, and by the metre run for pipes to be removed and recovered.
SECTION 2 EARTHWORKS
Measurement shall be made overall including the length of manholes and fittings. Separate items shall be measured for concrete encased pipes and non-concrete encased pipes.
Payment shall be at the rate included in the Bills of Quantities which rate shall be full compensation for the removal and disposal or recovery as specified.
d. Partial Removal of Pipes
Measurement shall be by the metre run for each diameter of pipe irrespective of pipe material measured overall including the length of manholes and fittings. Payment shall be at the rate in the Bills of Quantities.
e. Grouting of Pipelines
Measurement shall be by the metre run of pipeline grouted for each pipeline diameter. Payment shall be at the rate in the Bills of Quantities, which payment shall include end plugs to the pipeline.
f. Plugging of Pipelines and Culverts
Plugs to pipelines and culverts shall not be measured or paid for separately but shall be considered as incidental to pipeline and culvert removal.
g. Cut-off Walls and Capping Slabs
Measurement shall be by the metre cube of wall/slab. Payment shall be at the rate in the Bills of Quantities.
h. Manholes
Measurement shall be by the number of each type of manhole irrespective of total depth or overall size. Reinforced concrete and block work manholes shall be measured separately. Payment shall be at the rate in the Bills of Quantities. Manholes on lines designated for removal shall not be measured and paid for separately but shall be deemed to be included in the rate for removal of the pipeline.
i. Drainage Inlets, Gulleys and Similar Facilities
Measurement shall be by the number of each particular facility irrespective of total depth and overall size. Payment shall be at the rate in the Bills of Quantities.
Demolition and removal of the facilities included in (a) to (i) above shall not be measured within the pay limits of excavation of high level areas or structural excavation unless required to be recovered, but shall be deemed to be included in the rate for excavation.
207.08.9 Removal of Street Furniture
Measurement for the removal of street furniture shall be by the number of each type of street furniture item recovered, cleaned and delivered to store, of each type recovered and set aside for re-erection and subsequently re-erected and of each type removed and disposed of.
Measurement for the removal of median cable barrier, median fence with cable, and metal beam guardrail shall be in accordance with the units and rates set out in the Bills of Quantities for each type of barrier recovered, cleaned of concrete foundation and delivered to store, and for each type removed and disposed of.
Payment shall be at the rates in the Bills of Quantities.
208 - STRUCTURE EXCAVATION