Section
2108. Overhaul
Transport
excavated material from roadway and borrow excavation, from channel excavation,
and from excavation for structures a distance in excess of the free haul limit
for the kind of excavation involved.
Specified
in the contract documents.
None.
2108.04 Method of Measurement.
A. In determining what constitutes
necessary haul, it will be assumed that material taken from excavation will be
deposited in embankment after having been hauled the minimum possible distance.
The haul distance for material moved from borrow outside the roadway will be
measured from the center of mass along the shortest route the Engineer
determines to be feasible and satisfactory. The haul distance for material
obtained from the roadway, including interchanges and intersections, and placed
inside the main roadway will be measured along the center line of the roadway.
B. If pavement equipment crossings
are designated by the Contractor as provided in Article 1105.11, B, and the
contract provides for payment of overhaul on the material involved, overhaul on
the material obtained within the roadway will be computed and measured along
the center line as described above. Overhaul will be computed and measured on
the basis that material taken from excavation was deposited in adjacent
embankment after having been hauled the minimum possible distance, irrespective
of the number and location of equipment crossings designated by the Contractor.
The haul distance for material moved from outside the roadway will be measured
along the shortest route the Engineer determines feasible and satisfactory. It
will be assumed that an equipment crossing was designated opposite the point
where the haul road enters the roadway.
C. The limits of free haul will be
determined from a mass diagram by fixing two points on the volume curve, one on
each side of the neutral grade point. One point is placed in excavation and the
other in embankment so that the distance between them equals the free haul
distance and the included quantity of excavation and embankment balance.
Materials within the free haul limit will be eliminated from further
consideration. The distance between the center of gravity of the remaining mass
of excavation and the remaining mass of embankment, minus the free haul
distance, will be the overhaul distance. The quantity of overhaul will be
measured in station yards. A station yard is defined as the product of an
overhaul distance of 1 station multiplied by 1 cubic yard of material hauled a
distance greater than the free haul distance.
D. Unless provided otherwise in the
contract documents, the free haul distance will be 1000 feet.
E. Payment for Overhaul will be for
quantities shown in the contract documents in conjunction with quantities shown
in the contract documents described in Article 2102.04 and under the conditions
described therein. If Class 10 excavation quantities are changed, overhaul
quantities will also be subject to change. The Engineer will compute the
overhaul change if it can be identified. If not, it will be adjusted by the
ratio of adjusted quantities to original quantities shown in the contract
documents of Class 10 excavation.
Payment
for the quantity of overhaul, measured as provided above, will be the contract
unit price per station yard with the following exceptions:
A. Overhaul will not be paid for
selected backfill material if it can be secured and used as shown in the
contract documents. Should changes from the contract documents cause an
increase or decrease in necessary haul, payment will be adjusted for such
increase or decrease at the contract unit price per station yard.
B. If no bid price appears in the
contract for overhaul, increased overhaul will be paid for at a unit price
agreed to by the Contractor and Engineer, but not to exceed $0.02 per station
yard.
C. Overhaul will not be paid for
Contractor furnished material (such as borrow or topsoil) and waste material.