Excavation in Embankments

Unless otherwise specified in the Specifications and Drawings, the Contractor may choose with the approval of the Engineer to excavate for service ducts etc after the embankment has been placed. Any space remaining after the placing of such structures and deducting for specified bed or backfill, shall be filled with material approved by the Engineer and compacted as follows:

(a) Layer not more than 8 inches in loose thickness shall be placed and compacted in succession, with mechanical tampers or tires or tracks of motor driven equipment operated transversely to the roadway, to the densities specified in Clause 21.3.1. Moisture content shall be adjusted as directed by the Engineer.
(b) The excavation in embankment and the placing of backfill for the purposes described above shall not constitute any claims for payment but shall be covered under the Contract Unit Rate paid for other Works in which the operation is involved.

28.3.3 General Requirements

(i) To avoid interference with the construction of structures the Contractor shall, at points to be determined by the Engineer, suspend Work on embankments and/or in cuts forming the approach to any such structure until such time as the construction of the latter is sufficiently advanced to permit the completion of the approaches without the risk of interference or damage to the structures Work. The cost of such suspension of Work shall be included in the Contract unit prices for embankment. In carrying embankments up to or over culverts or pipe drains care shall be taken by the Contractor to have the embankments brought to equally on both sides and over the top of any such structure.
(ii) When as a result of settlement, an embankment requires the addition of material up to 12 inches in thickness to bring it upto the required grade level, the top of the embankment shall be thoroughly scarified before the additional material is placed, and no extra payment shall be made for the scarification.
(ii) The Contractor shall be responsible for the stability of all embankments and shall replace any portions that in the opinion of the Engineer have been damaged or displaced due to carelessness or neglect on the part of the Contractor.

Embankment material which may be lost or displaced as a result of natural causes such as storms, cloud-burst or as a result of unavoidable movement or settlement of the ground or foundation upon which the embankment is constructed shall be replaced by the Contractor with acceptable material from excavation or borrow. No additional compensation will be allowed for the replacement except that the quantity of material required will be paid for at the Contract price for the type of material used.

During construction the roadway shall be kept in shape and drained at all times. When unsuitable material has been placed in the embankment by the Contractor he shall remove it without extra payment.

28.3.4 Shoulders Ditches and Slopes

The roadway, including the slopes, and all drainage structures shall be substantially completed before the construction of pavement is started.

During the construction of the pavement, a shoulder at least 3 ft. wide shall be maintained in place to properly support he edges of the pavement. Upon completion of the pavement, the earth shoulders, slopes and ditches shall be completed and shaped to surface which is within 0.1 foot above or below the true surface shown on the Plans. The shoulders lines shall not vary more than 0.1 foot horizontally from the true lines shown on the Plans.

Hand dressing of shoulders, slopes or ditches etc. will not be required except where the use of mechanical equipment is impossible, necessary and as directed by the Engineer.

Material which contains weeds, roots or other unsuitable matter shall not be used in the construction of shoulders.

28.4 Measurement and Payment

28.4.1 Method of Measurement

The quantities to be paid for shall be the number of 100 cubic feet in the volume of embankment compacted in place, after clearing, grubbing and stripping, accepted by the Engineer formed with material resulting from:

(a) Roadway Excavation
(b) Borrow Excavation

Material from Roadway Excavation as defined in Clause 23.1 which is placed in the embankment and accepted by the Engineer will be paid for only in the embankment and such payment will be deemed to include the cost of excavating and hauling and all other costs in connection with this material in constructing the embankment.

Material from Borrow Excavation which is placed in the embankment and accepted by the Engineer will be paid for only in the embankment and such payment will be deemed to include the cost of excavation, payment of royalties to landowners and/or local communities, the cost of hauling and all other costs in connection with this material in constructing the embankment.

28.4.2 Basis of Payment

The quantities, determined as provided above shall be paid for at the Contract Unit Rate, respectively, for each of the particular pay items listed below and shown in the Bill of Quantities, which price and payment shall be full compensation for all the costs necessary for the proper completion of the Work prescribed in this item as explained in the following table:

Description Unit of Measurement
(i) Formation of Embankment from Roadway Excavation in Common Material Cft.
(ii) Formation of Embankment from Borrow Excavation in Common Material Cft.
(iii) Sweet earthfill from Borrow Excavation Cft.