Balance Grading and Miscellaneous works of operational area at Dibrugarh Airport

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix).

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge.

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge. In cement mortar.

Dismantling manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge : bituminous road

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Grading of basic strip of Runway from Wall to Wall of the ground including removing vegetation and inequalities not exceeding upto 30cm deep as per the the garding requirements of Civil aviation CAR section 3.4.13 & 3.4.15 using motorized grader/dozer by cutting and filling in 20 cm layers watering and compacting with vibratory roller to obtain desired compacted density as per morth specifications and as per directions of engineer in charge. The work involves taking initial levels and plotting the finished level as per requirement of CAR section 3.4.13 & 3.4.15 and then grading the surface as per the approved gradient.The cut area and filled area should be compacted to desired density as approved by engineer in charge using vibratory roller of 8 to 10 tonnes.vibratory Rollers of smaller widths should be used for areas where bigger rollers can't used. If exra earth is obtained in any sector area,the same to be carried to areas where shortage of earth is there for filling and nothing extra shall be paid for the same. However for areas earth is to be brought from borrow pits from outside the AAI premises, the same will be delt under separate item.

Supplying and Banking with good earth obtained from approved quarry (within radius of 10km) in embankment or depression in layers not exceeding 20cm in depth, breaking clods/ over size material, removal of stumps/roots and the like & watering, grading/levelling each layer with dozers/grader and rolling every layer with vibratory roller/ earth compactor of minimum 8-12 tonnes capacity to achieve Min 95% relative compaction (field density) ( as per IS 2720 part VIII) and dressing to the required grade, camber and slope complete as per MoRth specifications and direction of Engineer-in-charge. (The item included cost of wotk, payment of necessary royalty , carriage of good earth upto work site for all leads and lifts involved . Plasticity Index (PI) of the good earth shall not be more than 8, payment to be made for compacted quantity only)