Name of Work: Supply of Gravel, Pebbles, Sand & Garnet
Sl.No.
Description of Items
Item Code / Make
Qty
Units
1
1
\"GRAVELS be used to top up of the Gravity Filter at water treatment plant as per following specifications:-\nSpe. Gravity:- Not less then 2.65 %\nAcid Solubility:- Not more then 5% \n Loss of Ignition: not more than 0.7%\nOther Specification as per IS-8419 (Part-I)-1977\nNote: All gravel must be natural water rounded and uniform in size. These should not contain more than 2% of by mass of thin, flat or Elongated pieces. Gravel should be free from excessive amount of lime stones or shells.
2
1.01
Size (mm):- 2.5 to 6 mm
item1
5
MT
3
1.02
Grade: 6.0\nSize (mm):- 3 to 8 mm
item2
4
MT
4
2
\"Pebble be used to top up of the Gravity Filter at water treatment plant as per following specifications:-\nSpe. Gravity:- Not less then 2.65 %\nAcid Solubility:- Not more then 10%\nOther Specification as per IS-8419 (Part-I)-1977\nNote: All Pebble must be natural water rounded and uniform in size. These should not contain more then 2% of by mass of thin, flat or Elongated pieces. Pebble should be free from excessive amount of lime stones or shells.
5
2.01
Grade:- 14\nSize (mm):- 10 to 20 mm
item3
3.5
MT
6
2.02
Grade:- 20\nSize (mm):- 15 to 30 mm
item4
3.5
MT
7
3
SAND(Garnet) be used to top up of the Gravity Filter at water treatment plant as per following specifications:-\nGrade:- 22/44\nSize (mm):- 0.36 to 0.71 mm\nEffective Size (mm): 0.36 to 0.43 mm\nSpe. Gravity:- Not less than 3.80 % \nImpurity: Not more than 5 % by volume\nAcid Solubility:- Not more than 5%\nLoss of Ignition: Not more than 0.7 %\nOther Specification as per IS-8419 (Part-I)-1977\nNote: All Garnet must be natural water rounded and uniform in size.
item5
3
MT
8
4
SAND be used to top up of the Gravity Filter at water treatment plant as per following specifications:-\nGrade:- 10/18\nSize (mm):- 0.85 to 1.70 mm\nEffective Size (mm): 0.88 to 1.05 mm \nSpe. Gravity:- Not less than 2.65 % \nImpurity: Not more than 5 % by volume\nAcid Solubility:- Not more than 5%\nLoss of Ignition: Not more than 0.7 %\nOther Specification as per IS-8419 (Part-I)-1977\nNote: All Sand must be natural water rounded and uniform in size.
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