Tender For Supply Of Materials Supply Of Sand, Pebble, Gravels For Gravity Filter Btps, Anpara , Gravels(2.5-6.0 Mm) Be Used To Top Up Of The Gravity Filter At Water Treatment Plant As Per Following Specifications:-#Spe. Gravity:- Not Less Then 2.65 %#Aci, anpara-Uttar Pradesh

Supply Of Materials Supply Of Sand, Pebble, Gravels For Gravity Filter Btps, Anpara , Gravels(2.5-6.0 Mm) Be Used To Top Up Of The Gravity Filter At Water Treatment Plant As Per Following Specifications:-#Spe. Gravity:- Not Less Then 2.65 %#Acid Solubility:- Not More Then 5%# Loss Of Ignition: Not More Than 0.7%#Other Specification As Per 419 (Part-I)-1977#Note: 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 , Gravels(3.0-8.0 Mm) Be Used To Top Up Of The Gravity Filter At Water Treatment Plant As Per Following Specifications:-#Spe. Gravity:- Not Less Then 2.65 %#Acid Solubility:- Not More Then 5%# Loss Of Ignition: Not More Than 0.7%#Other Specification As Per 419 (Part-I)-1977#Note: 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. , Pebbles(10-20 Mm Grade 14)- To Top Up Gravity Filter At Wtp As Per Following Specications:#Sp. Gravity: Not Less Than 2.65%#Acid Solubility: Not More Tha 10%#Other Specification As Per Is 8419(Paryt-1)- 1977#Note-Pebbels Must Be Natural Water Rounded And Rm In Size. These Should Not Contain More Than 2% Of By Mass Of Thin Flat Or Elongated Pieces. Pebbles Should Be Free From Excessive Amount Of Lime Stones Or Shells , Pebbles(15-30 Mm Grade 20)- To Top Up Gravity Filter At Wtp As Per Following Specications:#Sp. Gravity: Not Less Than 2.65%#Acid Solubility: Not More Tha 10%#Other Specification As Per Is 8419(Paryt-1)- 1977#Note-Pebbels Must Be Natural Water Rounded And Rm In Size. These Should Not Contain More Than 2% Of By Mass Of Thin Flat Or Elongated Pieces. Pebbles Should Be Free From Excessive Amount Of Lime Stones Or Shells , Sand (Garnet) Be Used To Top Up Of The Gravity Filter At Water Treatment Plant As Per Following Specifications:-#Grade:- 22/44#Size (Mm):- 0.36 To 0.71 Mm#Effective Size (Mm): 0.36 To 0.43 Mm #Spe. Gravity:- Not Less Than 3.80 % #Impurity: Not More T Volume#Acid Solubility:- Not More Than 5%#Loss Of Ignition: Not More Than 0.7 %#Other Specification As Per Is-8419 (Part-I)-1977#Note: All Sand Must Be Natural Water Rounded And Uniform In Size. , Sand Be Used To Top Up Of The Gravity Filter At Water Treatment Plant As Per Following Specifications:-#Grade:- 10/18#Size (Mm):- 0.85 To 1.70 Mm#Effective Size (Mm): 0.88 To 1.05 Mm #Spe. Gravity:- Not Less Than 2.65 % #Impurity: Not More Than 5 % B D Solubility:- Not More Than 5%#Loss Of Ignition: Not More Than 0.7 %#Other Specification As Per Is-8419 (Part-I)-1977#Note: All Sand Must Be Natural Water Rounded And Uniform In Size.

Sr No	CorrigendumDate	Corrigendum	CorrigendumType	NewSubmissionDate
1	05-08-2025	Time Extension 3	Date	19-08-2025
2	17-07-2025	Time Extension 1	Date	19-07-2025
3	19-07-2025	Time Extension 2	Date	05-08-2025
4	19-08-2025	Time Extension 4	Date	21-08-2025

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