155/09.01.2026

Cleaning of silt, sludge brick bats, polythene bags, garbage etc. from chocked sewer manholes/sewer drains & nallahs/wet well of SPH/Anaerobic & facultative pond of STP with all required safety equipment such as safety belt, gas mask, oxygen cylinder etc. including disposal of silt sludge upto 50m lead & 1.5m lift as directed by Engineer In Charge including dewatering bat excluding dat (plugging of sewer pipe line) Depth Upto 1.5Mtr (PHEUSOR dt. 01.09.23 Item No. 29.32 P. No. 380) (A) For Collection Chamber New 1 x 2.40 x 2.40 x 0.70 = 4.03 Cum Old 1 x 2.50 x 1.80 x 0.70 = 3.15 Cum (B) For PTU/ Grit Chamber/Channel Old 2 x 10.20 x 0.8 x 0.80 = 13.05 Cum New 3 x 12.70 x 1.50 x 0.70 = 40.00 Cum 1 x 4.60 x 1.50 x 0.70 = 4.83 Cum (C) For Wet Well 1x0.785x[(23x23)- (10x10)] x 2.0 = 673.53 Cum Total Quantity = 738.59 Cum

(C) Extra rate for Depth 1.50 mtr to 3.0 mtr or part = 673.53 Cum.

(C) Extra rate for Depth 3.0 mtr to 4.5 mtr or part = 673.53 Cum.

(C) Extra rate for Depth 4.5 mtr to 6.0 mtr or part = 673.53 Cum.

(C) Extra rate for Depth 6.0 mtr to 7.5 mtr or part = 673.53 Cum

(C) Extra rate for Depth 7.5 mtr to 9.0 mtr or part = 505.14 Cum.

Carriage of desilted sludge & other material from sewage components by mechanical transport including loading unloading & stacking etc. (Ammendend PHE USOR Item No. 29.35.5 P. No. 384) From Patra S.P.H. to Dumping yard Distance upto 5 Km. from Patra S.P.H. Total Qty. = 738.59 Cum. Deduction 20% for air voids (-) 147.72 Cum Total Qty. 590.87 Cum.

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