REPAIR REPLACEMENT AND CLEANING OF RAPID SAND FILTER AERATION TOWER AND SEDIMENTATION TANK AT MIL STN AGARTALA

Amount

Schedule'A' Part-I: E&M works

Material and labour for cleaning of existing Sedimentation tank by carrying out the following works all as specified and directed. (i) Removing the slidge, mud and dissolved iron water from the sedimentation tank (ii) Scrubbing the algae from the walls corners etc completely by using wire brush and bleaching powder all as specified and directed .

Material and labour for cleaning of existing Rapid sand fiter tank by carrying out the following works all as specified and directed. (i) Removing the slidge, mud and dissolved iron water from the rapid sand filter tank (ii) Scrubbing the algae from the walls corners etc completely by using wire brush all as specified and directed .

Material and labour for cleaning of existing aeration tower by carrying out the following works all as specified and directed:(i) Removing the sludge, Muddy and dissolved iron water from the aeration tower, water path by man power(ii) Scrubbing the algae from walls, corners etc completely by using wire brush & Man power.(iii) Washing the walls, bottom and all corners by bleaching powder.Note : Bleaching powder will be supplied by the contractor

Material and labour for cleaning of existing treatd water sump by carrying out the following works all as specified and directed. (i) Removing the slidge, mud and dissolved iron water from the sedimentation tank (ii) Scrubbing the algae from the walls corners etc completely by using wire brush and bleaching powder all as specified and directed .

Material & labour for filling filter media of Rapid sand filter as per OEM recommended layer procedure for specific approved size and material of following :- (i) 6"/150 mm of 20 x 30mm gravels/. (ii) 4"/100 mm of 12 x 20 mm gravels . (iii) 6"/100 mm of 06 x 12 mm gravels. (iv) 20" /450mm of 10-32 mesh sand.

Material and labour for construction of MS cover and frame including taking out of old damaged valve pit cover all directed by engineer-in-charg

Material & labour in repair for constraction of 230mm thick bnrick masonary valve chamber built in CM 1:6 of valve pit of size 900x900x900mm (internal size) with 100mm thick foundation using PCC 1:4:8 type D2 with 100mm offset,15mm thick plastering internally and 15cm below GL externally in CM 1:6, 3mm thick MS sheet cover ,double/single door welded to 50mmx50mmx6mm MS angle iron fram fixed with hold fasts in PCC 1:2:4 tyupe B1 coping 50mm thick, 20mmx6mm flat iron hinges with loocking arrangement including lock 65mm brass and keys, MS handies and applying one coat of red oxide primer and two coats of synthetic enamel paint to all steel surfaces including excavation & earth work in any type of soil / rock and disposal of surplus soil to a distance not exceeding 50m complete all as specified and directed.

Material & labour in repair for constraction of 230mm thick bnrick masonary valve chamber built in CM 1:6 of valve pit of size 900x900x1200mm (internal size) with 100mm thick foundation using PCC 1:4:8 type D2 with 100mm offset,15mm thick plastering internally and 15cm below GL externally in CM 1:6, 3mm thick MS sheet cover ,double/single door welded to 50mmx50mmx6mm MS angle iron fram fixed with hold fasts in PCC 1:2:4 tyupe B1 coping 50mm thick, 20mmx6mm flat iron hinges with loocking arrangement including lock 65mm brass and keys, MS handies and applying one coat of red oxide primer and two coats of synthetic enamel paint to all steel surfaces including excavation & earth work in any type of soil / rock and disposal of surplus soil to a distance not exceeding 50m complete all as specified and directed.

Supply & fix Non- feric alum (crystal) 50 Kgs in pack (for treatment of water in pump house) complete all as specified and directed

Supply and fix in repair CI non-return valve(NRV) 100 mm dia as per IS 5312,flanged end with nuts & bolts jointing etc complete including taking down the old unserviceable one all as directed.

S&F pressure gauge in repair of range 0-14 kg /sqcm dial type of size on rising main including all fixing accessories, fixing and testing complete including taking down the old unserviceable all as specified and directed

M & l Brick workwith sub class B bricks ,straight or curvded on plan built in cement mortar 1:4 including demolition of old brick work,complete all as specified and directed

Supply, installing and testing butterfly valve, class PN-1.6, ISI marked suitable for 100 mm bore pipe with flanged ends and nuts, bolts & washers including dismantling unserviceable butterfly valve and removing from site of work complete all as specified and directed

Supply & fixing connecting and testing of CI sluice valve ,ISI marked duly embossed 100 mm bore both ends flanged,with CI body and brass spindel with bolts and nuts ,operating wheel etc. including taking down old unserviceable,non rising type class PN-1.6 including ,jointing material rubber gasket, complete all as specified and directed.

Supply and lay 100 mm bore steel water tubing, galvanised 'medium grade’ with all necessary fittings and fixed complete to walls and ceilings or laid in floors including dismantling unserviceable item complete all as specified and as directed

Excavation in trenches, n exc 1.5m wide and n exc 1.5m in depth in soft/loose soil for foundation etc, or for shafts, wells/laying of pipeline cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5m in depth and getting out.

Returning, filling, including spreading, leveling, watering and well ramming in layers not exc. 25 cm all as specified and directed.

Removing excavated material n exc 50m and deposting where directed at a level n exc 1.5m above the starting point.

Supply & fixing connecting and testing of PP-R Gate valve of size 63 mm bore and including taking down old unserviceable, complete all as specified and directed.

Supply & fixing connecting and testing of PP-R Gate valve of size 63 mm bore and including taking down old unserviceable, complete all as specified and directed.

Supply & fixing connecting and testing of CI sluice valve ,ISI marked duly embossed 150 mm bore both ends flanged,with CI body and brass spindel with bolts and nuts ,operating wheel etc.including taking down old unserviceable, non rising type class PN-1.6 including ,jointing material rubber gasket, complete all as specified and directed.

NOTES :- 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum. 2. Unless otherwise specified the rates for PCC shall deemed to include the cost of formwork shuttering etc, required for complete and proper execution of the work. Refer Schedule 'A' notes for details.

SHRI RAJESH DEY (BID ID -3193979)

M/S New Saha Enterprise (BID ID -3194087)

M/S PAUL ENTERPRISE (BID ID -3194106)