Construction of spillway and appertenenant structures Jharbari FIS under PMKSY-HKKP for the year 2021-22

Construction of spillway ITEM NO. 1:- Earth work in excavation in foundation of Head work in all types of soil as per design and drawing including dressing the foundation, shoring etc. removing the surplus spoilby head lead to a safe distance from the working place and depositing required spoil in uniform layer, dressing, watering, breaking clods to not more than 10mm cube with compaction as direc-ted at site (Including bailing out stagnant water where necessary)A) All types of soil except soil mixed with gravel and boulder (For normal lead of 30 m and lift of1.50 m)A) Without de-watering.

B) For lead of 60 m and lift of 3.00 m, with de-watering:-

ITEM NO.4:- C.C work in prop. 1:3:6 with aggregate of size 13 mm to 38 mm free from dust, dirt &other foreign materials including rodding / vibrating, bailing out of water where necessary andcuring with supplying of all materials complete as directed (Temporary arrangement for obtain-ing clean water should be made at site. (Machine mixed)i) River shingles with shuttering and with de-watering [Ground water level = 63.00 m]:-

ITEM NO.5:- Collection and supply of one man size hard river boulder (size 25 cm to 30 cm) inclu-ding loading, unloading and stacking in measurable stacks at site not more than 1.00 m heightincluding paying the forest royalty, sales tax etc. including local carriage to work site etc. compl-ete as directed. (Distance from querry to the work site is 55 km)

ITEM NO.6:- Labour charge for pitching with one man size boulder including ramming and dress-ing the site to proper size and shape with local carriage of boulder from a distance of 50 m withlift up to 3.00 m complete as directed.

ITEM NO.7:- Supplying and laying of filter materials in thee gaps between the cement concreteprotection blocks complete as directed (6 mm to 20 mm size aggregate considering average dist.from querry to the work site = 50 .00 km).

ITEM NO.8:- Supplying, fitting, fixing and laying of M.S rod / Tor steel of all sizes in position as per design and drawing as required including cutting, cranking and making hooks with necessarylappage and tying with black wire complete as directed including cost of all materials.a) Tor steel of all sizes,12 mm dia bars:-

ITEM NO.9:- R.C.C work in prop. 1:2:4 with aggregate of size 6 mm to 20 mm free from dust, dirt and other foreign materials with proper reinforcement as per design and drawing including rod-ding / vibrating, curing etc. with bailing out water where necessary complete as directed. (Payment of reinforcement will be made separately)a) River shingles with shuttering and with dewatering [Up to G.W.L = 63.00 M]:-

b) River shingles with shuttering and without dewatering [Above G.W.L = 63.00 M]:-

ITEM NO.10:- Supplying, fitting, fixing of steel gates of cross and head regulator as per design anddrawing and specification including supplying of steel beams, channel section, rubber seal etc. Including all materials embedded partly where necessary and manually opertaed hoisting equipmentincluding carriage of all materials to work site complete.Steel gate at under sluice,

ITEM NO.11:- Supplying and mixing of rapidite with C.C / R.C.C work under sub-surface waterlevel complete as directed.

ITEM NO.12:- 12 mm thick cement plastering including clearing the surface and curing etc. compl-te as directed. (Prop. 1:3)

Item No 13.:-Supplying, fitting and fixing 38 mm dia G.I. pipe (Tata) railing in three rows including two coats silver painting etc.

ITEM NO.14:- Earth work in back filling of structure with earth obtaining from outside borrow pitfilling with 15cm layer, ramming, dressing, watering and compaction including paying compens-ation of land, if any with lead up to 3.00 m and lift 1.50 m.Back filling of abutment and return wall,

Construction approach road Earthwork in all soils in canal embankment & bed filling as per designed section and grade by truck carriage for a minimum distance of 4 KM including paying compensation of earthobtained from private, if any, loading, unloading spreading the same in embankment in layers not exceeding 15 cm thick including clearing light jungles, removing trees upto 15 cm dia & uprootingroots & stumps etc. from the seat of embankment, breaking clods to not more than 10 cm cubes ramming, dressing, roughening the seat of embankment, profiling etc. with all lead and lift completeas directed. (12.5% shrinkage allowance to be considered).

Collection & supply of sand mixed gravel (containing 40% of sand and 60% of gravel 13mm to 38mm) free from all foreign materials including carriage from quarry to work site, loading, unloading and stacking in measurable stacks as directed by the department (including paying of forest .royalty, sales tax, etc.) (Distance of work site from quarry=50km)

Labour charge for spreading of Hard River Gravel size 13mm. to 38mm to the required thickness including ramming and dressing the seat before laying the materials complete as directed.

Construction diversion channel Earthwork in excavation of diversion / feeder channel to the designed section and grade by depositing the spoils in the form of an embankment on either side of the designed section in layers not exceeding 15 cm thick including clearing light jungles and tree upto 15 cm. dia., uprooting roots and stumps from the seat of embankment and canal free from all vegetation including breaking clods not more that 10 mm cube ramming, dressing, bailing out stagnant rain water where necessary complete as directed.

Construction of whole bamboo single pallasiding with matured jati bamboo stalks 60mm to 75mm dia, fixed 15cm clear apart 1.20m to 1.5m above ground and 1.00m to 1.2m belowground with jati bamboo struts fixed 1.2m to 1.5m apart tied with galvd. Wire of 16G to 18G and withthree rows of horizontal half jati bamboo kamies complete as directed.

Supplying and laying empty cement bags filled with sand/ earth (as locally available)including stitching the mouth, laying, fixing in position with supply of bags, sutli, etc. complete as directed.

Construction closing dam Earthwork in all soils in canal embankment & bed filling as per designed section and grade by truck carriage for a minimum distance of 4 KM including paying compensation of earthobtained from private, if any, loading, unloading spreading the same in embankment in layers not exceeding 15 cm thick including clearing light jungles, removing trees upto 15 cm dia & uprootingroots & stumps etc. from the seat of embankment, breaking clods to not more than 10 cm cubes ramming, dressing, roughening the seat of embankment, profiling etc. with all lead and lift completeas directed. (12.5% shrinkage allowance to be considered).

Construction of whole bamboo single pallasiding with matured jati bamboo stalks 60mm to 75mm dia, fixed 15cm clear apart 1.20m to 1.5m above ground and 1.00m to 1.2m belowground with jati bamboo struts fixed 1.2m to 1.5m apart tied with galvd. Wire of 16G to 18G and with

Supplying and laying empty cement bags filled with sand/ earth (as locally available)including stitching the mouth, laying, fixing in position with supply of bags, sutli, etc. complete as directed.

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