Construction of Minor Bridge/Culvert on Hospital Road under Division South East Road-1, Sub-Division SER-14

Soil investigation in/around drains by boring hole of 40 m depth each by using shell and auger equipment including standard penitration test, collection of undistrubed soil samples at every identifiable change of strata, Conducting laboratory tests on soil samples to decide necessary shear strength parameters of soil as well as compression index and coefficient of consolidation. These tests include natural moisture content, bulk and dry density, liquid and plastic limits, particle size distribution, and specific gravity, unconfined compression tests, tri-axial shear tests and consolidation tests on specimen from collected undisturbed soil samples and particle size distribution, liquid limit, plastic limit etc. on specimen from collected disturbed soil samples. Conducting chemical analysis of subsoil water samples for evaluation of pH value, sulphate content, calcium content, chloride content and total dissolved solids in water for each borehole including preparation & submission soil investigation report, giving complete comprehensive record of field and laboratory investigations and interpretation in soft and hard copy all complete as per SP002, as per MORTH Technical Specification - 1102, 2403, 2404, 2405 and as per direction of Engineer-in-Charge. The soil report shall also recommend pile vertical and lateral load carrying capacities for 1 m and 1.2 m dia pile for depths varying from 25 m to 35 m. a) all kind of soil.

Boring, providing and installing Bored cast-in-situ Reinforced Cement Concrete Piles of M-35 grade of 1200 mm dia using Pozzolana Portland Cement (Conforming to strength requirement of IS: 1489 (Part-I) 1991) excluding the cost of steel reinforcement but including the cost of boring and temporary liner etc. complete as per approved drawings and Technical Specifications Sections 1100, 1700 of MORTH and IRC: 78 -2000 or as directed by Engineer-in-charge. (Minimum cement content considered in this item is 400 kg/cum. Nothing shall be paid extra in this item .) A) Scope of work: 1. All initial layout of piles after site clearance by dismantling existing structures as per instructions of Engineer-in-Charge and setting out of piles using total station survey including initial excavation (if any). 2. Boring through all type of soils, rock, existing road/pavement using hydraulic piling rig, removal of all obstructions like boulders etc. by chiselling or any other method as approved by the Engineer-in-Charge. If a bore is abandoned for any reasons no payment shall be made for such incomplete boring and shifting of the equipments.If rocky strata is present, boring through rocky strata shall have to be done at no extra cost. 3. 100mm dia empty boring through all type of soils, existing road/pavement for 10m depth to identify the utility services at at each abutment and pier locations (minimum 02 bores at each abutment) removal of all obstructions like boulders etc. by chiselling or any other method as approved by the Engineer-in-Charge. 4. Providing, preparation, circulation and handling of bentonite slurry/polymer including cleaning of bore bottom after completion of boring. 5. Stacking of usable earth coming out of boring or any other activity (which can be used as random fill) at locations as directed by Engineer-in-charge. 6. Disposal of all spoils, bentonite/polymer waste, dismantled material, surplus unusable earth for all leads and lifts and keep the work area neat and tidy during the work and thereafter, as per directions of Engineer-in-Charge. 7. Providing, driving/placing and withdrawal of 6mm thick ( or thickness as per design, whichever is more) temporary Mild Steel liner for each pile upto a depth of 5m below adjoining Ground Level or as per site requirement beyond which the bore hole can be stabilised using Bentonite slurry or Polymer and as directed by Engineer-in-charge. Nothing extra shall be paid for non-withdrawal of temporary mild steel liner. Wherever permanent liner is required as per designs & drawings, measurement and payment for the same shall be made separately under relevant item.

8. Placement of reinforcement cage including cost of any stiffeners, lapping, couplers and welding of bars, lifting hooks, rings to hold main reinforcement etc. with cover blocks of approved quality and thickness to maintain the cage in its designed shape and spacing of bars as per directions of Engineer-in-charge. 9. Providing and mixing all ingradients of cement concrete as per approved mix design including admixture, if any in approved concrete batching and mixing plant, transporation of concrete to specified location in transit mixer of adequate capacity, placement of concrete with suitable means including concrete pump, compacting/ vibrating concrete, finishing to design line and level and curing etc. 10. Filling up of the abandoned empty bore with M15 grade cement concrete and restoration of road if required. 11. Working for all leads, lifts, pumping / bailing out of water, labour, materials and equipments etc. 12. Mobilising to site, installation at different locations transferring / dismantling, shifting, reinstalling and removal from site of the piling rigs and/or other equipments and all accessories including working platforms from site. 13. Identification, protection and maintenance of existing services, if any, which in the opinion of Engineer-in-charge are likely to be affected by piling operation or any related activities including temporary shifting of such services to facilitate piling job at no extra cost. 14. Safety measures including Barricading around the bore holes during and after boring as specified elsewhere in the tender document. 15. All incidentals, labour, materias, equipments and works required to execute and complete the job.Cost of Construction of temporary diversions/coffer dams for going inside drain for pilling work is deemed to be included in quoated rate 16. The quoted rate will be applicable for all lengths of piles. 17. Cost of testing of all materials involved in the execution of item as per approved QAP and Specifications in internal / external laboratory including providing the samples and transporting to the testing laboratory. B) Mode of Measurement : Measurement for payment shall be made on the length of pile measured from cut off level to the bottom tip of the pile correct to a centimetre. The tentative length of piles to be measured as detailed in the specifications is from 20-25 meters. This shall be considered as a guidance only and there will be no change in the rate of pile in case of increase or decrease in pile length. Reinforcement shall be measured and paid separately under relevant item.Permanent liner if used will be paid under seperate item.

Extra for providing Permanent Liner of 6mm thick mild steel plate in place of temporary liner wherever required for piling works including fabrication and setting out in position. Mode of Measurement : Measurment shall be based on length of liner becoming part of permanent structure and nothing extra shall be paid for cutting & withdrawal of liner upto cut-off level.

Providing and laying Design Mix Reinforced Cement Concrete in Pile Caps, Open Foundations and any other foundation etc. in M35 grade of concrete using Pozzolana Portland Cement (Conforming to strength requirement of IS: 1489 (Part-I) 1991) including centering and shuttering, but excluding the cost of reinforcement, with all leads, lifts and depths all complete as per approved drawings and as directed by Engineer-in-charge. (Cement content considered in this item is 400 kg/cum. Extra cement required as per design mix will be paid under seperate item.) A) Scope of work: 1. Inclusive of all initial layout and setting out work using total station survey, identification and temporary protection of existing services. 2. Excavation from OGL to botttom level of PCC levelling course through all types of soils with stable slopes including removal of all obstructions like boulders, rocks, cement concrete structures etc. 3. Disposal of all spoils, dismantled materials, surplus earth for all leads and lifts, and to keep the work area neat and tidy during the work and thereafter. 4. Cost of pumping/bailing out of water, including its labour, material and equipments etc. 5. Cost of providing centering and shuttering including its erection, dismantling and removal for all leads and lifts with all required tools and plants. 6. Providing and mixing all ingradients of cement concrete as per approved mix design including admixture, if any in approved concrete batching and mixing plant, transporation of concrete to specified location in transit mixer of adequate capacity, placement of concrete with suitable means including concrete pump, compacting/ vibrating concrete, finishing to design line and level and curing etc. 7. All arrangements needed to keep the reinforcement bars of pile cap and pier in position with due cover blocks of approved quality and thickness.

8. Cost of compacted backfilling around the pile cap/isolated footing with approved material like filling sand/good earth etc and temporary restoration of road if required. 9. Cost of Maintenance and protection of existing services if any which in the opinion of Engineer-in-charge are likely to be affected by any related activities including temporary shifting of such services to facilitate construction of pile cap/footing work shall also have to be done, if so required by the Engineer-in-charge, and the cost for the same shall be included in the quoted rates. 10. Installation of any fixture into the pile cap/footing (cost of fixture to be paid separately as per requirement). 11. Barricading and all safety requirements as specified elsewhere in the tender documents. 12. All incidental labour, materials, equipment and works required to execute and complete the job as per approved drawings and specifications. 13. Cost of testing of all materials involved in the execution of item as per approved QAP and Specifications in internal / external laboratory including providing the samples and transporting to the testing laboratory. 14. Breaking of pile heads (manual chipping) after a minimum of 3 days and to remove and dispose spoiled concrete to bring the pile head to the cut off level including cleaning and arranging the extended reinforcement bars as per drawings. Mode of Measurement : Measurements for payment shall be made on the volume basis in cubic meters of concrete of M35 and the volume shall be calculated by simple geometrical concepts and formulae for the finished volume only. Quantity of concrete of piles, which has gone into the pile caps shall be deducted. Reinforcement shall be measured and paid separately under relevent item.

(i) Pedestals/ piers/pier cap/abutment /abutment cap/dirt wall etc. all complete as per approved drawing in M-45 grade concrete with Ordinary Portland Cement. (Cement content considered for concrete mix in this item is 420 kg/cum. Extra/less cement required as per design mix will be paid/recovered under seperate item)

(ii) Retaining walls/wing walls/toe walls including their foundation, base slab, stem wall etc. all complete as per approved drawing in M-35 grade concrete with Ordinary Portland Cement. (Cement content considered for concrete mix is 380 kg/cum. Extra/less cement required as per design mix will be paid/recovered under seperate item) A) Scope of work: 1. Providing, placement and removal of shuttering, staging, scaffolding, form liner etc, for piers, abutments, pier/abutment caps, bearing pedestals, Portal frame, retaining walls etc. and other similar works including all incidental work required to complete the job as per approved drawing and direction of Engineer in charge. 2. Providing and mixing all ingredients of cement concrete as per approved mix design including admixture, if any in approved concrete batching and mixing plant, transporation of concrete to specified location in transit mixer of adequate capacity, placement of concrete with suitable means including concrete pump, compacting/ vibrating concrete, finishing to design line and level and curing etc. 3. Casting of piers, pier caps, abutments, abutment caps, bearing pedestals, Portal frame, retaining walls etc. as per drawing, specifications and the directions of the Engineer-in-charge. 4. Disposal of all spoils and rubbish and to keep the work area neat and tidy during the work and thereafter. 5. Installation of any fixture, weep holes etc into piers/pier caps/walls or any similar structure etc. (cost of fixtures/weep holes if any, to be paid separately). 6. Safety measures including barricading around the piers/abutments or any similar structure during construction as specified in approved drawings and as directed by the Engineer-in-Charge. 7. All incidental labour, materials and testing, equipment and works required to execute and complete the job as per specifications and as directed by the Engineer-in-Charge. Construction of coffer dams and its removal inside Nallah is incidental to the work

8. Making arrangements for fixing of bearing, bearing plate, studs etc. as per approved drawing and direction of Engineer-in-Charge. Mode of Measurement : Measurements for payment shall be made on the volume basis in cubic meters of concrete and the volume shall be calculated by simple geometrical concepts and formulae for the finished volume. No deduction shall be made for the volume occupied by any fixture provided in the pier, abutment, etc. For form finish on the pier surface, actual volume of concrete after deduction for all grooves and indentation shall be considered for measurement. Reinforcement shall be measured separately under relevent item.

Providing and laying in position machine batched, machine mixed and machine vibrated design mix reinforced concrete of grade M45 with 43/53 grade Ordinary Portland Cement in deck slab in superstructure using 20mm & down stone aggregates and approved quality sand complete as per approved drawings, designs and specifications including the necessary tools, plants and machinery complete but excluding the cost of reinforcement. (Cement content considered in this item is @ 420 kg/cum.Extra/less cement required as per design mix will be paid/recovered under seperate item) A) Scope of work: 1. Providing and mixing all ingredients of cement concrete as per approved mix design including admixture, if any in approved concrete batching and mixing plant, transporation of concrete to specified location in transit mixer of adequate capacity, placement of concrete with suitable means including concrete pump, compacting/ vibrating concrete, finishing to design line and level and curing etc. 2. Making provisions for installation of expansion joints over the bridge deck as per approved drawings and as per manufacturer specifications/ directions of Engineer-in-charge. 3. Providing shuttering, staging and scaffolding, including its modifications, erection and removal in accordance with the provisions mentioned elsewhere in the tender document. 4. Necessary arrangement to keep the reinforcement in positioin with suitable cover blocks. 5. Cost of Maintenance and protection of existing services if any which in the opinion of Engineer-in-charge are likely to be affected by any related activities including temporary shifting of such services to facilitate construction of deck slab shall also have to be done, if so required by the Engineer-in-charge, and the cost for the same shall be included in the quoted rates. 6. Working for all leads, lifts, heights, labour, material and equipment etc. 7. Placing the concrete using Concrete Pump/Boom Placer. 8. Testing all the materials involved in the execution of the item as per QAP and specifications including providing the samples and transporting the same to the testing laboratory.