Construction of minor bridge/ Culvert on Ratan Lal Sahdev Marg under Division South East Road -1, Sub Division South East Road -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. Extra cement required as per design mix will be paid under seperate 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.

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)