b-1 tender form - Maharashtra Industrial Development Corporation

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80 the contractor will have to fill the extra excavated depths in layers to bring the correct level by watering and ramming at his own cost. 1.4 Foundation Preparation : The foundation for column footing and for structural components such as wall shall not be provided on soft strata covered under this item of excavation. The foundations for rafts, embedment of pipelines for water supply or drainage or gas may be laid on the foundation prepared on soft strata. The foundation level even if is confined within the soft layer, the final layer of excavation watered and brought to the required level and slope by ramming. The contractor shall not excavate below the line shown in the drawing or as directed. No foundation of any sort shall be laid unless the Engineerin- charge approves the strata on which foundations are to be laid and passes the depth of excavation to lay foundation and record the dimensions and elevations and types soils of the foundation pit, trench excavated, and shall be recorded in the field book adopting system already explained above. 1.5 Shoring and Strutting : The cost of shoring and strutting shall not be paid separately unless provided in the contract. The type and designing of shoring shall be decided by the contractor, and shall get approved from the Engineer in Charge. Pay Slopes : In lieu of shoring and strutting pay slopes for excavation of trenches/pits shall be stipulated and paid accordingly. 1.6 Disposal of Excavated Material : All the material obtained from clearing the site or from excavation shall be the absolute property of MIDC. All materials obtained from clearing the site and excavation shall be disposed off or spread or stacked within a lead of 50 meters beyond the excavated area as directed by the Engineer in Charge. Materials suitable for back-filling or other use shall be stacked at a convenient place within a lead of 50 meters as directed for refilling or reuse. No excavated material shall be kept within 1.5 m distance from the outer top edge of excavation to avoid the falling of the stuff in the pit or trench. Surplus materials shall be used for levelling the ground around as directed within a lead of 50 meters. If the surplus materials are required to be conveyed and used or stacked beyond 50 meters contractor shall be paid for extra lead or the extra conveyance as per the terms of contract. 1.7 Dewatering : It is the responsibility of the contractor to remove the water accumulated in the pit or trench, from sub-soil water or from rains or from any other natural source, by manually or by pumping out as required. Unless provided for in the contract separately, no payment shall be made for bailing out the water. The contractor may be required to provide temporary bunds, or provide byepass arrangements to avoid entering of water in the excavation at his own cost. The drained water shall be properly disposed off, so as not to cause any damages to the excavated area nor to the surrounding structures. The contractor shall keep the excavated area dry for measurements and for laying of foundation mortar or concrete. 1.8 Side Slips and Blows : Even after sufficient care of sides, slips or blows occur, they shall be removed at contractor’s cost. 1.9 Backfilling : After excavation is completed, measurements recorde by the Engineer-in-charge and the foundation raft masonry above is constructed or the pipeline is laid, all the shoring shall have to be removed. The backfilling of the pit or trench to the original level or as shown in the drawing or as directed shall be made from the selected excavated material stacked separately for that purpose. The material shall be laid in layers of 15 to 20 cm in thickness, watered and then rammed properly. The backfilling shall only be done after receiving orders from the Engineer-in-charge and without damaging the foundation raft or the pipeline etc. 1.10 Protective Measures : All the excavated pits, trenches etc. shall be properly protected from any accidents by providing strong fencing around. At night red lantern and watchman shall be kept in proper position to indicate the danger zone. It is the responsibility of the contractor to take the adequate protective measures and safety of the excavation, people and workmen and surrounding properties and will have to bear the damages if caused. All the cost of protective measures shall be included in the item rate. Contractor. Executive Engineer(E&M).
81 1.11 Item to Include : The rate for this item, as per the agreement includes all labour and tools for clearing the site, marking out the excavation line outs, shoring and strutting, excavation of pits or trenches, bailing or pumping out water if not provided separately, removal of excavated material and disposal of material as directed, refilling of pits or trenches, adequate protective measures etc. Contractor shall also make the necessary arrangements for taking measurements. The rate also includes the cost of repairs due to excess excavations or slips. The item also includes payment of the damages if any, by the contractor. The disposal of the material is included within 50 m radius from the edge of excavation. The lift for excavation of 1.5 m is covered by this item. The additional lifts shall be paid under Item No.Gen/A/2. The lead beyond 50 m shall be paid extra under Item No.Gen/A/9. 1.12 Mode of Measurement and Payment : The measurements of the original ground profiles at selected locations shall be taken after clearing the site. The measurements of the final excavated profile shall be taken if the excavation is less or more as directed by the Engineerin-charge or shall be measured as per drawings. Excess excavation shall be recorded but shall be paid to the limited quantity as explained above. The quantity shall be measured in cubic meters and paid at the rate as per the contract agreement. Item No 13 Providing murum bedding below pipeline and filling on the top of the pipeline with selected material in 15 to 20 cms layers including watering, ramming etc. complete. c) With material brought by contractor from MIDC area. 26.1 General : This item provides for bedding below the pipelines, the material being any of the a, b, c categories as described (listed) above. The excavation for laying of pipes is not covered in this item. The work of providing murum bedding is expected to be carried out after the excavation for trenches is complete. 26.2 The Work : The bedding shall be provided under the pipelines, when excavations are in soft rock, hard rock and shall be provided only in locations decided by Engineer-in-charge. Before providing murum bedding protrudes of the rock shall be cut chopped off and removed. The materials needed shall be selected <strong>form</strong> the materials available from excavation or borrowed by contractor from his own borrow areas within leads up to 5 km. Alternatively MIDC may permit the contractor to borrow the material from MIDC areas. For providing murum bedding on top of pipe line, prior permission of Engineer in Charge shall be obtained. All the provisions of item Gen/A/14 shall apply. 26.3 Mode of Measurement and Payment : The measurement shall be on the basis of volume of the bedding material in cum, actually laid. The contract rate shall be on cum measurement of bedding provided & shall be paid under the respective subdivision of the item description. Item No 14 28 Providing and fixing in line and level pavement blocks in CC M-20 grade including providing and preparing sand bed of 75 mm thick fixing blocks and filling the gaps with cement mortar 1:3 finishing and curing etc. complete. 28.1 General : The item pertains to provide paving using pavement blocks 75 mm thick of approved size with necessary sand bedding. 28.2 Material : The pavement blocks shall be manufactured of M-20 C.C. The blocks shall be manufactured of approved size and shape. The moulds for blocks shall be prepared as per approved size and shape of blocks to be provided of moulds shall be having depth 80 mm. The blocks shall be cast in M-20 grade C.C. using plate vibrator so to have dense blocks. The lower 60 mm shall be natural normal cement concrete and upper 15 mm layer shall be adding approved coloured cement of approved shade in concrete mix with white cement. The blocks shall be compressed using hydraulic press so that the same shall be dense without any voids. Alternatively blocks shall be compressed using vaccume press. Contractor. Executive Engineer(E&M).
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1 MAHARASHTRA INDUSTRIAL DEVELOPMEN
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3 महारा औदयोग
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5 01 Name of work. M&R to W/S/S/ to
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11 making out the ground and keepin
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13 NOTICE TO CONTRACTORS Sealed per
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15 B-1 Form Percentage rate tenders
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17 TENDER FOR WORKS MEMORANDUM a) G
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19 Conditions Of Contract CLAUSE 1
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21 contractor to complete in which
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Contractor. 23 CLAUSE 8 : Payments
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25 any instructions in this connect
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27 specifications, drawings, design
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Page 41 and 42: 41 ADDITIONAL TERMS AND CONDITIONS
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Page 45 and 46: 45 SCHEDULE “A” Name of work :
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Page 65 and 66: 65 18. Electric Connection and Tele
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Page 77 and 78: 77 Stainless Steel Fittings : These
Page 79: 79 Item No 11 Providing and fixing
Page 83 and 84: 83 34.6 Mode of Measurement and Pay
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Page 91 and 92: 91 Item No 22 Providing IInd class
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b-1 tender form - Maharashtra Industrial Development Corporation

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