b-1 tender form - Maharashtra Industrial Development Corporation

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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).