Bharat Sanchar Nigam Limited Tender

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade :

Two or more coats on new work.

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sq.meters and under, including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the walls complete, including disposal of rubbish to the dumping ground, all complete as per direction of Engineer-in-harge.

With cement mortar 1:4 (1 cement : 4 fine sand).

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of Engineer-In-Charge

50 mm average thickness

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in all respect.

SBR Polymer (@10% of cement weight) modified cementitious bond coat @ 2.2 kg cement per sqm of surface area mixed with specified proportion of approved polymer

Providing, mixing and applying SBR polymer (of approved make) modified Cement mortar in proportion of 1:4 (1 cement: 4 graded coarse sand with polymer minimum 2% by wt. of cement used) as per specifications and directions of Engineer-in-charge. Note: Measurement and payment: The pre-measurement of thickness shall be done just after the surface preparation is completed and Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding / tapping with a blunt metal instrument and/or the 75mm size cube crushing strength at the end of 28 days to be not less than 30 N/Sqmm2).

12 mm average thickness.

25 mm average thickness in 2 layers.

Providing and laying SBR Polymer modified (of approved make @ minimum 2% by wt. of cement used) plain/ reinforced concrete jacket for the structural members e.g. columns, pillars, piers, beams etc with concrete having the specified minimum characteristic compressive strength [with ordinary portland cement, coarse sand and graded stone aggregate of 10mm maximum size in proportion as per design criteria] with specified average thickness all-round existing core of RCC member. Note: Rates shall be for finished surface area of concrete and shall include the cost of making holes in existing RCC slab, if required, for pouring concrete in shuttering mould of jacket and appropriate approved Super-Plasticiser for rendering concrete as flowable self compacting and SBR polymer but shall exclude cost of reinforcement, bond coat, Shear Keys, centering and shuttering, strutting, propping etc. (Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding/tapping with a blunt metal instrument)

50mm thick in Grade M 25 with cement content not less than 330 kg per cum

Dismantling of old chajjas including cutting of reinforcement and making good the walls by filling the holes with Cement Concrete 1:2:4 and making good with cement mortar 1:3 etc., complete as directed by the Engineer in charge.

Uprooting of trees / plants/shurbs on the surface of wall/roof in the building premises in the following operations as per the directions of Engineer in charge: i) Reaching upto the vicinity of the vegetation by erecting temporary scaffolding or with the help of suspended Jhula. (ii) Removing the vegetation along with roots including its traces. (iii) Saturating the area with dilute acid. (iv) Repairs to plaster damaged due to uprooting of vegetation, including cleaning and preparing the surface if required with PCC 1:2:4 (1 Cement : 2 Coarse Sand : 4 Graded stone agggregate 20 mm nominal size) and plastering over it with cement mortar 1:3 (1 Cement : 3 Fine sand)

Note : (i) Removal of each shrub / plant / tree or a group within 1.00x1.00 m of wall surface will be taken as one number for the purpose of payment (ii) The rate includes all the material,tools & plants required for the job including safety arrangement, insurance, scaffolding etc.. all complete. (iii) Precautionary measure should be taken for safety of the workers while executing the work for which no extra will be paid.

Credit to the department the unserviceable recovered reinforcement obtained while demolshing the chajjas.