Structural repair, Replacement of damaged/broken shaft platforms, water supply and sanitary pipe line works in South side Shaft wells at Sanchar Bhawan, 20 Ashoka Road, New Delhi.

SH:New Technologies and Materials

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

(a) 75mm average thickness

Cleaning of reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of Engineer-In-Charge

(a)Bars upto 12 mm diameter

(b) Bars above 12 mm diameter

Drilling suitable holes in reinforced or plain cement concrete with power driven drill machine to a minimum depth of 100mm upto 200mm in RCC beams, lintels, columns and slabs to introduce steel bars for sunshades/balconies including fixing the steel bars in position using epoxy resin anchor grout of approved make but excluding the cost of reinforcement, all complete as per direction of Engineer-In-Charge.

(a) Upto and including 12mm dia

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

(a) Epoxy bonding adhesive having coverage 2.20 sqm/kg of approved make

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

(a)12 mm average thickness.

(b)25 mm average thickness.

(c)50 mm average thickness.

Providing and placing in position Micro-concrete of (Fosroc, Renderroc or Sika, Microconcrete 2 or equivalent) as approved by the Engineer-in-charge which shall be cement based prepacked single component, chloride free, non-shrink, free flow, self compacting, ready to use after mixing water in specified proportion obtained from approved manufacturer as per specification and directions of Engineer in charge. (a) Micro-concrete without any coarse aggregate for depressions, walls, fascias, fins etc. in thickness less than 100 mm., at all height excluding cost of centering, shuttering, finishing, reinforcement and scaffolding. (Payment under this item shall be made only after proper curing has been done and surface has been satisfactorily evaluated by sounding/ tapping with a blunt metal instrument).

Providing and fixing hard drawn steel wire fabric of size 75 x25 mm mesh or other suitable size wire mesh to be fixed & firmly anchored to the concrete surface by means of “L” shaped mild steel shear key welded with existing reinforcement including the cost of materials, labour, tool & plants as approved by Engineer-in-charge

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete above plinth level

(a) Cold twisted bars

Centering and shuttering including strutting, propping etc. and removal of form for (a) Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Finishing walls with water proofing cement paint of required shade :

(a) New work (Two or more coats applied @ 3.84 kg/10 sqm)

Providing and fixing double scaffolding system (cup lock type) on the exterior side of building/structure, upto 25 metre height, above ground level, including additional rows of scaffolding in stepped manner as per requirement of site, made with 40mm dia M.S. tube, placed 1.5 metre centre to centre, horizontal & vertical tubes joint with cup & lock system with M.S. Tubes, M.S. tube challis, M.S. clamps and staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for execution of work of cleaning and/ or pointing and/ or applying chemical and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connecting with the building etc, wherever required, if feasible, for inspection of work at required locations with essential safety features for the workmen etc., complete as per directions and approval of Engineer-in-charge. Note:- (1) The elevational area of the scaffolding shall be measured for payment purpose. (2) The payment will be made once only for execution of all items for such works.

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

One or more coats on old work.

Distempering with 1st quality acrylic washable distemper (ready made) having VOC content less than 50 gm per ltr. of approved manufacturer and of required shade and colour complete as per manufacturer's specification.

One or more coats on old work.

SH: Repairs to Building

Repair to plaster of thickness 12mm to 20 mm in patches of area 2.5 sqm and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing mortar, including disposal of rubbish, all complete as per the direction of Engineer-In- Charge.

Disposal of moorum/building rubbish/ malba/ similar unserviceable, dismantled or waste material by mechanical transport including loading, transporting, unloading to approved municipal dumping ground for lead upto 10 km for all lifts, complete as per directions of Engineer-in-charge. Note - item to be applicable in urban areas having directions for restricted hours for movement/ plying of load carrying motor vehicle of 3.5 cum or more.

Sub-Head : Concrete Work

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :

1:2:4 (1 cement : 2 coarse sand(zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Sub-Head : Brick Work

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in:

Cement mortar 1:4 (1 cement : 4 coarse sand)

Sub-Head : Dismantling and Demolishing

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.

Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Sub-Head : Steel Work

Steel work welded in built up sections/ framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required.

In stringers, treads, landings etc. of stair cases, including use of chequered plate wherever required, all complete.

In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works.

Sub-Head : Sanitary Installations

Providing and fixing M.S. holder-bat clamps of approved design to Sand Cast iron/cast iron (spun) pipe embedded in and includingcement concrete blocks 10x10x10 cm of 1:2:4 mix (1 cement : 2coarse sand : 4 graded stone aggregate 20 mm nominal size), including cost of cutting holes and making good the walls etc. :

For 100 mm dia. Pipe

Providing and fixing high pressure upvc spigot and socket Integrated Rubber Ring (IRR) soil, waste discharge and ventilating pipes conforming to IS 13592 Type B including jointing with seal ring (IRR) leaving 10mm gap for thermal expansion

110 mm Dia Single Socketed Pipes

P/F upvc moulded IRR fittings for soil, waste discharge and ventilating pipes including jointing with seal ring(IRR) leaving 10mm gap for thermal expansion:-

Bend 87.5 degree: 110 mm bend.

Door Bend 87.5 degree: 110 mm door bend.

Single tee with door: 110 x 110 x 110 mm.

Coupler : 110mm

Vent Cowl : 110mm

Providing and fixing high pressure upvc spigot and socket Integrated Rubber Ring (IRR) soil, waste discharge and ventilating pipes conforming to IS 13592 Type B including jointing with seal ring (IRR) leaving 10mm gap for thermal expansion

160 mm Dia Single Socketed Pipes

P/F upvc moulded IRR fittings for soil, waste discharge and ventilating pipes including jointing with seal ring(IRR) leaving 10mm gap for thermal expansion:-

Bend 87.5 degree: 160 mm bend.

Door Bend 87.5 degree: 160 mm door bend.

Single tee with door: 160 x 160 x 160 mm.

Coupler : 160 mm

Vent Cowl : 160 mm

Sub-Head : Water Supply

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings. This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge : External work

25 mm nominal outer dia. Pipes.

40 mm nominal outer dia. Pipes.

50 mm nominal outer dia. Pipes.

Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. : External work

65 mm dia. nominal bore

Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :

80 mm nominal bore

Providing and fixing C.I. sluice valves (with cap) complete with bolts, nuts, rubber insertions etc. (the tail pieces if required will be paid separately) :

100 mm diameter

Class II

Providing and fixing G.I. Union in G.I. pipe including cutting and threading the pipe and making long screws etc. complete (New work)

65mm nominal bore

M/S SHREYA ENTERPRISES