24-Particular Specificatins (268 - 295)

C.A. No. DG MAP/PHASE-II/GPR/PKG-14 (R & C) of 2012-13 Serial Page No. 268PARTICULAR SPECIFICATIONS (Contd…)

11.3.3.3 GRANITE STONE / BARODA GREEN STONE/ RUBY RED STONE / MARBLE/ KOTA STONE ON SHELVES, PLATFORMS AND WALLS: Wherever shown on drawings stones shall be laid over 10 mm thick cement mortar (1:4) with cement slurry @ 3 kg/sqm including cutting, grinding and polishing with mirror / granite finish all as specified in MES Schedule Part I.

11.3.3.4 CURING, POLISHING AND FINISHING: Refer clause 13.4.7.4 of MES Schedule Part I. However the finishing / polishing of the floor shall be to achieve granite / mirror finish.

11.3.4 CERAMIC / RECTIFIED TILES

11.3.4.1 GENERAL

(a) The surface on which the tiles are to be laid shall be free from dirt, dust and not be smooth.

(b) Tiles shall be soaked in water before laying as recommended by the manufacturers.

(c) The size and shade variation is inherent characteristics of ceramic tiles. To achieve pleasantand natural effect of shade, tiles of various boxes shall be mixed before laying.

(d) Provide adequate gap between tiles to allow floor base moisture to escape.

(e) Joints shall be left open between tiles for 1 to 3 days depending open the humidity beforegrouting. The sealing of joints should not be carried out before 24 hrs, after fixing of tiles.

11.3.4.2 FLOORS: Tiles shall be laid on screed bed / bedding layer of 10 mm thick in cement mortar (1:3) over 20 mm thick PCC (1:2:4) type B-0 over neat cement slurry @ 3 kg/sqm over RCC slab or sub base. The joints shall be grouted and pointed with white cement mixed with pigment to match with shade of tiles.

11.3.4.3 SKIRTING AND DADO: The tiles in skirting and dado shall be laid over a bedding layer of 10 mm thick in cement mortar (1:4) and as specified in clause 13.40.2 and 13.40.3 of MES schedule part I with cement slurry @ 3 kg/sqm. Grouting and pointing to joints shall be with white cement mixed with pigment to match with shade of tiles.

11.3.5 VITRIFIED TILES

11.3.5.1 FLOORS: Tiles shall be laid on screed bed / bedding layer of 10 mm thick in cement mortar (1:3) over 20 mm thick PCC (1:2:4) type B-0 over neat cement slurry @ 3 kg/sqm over RCC slab or sub base. The joints shall be grouted and pointed with white cement mixed with pigment to match with shade of tiles.

11.3.5.2 SKIRTING: The tiles in skirting and dado shall be laid over a bedding layer of 10 mm thick in cement mortar (1:4) and as specified in clause 13.40.2 and 13.40.3 of MES Schedule Part I with cement slurry @ 3 kg/sqm. Grouting and pointing to joints shall be with white cement mixed with pigment to match with shade of tiles.

11.4 PCC PAVING TILES: Tiles shall be laid over a bedding layer of 15 mm thick in CM (1:6) over 25 mmthick PCC (1:2:4) type B0 over sub base floor.

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11.5 PRE CAST PCC INTERLOCKING TILES / PAVING BLOCKS: Interlocking tiles / blocks shall be laid over 50 mm thick (compacted thickness) sand bed over 100 mm thick (compacted thickness) hard core of broken stones of gauge not exceeding 50 mm. Tiles shall be laid in a pattern as approved by the PM. Grouting of tiles shall be carried out by spreading screened sand on paver/tiles/blocks. Tiles/blocks shall be vibrated suitably as per the manufacturer’s instruction to ensure the joints are filled up properly with sand. Extra sand on the surface shall be swept away removed.

11.6 BRICK STEPS: Risers of brick steps where PCC flooring is to be provided over the treads of brick steps shall have 15 mm thick cement plaster (1:3) finished even and smooth. In case of PCC topping laid over treads of brick step, it shall be 40 mm thick PCC (1:2:4) type B1 and have chequered finish.

12 PLASTERING AND POINTING12.1 GENERAL

12.1.1 Plaster (even if external wall face is pointed) and/or skirting/dado shall be returned in jambs, soffits of lintels and windows cills etc. Where plaster on concrete surfaces is shown to match the adjacent wall surfaces, the mix of plaster shall be as for the plastering on brick surfaces.

12.1.2 All internal plastered surfaces shall be trowelled to a smooth and even surface without using extra cement and external plastered surfaces shall be finished even and fair.

12.1.3 The thickness of plaster mentioned here-in-after is finished thickness exclusive of dubbing coat. Plastering & dubbing coat shall, however be done in one operation with plaster.

12.1.4 All corners, angles, junctions and edges shall be truly vertical or horizontal as the case may be and shall be carefully finished. Corners around jambs of opening and junction of walls shall be rounded to minimum radius to 5 mm. 12 mm wide groove at junction of all walls and RCC slabs to the entire thickness of wall plaster shall be provided. Also trowel grooves shall be provided at junction of walls and RCC columns or any other dissimilar material i.e. wooden/steel chowkhats etc.

12.1.5 Contractor’s attention is invited to local practices and the local availability of materials like bricks, form work etc., and cater for any extra dubbing required for touching up properly and for smooth and even surfaces. This shall be deemed to have been included in the lump sum or the item rate quoted for plasterwork as applicable.

12.1.6 External finish shall be taken 15 cms below the ground level except where plinth protection/ramp & the like is provided. In which case, it shall be taken upto the bottom of the plinth protection/ramp etc.

12.1.7 GROOVE AT JUNCTION OF RCC WORK AND BRICK WORK: Groove in plaster shall be provided only at inside surfaces of building at the junctions of RCC work with brick work to indicate the location of junctions. Groove shall be uniform in shape and size. The groove shall be 10 mm wide and depth upto thickness of plaster. No groove shall be provided on external surfaces of building. Chicken wire mesh 150 mm wide (75 mm on both sides of junction) of size 0.71 mm dia wire with size of mesh 25 mm shall be provided with tinned tacks/black shoe nails at junction of masonry and RCC slab/columns/ lintels/beams etc. on untreated external surfaces of building and then plastered as specified.

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C.A. No. DG MAP/PHASE-II/GPR/PKG-14 (R & C) of 2012-13 Serial Page No. 270

PARTICULAR SPECIFICATIONS (Contd…)

12.2 MATERIALS

12.2.1 CEMENT: Cement shall be as specified in clause 4 of Particular Specification here in before.

12.2.2 SAND: Refer clause 14.5 of MES Schedule Part-I.

12.3 WORKMANSHIP

12.3.1 INTERNAL PLASTER

Cement plaster on internal surface above skirting/dado shall be done in cement and sand mortar (1:6) in one coat and shall be 12 mm thick at the proudest part, unless specified otherwise elsewhere in Particular Specification or shown on drawings. Mortar for dubbing out and rendering shall be of same type and mix. Dubbing out may be executed as separate coat or along with the rendering coat.

12.3.2 EXTERNAL PLASTER (WASHED GRIT)

Washed grit plaster shall be provided on external surfaces in two layers with following specifications: -

(i) Under layer shall be 15 mm thick in cement mortar (1:4) and shall be brought to true level and plumb by using wooden float after thoroughly wetting the surface. The surface shall be further roughened by furrowing with a scratching tool. The surface shall be kept wet till top layer is applied. Irrespective of what is shown on drawings, GI chicken wire mesh 22 gauge and 20 mm mesh shall be fixed all along RCC and brick work joints in a width of 300 mm with cement slurry and nails before providing under layer of plaster as aforesaid.

(ii) Grooves of size 20 x 15 mm or as specified shall be provided as directed by the Project Manager to form a design pattern on the external face as shown on drawing. Tapered wooden battens to match the size and shape of the grooves shall be fixed over the under layer with nails before the application of the top layer. It shall be fixed to ensure that top panels are not damaged.

(iii) All white or coloured marble chipping shall be washed in clean water before use.

(iv) Top layer shall be 15 mm thick comprising of mixed white & grey cement (using approximately35% white cement and 65% grey cement) with reflectance 50=1% or silver Cement of Companies like M/s Shriram Cement works with reflectance 50=1%, marble powder and white/approved coloured marble chips in proportion of 1:0.5:2 (1 mixed white & grey cement or Silver cement :0.5 marble powder and 2 marble chipping of 12 mm and down size including 15% pattern using white cement with pigments as approved by Project Manager. Before application of top layer, the surface of the under layer shall be cleaned and a coat of grey cement slurry @ 2 Kg of cement per sqm shall be applied. The top layer shall be applied in uniform thickness and sufficiently pressed with wooden float for proper bonding with the under layer and finished to a true and plumb surface. Finished surface of top layer after the mix has taken the initial set shall be scrubbed and washed with suitable brushes and water mixed with H2SO4 @ 5%. Scrubbing and washing shall continue till the stone chipping are sufficiently exposed to its natural colour.

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Condition 12.3.2 (Contd…)

(v) Marble stone chippings of size 12 mm down size of approved colours, marble powder of approved quality and pigment of approved colour shall be used.

(vi) Before application of under layer of plaster, the surfaces shall be prepared by raking out jointsproperly and brushing out the dust and loose mortar and washed thoroughly with water andkept wet. For the portion of under plaster below plinth level, integral water proofing compoundshall be mixed in mortar.

(vii) Grooves shall be finished with cement slurry mixed with approved water proofing compound.(viii) A sample shall be got approved by the contractor from the Project Manager prior to start of

work.

12.3.3 All exposed surfaces of beams, columns, lintels, cills and the like coming in conjunction with plastered surfaces shall be plastered/finished as per adjoining surfaces and to the thickness required to bring them in the same plane as that of adjoining plaster/finish.

12.3.4 Extra work over plastering (externally) as shown on drawing shall be done in isolated width or in raisedbands.

13 WHITE / COLOUR WASH AND DISTEMPERING

13.1 MATERIALS

13.1.1 LIME - Lime used for white washing shall be freshly burnt fat lime (Class C) or magnesium lime (Class D or F), white in colour, conforming to IS-712-1984 specification for building limes.

13.1.2 OIL BOUND DISTEMPERRefer clause 15.6 of MES Schedule Part-I. Make of Oil bound distemper and ready mixed wall puttyshall be as given in Appendix ‘E’.

13.1.3 DRY DISTEMPERRefer Clause 15.5 of MES Schedule Part - I. Make of dry distemper shall be as given in Appendix E.

13.1.4 ACRYLIC DISTEMPERAcrylic Distemper shall be of first quality of makes as given in Appendix E.

13.2 WORKMANSHIP

13.2.1 PREPARATION OF SURFACESRefer clause 15.1`2 of MES Schedule Part-I.

13.2.2 PREPARATION OF WHITE WASHRefer clause 15.12.3 of MES Schedule Part-I.

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13.2.3 PREPARATION OF COLOUR WASH Refer clause of 15.12.4 of MES Schedule Part-I. Colours used in the preparation of the colour wash shall be first dissolved in water. Sufficient quantity of solution enough to produce the colour of required shade shall be strained through a clean course cloth and the filtrate mixed evenly and thoroughly to the white wash.

13.2.4 Preparation of New Surfaces - The surface shall be thoroughly cleaned of dust, dirt efflorescence, chalking, grease, mortar drops and other foreign matter. The surface shall be sand papered with grade I abrasive paper and dusted off to achieve an even and smooth surface. If surface so obtained is uneven, it shall be brought to a perfectly even surface by applying putty and allowing it to dry completely and then it shall be rubbed with the abrasive paper and dusted off.

13.2.5 APPLICATION OF WHITE WASH - Refer clause 15.12.5 of MES Schedule Part-I. Unless otherwise indicated, three coats of white wash shall be applied so that the surface presents a smooth and uniform finish through which the plaster does not show. The finished dry surface shall not show any signs of cracking and peeling and the whitewash shall not come off readily on the hand, when rubbed. For white wash on ceiling adequate quantity of zinc oxide shall be added to lime wash for achieving pure white shade.

13.2.6 DISTEMPERING WITH OIL BOUND DISTEMPER 13.2.6.1Where indicated on drawings, oil bound distemper in two coats shall be provided over one coat of

ready mixed water resistant cement based wall putty not less than 1 mm thick on plastered surfaces.

13.3 DISTEMPERING WITH DRY DISTEMPER

13.3.1 Priming Coat - For distempering with dry distemper, the priming coat, where indicated shall be a coat of clear colle composed of 1 Kg of glue mixed with 15 liters of boiling water. The mixture shall be suitably tinted where required. Priming coat shall be applied by brushing and allowed to dry before distempering coat is given.

13.3.2 Preparation of Distemper - The dry distemper shall be added to clean warm water and stirred slowly using 0.6 liters of water per Kg of distemper or in proportion as specified by the manufacturer. The mixture shall be allowed to stand for at least 30 minutes before use. The mixture shall be well stirred before application to maintain an even consistency.

13.4 DISTEMPERING WITH OIL BOUND DISTEMPER ACRYLIC

13.4.1 Irrespective of what is shown on drgs / schedule of finishes, in officers DUs, oil bound distemper acrylic shall be provided on internal surfaces in 2-coats as per manufacturer’s instructions after preparation of new surfaces as per clause 13.2.4 here-in-before. Ready mixed water resistant cement based wall putty of thickness not less than 1mm shall be applied on plastered surfaces before applying oil bound distemper acrylic. Oil bound distemper acrylic shall be of first quality of make mentioned in Appendix ‘E’.

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13.5 DEFECTS LIABILITY PERIOD AGAINST DETERIORATION OF OIL BOUND DISTEMPER ACRYLIC

13.5.1 The defects liability (guarantee) period against deterioration of oil bound distemper acrylic shall be 05 years and the contractor shall be responsible to keep the distempered surface free from deterioration for the guarantee period after certified date of completion.

13.5.2 Security deposit on account of above guarantee shall be with-held from the contractor’s payments during the guarantee period. The amount of security deposit for this contract shall be calculated as per the scale given below on the amount at contract rates quoted by the contractor in Sch A for the buildings for which the said distempering has been specified. The security deposit shall be refunded to contractor after expiry of this period. Alternatively, the contractor may give a separate interest bearing term deposit receipt to project manager valid for the guarantee period for the above-mentioned amount.

AMOUNT OF DISTEMPERING WITH AMOUNT TO BE RETAINED FROMACRYLIC DISTEMPER AT CONTRACT CONTRACTOR'S DUES.

RATES.

(i) Upto Rs 5 lakhs 2%of amount subject to minimum of Rs.2000/- and enhanced by 25%.

(ii) Over Rs 5 lakhs and upto Rs 10 lakhs 2% of amount and enhanced by 25%.

(ii) Over Rs 10 lakhs and upto Rs 20 Rs 20,000/- plus 1.5% of amount inlakhs excess of Rs 10 lakhs subject to a

maximum of Rs 30,000/- and enhancedby 25%.

(iv) Over Rs 20 lakhs and upto Rs 40 1.5% of the amount and enhanced bylakhs 25%.

(v) Over Rs 40 lakhs 1.5% of the amount and enhanced by25%.

13.5.3 If the PM, at any time during the construction or prior to the expiry of Guarantee period, found that the distempered surfaces have been deteriorated, the contractor, on demand in writing from the PM, will forthwith undertake to carryout rectification work to the entire satisfaction of PM.

13.5.4 In the event of contractor’s failure to comply with the PM’s direction within the stipulated period, the work shall be got carried out at the risk and cost of the contractor. The liability of the contractor under this condition shall not however be extended beyond the guarantee period from the certified date of completion unless the notice was served on the contractor previously to rectify such defects.

13.5.5 The contractor shall indicate the Contract No., name of contractor, the date of completion of the work and the date of expiry of the guarantee period by engraving and painting black, on the same plaster plate as specified in clause 10.3.5 here in before.

14 GLAZING

14.1 GENERAL- Glazing shall be as per the drawings and as per manufacturer’s instructions for doors,

C.A. No. DG MAP/PHASE-II/GPR/PKG-14 (R & C) of 2012-13 Serial Page No. 274windows, CSW’s, vents, north light etc.

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14.2 MATERIALS

14.2.1 SHEET GLASS: Refer Para 16.2 of MES Schedule Part-I. The sheet glass shall be of good quality/ordinary quality for glazing purpose. The nominal thickness of sheet glass shall be 4 mm for panes upto 0.5 Sq. m in size and 5 mm for panes exceeding 0.5 Sq. m in size. The glass sheet should be free from specks, bubbles, smoke wanes, air holes and other defects.

14.2.2 OBSCURED / PIN HEADED GLASS: Refer Para 16.3 of MES Schedule Part-I. The window/vents, CSWs panes of toilets/WC’s and baths shall be of figured glass, 4 mm thick unless otherwise indicated on drawings.

14.2.3 WIRED GLASS: Refer Para 16.3 of MES Schedule Part-I. Unless otherwise mentioned on drawings,the nominal thickness of wired glass shall be 6.4 mm.

14.2.4 GLASS FOR ALUMINIUM JOINERY: Glass shall be of selected quality. Unless otherwise mentionedon drawings, the nominal thickness of sheet glass shall be 5 mm. Where tinted glass mentioned in thedrawings, the same shall be of shade approved by the PM.

14.2.5 PUTTY: Refer Para 16.5 of MES Schedule, Part-I.

14.3 WORKMANSHIP:

14.3.1 PREPARATION OF GLAZING: Refer clause 16.7.1, 16.7.2 and 16.7.4 of MES Schedule, Part-I.

14.3.2 GLAZING IN STEEL SURROUNDS: Refer Clause 16.7.4 & 16.10 of MES Schedule Part-I.

14.3.3 The glass shall be fixed to wooden shutters with wooden beads as shown on drawings and asspecified in clause 16.9 on page 331 of MES Schedule (Part I). Wooden beads shall be of 1st classhard wood teak of size shown on drawings.

14.3.4 The contractor shall produce vouchers / certificates from suppliers/manufacturers to the PM as a proofthat the putty conforms to IS-419.

15 PAINTING

15.1 GENERAL

15.1.1 PAINTS AND ALLIED MATERIALS: Refer Para 17.2 of MES Schedule, Part-I. Painting work-generally-refer Para 17.3 of MES Schedule Part-I.

15.1.2 The contractor shall inform the PM within four weeks of the acceptance of the tender, the brand names of the manufacturers of paint proposed to be used in the works and submit sample thereof well in time and obtain prior written approval of the PM before their use in the work.

15.1.3 The contractor shall when so required by the PM produce certificate from the manufactures or their representative to establish that the brands of paint purchased by the contractor from them satisfy the requirements of the relevant Indian Standard.

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15.1.4 The PM will approve tint of paint if the same is not mentioned in Schedule of Finishes/drawings.

15.1.5 Where painting is indicated in ‘Schedule of Finishes’ it shall be done in three coats, i.e. two coats (under & finishing) of synthetic enamel paint over a coat of primer. Pink primer & red oxide primer shall be used for wooden and wood based surfaces and steel surfaces respectively unless otherwise specified here in after.

15.1.6 Paint and primer shall be of same make/manufacturers.

15.1.7 Wire cloth, steel for reinforcement and galvanized steelwork shall be untreated.

15.1.8 Other wood & wood based and steel surfaces exposed to view but not covered in ‘Schedule of Finishes’ or their finishing is not specifically indicated in other drawings or specified else where shall be given two coats of synthetic enamel paint over a coat of primer of tint as directed by the PM.

15.1.9 Other wood & wood based and steel surfaces which are not exposed to view but not covered in ‘Schedule of Finishes’ or their finishing is not specifically indicated in other drawings or specified else where shall be given a coat of primer all as directed by the PM.

15.2 MATERIALS

15.2.1 All synthetic enamel paint and primer shall be of first quality manufactured by the standard firms ofmake as per Appendix ‘E’.

15.2.2 ALUMINIUM PAINT: Aluminium paint shall conform to IS: 2339.

15.3 WORKMANSHIP

15.3.1 PAINTING-WOODWORK: Refer clause 17.6 of MES Schedule, Part-I. Where painting with synthetic enamel paint is indicated on drawings it shall be given two coats of synthetic enamel paint over a coat of pink primer after preparation of surfaces.

15.3.2 PAINTING-STEEL & IRON WORK: Refer clause 17.8 of MES Schedule, Part-I. Where painting with synthetic enamel paint is indicated on drawings it shall be given two coats of synthetic enamel paint over a coat of red oxide primer after preparation of surfaces.

15.3.3 ALUMINIUM PAINT: Where aluminium paint is indicated on drawings it shall be done in two coats over a coat of red oxide primer after preparation of surfaces.

15.3.4 FRENCH POLISH: The wood work in railing and built in furniture if any where indicated to be polished shall be polished with French polish all as specified in clause 17.7.4 of MES Schedule, Part-I. All the French polished surfaces shall be treated with PU finish. French polish shall be ready made of make mentioned in Appendix ‘E’.

15.3.5 TARRING: Refer clause 17.12 of MES Schedule, Part-I. The back of wooden chowkats in contact with brick work/plaster etc. and also wooden/steel surfaces embedded in walls shall be given two coats of tar. Hold fast shall be given two coats of tar and sanded.

15.3.6 CEMENT SLURRY: Portions of MS bolts, lugs, anchor bolts and anchoring other than anchor bolts etc. embedded in concrete shall be treated with neat cement slurry.


16. MISCELLANEOUS ITEMS16.1 GENERAL: Specifications for miscellaneous items are for guidance only. Drawings of respective items

must be studied to avoid any ambiguity. All fittings and fixtures shown on drawings unless omitted specifically shall be provided as per details given in the drawings and their cost is deemed to be included in the lump sum cost of buildings in Schedule ‘A’, Section-I.

16.2 STAINLESS STEEL SINK AND DRAINAGE BOARD: Stainless steel sink with drainage board at situation where shown on drawings shall be provided. Stainless steel sink with drainage board shall be of glossy finish, ISI marked, of make as specified in Appendix ‘E’. The sink with drainage board shall have over all size shall be 41” x 20” and bowl size 20” x 16” with 8” depth for officer’s DUs. For JCO’s / OR’s the overall size shall be 32” x 18” and bowl size 16” x 14” with 8” depth. The grade of stainless steel shall be 304 AISI and thickness of steel sheet shall be 1 mm. The sink shall be provided with suitable size of brackets and 32 mm bore GI pipe medium grade waste pipe with coupling. One No. central hole CP brass sink mixer shall be provided for each sink.

16.3 MILD STEEL RUNGS: Mild steel rungs shall be provided as per details shown on drawings.

16.4 WATER STORAGE TANKS: Rotational moulded HDPE overhead water tanks of capacity as shown on drawings shall be ‘ISI’ marked double layered of make as specified in Appendix ‘E’.

16.5 RAILING FOR STAIR CASE AND BALCONY: Railing for stair case and RCC parapet and railing of balcony shall be provided as per details shown on drawings. MS pipe for hand rail shall be of light grade un-galvanized pipe 50 mm bore unless otherwise specified or shown on drawings. For balcony / parapet railing, mortice holes left in concrete / masonry for fixing balusters of railing shall be grouted in CM (1:2) and finished to match the adjoining surfaces. For stair case railing dowel bar as shown on drawings shall be provided during casting. Welding of MS pipe with flat iron frames/other steel sections of railing shall be with running welding. All mild steel surfaces shall be painted with 2-coats of synthetic enamel paint over a coat of primer. The embedded portion shall be tarred before fixing.

16.6 RCC JALLI: Where RCC jalli has been shown on drawings, the same shall be precast RCC (1 cement: 2 coarse sand: 1 stone aggregate of 6 mm nominal size). The thickness of jali shall be 50 mm unless otherwise shown on drawings. The RCC Jali shall be reinforced with 6 mm MS bars and 3 mm dia MS wire around the hollow space of Jali. Precast RCC Jali units shall be set and jointed in CM (1:3) in the situation shown in the drawings. Exposed faces of Jali shall be brought to a fair and even surface. Samples of RCC Jali shall be got approved from the PM. In the event of deviation, RCC Jali specified herein shall be priced as per condition 53 of General Conditions of Contract. RCC Jali shall be painted with two coats of cement based paint as specified in relevant clauses of MES Schedule Part I.

16.7 ARRANGEMENT FOR DRYING OF CLOTHES: Where shown on drawings, arrangement for drying of clothes shall be of MS work as per details given in drawings. MS brackets shall be embedded in walls / parapet with MS hold fast of suitable size in PCC blocks (15 x 10 x 10 cm) 1:2:4 type B-0. All mild steel surfaces shall be given 2-coats of synthetic enamel paint over a coat of red oxide primer and portion embedded in masonry shall be tarred before fixing.

16.8 STAINLESS STEEL PLATE RACKS: Stainless steel plate racks at situation where shown on drawings shall be provided. It shall be of size 900 x 750 x 250 mm for Officers / Major DUs and 750 x 600 x 250 mm for JCOs / OR DUs and shall be ISI marked and of make as specified in Appendix ‘E’. The grade of stainless steel shall be 304 AISI & thickness of stainless steel sheet shall be 1 mm. Plate rack shall be fixed to wall with CP screws & PVC rawl plugs of suitable sizes.

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16.9 COOLER STANDS: Cooler stands where shown on drawings shall be of mild steel as per details given in drawings. Mild steel brackets shall be embedded in walls in PCC blocks (1:2:4) type B-0 and of size 15 x 10 x 10 cms. All mild steel surfaces shall be given two coats of synthetic enamel paint over a coat of red oxide primer and embedded portion in masonry shall be tarred before fixing.

16.10 PVC SHEET IN SHAFT COVER: 1.5 mm thick PVC sheet as approved by the PM to cover shaft as shown on drawings shall be fixed to walls with chromium plated screws and PVC rawl plugs.

16.11 LETTER BOX: Letter box shall be factory made of 1 mm thick mild steel sheet as per details & on location as shown on drawings shall be provided in each block. The size of letter box for each individual DU shall be 315 mm x 355 mm x 115 mm deep. The typical details of letter box shown on drawing No.MAP/GPL-BHU/SD/611 sheet-1 are for a block of 4 DUs. The same details shall be followed for blocks of different Nos. of DUs, with one No. letter box of size 315 mm x 355 mm x 115 mm for each individual DU. The quoted unit rates / lump sum for each block in Schedule ‘A’ Section-I shall be deemed to include for these provisions and nothing extra shall be admissible on this account. Each letter box shall be provided with suitable locking arrangement. All steel surfaces shall be painted with two coats of synthetic enamel paint over a coat of red oxide primer all as specified. Details of wooden letter box, shown on drawings shall be deemed to be deleted.

16.12 LOFT DOORS: Door for each entry to loft shall be provided irrespective of whether shown in drawings or not. Frames of loft doors shall be of pressed steel. The shutters of loft door shall be same as specified for cupboard here-in-after with piano hinges. Hasp & staple, magnetic catcher and knob shall be provided to each loft door.

16.13 CUPBOARDS: Cupboards shall be provided where shown on drawings and as per details shown therein. Frames of cupboards shall be of pressed steel. Cupboard shutters, shall be of 18 mm thick pre-laminated particle board one side decorative choice lamination and other side having balancing white lamination & these shall be three layered, exterior grade bonded with phenol formaldehyde synthetic resin and conforming to IS:12823 and shall be of approved make as approved by the PM. The pre-lamination shall be grade I type I conforming to IS: 12823. The internal shelves and partitions shall be of 18mm thick block board Interior grade, commercial type all edges shall be properly sealed with 6 mm thick teak wood edging with width equal to the thickness of board fixed with water resistant adhesive. GI medium grade hanging rod of 19 mm dia with bracket, 10 mm dia tie hanger, One barrel Bolt, 2 knobs of 40 mm dia, hasp & staple and cup-board lock shall be provided. GI continuous piano hinges shall be provided with chromium plated screws. All other fittings and fixing arrangements shall be as shown on drawing. All wood and wood based surfaces except pre-laminated surfaces shall be painted with two coats of synthetic enamel paint over a coat of primer after preparation of surfaces.

16.14 KITCHEN CABINETS: Various type of kitchen cabinets where shown on drawings shall be provided as per details given therein. Cabinet shutters shall be of 18 mm thick pre-laminated particle board exterior grade bonded with phenol formaldehyde synthetic resin conforming to IS-12823, having one side decorative choice lamination and other side having balancing white lamination. The make of particle board shall be as per list given in Appendix ‘E’. All shelves and partitions of cabinets shall be of 18 mm thick block board Interior grade, commercial type. All edges of particle boards shall be provided with 6 mm thick teak wood edging with width equal to the thickness of board fixed with water resistant adhesive. Shutters shall be fixed with GI continuous piano hinges with chromium plated screws. All other fittings and fixtures shall be provided all as shown on drawings. All wooden surfaces except pre-laminated surfaces shall be painted with two coats of synthetic enamel paint over a coat of pink primer after preparation of surfaces.

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16.15 STUDY ALCOVE: Study Alcove shall be provided where shown on drawings and as per details shown therein. Frame shall be of pressed steel. Particle board for various members i.e. table top, shelves, drawer, partitions etc. shall be 18 mm thick pre-laminated particle board, one side decorative choice lamination and other side balancing white lamination of exterior grade bonded with phenol formaldehyde synthetic enamel resin and confirming to IS-12823. All steel work and fittings shall be as shown on drawings. Sliding rails for key board shall be of stainless steel irrespective of whatever is shown on drawings. All edges of particle board shall be provided with 6 mm thick teak wood edging with width equal to thickness of board fixed with water resistant adhesive. All wooden surfaces except pre-laminated surfaces shall be painted with 2-coats of synthetic paint over a coat of primer after preparation of surfaces.

16.16 LOWER CUPBOARD / CABINET UNITS BELOW SHELVES: Lower cupboard / cabinet units below shelves shall be provided where shown on drawings and as per details shown therein. The specifications of various members of lower cupboard / cabinet units below shelves including shutters, shelves, partitions, builder’s hardware, fittings and fixtures required for these cupboards / cabinets shall be same as those specified for “Kitchen Cabinets” here-in-before.

17 SANITARY AND TOILET FITTINGS

17.1 GENERAL

17.1.1 All sanitary fittings / appliances shall be of vitreous china (in superior white colour) of makes /manufactures as given in Appendix ‘E’, first quality and shall confirm to IS-2556 and the specificrequirement as mentioned in relevant clause of MES schedule. However flushing cisterns for waterclosets shall be of PVC as specified.

17.1.2 Flush pipe and socket of flushing rim of WC shall be jointed with white and red lead cement (white & red lead in equal portion by weight) and linseed oil added to form paste.

17.1.3 ‘P’ & ‘S’ traps shall be of UPVC and shall be jointed as specified in MES Schedule.

17.1.4 The sizes given here-in-after are approximate sizes. The size of sanitary fittings to be provided shall be the nearest size as per manufacturer’s catalogue as approved by PM.

17.2 WATER CLOSETS

17.2.1 WATER CLOSET PEDESTAL PATTERN (EWC): Pedestal pattern water closet (EWC) shall be provided where shown on drawings. Long arm trap should be provided to avoid joints inside floor or wall. The closet shall be fixed in position with brass screws of suitable size. It shall consist of the followings: -

(a) Water closet wash down pattern of vitreous china, Ist quality, white colour of height 40 cm withconcealed ‘P’ or ‘S’ trap.

(b) Plastic seat and cover with flat underside solid moulding closed from pattern shall be as per IS-2548 (Pt-I) and shall be of shade as approved by PM, fixed with chromium plated hingingdevice.

(c) Low level PVC flushing cistern of 3/6 litres dual capacity ‘ISI’ marked with IS-7231 including 32mm bore PVC flush pipe of sufficient length, internal fittings (Valveless syphonic), brass handleetc.

(d) A pair of cast iron brackets with painting as specified.


PARTICULAR SPECIFICATIONS (Contd…) Condition 17.2.1 (Contd…)

(c) The WC in officers Qtrs, shall be fitted with health faucet chromium plated rising spray with wall bracket with 1.5 mtr long flexible metallic tube, of make GEM Cat No 350083 or approved equivalent complete with C.P. angle valve. The WC in JCO’s/OR’s Qtrs, shall be fitted with chromium plated jet spray with PVC pipe with adopter, complete with C.P. angle valve.

17.2.2 WATER CLOSET ANGLO INDIAN TYPE: Water closet Anglo Indian Type shall be provided where shown on drawings. Water closet (Anglo Indian type) with 'P' trap shall be of vitreous china, Ist quality, UNIVERSAL as per catalogue No. 2061 white or' catalogue No. 200120 of Hindware make or equivalent from the makes given in Appendix ‘E’ and as approved by the PM. WC with 'P' trap shall be screwed to hard wood plug embedded/fixed to floor. Low level flushing cistern PVC 3/6 litre dual flush, feather touch operated bearing IS-7231 with plastic seat cover bearing number IS-2548 (Part I) 1996. Seat shall be screwed to WC and shall be of solid PVC/ fibre. Low level flushing cistern shall be of make as per the list of approved list of makes/agencies and as approved by the PM. Cisterns shall be fixed to walls by means of suitable size screws and wooden plugs. The WC shall be fitted with chromium plated jet spray with PVC pipe with adopter.

17.3 WASH HAND BASIN:

(a) All rectangular wash hand basins shall be flat back of size 550 x 400 mm wall mounting type asper Cat No. 10001 of Hindware or equivalent of other makes as specified in Appendix ‘E’. All oval wash hand basins shall be of size 560 x 410mm as per Cat No. 10016 of Hindware or equivalent of other makes as specified in Appendix ‘E’ including all necessary arrangements. Each Wash Hand Basin shall consist of following: -

(i) CP brass waste fitting 32 mm dia with over flow.

(ii) CP brass bottle trap 32 mm with CP brass pipe to wall with CP brass cast wall flange.

(iii) GI Waste pipe 32 mm dia (medium grade)

(iv) A pair of CI bracket duly painted. The brackets shall be embedded in walls in cementconcrete (1:2:4) type B1 block of size 10 cm x 10 cm x 23 cm. Necessary counter shall beprovided where shown on drawing.

(v) Mirror for JCO/OR & mirror with cabinet for offrs.

(vi) One No. CP brass central hole basin mixer.

(b) In officers DUs, the wash hand basin shall be mounted on 18 mm thick granite topping stone ofruby red colour.

17.4 SOAP DISH: Irrespective of what is shown on drawings, soap dish one number shall be provided in each toilet. Soap dish shall be of stainless steel and of size & make as approved by PM. It shall be fixed with chromium plated brass screws & PVC rawl plugs.

Contd...



17.5 LOOKING MIRROR: The mirror shall be of polished float glass of size 600 x 600 x 6 mm thick. Mirror shall be beveled edged, mounted on 2 mm thick HIPS (an engg thermo plastic) sheet pasted with vacuum pressure technique and beveled edges shall be covered with silicon coating. It shall be fixed with 4 Nos round steel studs of 7 mm thick in 19 mm dia on front side to support 2 Nos steel wall hanging hooks with plastic washers on the back side. The make of mirror shall be Modigaurd / Swastic / Atul.

17.6 MIRROR WITH CABINET: Mirror with cabinet for officer’s DUs shall be of model “Carnation” 622 x 432mm of Commander make or equivalent of specified make.

17.7 TOWEL RAIL / RACK

For OR’s / JCO’s: Aluminium anodized 20 mm dia tubular towel rail 60 cm long including its bracket shall be provided in each toilet. Wall thickness of towel rail shall be 1.6 mm.

For Officers: Brass chromium plated 20 mm dia tubular towel rack 60 cm long including its bracket shall be provided in each toilet. Wall thickness of towel rail shall be 1.6 mm.

17.8 FLUSHING CISTERN: Flushing cistern 3 / 6 Ltr dual capacity shall be ISI marked, white, feather touch PVC low level of make as listed in Appendix ‘E’ and as approved by PM with 32 mm bore polythene flush pipe of sufficient length, including internal fitting (valveless syphonic), brass handle, ISI marked (IS: 7231).

17.9 TOILET PAPER HOLDER: Refer clause 18.39 & 18.92 of MES Schedule Part-I (2009). Toilet paper holder shall be of chromium plated brass. It shall be fixed with chromium plated brass screws & PVC rawl plugs.

17.10 GLASS SHELVES: Two corner shelves with 8 mm thick float glass shall be provided in one corner of each toilet in each DU as directed by PM. The radius of each shelf shall be 300 mm.

17.11 GLASS TRAY: Glass tray shall consist of an assembly of glass shelf placed on anodized aluminium angle frame fixed with chromium plated brass screws to plugs in the wall. The size of glass shelf shall be 60 x 12 cm unless otherwise specified elsewhere or shown on drawings. The shelf shall be of 5.5 mm thick sheet glass, ordinary quality with edges rounded off.

Contd...



18. PLUMBING

18.1 GENERAL: The contractor shall employ qualified and licensed plumber for supervision of installation and testing of the sanitary fitting and plumbing. The connection shall be provided as indicated in drawings. The layout of soil, waste, vent and anti syphonage pipes shall be marked on the walls in coloured chalk and approved by the PM before execution of work. The unit rates of buildings given in Sch 'A' Sec-I also include inter-alia the provision of the following: -

(a) All sanitary ware, fittings, fixtures, accessories, etc., of first quality ISI marked.

(b) Plumbing and sanitation complete upto & 1st manhole. Waste pipe shall be provided upto andincluding Gully Trap and 100 mm dia (internal dia) SGSW Pipe from Gully trap to firstmanholes, anti-syphonage pipes and vent pipes including 1st manholes.

(c) All waste pipes up to and including provision of gully traps embedded in concrete below groundlevel. Waste pipe from gully traps to first manhole shall be 100 mm dia SGSW pipe.

(d) Vent pipes and anti syphonage pipes.

(e) All plumbing pipes / fittings shall be of UPVC.

18.2 PIPE AND FITTINGS: General location of soil, waste, vent, anti syphonage pipes are indicated in the drawings. Detailed layout shall be marked on the walls in coloured chalk and approved by PM

18.2.1 All soil, waste, vent and anti-syphonage pipes including fittings shall be UPVC (SWR). The pipe fitting, laying and jointing shall be done all as specified in clause 18.67.7A on page 382 of SSR Part-I and as per manufacturer’s instructions.

18.2.2 The vent pipes shall be taken from soil pipes to a height of 30 cms, height measured from top of roof (of last storey) to the bottom of the cowl. Cowl shall be provided on top of vent pipes.

18.2.3 Soil pipes shall be taken upto 45 cms below ground level and provided with ducks foot bend.

18.2.4 Soil/drain pipes from ducks foot bend shall be of UPVC (SWR) up to first manhole and waste pipe fromgully traps shall be of SGSW pipe grade 'A' conforming to IS upto first manholes.

18.2.5 The waste pipe shall be taken upto 15 cm. below plinth protection level and provided with ducks footbend.

18.2.6 All exposed bends / branches and other junctions shall be provided with oval pattern access doors with bolts as per relevant IS and 3mm rubber insert packing to make them air and water tight.

18.2.7 The branch connection with the vertical pipes shall be so arranged that the vertical pipe is at least 5 cm away from the face of the wall. It should also be ensured that no joint between branch piece and vertical pipe terminates. Irrespective of what is shown on drawings, separate stacks for soil, waste and anti syphonage pipes shall be provided.

Contd...



18.2.8 Irrespective of what is shown on drawings, sizes of pipes shall be as follows: -

(a) Soil pipes - 110mm OD

(b) Waste pipes - 110mm OD

(c) Anti syphonage pipes & vent pipes - 110mm OD

18.3 FLOOR TRAP

18.3.1 Floor traps shall be of UPVC confirming to relevant IS with chromium plated MS grating. The outlet offloor trap shall be 110 mm diameter. The outlet of floor trap shall be with long arm and shall be jointedto connecting pipes/ branch pieces.

18.3.2 COCKROACH TRAP: In kitchen, stainless steel cockroach trap shall be provided. The material of trapshould be of good quality so that it does not get rusted.

18.3.3 GULLY TRAP: Gully trap shall be salt glazed stone ware with rebated top and 100mm dia (bore) outlet and cast iron or mild steel grating of size 15 cm x 15 cm. It shall be set in cement concrete (1:3:6) Type C-1 foundation of size 53 cm x 53 cm with overall depth equal to depth of gully trap and (10 cm below gully trap) and kerb of P.C.C. (1:2:4) Type B-1 on top of PCC foundation block around CI or MS grating of size 32.5 cm x 32.5 cm. Gully trap shall be provided in the situations where shown on the drawings.

18.4 TRENCHES FOR PIPE LINES UPTO FIRST MANHOLES: The excavation in trenches in soil (mentioned in Particular Specifications clause 3 here in before) shall be done as per the width given in MES SSR Part-I and depth as required at site. The trenches shall be back filled after testing of pipes with excavated earth in layers not exceeding 250 mm and surplus spoil disposed to a distance not exceeding 500 metre.

18.5 SGSW PIPES: SGSW pipes shall be of grade ‘A’ and shall be laid and jointed as specified. These pipes shall be laid on PCC beds laid to falls including packing under, haunching against the sides of the pipes after they are laid and tested. Thickness and width of PCC beds, packing, haunching etc shall be all as mentioned in MES Schedule Part II. Also refer clause 18.28, 18.68 to 18.70.1 of MES Schedule Part-I.

18.6 WORKMANSHIP

18.6.1 GENERAL REQUIREMENTS: Refer clause 18.40 of MES Schedule Pt-I.

18.6.2 JOINTING & FIXING OF UPVC PIPES: Refer clause 18.52 & 18.67.7A of MES Schedule Part-I.

18.6.3 TESTING: All soil, waste & Vent pipes and all fittings shall be tested as specified in clause 18.67.7 of MES Schedule. Record of Testing shall be maintained separately for each building.

Contd...



18.7 MANHOLE COVER: Refer clause 18.30 of MES Schedule Part-I. Manhole cover and frames shall be of grey cast iron light duty and shall confirm to IS-1726. The size of manhole cover & frame shall be all as shown on drawings.

18.8 WASTE FITTINGS: Refer clause 18.20 of MES Schedule Part-I. Waste fittings shall be of brass chromium plated and shall confirm to IS-2963. Waste fitting shall be of nominal size 32 mm for wash hand basin & 50 mm for sinks.

18.9 WASTE PLUG: Refer Clause 18.21 of MES Schedule Part-I. Waste plugs and its accessories shall confirm to IS-3311 and shall be of rubber of hard and durable quality. Waste plug shall have a loose hackle for anchoring chain plug.

18.10 BOTTLE TRAP: Refer clause 18.22.1 of MES Schedule Part-I. The traps shall be chromium plated.The minimum depth of seal shall be 35mm.

18.11 FLUSH PIPE: Refer clause 18.35 of MES Schedule Part-I. Flush pipe shall be of PVC 40mm dia forlow level cistern all as specified and shown on drawings.

18.12 JET SPRAY: Refer Clause 18.107 of MES Schedule Part-I.

19. INTERNAL WATER SUPPLY

19.1 MATERIALS

19.1.1 GENERAL: Materials for water supply works shall be of make mentioned in Appendix ‘E’.

19.2 MILD STEEL GALVANISED TUBE (PIPES) & FITTINGS): Refer Para 18.4 of MES Schedule Part-I.Pipes and fittings shall be ISI marked.

19.3 POLYETHYLENE PIPE CONNECTIONS: Refer Para 18.5 of MES Schedule Part-I.

19.3.1 Weight of chromium-plated adopter for connection of polyethylene pipe/GI pipe shall be not less than40 Gram each.

19.4 BIB TAPS AND STOP VALVES: Refer Clause 18.14 and 18.15 of MES Schedule Part-I. The handles shall be crutch type unless otherwise specified in the description of item. Handle and spindles may be of cast brass. Washers to be used for this purpose shall conform to clause 18.18 of MES Schedule Part-I.

19.5 WORKMANSHIP

19.5.1 GENERAL REQUIREMENTS: Refer clause 18.40 and 18.41 of MES Schedule Part-I. General layout of water supply work is shown in drawings. The exact position of water supply lines and fittings shall be as directed by PM. The contractor shall use proper bends/elbows/tees at turning/corners etc. Bending of pipes is not permitted. The contractor shall provide screwed plug to all open ends of pipe fittings at the end of day work and at time when work is stopped.

19.5.2 EXCAVATION AND PREPARATION OF TRENCHES: Refer specification here in before and clause18.42and 18.50 of MES Schedule Part-I.

C.A. No. DG MAP/PHASE-II/GPR/PKG-14 (R & C) of 2012-13 Serial Page No. 284PARTICULAR SPECIFICATIONS (CONTD…..)

19.5.3 LAYING OF GI PIPE: Refer Paras 18.50, 18.51 and 18.56 of MES Schedule Part-I. Unions shall be provided at suitable places as directed by PM so that long lengths of pipes are not disturbed during cleaning / changing / repair etc. Uncovered threaded portion of pipe shall be painted with approved paint.

19.5.4 FIXING WATER SUPPLY FITTINGS: Refer Paras 18.62 & 18.66 of MES Schedule Part-I.

19.6 GUN METAL GATE VALVE: Refer clause 18.102 of MES Schedule Part-I. Gun metal gate valve shallbe fitted with wheel head, screwed on both ends for iron pipe of sizes as specified. These shall be ISImarked and of make as per list given of Appendix ‘E’.

19.7 BALL VALVE: Refer clause 18.19 of MES Schedule Part-I. Ball valve shall be of brass high pressuretype and shall confirm to IS-1703.

19.8 SHOWER ROSE: Refer clause 18.106 of MES Schedule Part-I. The shower rose shall be of chromiumplated brass with swivel joints of diameter as specified.

19.9 RECORD OF DRAWINGS: Three copies of line plans of completed works indicating the position ofpipe lines, sizes, position of fittings and water control valves etc. shall be submitted by the contractor tothe PM on completion of work.

19.10 DISINFECTION OF PIPING SYSTEM AND STORAGE TANKS: Refer clause 18.114.6 of MESSchedule Part-I.

19.11 TESTING: Refer Paras 18.50.4 and 18.55 of MES Schedule Part-I.

20.0 INTERNAL ELECTRIFICATION

20.1 All electrical work shall be carried out in accordance with these specifications. These specifications shall be read in conjunction with the relevant Indian Standard, NEC, Indian Electricity Rules, MES specification and Regulations. (a) Relevant Indian Standards (b) Indian Electricity Rules 1956 (c) National Electrical Code (d) MES specifications

List of major Indian Standards is given below and latest edition of these shall be applicable: IS-280: Specification for mild steel wire for general engineering purposes IS-371: Ceiling roses IS-694: PVC insulated cables for working voltages up to and including 1100V IS-732: Code of practice for electrical wiring installation IS-1258: Bayonet lamp holder IS-1293: Three pin plugs and socket outlets IS-1646: Code of practice for fire safety of buildings (general) electrical installation IS-2147: Degree of protection provided by enclosure for low voltage switchgear and control gears IS-2215: Starters for fluorescent lamps IS-2268: Electric call bells and buzzers IS-2309: Code of practice for protection of building and allied structures against lightning

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..)20.1(Contd…./-)

IS-2418: Tubular fluorescent lamps for general lighting service IS-2551: Danger notice board IS-2667: Fittings rigid steel conduits for electrical wiring IS-3043: Code of practice for earthing IS-3419: Fittings for rigid non-metallic conduits IS-3480: Flexible steel conduits for electrical wiring IS-3646: Code of practice for interior illumination IS-3837: Accessories for rigid steel conduits for electrical wiring IS-3854: Switches for domestic and similar purposes IS-4160: Interlocking switch socket outlets IS-4615: Switch socket outlets (non-interlocking type) IS-4648: Guide for electrical layout in residential buildings IS-5039: Specification for distribution pillars for voltages not exceeding 1000V IS-5133: Boxes for enclosure of electrical accessories Part-1 : Steel & cast iron boxes IS-5216: Recommendation safety procedures and practices in electrical works. IS-8828: Electrical accessories - circuit breakers for house hold and similar application (MCB) IS-9537: Rigid steel conduits IS-10118: Code of practice for selection, installation and maintenance of switchgear and control gears IS-11353: Guide for uniform system of marking and identification of conductors and apparatus IS-13947: Specification for low voltage switchgear and control gears

20.2 INTERNAL ELECTRIFICATION FOR DWELLING UNITS The Power supply for Each Dwelling unit block shall be taken from the dedicated feeder from nearest Feeder Pillar through underground cable up to the Meter Board of the D.U Block. Meter board shall house the main incoming MCCB, bus bars and outgoing MCB’s and meters for various DU’s of the block. From the meter board, sub main wiring shall be taken in the recessed conduits to the Sub Distribution Board of each DU. The point wiring for lights, fans and sockets shall be taken in the recessed conduits.

20.3 TECHNICAL SPECIFICATIONS

20.3.1 GENERAL REQUIREMENTS

20.3.1.1 MATERIALS

All materials, fittings, appliances etc. used in electrical installation shall comply with the requirements of relevant Indian Standard specifications and shall be well finished. Materials for which Indian Standard specifications do not exist, shall conform in quality to the samples maintained by PM or as approved by him.

20.3.1.2 EXECUTION OF WORK

Unless otherwise exempted under the Indian Electricity Rules, the work of electrical installation shall be carried out under the supervision of a person holding a certificate of competency issued by the recognised authority. The workmen shall also hold certificate of competency. Good workmanship is an essential requirement for compliance with these specifications.

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..)

20.3.1.2 (Contd…)

The work shall be executed in such sections and in a manner as directed by the Project Manager to suit building operations or convenience of users/occupants.

20.3.1.3 TESTING OF INSTALLATION

All electrical work executed shall be systematically tested by the Contractor in the presence of Project Manager to ensure compliance with the specifications laid down. Test results shall be recorded and signed by the Contractor and the PM, if the test results are not acceptable, all required repairs, replacement and extra work of removal and relaying or re-fixing shall be carried out by the Contractor at his expense and installation shall be re-tested until test results indicates compliance with the prescribed requirements.

The Contractor shall supply the necessary apparatus, labour and instruments or equipment required for testing.

20.3.1.4 RECORD OF INSTALLATIONOn completion of the work, the Contractor shall submit to Project Manager complete wiring diagram for each of the installation in the case of internal electrical work, schematic diagram of equipment and connections for substations and switch gear works and the route layout plans in case of external overhead lines or underground cable work. Five sets of all plans along with soft copy in CD shall be submitted and it shall be ensured that the plans indicate complete site data of the installation.

All circuits shall be clearly indicated and numbered in the wiring diagram and all points shall be given the same number as the circuit to which they are electrically connected.

20.3.1.5 SAFETY PROCEDURES & PRACTICESIn all major electrical installations such as sub stations, industrial establishments, transmission & distribution lines and cable networks, safety procedure instructions for working on low, medium and high voltage mains and apparatus and safety practices listed in IS-5216 : Guide for safety procedures and practices in electrical works shall be followed to the extent applicable. The Contractor shall provide all workmen with safety devices and appliances.

20.3.1.6 FIRE SAFETYAll electrical equipment shall satisfy the requirements laid down in IS-1646 : Code of practice for fire safety of buildings (general) electrical installation and IS-3034 : Code of practice for fire safety of industrial buildings, generating stations and distribution stations to the extent applicable.

20.4 ELECTRIFICATION OF RESIDENTIAL BUILDING Electrical wiring inside individual flats shall be in concealed PVC conduits with 1.5 / 2.5 sq. mm. PVC insulated FRLS copper conductor for light point wiring and minimum 4 sq.mm PVC insulated FRLS copper conductor for power point wiring unless otherwise mentioned in Sch ‘A’.

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..)20.4(Contd…)

Separate meter for individual flat shall be installed at meter board on ground floor of each building as described in Schedule ‘A’.

Each meter board shall be earthed to 2 nos. earthing pits.

Separate circuits for staircase and garages shall be provided directly from the dedicated meter and these circuits shall be laid in separate conduits.

20.5 SCALE OF FITTINGS

CONDUIT WIRING

20.5.1 SCOPE

The scope under this section covers rigid PVC conduit wiring for the following:-- Lighting circuits- Power circuits- Telephones & TV points wherever applicable.

- The wiring for mains of individual flat from meter to DB shall be concealed in slab / wall beyondvertical run.

20.5.2 STANDARDS

The following standards and rules shall be applicable:-

1) IS:732 : Code of practice for Electrical Wiring installation (SystemVoltage not exceeding 650V).

2) IS:1646 : Code of practice for fire safety of Buildings (General) ElectricalInstallation.

3) IS : 14927 (Part-I) : PVC casing -n capping & accessories4) IS : 9537 (Part-II) : Rigid steel conduit and accessories.5) IS:1554 : PVC insulated cables6) IS:3854 : Switches for Domestic and similar purposes7) IS:1293 : 3 pin plugs and sockets.8) IS : 4648 : Guide for electrical layout in residential building

20.5.3 CONDUIT WIRING

20.5.3.1 TYPE AND SIZE OF CONDUITS

All rigid PVC conduits used shall conform to IS:3419. The conduit may be threaded type and shall be used with the corresponding accessories. The conduits shall be designated by their nominal outside diameters.

20.5.3.2 BUNCHING OF CABLES

Conductors of different circuits / different phases / different voltages shall be bunched in separate conduits. The number of insulated cables that may be drawn into single conduit is given in the following table with maximum space factor of 40%.

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..)20.5.3.2(Contd…)

Nominal Number and Size of Conduit(mm) outsideCross diameter in diametersection area mm of wires 19/20 25 32 40 50mm2 S/B S/B S/B S/B S/B1.5 1/1.4 7/5 12/10 20/14 --- ---

2.5 1/1.8 6/5 10/8 18/12 --- ---4.0 1/ 2.24 4/3 7/6 12/10 --- ---6 1/ 2.8 3/2 6/5 10/8 --- ---10 1/ 3.55 2/0 5/4 8/7 --- ---16 7/1.7 --- 2/0 4/3 7/6 ---25 7/2.24 --- --- 3/2 5/4 8/635 7/2.5 --- --- 2/0 4/3 7/550 7/3 --- --- --- 2/0 5/4The above table shows maximum capacity of conduits for the simultaneous drawing of cables. Supply to runs of conduit which has distance not exceeding 4.25M between drawn in boxes and which do not deflect from the straight run by an angle more than 15O. The B applies to runs of conduit, which deflect from the straight run by an angle more than 15O.

20.5.3.3 CONDUIT JOINTS

Conduits shall be jointed by means of screwed couplers and screwed accessories only. Where there are long runs of straight conduit, inspection type couplers shall be provided at intervals. Threads on conduits in all cases shall be 13 mm to 19 mm long, sufficient to accommodate full threaded portion of couplers or accessories. For conduit fittings and accessories reference may be made to IS:2667. Cut ends of conduits shall have neither sharp edges nor any burrs as otherwise these may damage the insulation of conductors while drawing them through such pipes.

20.5.3.4 FIXING OF CONDUITS

Conduit pipes shall be fixed by heavy gauge saddles and spacing plates secured to suitable wood plugs or other approved plugs with screws in an approved manner, at a distance of 300mm from the center of such fittings. The saddle shall comply with the requirements of IS:3837.

Where conduit pipes are laid along the trusses, steel joists etc. the same shall be secured by means of ordinary clips or girder clips as required. Where it is not permitted to drill holes in the truss members, suitable clamps with bolts and nuts shall be used. The width and thickness of the ordinary clips or girder clips shall not be less than as given in following table:

Size of conduit (mm) Width of Thicknessclip (mm) of clip

(mm)20 20 0.925 20 0.932 and 25 1.25above

Contd…../-



20.5.3.4 (Contd…)

For concealed conduit, above requirements shall be applicable and in addition, following clauses shall also be complied with. Making of chases Chases in the wall shall be made neatly and shall be of ample dimensions to permit the conduit to be fixed in the desired manner. In the case of building under construction, conduits shall be buried in the wall before plastering and shall be finished neatly after erection of conduit. In case of exposed brick / rubble masonry work, special care shall be taken to fix the conduit and accessories in the position along with the building work. Fixing of conduit in chases Conduit pipe shall be fixed by means of staples or by means of saddles not more than 600mm apart. Fixing of standard bends or elbows shall be avoided as far as practicable and all curves shall be maintained by bending the conduits itself with a higher bending radius, which will permit easy drawing in of conductors. All threaded joints of conduit shall be treated with approved preservative compound to secure protection against rust. Fixing of MS/cast iron conduit boxes in wall Conduit boxes of mild steel or cast iron shall be fixed in the wall with cement and sand mortar 1:2. No screwing of conduit boxes shall be required when fixed in recessed conduit wiring system Inspection Boxes Inspection boxes shall be provided to permit periodical inspection and to facilitate replacement of wires, when necessary. These shall be mounted flush with the wall. Suitable ventilating holes shall be provided in the inspection cover box. To facilitate drawing of wires in the conduit, galvanized iron fish wire of 3.25mm diameter shall be provided along with laying of recessed conduit.

20.5.3.5 Bends in conduitAll necessary bends in the system including diversion shall be done by bending conduit or by inserting suitable solid or inspection type normal bends, elbows or similar fittings or by fixing cast iron inspection boxes as approved by PM . Conduit fittings shall be avoided, as far as possible, in outdoor installations. Radius of bends in conduit shall not be less than 75mm.

20.5.3.6 OutletsThe switch or regulator box shall be made of metal on all sides, except on the front. In the case of cast iron boxes wall thickness shall be at least 3mm and in case of welded mild steel sheet boxes, the wall thickness shall not be less than 1.22mm for boxes up to size of 200x300mm; and above this size, 1.63mm thick mild steel boxes shall be used. Except where otherwise mentioned, 3mm thick phenolic laminated sheets shall be fixed on the front with brass screws. Clear depth of the box shall not be less than 60mm and this shall be increased suitably to accommodate mounting of fan regulators in flush pattern. The metal box shall be effectively earthed with conduit.

In order to minimize condensation or sweating inside the conduit, all outlets of conduits system shall be properly drained and ventilated in such a manner as to prevent the entry of insects, etc. as far as possible.

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..) 20.5.3.7 Heat may be used to soften the conduit for bending and forming joints in case of plain conduits.

Caution should be exercised in the use of this conduit in locations where the ambient temperatureis 40 C or above. Use of such conduits in places where ambient temperature is 45 C or above isprohibited.

20.5.3.8 Conduits to be rendered continuous before pulling the wires.

20.5.3.9 Conduits to be free from sharp edges and burrs and necessary check nuts & spring washers etc.to be provided for fixing of conduit at each junction box and out boxes.

20.5.4 BLANK

20.5.5 Distribution Board inside the Flat:

20.5.5.1 MCB Distribution Boards of suitable outgoings shall be used. Supply and erection of triple / singlepole and neutral distribution board (conforming to IS 13032 and IEC standard of IP-20) shall be surface / flush mounted as required. This shall be made from 18 gauge sheet steel / CRCA with stove enamel paint / powder coated, suitable for incorporating incoming MCB with required number of outgoing MCBs with electrolytic copper busbar of 100A per phase and shall be erected on angle iron frame complete. ( similar to MDS series 3000DB).

All the DBs / sub DBs in residential and non-residential buildings shall be MCB type.

All MCBs shall be as per IS 8828 of 1996 with required wiring connections and lugs etc.

20.5.5.2 Wires shall conform to IS:694 and comply to following features:-

- PVC insulated stranded copper conductors.- 1100V grade wires for single phase and 3 phase circuits.- Colour coded as below:

Phase-R - RedPhase-Y - YellowPhase-B - BlueNeutral - BlackEarth - Green.

20.5.5.3 Incoming supply system with suitable rating of PVC insulated 1100V grade FRLS wires fromMetering feeder at ground floor to Main Incomer of Flat shall be laid through Metal Conduits.Voltage drop shall be limited to 2.5% of the system voltage for motor load like Pumps etc. and 5%of the system voltage for other loads.

20.5.5.4 Conduit wiring which is passing to Main incoming Flat shall be concealed in the slab with Heavygauge Rigid metal Conduits.

20.5.5.5 Wiring inside the flat shall be with PVC conduits.

20.5.5.6 Load on each Lighting circuit shall not exceed 800 W for lighting and 2000W for Power sockets.Separate circuit mains shall be provided for the independent socket outlets.

20.5.5.7 Circuit mains i.e. from MCB board to switch board for Lighting circuits, shall be 1.5 sq.mm copper conductors, unless otherwise indicated in Schedule ‘A’.

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..) 20.5.5.8 For 5/15A power points, minimum size of 4 sq.mm copper wire shall be used, unless otherwise

indicated in Schedule ‘A’.

20.5.5.9 For 5A independent switch socket points 1.5 sq.mm copper wire shall be used , unless otherwiseindicated in Schedule ‘A’.

20.5.5.10 For each circuit, neutral and earth wire shall be separate.

20.5.6 Point Wiring

20.5.6.1 Light /fan/bell point wiring shall be carried out with FRLS copper PVC wires of 1100V grade alongwith neutral looping method in concealed conduits or on wooden batten as specified in Sch ‘A’.

20.5.6.2 Earthing continuity conductor from DB shall be with FRLS Copper conductors, unless otherwise indicated in Schedule ‘A’.

20.5.6.3 In case of batten, wires shall be laid in one length without any joint.

20.5.6.4 Three core flexible wires of required length shall be provided from ceiling JB/ ceiling rose to thefittings, unless otherwise indicated in Schedule ‘A’.

20.5.6.5 In case of group control point wiring for group of points up to 3 shall be controlled by 5/6A SP piano type switch and group of above 3 points shall be controlled by 15A SP piano type switch.

20.5.6.6 Point wiring shall start from DB / DP for residential installation and for non residential installation,the point wiring shall start from immediate switch board or from boards where circuit mains areprovided.

20.5.6.7 Control switches to be connected to phase conductor only.

20.5.6.8 TV points from each shall be distributed through suitable type of splitters and finally connected tothe junction box at terrace floor of each building. Cable for the system shall be RG-6 for inside the Building.

20.5.6.9 Point wiring for light / fan / bell in residential buildings shall be carried out with ISI mark 2 nos 1.5 sq.mm. copper PVC insulated wire 1.1 kV grade with accessories conforming to IS complete erected with ISI mark piano type switch / bell push erected on MS box with top of 3mm thick hylam sheet / 4mm plywood pasted with Sunmica of thickness not less than 1.5mm with round headed brass screws and cup washers and ISI mark ceiling rose / batten holder / slanting holder erected on PVC accessories / polished double TW folded / screwed board with top of either TW or plywood pasted with Sunmica complete in all respect unless otherwise indicated in Schedule ‘A’.

20.5.6.10 Point wiring for 6A socket on light or fan board in residential buildings shall be carried out with ISI mark 2nos. 1.5 sq.mm 1.1 kV grade PVC insulated & PVC sheathed / PVC insulated copper wire with 1.5 sq.mm ISI mark PVC insulated copper wire in green colour used for earthing for plug both of ISI mark (earth wire shall be taken from DP / DB or intermediate switch board) unless otherwise indicated in Schedule ‘A’.

Contd…../-



20.5.6.11 Point wiring for independent plug in residential buildings shall be carried out with ISI mark 2 nos minimum 2.5 sq.mm. copper PVC insulated wire 1.1 kV grade with 2.5 sq.mm ISI mark PVCinsulated copper wire in green colour used as continuous earth wire end to end complete in allrespects in an approved manner unless otherwise indicated in Schedule ‘A’.

20.5.7 FITTINGS AND ACCESSORIES

20.5.7 CEILING ROSE AND SIMILAR ATTACHMENTS.

20.5.7.1.1 A ceiling rose or any other similar attachment shall not be used on a circuit, the rated voltage ofwhich exceeds 250 V AC.

20.5.7.1.2 Only one flexible cord shall be attached to a ceiling rose. Specially designed ceiling rose shallbe used for multiple pendants.

20.5.7.1.3 A ceiling rose shall not embody fuse terminals as an integral part of it.

20.5.7.2 CONTROL SWITCHES, SOCKETS AND PLUGS.

20.5.7.2.1 The control switches and sockets shall be with ISI marking and of rated capacity. This shallcomply with the following features:-

- Control switches- Silver contacts with shrouded current carrying terminates.- Moulded area formaldehyde casing and cover plates.

20.5.7.2.2 5A / 6A piano switch or bell push and other accessories shall be fixed on best quality sunmicatop, MS board.

20.5.7.2.3 A Socket outlet shall not embody fuse terminals as an integral part of it, but the fuse may beembodied in the plug.

20.5.7.2.4 Every Socket outlet shall be controlled by a switch, which shall preferably be locatedimmediately adjacent thereto or combined therewith.

20.5.7.2.5 The switch controlling the socket outlet shall be connected to the live side.

20.5.7.2.6 Ordinary socket outlet may be fixed at any convenient place about 23 cm. from the floor level,and shall be away from the danger of mechanical injury. In situations where the socket outlet is accessible to children, it is necessary to install an interlocked plug and socket.

20.5.7.2.7 In an earthed system of supply, a socket outlet with plug shall be of three pin type with the third terminal connected to earth. When such socket outlets with plug are connected to any current consuming device of metal or any non-insulating material or both, conductors connecting such current consuming devices shall be of flexible cord with an earthing core. The earthing core shall be secured by connecting between the earth terminal of plug and the current consuming devices.

20.5.7.2.8 Every Plug containing a fuse shall be non-reversible and shall be so arranged and connected that the fuse controls a phase conductor or the non-earthed conductor of the circuit.

Contd…../-



20.5.8 EARTHING

20.5.8.1 Earthing shall be done in accordance with IS-3043 of 1987.

20.5.8.2 For each building, earth stations shall be provided as, 2nos for electrical system and requirednumber for lightning protection as per IS - 2307.

20.5.8.3 Distance between two earth pits shall be minimum 10M.

20.5.8.4 Equipment to be earthed.

Except for equipment provided with double insulation, all the non-current carrying metal parts of electrical installation are to be earthed properly. Specially body of table lamp, table fan, fan regulator and metallic parts of fluorescent fittings are to be earthed. In case of medium voltage installation, all metal conduits, trunking, cable sheaths, switchgear, distribution boards and all other parts made of metal shall be bonded together and connected by means of two separate and distinct connection with earth.

20.5.8.5 STRUCTURAL METAL WORK

Earthing of the metallic parts shall not be effected through any structural metal work which houses the installation. Where metallic parts of the installation are not required to be earthed and are liable to become alive should the insulation of conductors become defective, such metallic parts shall be separated by durable non-conducting material from any structural work.

20.5.8.6 SYSTEMS OF EARTHING Equipment and portions of installation shall be deemed to be earthed only if earthed in accordance with

the direct earthing system. In all cases, the relevant provisions of Rules 33 and 61 of the Indian Electricity Rules. 1956 shall be complied with.

20.5.8.7 General Rules Applying to All Systems of Earthing

METHOD OF EARTHING

(a) Connections to earthing conductors:

1) Main earthing conductor - It shall be taken from the earth connection at the main switchboard to an electrode to which the connection is to be made or to an earthing terminal provided by the supplier near service cutouts.

2) Sub-main earthing conductor- It shall run from the main switch board to distributionboard.

3) Circuit earthing conductor - It shall run from the exposed metal of equipment and shall be connected to any point on the main earthing conductor, sub-main earthing conductor, earth connection at it’s distribution board or to an earth leakage circuit breaker.

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..)20.5.8.7 (Contd…)

(b) Earthing of equipment (General)

Unless otherwise provided in (c) to (f) the exposed metal of equipment shall be earthed according to 1(a) (3) above.

(c) Conduits, cable sheathing and armouring -

They shall be earthed at the ends adjacent to switch boards at which they originate, or other wise at the commencement of the run by an earthing conductor connected to an earth clip, clamp or gland in effective electrical contact with the conduit or cable sheathing and armouring.

(d) Equipment mounted on metal frame work -

The exposed metal of equipment shall be deemed to be earthed if the metal framework on which it is mounted and is in effective electrical contact with which it is directly earthed.

(e) Exposed metal of equipment connected by flexible cord -

Where equipment is connected by flexible cord, all exposed metal parts of the equipment shall be earthed by means of an earthing conductor enclosed with the current carrying conductors within the flexible cords.

(f) Switches, accessories, lighting, fittings, etc. (use of screwed conduits for earthing)

Such fittings which rigidly secured effective electrical contact with a run of screwed conduit byscrewing, lock-nuts or clamps may be considered as a part of the run of conduit for earthingpurpose, provided that the run of conduit is earthed.

(g) Prohibited connections -

Sprinkler pipes or pipes conveying gas, water or flammable liquid conduit, metallic enclosuresof cables and conductors and lightning protection system shall not be used as a means ofearthing an installation or even as a link in an earthing system.

20.5.8.8 Metallic enclosures for wiring - continuity and resistance -

20.5.8.8.1 CONTINUITY

The metallic enclosures for wiring shall be mechanically and electrically continuous.

20.5.8.8.2 RESISTANCE

The electrical resistance of metallic enclosures for cables and conductors measured between earth connection at the main switch board and any other point on the completed installation shall be low enough to permit the passage of current necessary to operate fuse, circuit breaker or the earth leakage release of the circuit breaker protecting the circuit and shall not exceed 1 ohm.

Contd…../-


PARTICULAR SPECIFICATIONS (CONTD…..)20.5.8.9 EARTHING CONDUCTOR

Every earthing conductor shall be either stranded, flat strips or circular or rectangular bar. Protection against mechanical injury shall be provided where necessary. The earth conductor may be of high conductivity copper or aluminium or galvanised solid iron.

20.5.8.10 INSTALLATION OF EARTHING CONDUCTOR a) Position, fixing and protection of earth conductors : Earthing conductors shall be so placed and

connected that it shall not be accidentally damaged or cut. It shall be fixed over it’s entire length by clamps, clips, saddles, staples, clouts etc. which in no way will damage the conductor. Aerial earthing conductor shall be supported on suitable insulators and shall be clearly identified.

b) Buried earthing conductor - It shall be protected against mechanical damage.

c) Earth connections - Any connection between an earthing conductor and electrode or the metallic sheathing of under ground supply cables shall be accessible, shall in no case be in a damp situation and shall be suitably protected where likely to be exposed to mechanical damage.

d) Joints - Joints in main earthing conductors shall be made by soldering, brazing or welding for conductors of size up to 7/1.70mm; for larger main earthing conductors, mechanical clamping may be used. Joints in either earthing conductors shall be made by soldering or by mechanical clamping.

20.5.8.11 EARTH CLIPSPaint, enamel compound, corrosion and other non-conducting material shall be removed from the surface of the metal section to which earth clip is attached.

20.5.8.12 EARTH ELECTRODESa) Type:

Earth plate electrodes shall be provided and they shall not be less than 60cm x 60cm x 6.3mm in case of galvanised plate or 60cm x 60cm x12mm in case of galvanised cast iron or 60cm x 60cm x 3.15mm in case of copper as per clause 9.2 of IS 3043, unless otherwise indicated in Schedule ‘A’.

b) Installation: Electrodes shall as far as possible, be embedded below permanent moisture level. In addition, they shall be buried at a depth of not less than 1.5m unless otherwise indicated in Schedule ‘A’. Complete installation shall be as per IS-3043 and as per section 19 of MES SSR specification.

c) Earth plate shall be 60cm x 60cm x 6.3mm in case of galvanised plate or 60cm x 60cm x12mm in case of galvanised cast iron or 60cm x 60cm x 3.15mm in case of copper buried in specifically prepared earth pit so as to keep top of earth plate 1.5M below ground unless otherwise indicated in Schedule ‘A’ with 40 kgs each charcoal and salt with alternate layers of charcoal and salt with 19mm dia. GI pipe with funnel with a wire mesh for watering and brick masonry block, PCC cover complete as per para 9 of IS 3043 of 1987 with necessary length of double GI earth conductor bolted with lug to the plate and covered in 15mm dia. GI pipe 2.5M long complete connected to the nearest switch gear with end socket as per directions and duly tested by earth tester and recording results.

Contd…../-

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24-Particular Specificatins (268 - 295)

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