Construction of Office Building and Boundary wall Cane Development Society Ltd.- Afzalgarh District (Bijnor)

Building work

Excavation in foundation in ordinary soil (loam clay or sand) including lift upto 1.50 meter and lead upto 30 meter and including filling, watering and ramming of excavated earth into the trenches or into the space between the building and sides of foundation trenches or into the plinth and removal and disposal of sur-plus earth as directed by the Engineer incharge up to a distance of 30 meters from the foundation trenches.

Excavating, supplying and filling of local earth (including royalty) by mechanical transport upto a lead of 5km also including ramming and watering of the earth in layers not exceeding 20 cm in trenches, plinth, sides of foundation etc. complete.

Providing and laying in position ready mixed or site batched design mix cementconcrete for plain cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana/ Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering and finishing as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the minimum specified cement content, the contractor shall have discretion to eithe.r re-design the mix or bear the cost of extra cement. Concrete of M10 grade with minimum cement content of 220 kg /cum

Sand filling in plinth including supply of necessary quantity of sand from a distance not exceeding 8 kms. from the site of work and including watering, dressing etc rate to include cost of all materials labour T & P etc required for proper completion of work.

Construction of drain along with apron. 150X150MM

Providing and injecting chemical emulsion for pre constructional antitermite treatment and creating a chemical barrier under and alround the column pits wall trenches basement excavation top surface if plinth filling junction of wall and floor, along the the external perimeter of binding expansion joints, surrounding of pipes and conduits etc, complete. (plinth area of the building at ground floor only shall be measured as per I.S.6313 (PartII 1981) Alderine emulsifiable concentrate or any other approved material such as Heptrachlor or Chlordane will be used. The rate of application of chemical emulsion shall be as follows : (1) Treatment for masonary & foundation 5 liters per sqm. (2) Back fill in immediate contact with foundation 7.5 liters/sqm (3) Treatment of top surface of plinth filling 5 liters/sqm (4) Treatment junction of wall and the floor 7.5 liters /sqm (5) Treatment of soil along external perimeter of building 7.5 liters/sqm (6) Treatment of soil under apron along external perimter 5 liters/sqm. (As per manufacturer's standard dilution)

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge, for the following grades of concrete.: Note: Extra cement up to 10% of the minimum specified cement contentin design mix shall be payable separately. In case the cement content in design mix is more than 110% of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. All works upto plinth level Concrete of M25 grade with minimum cement content of 330 kg /cum R.C.C. work upto Plinth Lvl.

PLINTH BEAM

R.C.C.work in foundation / Footing

R.C.C.work in Column upto Plinth Lvl.

Providing and laying in position ready mixed or sitebatched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana /Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge, for the following grades of concrete.: Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement.. All works above plinth level upto floor V level Concrete of M25 grade with minimum cement content of 330 kg /cum

Lintel / Lintel Band

R.C.C. work in slab

R.C.C.work in Beams

R.C.C.work in Column

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)

Providing and laying damp-proof course 40 mm thick with cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 12.5 mm nominal size).

Painting on DPC or over roof slab one coat of air blown bitumen 60/70 or 80/100 grade @ one Kg/Sqm including cost of fuel wood other materials, labour T & P etc required for proper completion of work.

Brick work in super-structure above plinth level including necessary cutting and moulding of bricks as required and also including honey comb brick work thickness of wall not to be less than 1.5 brick thick. (1:4 cement & coarse sand).

Ground Floor

First Floor

Half brick masonry with (Class M-150 First Class Brick) in superstructure above plinth level up to floor V level. Cement mortar 1:4 (1 cement :4 coarse sand)

Ground Floor

First Floor

Providing and fixing M.S. Tubular frames for doors, windows, ventilators and cupboard with rectangular/ L-Type sections, made of 1.60 mm thick M.S. Sheet, joints mitred, welded and grinded finish, with profiles of required size, including fixing of necessary butt hinges and screws and applying a priming coat of approved steel primer. Fixing with carbon steel galvanised dash fastener of required dia and size (to be paid for separately)

Providing & fixing glass panes with putty and glazing clips in steel doors, windows, clerestory windows, all complete with :5.5 mm thick glass panes

Providing & fixing fly proof wire gauze to windows, clerestory windows & doors with M.S. Flat 15x3 mm and nuts & bolts complete. Stainless steel (grade 304) wire gauze of 0.5 mm dia wire and 1.4 mm aperture on both sides

TMT Fe-500 iron in plain work such as reinforced concrete or reinforced, brick work (when not included in over all rates ) wrought to required shape as necessary including bending for proper completion of the work and including supply of steel its wastage bend hooks and authorised over lapping shall be measured upto floor two level.

15 mm plinth plaster (1 cement :4 coarse sand) F.M.-2.25

12mm cement plaster in single coat on fair side of single or half brick wall for exterior plastering up to floor two level including internal rounded angles chamfers, and/or rounded angles not exceeding 80mm in girth and finished even and smooth no extra for mixing any additive. (1)1 cement : 6 coarse sand. F.M.-2.25

Ground Floor

First Floor

15 mm cement plaster in single coat on rough side of single or half brick wall for interior plastering up to floor two level including internal rounded angles not exceeding 80 mm in girth and finshed even and smooth. (1) 1 cement : 6 coarse sand.

Ground Floor

First Floor

Making grooves 10 to12mm wide x 8mm deep in plaster of the wal or in ceilng verticalLy or horizonta ly as required

Cement concrete flooring 1:2:4 (1 cement :2 coarse sand :4 graded stone aggregate 12-20mm nominal size laid in one layer neat cement (40 mm thick floor).

Kota stone slab flooring over 20 mm (average) thick base laid over and jointed with grey cement slurry mixed with pigment to match the shade of the slab, including rubbing and polishing complete with base of cement mortar 1 : 4 (1 cement : 4 coarse sand) :25 mm thick

Providing and laying vitrified floor tiles in different sizes (thickness to be specified by the manufacturer) with water absorption less than 0.08% and conforming to IS : 15622, of approved make, in all colours and shades, laid on 20mm thick cement mortar 1:4 (1 cement : 4 coarse sand), including grouting the joints with white cement and matching pigments etc., complete. Size of Tile 600x600 mm.

Providing and laying vitrified floor tiles in different sizes (thickness to be specified by the manufacturer) with water absorption less than 0.08% and conforming to IS : 15622, of approved make, in all colours and shades, laid on 15mm thick cement mortar 1:3 (1 cement : 3 coarse sand), including grouting the joints with white cement and matching pigments etc., complete. Size of Tile 600x600 mm.

Supply and fixing 6mm thick china white glazed tiles in flooring or in skirting or dado laid with 1:3 cement and approved coarse sand mortar finished with white cement slurry jointing and polishing complete including supply of all materials, labour and tool sand plants etc.

Finishing walls with Premium Acrylic Smooth exterior paint with Silicone additives of required shade New work (Two or more coats applied @ 1.43 ltr/ 10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/ 10 sqm)

Distempering (Two coat) with oil bound distemper of approved brand and manufacture & of required shade on undecorated wall surface to give an even shade over & including a priming coat with cement primer of approved brand & manufacture such as Berger,J&N, Shalimar, Asian paints after thoroughly brushing the surface free from mortar droppings & other foreign matters & also including preparing the surface even with plaster of paris or approved synthetic material & sand papered smooth including cost ofall materials. (For Internal wall surface)

Providing and applying white cement based putty of average thickness 1 mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete.

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade : Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture

Providing & laying of light cinder filling under floor of toilets & other sunken roofs.

Providing and applying integral crystalline slurry of hydrophilic in nature for waterproofing treatment to the RCC structures like retaining walls of the basement, water tanks, roof slabs, podiums, reservior, sewage & water treatment plant, tunnels / subway and bridge deck etc., prepared by mixing in the ratio of 5 : 2 (5 parts integral crystalline slurry : 2 parts water) for vertical surfaces and 3 : 1 (3 parts integral crystalline slurry : 1 part water) for horizontal surfaces and applying the same from negative (internal) side with the help of synthetic fiber brush. The material shall meet the requirements as specified in ACI-212-3R-2010 i.e by reducing permeability of concrete by more than 90% compared with control concrete as per DIN 1048 and resistant to 16 bar hydrostatic pressure on negative side. The crystalline slurry shall be capable of self-healing of cracks up to a width of 0.50 mm. The work shall be carried out all complete as per specification and the direction of the engineer-in-charge. The product performance shall carry guarantee for 10 years against any leakage

For vertical surface two coats @ 0.70 kg per sqm per coat

For horizontal surface one coat @1.10 kg per sqm.

Providing and laying integral cement based water proofing treatment including preparation of surface as required for treatment of roofs, balconies, terraces etc consisting of following operations: a) Applying a slurry coat of neat cement using 2.75 kg/sqm of cement admixed with water proofing compound conforming to IS. 2645 and approved by Engineer-in-charge over the RCC slab including adjoining walls upto 300 mm height including cleaning the surface before treatment. b) Laying brick bats with mortar using broken bricks/brick bats 25 mm to 115 mm size with 50% of cement mortar 1:5 (1 cement : 5 coarse sand) admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge over 20 mm thick layer of cement mortar of mix 1:5 (1 cement :5 coarse sand ) admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge to required slope and treating similarly the adjoining walls upto 300 mm height including rounding of junctions of walls and slabs c) After two days of proper curing applying a second coat of cement slurry using 2.75 kg/ sqm of cement admixed jointless cement mortar of mix 1:4 (1 cement :4 coarse sand) admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge including laying glass fibre cloth of approved quality in top layer of plaster and finally finishing the surface with trowel with neat cement slurry and making pattern of 300x300 mm square 3 mm deep. e) The whole terrace so finished shall be flooded with water for a minimum period of two weeks for curing and for final test. All above operations to be done in order and as directed and specified by the Engineerin- Charge : With average thickness of 120 mm and minimum thickness at khurra as 65 mm. ballast cement and coarse sand masonry coba with top finished plaster mixed with acetic water proofing compound @ 2% by weight & including S/o all material, labour T & P etc complete for proper completion of work.

Fixing of Door, windows/ventilators chaukhats in position.

Providing and fixing 150 mm bright finished floor stainless steel door stopper with rubber cushion, necessary brass screws etc. to suit shutter thickness complete.

Providing & fixing Stainless steel sliding door bolts ISI marked anodised (anodic coating not less than grade AC 10 as per IS : 1868) transparent or dyed to required colour or shade with nuts and screws etc complete. (a) 250mm x 16mm .

Providing and fixing stainless steel towerbolts (barrel type) with necessary screws etc. complete (a) 250 mm x 10mm

Providing and fixing stainless steel handles with screws etc. complete (a) 125 mm

Supply & fixing of flush doors commercial quality conforming to I.S. 2202 Part 1 (1983) including fixing and adjustment of hinges bolts locks handles springs fitting with necessary screws to be supplied departmentally. (a) 35mm thick

(a) Single leaf

(b) Extra for double leaf doors

both side laminated

Extra for providing lipping with 2nd class eak wood battens 25 mm minimum depth on all edges of flush door shutters (over all area of door shutter to be measured).

Providing and fixing stainless steel ( Grade 304) railing made of Hollow tubes, channels, plates etc., including welding, grinding, buffing, polishing and making curvature (wherever required) and fitting the same with necessary stainless steel nuts and bolts complete, i/c fixing the railing with necessary accessories & stainless steel dash fasteners , stainless steel bolts etc., of required size, on the top of the floor or the side of waist slab with suitable arrangement as per approval of Engineer-in-charge, (for payment purpose only weight of stainless steel members shall be considered excluding fixing accessories such as nuts, bolts, fasteners etc.).

Providing and fixing aluminium work for doors, windows, ventilators and partitions with extruded built up standard tubular sections/ appropriate Z sections and other sections of approved make conforming to IS: 733 and IS: 1285, fixing with dash fasteners of required dia and size, including necessary filling up the gaps at junctions, i.e. at top, bottom and sides with required EPDM rubber/ neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, Aluminium snap beading for glazing / panelling, C.P. brass / stainless steel screws, all complete as per architectural drawings and the directions of Engineer-in-charge. (Glazing, paneling and dash fasteners to be paid for separately) : For fixed portion Anodised aluminium (anodised transparent or dyed to required shade according to IS: 1868, Minimum anodic coating of grade AC 15)

Providing and supplying aluminium extruded tubular and other aluminium sections as per the architectural drawings and approved shop drawings , the aluminium quality as per grade 6063 T5 or T6 as per BS 1474,including super durable powder coating of 60-80 microns conforming to AAMA 2604 of required colour and shade as approved by the Engineer-in-Charge. ( The item includes cost of material such as cleats, sleeves, screws etc. necessary for fabrication of extruded aluminium frame work. Nothing extra shall be paid on this account). The weight of aluminium extruded section shall be taken for purpose of payment

Designing, fabricating, testing, protection, installing and fixing in position semi (grid) unitized system of structural glazing (with open joints) for linear as well as curvilinear portions of the building for all heights and all levels, including: a) Structural analysis & design and preparation of shop drawings for thespecified design loads conforming to IS 875 part III (the system must passed the proof test at 1.5 times design wind pressure without any failure), including functional design of the aluminum sections for fixing glazing panels of various thicknesses, aluminium cleats, sleeves and splice plates etc. gaskets, screws, toggles, nuts, bolts, clamps etc., 1. Performance Laboratory Test for Air Leakage Test (-50pa to - 300pa) & (+50pa to +300pa) as per ASTM E-283-04 testing method for a range o testing limit 1 to 200 mVhr 2. Static Water Penetration Test. (50pa to 1500pa) as per ASTME- 331-09 testing method for a range up to 2000 ml. 3. Dynamic Water Penetration (50pa to 1500pa) as per AAMA 501.01- 05 testing method for a range upto 2000 ml 4. Structural Performance Deflection and deformation by static air pressure test (1.5 times design wind pressure without any failure) as per ASTME-330-10 testing method for a range upto 50 mm 5. Seismic Movement Test (upto 30 mm) as per AAMA 501.4-09 testing method for Qualitative test, Tests to be conducted on site. 6. Onsite Test for Water Leakage for a pressure range 50 kpa to 240 kpa (35psi) upto 2000 ml

Centering and shuttering including strutting, propping etc. and removal of form for all heights :

Foundations, footings, bases of columns, etc. for mass concrete.

Columns,Pillars, Piers, Abutments, Posts and Struts.

Lintels, beams, plinth beams, girders, bressumers and cantilevers.

Suspended floors, roofs, landings, balconies and access platform.

[M.S.GATE] (3.50 M. )

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, for all lift, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:4:8 (1 Cement : 4 coarse sand (zone-lll) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources)

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level : 1:1.5:3 (1 cement : 1.5 coarse sand (zone-lll) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

Reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. above plinth level up to floor five level, excluding cost of centering, shuttering, finishing and reinforcement : 1:1.5:3 (1 cement : 1.5 coarse sand(zone-lll) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

Centering,shuttering inluding strutting,proping etc. & removal of form for.

Foundations, footings, bases of columns, etc. for mass concrete.

Lintels, beams, plinth beams, girders, bressumers and cantilevers.

Columns, Pillars, Piers, Abutments, Posts and Struts.

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in: Cement mortar 1:6 (1 cement : 6 coarse sand)

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. Thermo- Mechanically Treated bars of grade Fe-500D or more.

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

12 mm cement plaster of mix : 1:6 (1 cement: 6 coarse sand)

Finishing walls with water proofing cement paint of required shade : New work (Two or more coats applied @ 3.84 kg/10 sqm)

Finishing with Deluxe Multi surface paint system for interiors and exteriors using Primer as per manufacturers specifications : Painting Steel work with Deluxe Multi Surface Paint to give an even shade. Two or more coat applied @ 0.90 ltr/10 sqm over an under coat of primer applied @ 0.80 ltr/10 sqm of approved brand and manufacture

TUBE WELL BORING WITH ELECTRIC PUMP (120 RM)

Boring/drilling bore well of required dia for casing/ strainer pipe, by suitable method prescribed in IS: 2800 (part I), including collecting samples from different strata, preparing and submitting strata chart/ bore log, including hire & running charges of all equipments, tools, plants & machineries required for the job, all complete as per direction of Engineer-in-charge. Upto 90 metre depth below ground level.

Supplying, assembling, lowering and fixing in vertical position in bore well,unplasticized PVC medium well casing (CM) pipe of required dia,conforming to IS: 12818, including required hire and labour charges, fittings& accessories etc. all complete, for all depths, as per direction of Engineer-in-charge. 150 mm nominal size dia

Supplying, assembling, lowering and fixing in vertical position in bore wellunplasticized PVC medium well screen (RMS) pipes with ribs, conformingto IS: 12818, including hire & labour charges, fittings & accessories etc.all complete, for all depths, as per direction of Engineer-in-charge. 150 mm nominal size dia

Supplying, filling, spreading & leveling coarse sand of size range 1.5 mmto 2 mm in recharge pit, in required thickness over gravel layer, for all leads& lifts, all complete as per direction of Engineer -in-charge.

Development of tube well in accordance with IS : 2800 (part I) and IS:11189, to establish maximum rate of usable water yield without sandcontent (beyond permissible limit), with required capacity air compressor,running the compressor for required time till well is fully developed,measuring yield of well by “V” notch method or any other approved method,measuring static level & draw down etc. by step draw down method,collecting water samples & getting tested in approved laboratory, i/cdisinfection of tubewell, all complete, including hire & labour charges ofair compressor, tools & accessories etc., all as per requirement anddirection of Engineer-in-charge.

Providing and fixing M.S. clamp of required dia to the top of casing/housingpipe of tubewell as per IS: 2800 (part I), including necessary bolts & nuts f required size complete. 200 mm nominal size dia

Providing and fixing Bail plug /Bottam plug of required dia to the bottam of pipe assembly of tubewell as per IS:2800 (PART-1) 200 mm nominal size dia

Providing and fixing C.I. sluice valve . 200 mm nominal bore. Class I

Providing and lowering G.I. pipes complete with G.I. fittings including trenchingand refilling etc. 50 mm dia nominal bore (Column pipe)

Supply of tubewell motar pump with control panel, support wire etc. complete 5.0 H.P. (KSB/EQ.)

Supply and fixing of nylon jali around the slotted pipescomplete as required. Up to 10 meter

Supply and laying of aluminium conductor PVC insulated armoured served sheathed cables 1100 Volts grade at a depth of 750 mm below ground level over a cushion of 75 mm. thick sand all around and protected with burnt bricks on sides and on top. On surface the cable run shall be fixed on M.S. clamps etc. of suitable size or as directed by the Engineer-Incharge ,complete in all respect. The armouring of the cable shall be properly connected with the earth conductor by clamps etc. 35 sq. mm 3-1/2 core

SEPTIC TANK WORKS

Earth work in excavation over areas including disposal of excavated earth, lead upto 50m, disposed earth to be levelled and neatly dressed.

In all kind of soil upto 1.5m depth

In all kind of soil upto 1.5m to 3.0m. depth

In all kind of soil upto 3.0m to 4.5m. depth

Providing and laying of cement concrete in base excluding the cost of centring and shuttering by 1:2:4 (1 cement : 2 coarse sand : 4 gradded stone aggregae 20mm nominal size)

Brick work with brick of class designation 150 in foundation and plinth in cement mortar (1 cement : 4 coarse sand)

Reinforcement cement concrete work in RCC culvert slab with 1:1.5:3 (1 cement : 1.5 coarse sand and 3 gradded stone aggregate of 20 mm nominal size) including centering and shuttering and reinforcement.

TMT Fe-500 in plain work such as reinforced concrete or reinforced, brick work (when not included in over all rates ) wrought to required shape as necessary including bending for proper completion of the work and including supply of steel its wastage bend hooks and authorised over lapping shall be measured upto floor two level.

15mm cement plaster on rough side of mix 1:4 (1 cement : 4 coarse sand)

Providing M.S. foot rest including fixing with 20x20x10 cm. cement concrete block 1:3:6 (1 cement : 3 coarse sand : 6 gradded aggregate of nominal size 20mm ) as per standard design with 20x20mm sq bars.

Providing and fixing C.I. tee at the inlet and outlet of septic tank.

Providing & fixing 75mm dia vent pipes.

Providing & fixing of 75mm dia cast iron terminal guard.

Providing and fixing in position precast RCC manhole cover and frame of required shape and approved quality.

M.D. -10- Circular shape 500mm internal diameter

M.D. -2.5- Circular shape 450mm internal diameter

Making soak pit 2.5 m diameter 3.0 metre deep with 45 x 45 cm dry brick honey comb shaft with bricks of class designation 75 and S.W. drain pipe 100 mm diameter, 1.8m long complete as per standard design. With F.P.S. bricks

Centering and shuttering including strutting, propping etc. and removal.

COST OF INTERNAL PLUMBING WORK

COST OF ELECTRIFICATION WORK

SITE DEVELOPMENT

COST OF FURNITURE WORKS

COST OF C.C. ROAD

BILL OF QUANTITY [BOUNDRY WALL]