Waterproofing Works

← All sections of BMC USOR 2023 (Buildings)

Code	Description	Unit	Rate
R3-CS-WP-1	Providing and laying integral cement based treatment for water proofing on horizontal surface at all depth below ground level for under ground structures as directed by Engineer-in-Charge and consisting of : i) Ist layer of 22 mm to 25 mm thick approved and specified rough stone slab over a 25 mm thick base of cement mortar 1:3 (1 cement : 3 coarse sand) mixed with water proofing compound conforming to IS:2645 in the recommended proportion over the leveling course (leveling course to be paid separately). Joints sealed and grouted with cement slurry mixed with water proofing compound. ii) 2nd layer of 25 mm thick cement mortar 1:3 (1 cement: 3 coarse sand) mixed with water proofing compound in recommended proportions. iii) Finishing top with stone aggregate of 10 mm to 12 mm nominal size spreading @ 8 cudm/sqm thoroughly embedded in the 2nd layer. -Using rough kota stone of size 550 mm x 850 mm	sqm	₹ 1,480
R3-CS-WP-2	Providing and laying integral cement based treatment for water proofing on the vertical surface by fixing specified stone slab 22 mm to 25 mm thick with cement slurry mixed with water proofing compound conforming to IS:2645 in recommended proportions with a gap of 20 mm (minimum) between stone slabs and the receiving surfaces and filling the gaps with neat cement slurry mixed with water proofing compound and finishing the exterior of stone slab with cement mortar 1:3 (1 cement : 3 coarse sand) 20 mm thick with neat cement punning mixed with water proofing compound in recommended proportion complete at all levels and as directed by Engineer-in-charge : -Using rough Kota stone of size 550 mm x 850 mm	sqm	₹ 1,893
R3-CS-WP-3	Providing and laying water proofing treatment to vertical and horizontal surfaces of depressed portions of W.C., kitchen and the like consisting of : (i) Ist course of applying cement slurry @ 4.4 kg/sqm mixed with water proofing compound conforming to IS 2645 in recommended proportions including rounding off junction of vertical and horizontal surface. (ii) IInd course of 20 mm cement plaster 1:3 (1 cement : 3 coarse sand) mixed with water proofing compound in recommended proportion including rounding off junction of vertical and horizontal surface. (iii) IIIrd course of applying blown or residual bitumen applied hot at 1.7 kg. per sqm of area. (iv) IVth course of 400 micron thick PVC sheet. (Overlaps at joints of PVC sheet should be 100 mm wide and pasted to each other with bitumen @ 1.7 kg/sqm).	sqm	₹ 1,076
R3-CS-WP-4	Providing and Placing in position suitable PVC water stops conforming to IS:12200 for construction/ expansion joints between two RCC members and fixed to the reinforcement with binding wire before
R3-CS-WP-4-a	Serrated with central bulb (225 mm wide, 8-11 mm thick)	rmt	₹ 561
R3-CS-WP-4-b	Dumb bell with central bulb (180 mm wide, 8 mm thick)	rmt	₹ 949
R3-CS-WP-4-c	Kickers (320 mm wide, 5 mm thick)	rmt	₹ 883
R3-CS-WP-5	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 with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge. d) Finishing the surface with 20 mm thick 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 Engineer-in-Charge : With average thickness of 120 mm and minimum,thickness at khurra	sqm	₹ 1,704
R3-CS-WP-6	Providing and laying four courses water proofing treatment with bitumen felt over roofs consisting of first and third courses of blown bitumen 85/25 or 90/15 conforming to IS : 702 applied hot @ 1.45 Kg per square metre of area for each course, second course of roofing felt type 3 grade-I (hessian based self finished bitumen felt) and fourth and final course of stone grit 6 mm and down size or peasized gravel spread at 6 cubic diameter per square metre including preparation of surface but excluding grading complete with Bitumen felt (hessian base) type 3 grade I conforming to IS : 1322	sqm	₹ 438
R3-CS-WP-7	Providing and laying six courses water proofing treatment with bitumen felt over roofs consisting of first, third and fifth course of blown bitumen 85/25 or 90/15 conforming to IS : 702 applied hot @ 1.45, 1.20 and 1.45 Kg per square metre of area respectively, second and fourth courses of roofing felt type 3 grade I conforming to IS : 1322 (Hessian based self finished bitumen felt) conforming to IS : 1322 and sixth and final course of stone grit 6 mm and down size or pea sized gravel spread at 6 cubic dm per sqm including preparation of surface but excluding grading, complete.	sqm	₹ 676
R3-CS-WP-8	Providing and laying six courses water proofing treatment with bitumen felt over roofs consisting of first, third and fifth courses of blown or / and residual bitumen applied hot at 1.45, 1.20 and 1.70 kg per square metre of area respectively, second and fourth courses of roofing felt type 2 grade I (fibre base self finished bitumen felt) six and final courses of stone grit 6 mm and down size or pea sized gravel spread at 6cu.dm per sqm including preparation of surface, excluding grading, compete.	sqm	₹ 772
R3-CS-WP-9	Providing and laying six courses water proofing treatment with bitumen felt over roofs consisting of first, third and fifth courses of blow or/ and residual bitumen applied hot at 1.45, 1.20 and 1.70 kg per square metre of area respectively, second and fourth courses of roofing felt type 2 grade II (glass fibre base self finished bitumen felt) and sixth and final course of stone grit 6 mm and down size or pea sized gravel spread at 6 cubic dm per sqm including preparation of surface but excluding grading, complete	sqm	₹ 797
R3-CS-WP-10	Supplying and applying bituminous solution primer conforming to IS 3384 on roof and or wall surface at 0.24 litre per sqm.	sqm	₹ 76
R3-CS-WP-11	Grading roof and toilet for water proofing treatment above slab with
R3-CS-WP-11-a	Cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)	cum	₹ 6,315
R3-CS-WP-11-b	Cement mortar 1:3 (1 cement : 3 coarse sand)	cum	₹ 13,931
R3-CS-WP-11-c	Cement mortar 1:4 (1cement : 4 coarse sand)	cum	₹ 12,661
R3-CS-WP-12	Providing and laying in situ seven course water proofing treatment with APP (Atactic poly-propylene) modified Polymeric memberane over roof consisting of first coat of bitumen primer @ 0.40 Kg per sqm, 2nd, 4th & 6th courses of bonding material @ 1.20 Kg/sqm, which shall consist of blown type bitumen of grade 85/25 conforming to IS : 702, 3rd and 5th layers of roofing membrane APP modified Polymeric membrane 1.5 mm thick of 2.25 Kg/sqm weight consisting of five layers prefabricated with centre core as 20 micron HMHDPE film sandwiched on both sides with polymeric mix and the polymeric mix is protected on both side with 20 micron HMHDPE film. 7th, the top most layer shall be finished with brick bats of class designation 10 grouted with cement mortar 1:3 (1cement : 3 fine sand) mixed with 2% integral water proofing compound by weight of cement over a 12 mm layer of cement mortar 1:3 (1 cement : 3 fine sand) and finished neat (item of laying brick tiles shall be paid for separately).	sqm	₹ 682
R3-CS-WP-13	Providing and laying in situ five course water proofing treatment with APP (Atactic Polypropylene) modified Polymeric memberane over roof consisting of first coat of bitumen primer @ 0.40Kg per sqm, 2nd & 4th courses of bonding material @ 1.20 kg/sqm, which shall consist of blown type bitumen of grade 85/25 conforming to IS : 702, 3rd layer of roofing membrane APP modified Polymeric membrane 2.0 mm thick of 3.00 Kg/sqm weight consisting of five layers prefabricated with centre core as 100 micron HMHDPE film sandwiched on both sides with polymeric mix and the polymeric mix is protected on both side with 20 micron HMHDPE film. 5th, the top most layer shall be finished with brick tiles of class designation 10 grouted with cement mortar 1:3 (1 cement : 3 fine sand) mixed with 2% integral water proofing compound by weight of cement over a 12 mm layer of cement mortar 1:3 (1 cement : 3 fine sand) and finished neat ( item of laying brick bats shall be paid for separately).	sqm	₹ 481
R3-CS-WP-14	Providing and laying in situ seven course water proofing treatment with APP (Atactic Polypropylene) modified Polymeric memberane over roof consisting of first coat of bitumen primer @ 0.40 Kg per sqm, 2nd, 4th & 6th courses of bonding material @ 1.20 kg/sqm, which shall consist of blown type bitumen of grade 85/25 conforming to IS : 702, 3rd and 5th layers of roofing membrane APP modified Polymeric membrane 2.0 mm thick of 3.00 Kg/sqm weight consisting of five layers prefabricated with centre core as 100 micron HMHDPE film sandwiched on both sides with polymeric mix and the polymeric mix is protected on both side with 20 micron HMHDPE film. 7th, the top most layer shall be finished with brick bats of class designation 10 grouted with cement mortar 1:3 (1 cement : 3 fine sand) mixed with 2% integral water proofing compound by weight of cement over a 12 mm layer of cement mortar 1:3 ( 1 cement : 3 fine sand) and finished neat (item of laying brick tiles shall be paid for separately).	sqm	₹ 722
R3-CS-WP-15	Providing and fixing APP (Atactic Polypropylene Polymer) modified prefabricated five layer 2 mm thick water proofing membrance, black finished reinforced with glass fibre matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrance manufacture of density at 25°C, 0.87 - 0.89 kg/ litre and viscocity 70 - 160 cps. Over the primer coat the layer of membrane shall be laid using Butane torch and sealing all joints etc., and preparing the surface complete. The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 350/300 N/ 5 cm. Tear strength in longitudinal and transverse direction as 60/80N. Softening point of membrane not less than 150°C. Cold flexibility shall be upto -2°C when tested in accordance with ASTM, D - 5147. The laying of membrane shall be got done through the authorised applicator of the manufacture of membrane. 22.18.1 2mm (for corrugated roof sheets)	sqm	₹ 391
R3-CS-WP-16	Providing and laying APP (Atactic Polypropylene Polymer) modified prefabricated five layer, 3 mm thick water proofing membrane, black finished reinforced with glass fibre matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrane manufactured of density at 25°C, 0.87 - 0.89 kg/litre and viscocity 70 - 160 cps. Over the primer coat the layer of membrane shall be laid using butane torch and sealing all joints etc., and preparing the surface complete. The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 350/300 N/5 cm. Tear strength in longitudinal and transverse direction as 60/80N. Softening point of membrane not less than 150°C. Cold flexibility shall be upto - 2°C when tested in accordance with ASTM, D - 5147. The laying of membrane shall be got done through the authorised applicator of the manufacturer of membrane :	sqm	₹ 443
R3-CS-WP-17	Providing and laying APP (Atactic Polypropylene Polymer) modified prefabricated five layer 3 mm thick water proofing membrane, black finished reinforced with non-woven polyester matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrane manufacture of density at 25°C, 0.87-0.89 kg/ litre and viscocity 70-160 cps. Over the primer coat the layer of membrane shall be laid using Butane Torch and sealing all joints etc, and preparing the surface complete. The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 650/ 450N/5cm. Tear strength in longitudinal and transverse direction as 300/250N. Softening point of membrane not less than 150°C. Cold flexibility shall be upto -2°C when tested in accordance with ASTM, D - 5147. The laying of membrane shall be got done through the authorised applicator of the manufacturer of membrane 22.20.1 3 mm thick	sqm	₹ 459
R3-CS-WP-18	Extra for covering top of membrane with Geotextile, 120 gsm non woven, 100% polyester of thickness 1 to 1.25 mm bonded to the membrane with intermittent touch by heating the membrane by Butane Torch as per manufactures recommendation	sqm	₹ 115
R3-CS-WP-19	Providing and laying damp-proof course 40mm thick with cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 12.5mm nominal size) including water proofing material in cement concrete work in doses by weight of cement as per manufacturer’s specification.	sqm	₹ 366
R3-CS-WP-20	Providing and laying damp-proof course 50mm thick with cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 12.5mm nominal size) including water proofing material in cement concrete work in doses by weight of cement as per manufacturer’s specification.	sqm	₹ 441
R3-CS-WP-21	Applying a coat of residual petroleum bitumen of grade of VG-10 of approved quality using 1.7kg per square metre on damp proof course after cleaning the surface with brushes and finally with a piece of cloth lightly soaked in kerosene oil.	sqm	₹ 159
R3-CS-WP-22	Providing and filling AAC bats (of size 40-60 mm) with cement mortar mixed in the ratio 1:3:6 (1 cement : 3 coarse sand : 6 block bats) including mixing of approved water proofing compound in recommended proportion for W.C., bath and kitchen. The laid brick bat mix shall be well rammed and compacted as required. Further surfaces shall be screeded with cement concrete mix 1:1.5:3 (1 cement : 1.5 coarse sand : 3 stone grit of size 6 mm and below by volume) admixed with approved integral water proofing compound in recommended proportion, laid to an average thickness of 25mm and finished smooth or ready to receive finish material as specified. Care shall be taken prior to filling all pipes passing through sunk portion such that the pipes are pressure tested by maintaining pressure for 24 hours and junctions of pipes passing through walls, slabs are well grouted and sealed. This shall be tested by ponding water for required depth and maintaining for 7 days.(Rate includes cost of brick bats, cement mortar, top screed, labour charges for working at all levels, leads and heights). For payment the area of sunken slab and the depth of filling including the thickness of screed shall be measured.	cum	₹ 16,963
R3-CS-WP-23	Waterproofing the terrace slabs with average 100 mm thick, brick bats laid in cement mortar bed 1:4 filled with mortar 1:4 of total thickness 100 mm, laid to slope (1:100) with vata 15 cm, at the junction of walls and IPS flooring (1:2:3) 40 mm thick with admixture, of approved water proofing compound, as per manufacturers specification laid after grouting the slab, finishing curing etc. complete as directed and specified. (Horizontal measurement clear between walls will be paid for).	sqm	₹ 1,158
R3-CS-WP-24	Do with broken China mosaic flooring instead of IPS set in cement mortar (1:4) 40 mm thick	sqm	₹ 1,418
R3-CS-WP-25	Providing and installing crystalline waterproofing treatment to inside surfaces of the water retaining structures a) Treatment shall consist of preparation of surfaces including ‘V’ grooves at junctions and joints, pressure grouting the same and curing for specified period. b) Applying two coats of approved crystalline waterproofing compound at specified intervals as recommended by manufacturer and as directed by Engineer-in charge and allowed to cure. c) Extra for Plastering of walls and finishing smooth with 15 mm thick cement mortar 1:4 (1 cement : 4 fine sand) admixed with approved waterproofing compound in recommended proportions. d) Extra for Laying of 30 mm average thick cement concrete of mix 1:2:4 (1 cement : 2 coarse sand : 4 coarse aggregate of 12.5mm nominal size) admixed with approved waterproofing compound in recommended proportions, on floors to required gradient, including rounding of corners / junctions with walls and floors etc., and finished smooth and cured. Tank shall be tested by filling with water for required depth and maintaining it for 72 hrs. for checking the leakages. The rate includes giving 10 year guarantee for waterproofing on a Rs.100/- stamp paper in approved proforma.	sqm	₹ 2,576
R3-CS-WP-26	HORIZONTAL SURFACES : Providing & applying membrane waterproofing treatment to podium / landscape area consisting of following operations: a) Cementious based chemical waterproofing coating (two or more coats) of approved make, including preparation of surfaces to receive chemicals, treatment and curing. b) Light weight concrete of density 450 kg/cum (for non traffic area) and of minimum 75 mm thickness at draining point and rest area sloped to drain water as detailed in drawing. c) Slope shall be developed with required density mix to suite the type of traffic expected. d) 3.0 mm thick APP Polymer modified polyester black finished reinforced with glass fibre matt sheet, laid over a coat of bitumen primer having density 0.87-0.89 kg/litre and Viscosity 70- 160cps at 25 degrees C, @ 0.4 litre / sqm. Over the primer coat the layer of membrane shall be laid using Butane Torch and sealing all joints etc., and preparing the surface to receive top protective coat, complete. e) Top protective layer comprising of 30 mm thick water proof screed in 1:4 cement mortar mix (1 Cement :4 Coarse sand) admixed with approved water proofing compound as specified by the manufacturer or as directed by E-I-C, spread over entire terrace area and finished to receive Architectural finish. f) The vertical vertical surfaces shall be plastered with 12 mm thick cement mortar 1:4 (1 Cement :4 Fine sand).	sqm	₹ 2,340
R3-CS-WP-27-a	HORIZONTAL SURFACES : Waterproofing the terrace slab and staircase roof slab with average 100 mm thick concrete of broken brick bats and cement mortar (1:4) in the proportion of 2 parts of brick bats and 1 part of mortar, laid in proper slope (1:100) well rammed, watered and consolidated with vata 15 cm at junction of walls and Indian patent stone flooring 1:2:3 (12.5 mm chips) 40 mm thick and with admixture of approved water proofing compound as per manufacturers specifications laid after grouting the surface of brickbat coba with neat cement slurry in alternate suitable squares to required slope as directed including filling in joints with bitumen and cleaning the slab top of all dust and loose material; tamping, finishing and curing complete as directed and specified. (Horizontal measurements clear between walls will be paid for). NOTE: (1) Expansion joints to be provided for the full depth. (2) Expansion joints to be so provided that the area of each bay does not exceed 10 Sqm	sqm	₹ 1,635
R3-CS-WP-27-b	HORIZONTAL SURFACES : Do -- 100 mm thick I.P.S. flooring without brick bat concrete.	sqm	₹ 1,134
R3-CS-WP-28-a	HORIZONTAL SURFACES : Waterproofing the slab of terrace, bathrooms sanitary blocks etc. with a layer not less than 1.5 mm thick of heated bitumen 20/30 penetration applied in 2 or 3 coats, after thoroughly brushing and cleaning the slab including painting the vertical portion of the side walls upto the level of the finished terrace or floor surface.	sqm	₹ 401
R3-CS-WP-28-b	HORIZONTAL SURFACES : Do -- with heated tar and pitch.	sqm	₹ 322
R3-CS-WP-29	HORIZONTAL SURFACES : Providing waterproofing treatment to terrace slab and laying flooring of broken marble mosaic tiles of plain finish of required size laid on 38mm to 50 mm thick 1:2 Cement Mortar bedding after grouting with neat cement 100 mm thick (average) bedding of concrete made of 2 parts of broken brick bats to 1 part of cement mortar laid to proper gradient 1:100 and 150 mm half round vata in 1:2:4 c.c. with necessary plaster in 1:3 C.M. at the junction with walls and the required number of expansion joint as per the directions etc. complete. The rate also includes watering, tamping, curing and cleaning the top of all dust, loose materials, stains, and machine polished etc. complete as directed. (Horizontal measurements clear Note : The layer of 100 mm thick average brick bat coba shall be laid in required slopes in proportion of two parts of broken bricks bats and one part of cement mortar 1:5 on slab. Over the brick bat coba, 30 mm to 38 mm thick lime mortar in proporation of 1 part of lime to 2 parts of sand shall be laid as bedding for fixing broken marble mosaic	sqm	₹ 1,560
R3-CS-WP-30	HORIZONTAL SURFACES : Providing water proofing treatment to New terrace after cleaning the surface by giving „INJECTIONS‟ to the terrace slab wherever required with necessary water proofing compound and cement solution as per specifications so as to fill up all the inherent holes cavities, voids, honeycomb etc. making the whole structure consistent and homogeneous resistant to water leakage seepage, dampness and moisture etc. Brickbat waterproofing coba in 1:5 C.S. mortar as per specifications shall be laid over R.C.C.Slab with necessary gradient for easy flow of rain water. This treatment shall continue along the inner side of parapet of other adjoining wall upto height of about 30cm. in the shape of round vata. Finally the top surface shall be covered with joint less waterproofing plaster 1: 4 C.S. 12 mm to 15 mm in thickness as per specifications of specialized waterproofing Co. finished smooth with trowel in cement colour marked in 30 cm x 30 cm false squares. The average thickness of complete treatment shall be 100 mm. The surface shall be rendered hard and tough to withstand the weather, normal domestic use. The rate is inclusive of the cost of watering, tamping, curing and cleaning the top of all dust, loose materials, stains etc. complete as directed. Debris shall become contractor’s property. The finished terrace surface shall be ponded for a period of 10 days to test for any leakage without any extra cost. Clear horizontal measurement between walls will be paid for actual	sqm	₹ 1,435
R3-CS-WP-31	HORIZONTAL SURFACES : Extra for providing additional thickness of brickbats over 100 mm in 1:5 c.s. either due to location of rain water pipes or due to increase in the travel length of flow of rain water or brick bats required in the sunk portion of baths, W.C.s nahani etc. The rate includes for fixing brickbats in C.M., with waterproofing compound as per specification as directed.	cum	₹ 10,101
R3-CS-WP-32-a	HORIZONTAL SURFACES : Providing the waterproofing treatment as per item no CS-WP-30 but for existing terrace after removing the old brick bat coba, tiling work etc. completely so as to expose the R.C.C. slab surface and cleansing the same. The rate is inclusive of removing the debris from actual place of work to the ground and from there the same will have to be carted away immediately the debris will become contractors property and no extra payment will be made for removing and carting. [Injection treatment shall be given as per item no. CS-WP-45	sqm	₹ 1,496
R3-CS-WP-32-b	HORIZONTAL SURFACES : Providing waterproofing treatment as per Item No.CS-WP-32-a with Broken China mosaic flooring as per design.	sqm	₹ 1,764
R3-CS-WP-33	HORIZONTAL SURFACES : Providing waterproofing treatment from outside to basement lift-pits and other under ground structures during construction. The treatment shall be started after the P.C.C. bedding for the base slab or raft slab is laid. On the P.C.C. bedding a waterproofing layer based on cement with rough shahabad stones of 20 to 25 mm thick well pointed in the joints with 1:3 C.S. 40 mm thick for floors and 20 mm thick for sides with cement float and water proofing compound as per specifications shall be laid. Then the surface shall be superimposed by regular R.C.C. raft or base slab as per design. After completion of the raft / base slab and side walls the treatment of waterproofing layer shall be continued along the outer surface of the walls upto a height of 30 cm above the adjacent ground level. (The excavation of the side around the walls shall be filled with soft earth by the contractor ). The total thickness of the treatment shall be 65 mm to 75 mm for floors and 32 mm to 38 mm for walls. Note: (a) Where no space is available on the outer side of the walls, the following procedure shall be adopted :- Brick masonry walls of adequate strength shall be provided by the contractors at the outside level of the walls of basement. The treatment shall then be done as described above for flooring and on the inner face of the brick masonry upto a height of 30 cm above adjoining ground level. The surface shall then be superimposed by regular R.C.C.raft slab and walls. The thickness of the treatment for floor and walls shall be same as stated above. (b) As regards pile caps , footings, The treatment shall be done by providing plain cement concrete bedding in the bottom by the contractor. Over this, brick masonry of adequate thickness shall be provided by the contractor around pile caps, footings, columns and plinth beams upto the top level of the P.C.C. bedding of the main floor. The waterproofing treatment shall then be provided over the P.C.C. bedding of the floor and the inner faces of the brick masonry walls. The treatment shall be turned over the top of brick masonry wall and continued over the P.C.C. of the main basement floor. Other details shall remain as before. (c) The payment for brick masonry, concrete walls and their foundation constructed to receive the waterproofing treatment will be made separately under the respective items of the tender. (d) The payment for waterproofing treatment shall be on the basis of the actual area of the treatment.	sqm	₹ 1,601
R3-CS-WP-34	HORIZONTAL SURFACES : Providing water proofing treatment to existing RCC overhead tank, basements, lift-pits and other underground structures. The treatment shall be done by giving INJECTIONS wherever necessary with waterproofing compound and cement solution as per tenderer‟s specifications into the floor & walls upto the full height of structures. All inherent holes, cavities, voids & honeycomb shall be filled up to make the structure consistent, homogenous resistant to water breakages, seepage, dampness and moisture etc. The floor shall then be treated with waterproofing metal coba of 30 mm to 35 mm thick in 1:4 C.S. mortar and walls with first coat of waterproofing plaster as per tenderer‟s specifications. Finally both floor and walls shall be finished smooth with jointless waterproofing plaster 1:3 C.S. 12 mm to 15 mm thick with water proofing materials as per tenderer‟s specifications in cement or finished rough to receive tile pavement or dado. The thickness of the treatment shall not be less than 50 mm to 60 mm for floors and 25 mm for walls. (The actual area of the	sqm	₹ 1,609
R3-CS-WP-35	HORIZONTAL SURFACES : Extra over the rate for item No.CS-WP-34 for removing the old plaster and floor finishing completely so as to expose the original surface to receive the treatment including carting away debris etc. complete.	sqm	₹ 153
R3-CS-WP-36	HORIZONTAL SURFACES : Extra rate for removing brick bat coba more than (4") 100 mm thick including carting away the same and from the actual place of work to any other site and making the site clear as directed. The debris will become contractor's property.	cum	₹ 1,564
R3-CS-WP-37	HORIZONTAL SURFACES : Providing waterproofing treatment through specialized agencies as per their specifications to the flooring of water closets, bathrooms, kitchen, nahanies, washing places, sanitary blocks etc. by giving INJECTIONS with cement solution with water proofing compound into the floor slab so as to make it consistent, homogeneous and impervious against leakage, seepage etc. The sunk portion shall then be covered with brickbat waterproof coba in 1:5 c.s. of required thickness with necessary gradient for easy flow of water. Finally the floor shall be covered with joint less waterproof cement plaster in 1:3 c.s. 12 mm to 15 mm thick finished rough for receiving tiles. The average thickness of complete treatment shall not be less than 100 mm. The soil pan area will not be deducted. ( After completion of work leakage test shall be carried out after impounding the water for 7 days without any extra cost. The actual treated area will be measured and paid for).	sqm	₹ 619
R3-CS-WP-38-a	HORIZONTAL SURFACES : Providing waterproofing treatment through specialized agencies to the dado portion of the R.C.C. side walls upto 1.5 m height from floor area of water closets, bath-rooms, kitchens, washing places, sanitary blocks etc. by giving „INJECTIONS‟ treatment with waterproofing compound and cement solution. The walls will then be plastered with waterproof cement plaster in 1:4 c.s. 12 mm to 15 mm thk. Finally the walls shall be covered with jointless waterproof plaster in 1:3 c.s. 12 to 15 mm thick finished rough for receiving tiles. The average thickness of complete treatment shall not be less than 25 mm. (The actual treated area will be measured and paid for).	sqm	₹ 924
R3-CS-WP-38-b	HORIZONTAL SURFACES : Do- -Do- brickwall without injection treatment.	sqm	₹ 539
R3-CS-WP-39	HORIZONTAL SURFACES : Providing the waterproofing treatment as per item no.CS-WP-38 but to the flooring of existing water closets, bathrooms, kitchen, nahanies, washing places, sanitary blocks etc. after removing existing flooring and brickbat coba etc. (The soil pan area will not be deducted. After completion of work leakage test shall be carried out after impounding the water for 7 days without any extra cost. The actual area treated including soil pan area will be measured and paid for).	sqm	₹ 1,474
R3-CS-WP-40	HORIZONTAL SURFACES : Providing waterproofing treatment through specialized agencies as per item no. CS-WP-39 but to the dado portion of existing water closets, bathroom, kitchens, wash places, sanitary blocks etc. by removing existing plaster and tiles etc. (The actual area treated will be measured and paid for).Take rebate of Rs.100/- Sqm if existing wall is brickwall	sqm	₹ 1,077
R3-CS-WP-41	HORIZONTAL SURFACES : Providing Waterproofing treatment as per item No. CS-WP-40 to the brickwall of existing water Closets, bathroom, kitchens, washing places, sanitary blocks etc. by removing existing plaster and tiles etc.	sqm	₹ 2,101
R3-CS-WP-42	HORIZONTAL SURFACES : Providing waterproofing treatment to the side walls (brick masonry of rubble) of basement with single layer of rough Shahabad stone about 12 mm to 18 mm in thickness well pointed in the joints with cement paste and waterproof compound as per tender‟s specifications including grouting the portion behind the Shahabad tiles and finishing the surface of Shahabad tile with cement plaster medium smooth c.s. 1:3 about 10 to 12 mm. thickness. The total thickness of the treatment should be about 25 mm to 38 mm. (The actual area treated will be	sqm	₹ 1,365
R3-CS-WP-43	HORIZONTAL SURFACES : Providing waterproofing treatment to existing R.C.C. walls or columns of basement by giving „ INJECTIONS‟ wherever necessary with waterproofing compound and cement solution as per tender‟s specifications into the R.C.C. walls or columns upto 30 cm height above ground level structures after removing existing plaster / finish etc complete. All inherent holes, cavities, voids and honey combs shall be filled upto make the structure consistent, homogenous, resistant to water leakage, seepage dampness and moisture etc. The columns or walls shall then be treated with first coat of waterproof plaster in 1:3 C.S. plaster 12 to 15 mm thick as per tender‟s specifications. Finally the walls or columns shall be finished smooth with jointless waterproof plaster in 1:3 C.S. plaster medium smooth 12 to 15mm thick with waterproofing materials as per tender‟s specifications in cement colour. The thickness of the treatment shall not be less than 25 mm. (The actual area treated will be measured	sqm	₹ 2,934
R3-CS-WP-44	HORIZONTAL SURFACES : Water proofing treatment to the chajja after removing old plaster and roughening the surface and finishing the top surface with 20mm thk. 1:2 c.s. plaster with approved water proofing compounds and neat cement finish, the rate also includes for 1:3 c.s. facia of chajja to match the new surface(actual area treated will be paid).	sqm	₹ 394
R3-CS-WP-45	Providing waterproofing treatment to the existing terrace/top slab at any floor level (including slab portion beneath overhead water tank) by 1. Removing the existing top layer of the terrace/top slab upto the top of existing brick bat coba without causing any damage to any of the structural member and cleaning the same of any loose material etc. complete as directed. 2. Dividing the total slab area by marking grid at a spacing of 1.2m. c/c in either direction and form square panels of the size 1.2 m. x 1.2 m. and drilling the holes (by using machine) 37 mm. to 50 mm. dia upto required depth in the R.C.C. slab in staggered form at the junction of the above marked grid as specified and directed by an Engineer in charge. 3. Filling the holes only at bottom portion with 10 mm size metal, inserting the grouting nozzle in the drilled hole for grouting and making the hole watertight by filling the gap between nozzle and the hole with cement mortar 1:1 or any other suitable material as a sealant. 4. Injecting the cement grout admixed with waterproofing compound (one part of cement to 2 parts of water is recommended; initially richer mix which is possible but for further grouting leaner mix is required for filling smaller voids, mix should not be leaner than 1 cement:5 water) with required pressure (as per site conditions) by grout pump so as to seal all inherent holes, honey combs, cavities and voids and making the whole structures consistent and homogeneous solid mass resistant to seepage, dampness, moisture and leakage of water, allowing the grout to overflow from the vent holes ( i.e. holes at diagonally opposite corners), to ensure no pockets left. 5. Taking holes one by one in the staggered form for grouting purposes and in each case holes at the diagonally opposite end will be acting as vent holes. 6. Filling the entire area by 15 cm. deep water for ponding test. The ponding test shall be checked after 7 days by the officer of the rank not below Executive Engineer along with Zonal Executive Engineer to ensure that there is no leakage found. The certificate to this effect shall be given by the concerned engineer. 7. Repeating step 4 to 6 until the entire structure is found completely waterproof, if any leakage is found 8. Laying the flooring of broken China-mosaic (broken pieces of China glazed tiles) of approved colour set in 25 mm. average bed of C.M. 1:3 with waterproofing compound to correct level and slope (1:100) well compacted and finished; such that minimum coverage of China mosaic chips is about 90% of the total area of slab. The above treatment shall continue along the inner side of parapet or the adjoining wall upto 30 cm. high as per the above specifications regarding cement mortar in shape of round vata with necessary groove etc. complete. 9. Curing the flooring continuously for minimum ten days so as to render the surface hard and tough to withstand weather and normal domestic use. 10. Cleaning the slab and removing and carting the debris;cleaning the top of all dust, loose material,stains etc. complete as directed. NOTES : 1. No extra payment will be made for brickbat concrete if any, required to fill up the voids which are developed in the process of removing top layer. If there are any such voids; the same shall be filled up with brick bat concrete so that levelled surface is at a correct level and slope is available for laying China mosaic flooring. 2. The finished terrace surface shall be paid for the actual area treated including cement vata.	sqm	₹ 1,347
R3-CS-WP-46	Providing waterproofing treatment to the part portion of the existing (old building) terrace/ top slab at any floor level including slab portion beneath overhead water tank by: 1. Dividing the part portion of the existing slab area taken for grouting by marking grid at a spacing of 1.2 m. c/c in either direction and form square panels of the size 1.2 m. x 1.2 m. and drilling the holes (by using machine) 37 mm. to 50 mm. dia upto required depth in the R.C.C. slab in staggered form at the junction of the above marked grid as specified and directed by an Engineer in charge. 2. Filling the holes only at bottom portion with 10 mm size metal, inserting the grouting nozzle in the drilled hole for grouting and making the hole watertight by filling the gap between nozzle and the hole with cement mortar 1:1 or any other suitable material as a sealant. 3. Injecting the cement grout admixed with waterproofing compound (one part of cement to 2 parts of water is recommended), by giving injection under pressure. This proportion may be changed to leaner or richer mix as per requirement at site and the process of grouting as the capillaries present in the slab get filled by cement grout then for further grouting leaner mix (not less than 1:5 may be required for further grouting) admixed with w/p compound with required pressure not less than 0.3 kg/sq.cm by grout pump so as to seal all inherent holes, honey combs, cavities and voids and making the whole structures consistent and homogeneous solid mass resistant to seepage, dampness, moisture. When the portion of the slab covered by a hole is completely filled up with grout, allow sufficient quantity of grout to overflow from the vent holes ( i.e. holes at diagonally opposite corners will act as vent hole), to ensure no air pockets left. 4. Taking holes one by one in the staggered form for grouting purposes and in each case holes at the diagonally opposite end will be acting as vent holes. 5. Filling the entire area by 15 cm. deep water for ponding test. The ponding test shall be checked after 7 days by the officer of the rank not below Executive Engineer along with Zonal Executive Engineer to ensure that there is no leakage found. The certificate to this effect shall be given by the concerned engineer. 6. Repeating step 2 to 5 until the entire structure is found completely waterproof. 7. Sealing the holes with suitable type of sealant material and curing the slab for 10 days and cleaned. The rate includes watering, tapping curing, and cleaning the top of all dust, loose materials stains etc. complete as directed. NOTE : The part portion of terrace slab shall be paid for actual area treated.	sqm	₹ 364
R3-CS-WP-47	Providing and laying water proofing treatment in sunken portion of WCs, bathroom etc., by applying cement slurry mixed with water proofing cement compound consisting of applying : a) First layer of slurry of cement @ 0.488 kg/sqm mixed with water proofing cement compound @ 0.253 kg/sqm. This layer will be allowed to air cure for 4 hours. b) Second layer of slurry of cement @ 0.242 kg/sqm mixed with water proofing cement compound @ 0.126 kg/sqm. This layer will be allowed to air cure for 4 hours followed with water curing for 48 hours. The rate includes preparation of surface, treatment and sealing of all joints, corners, junctions of pipes and masonry with polymer mixed slurry.	sqm	₹ 447
R3-CS-WP-48	Providing and laying water proofing treatment on roofs slabs by applying cement slurry mixed with water proofing cement compound consisting of applying: a) after surface preparation, first layer of slurry of cement @ 0.488 kg/sqm mixed with water proofing cement compound @ 0.253 kg/sqm. b) laying second layer of Fibre glass cloth when the first layer is still green. Overlaps of joints of fibre cloth should not be less than 10 cm. c) third layer of 1.5 mm thickness consisting of slurry of cement @ 1.289 kg/sqm mixed with water proofing cement compound @ 0.670 kg/sqm and coarse sand @ 1.289 kg/sqm. This will be allowed to air cure for 4 hours followed by water curing for 48 hours. The entire treatment will be taken upto 30 cm on parapet wall and tucked into groove in parapet all around. d) fourth and final layer of brick bat with cement mortar(which will be paid for separately). For the purpose of measurement the entire treated surface will be measured.	sqm	₹ 558
R3-CS-WP-49	Providing & Making Waterproofing Treatment to the Chajja by finishing top surface with 20 mm thick 12 C.M. plaster with addition of approved water proofing compound as per manufacturers specifications and neat cement finish,including drip moulding at edge ,at bottom of chajja & cement vatta above chajja along the junction with wall etc complete. as per FMB item No. 5.22 but for new surfaces & as directed by the Engineer-In-Charge. Note:- 1) Rates of all the items in painting section are inclusive of staging or scaffolding wherever necessary of any height for internal painting and upto 10m height from ground level for external painting. Refer separate item for additional external painting work abve 10m from ground level. 2) The manufacturer’s representative should be present when the work of waterproof cement paint is being carried out and guide to the labour staff of the contractors as regards the proportion of the mix of paint and water and method of applying the paint etc. is concerned. 3) The contractors must produce a certificate from the manufacturers that the work is carried out satisfactorily under the supervision of representative of the manufacturers and that requisite quality and quantity of cement paint as being actually used on the particular work and that the entire work has been carried out in a satisfactory and workmen like manner.	sqm	₹ 496

Source: Unified Schedule of Rates 2023 (Buildings), Municipal Corporation of Greater Mumbai. Rates are shown as published; check the official book and its correction slips before you submit an estimate. BESTimate is not issued by or affiliated with this department.

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