CA NO. CWE/CHM(U)-86/2022-23 REPAIR/ MAINT OF VARIOUS OVER HEAD TANK, SUMPS AND OTHER MISC CIVIL WORKS UNDER GE(U) CHANDIMANDIR

Amount

Material & labour for cleaning of RCC surface to remove dust, loose particles, etc with compressed air or any other suitable technique depending on site conditions, grinding ant sharp edges and cutting the tie rods an d filling the same the internal surfaces of overhead tanks of appx height 20-25 mtr with all safety equipment & scalf folding to reach at required height & Repairing of pot holes, bug holes with Sika Latex SBR repair mortar(if any) and treating the cracks by opening them into V grooves by repair mortar modified with Sika Latex SBR complete all as specified and directed. Note : Cost of Scaffolding, safety equipment shall deemed to be included in quoted rates

Material & labour for filling ready mix Polymer modified mortar (PMM) in grooves of any depth of bricks wall joints and construction joint coving should be made by PMM. PMM shall have compressive strength >= 50N/Sqmm (28 days) according to ATSM C 109; flexural strength > 5 N/Sqmm (7 days) according to ASTM C 293-79 complete all as specified and directed. Make : Sika- Monotop 122 F or equivalent as approved by GE

Supply & apply solvent free,moisture insenstive epoxy resin based patch repair putty on vertical surfaces. The putty shall be applied to a thickness of minimum 20 mm on pipe penetration joint to concrete complete all as specified and directed. Product : Sikagard -694 F(I) or equivalent ,Yeild 0.6 ltr/Kg as approved by GE

Supply and applying a glass fibre reinforced acrylic cementitious waterproofing coating system in layer of Top coat @ 1.5 kg/Sqm above fibre reinforcement mesh fix over base coat @ 0.70 Kg/Sqm over a coat of primer @ 0.20 Kg/Sqm, after proper surface preparation of internal surfaces of overhead tanks of appx height 20-25 mtr with all safety equipment & scaffolding to reach at required. Material used as per IS 2645,IS 101,Elongation at break 40% ,slant shear bond strength 4 N/Sqmm , water permeability passes as per IS 2645. Make : SikaTop® Seal-109 hi or equivalent as approved by GE Note : Cost of Scaffolding, safety equipment shall deemed to be included in quoted rates

Supply & applying a proctection two component of solvent free ,high build thixotropic epoxy resin based coating for very good chemical and mechanical by applying seal coat @ 0.25 kg/Sqm over a coat of primer @ 0.2 kg/Sqm of internal surfaces of overhead tanks of appx height 20-25 mtr with all safety equipment & scaffolding to reach at required. Material used conform to USFDA 175.300 , IS 13239-1991, IS101 -1990 (part 6 sec ),resin density 1.22 kg/L at +27 degree C & solid content 49% by weight complete all as specified and directed. Make : Sikagard 67 or equivalent as approved by GE

Material & labour for taking out /pumping out contaminated sewage water from sewage sumps and dispose off out side MOD land & STP complete all as specifed and as directed by the Engr-in-Charge. Note: Dewatering shall be done by suction pump/any mechanical means and disposed by truck mounted trailorsand cost of the same shall be deemed to be included in quoted rates. (ii) HIGH PRESSURE CLEANING AND SCRUBBING : Cleaning of walls ,ceilng and floor by High pressure water jet mixed with detergent /cleaning agent appropriate for sludge clening having rotary as well as flat jets for effective cleaning of the nooks, walls and corners and then scrubbing for sticky stain (If required) (iii) VACCUM CLEANING : Wet and dry vaccum cleaning for moping all dirt particles and residual sludge present in the sumps by Industrial vaccum cleaner. (iv) Necessary T&P shall be arranged by the contractor.

Material & labour for cleaning of sludge from sewage sumps of any capcity and upto depth including removing out all sludge and deposited to a distance outside the Min of Defence Land area to a place authenticated by civil authorities complete all as specified and directed by Engr-In-Charge and dispose off out side MOD land & STP complete all as specifed and as directed by the Engr-in-Charge. Note: Resluding shall be done by suction pump/any mechanical means and disposed by truck mounted trailorsand cost of the same shall be deemed to be included in quoted rates. (ii) HIGH PRESSURE CLEANING AND SCRUBBING : Cleaning of walls ,ceilng and floor by High pressure water jet mixed with detergent /cleaning agent appropriate for sludge clening having rotary as well as flat jets for effective cleaning of the nooks, walls and corners and then scrubbing for sticky stain (If required) (iii) VACCUM CLEANING : Wet and dry vaccum cleaning for moping all dirt particles and residual sludge present in the sumps by Industrial vaccum cleaner. (iv) Necessary T&P shall be arranged by the contractor.

Taking down cement plaster on stone/brick wall including raking out joints hacking for key and scrubbing down with water and rendering 15mm thick cement plaster on fair faces of brick work or concrete surfaces finished even and smooth with (1:4) cement mortar without using extra cement mixed water proofing compound as per manufacturer's instruction in two layers, finished even and smooth surface without using extra cement complete all as specified and directed. Note : Supply of WPC measured and paid separately under respective items here- in- after .

Taking down cement plaster on stone/brick wall including raking out joints hacking for key and scrubbing down with water and rendering 20 mm thick cement plaster on fair faces of brick work or concrete surfaces finished even and smooth with (1:4) cement mortar without using extra cement mixed water proofing compound as per manufacturer's instruction in two layers, finished even and smooth surface without using extra cement complete all as specified and directed. Note : Supply of WPC measured and paid separately under respective items here- in- after .

Material & labour for preparation newly plastered surfaces of ceiling by brooming down or steel wire brushing; scrapping down smoke soot, moulds, moss and efflorescent salts and trading oil and greasy spots and applying three coats of colour/lime wash on wall all as specified and directed.

Supply only liquid water proofing compound as approved by Engineer-in -Charge complete all as specified and directed.

Material and labour Preparation of newly treated surface of wall and applying two coats of cement base paint (colour and tint as approved by GE in any pattern) complete all as specified and directed.

Material and labour for 75 mm thick PCC type B1 (1:2:4) using 20mm graded stone aggregate as in floors and finished even and fair without using extra cement 75mm thick complete all as specified and directed.

Demolition of cement concrete in ground floor and paving n. exc. 15 cm thickness (below or above ground level) in cement concrete complete all as specified and directed.

Material and labour 50 mm thick PCC 1:4:8 type D-2 using 40mm graded stone aggregate as in sub base, finished even and rough without using extra cement complete all as specified and directed.

Providing and laying 80mm thick factory made chamfered edge cement concrete paver block of M 35 grade with approved colour, design and pattern as in footpath, parks, lawns, drive ways or ligat traffic parking etc, of required strength, thickness &size/shape, made by table vibratary method using PU mould, laid in required colour and patten over and is required colour and pattern over and including 50mm thick compacted bed of fine sand compacting and proper laying of inter locking paver blocks into the sand bedding layer through vibratory compaction by using plate vibarator, filling the joints with fine sand and cutting of paver bolcks as per required size and pattern, finishing and sweeping extra sand complete all as specified and directed.

Material and labour for cutting and cleaning away small sapling surbs and under growth roots from brick wall chajjas, roof etc including taking out complete root from inside wall chajjas and making good surfaces in cement concrete (1:2:4) type or in CM(1:4) to match the existing surfaces all as directed

Material and labour for providing 50 mm thick factory made precast perforated reinforced cement concrete cover slab type B1(1:2:4) using 20mm graded stone aggregate with 2 mm thick MS frame with required width and necessary reinforcement set in cement mortar 1:4 over drains /ducts size of drain /ducts covers order as required at site complete all as specified and directed by Engr-in-Charge

Material and labour for 75 mm thick in cement concrete C2 1:3:6 (40mm graded aggregate) for plinth protection at 3 Mtr intervals and turning , with joints shall be with sand or bituminous mastic complete all as specified and directed by Engineer-in -Charge

Material and Labour 100 mm thick cement concrete type B2, 1:2:4 using (40 mm graded stone aggregate )as in flooring finished even and smooth without any extra cement complete all as specified and directed by Engineer-in -Charge

Material and labour for forming 12 mm thick ex?pansion joints filled with pre-formed bituminous filler and top 30mm primed and sealed with sealing compound, Grade ‘B’ complete all as specified and directed.

Material and labour for 25mm thick PCC, 1:2:4,type B-0 using 12.5mm graded mechanically crushed stone aggregate as in sub floor/leveling course to receive topping complete all as specified and directed.

Material and labour for Non - skid Ceramic coloured tiles 7 to 8 mm thick (square/rectangular) area of each tile exceeding 0.06 sqm but not exceeding 0.11 sqm, in floors over and including provision of cement screed bedding layer 15 mm thick in CM 1 : 6 etc. set and jointed in neat cement slurry and pointed in white or coloured cement to match complete all as specified and directed.

Dismantling floor hearth or wall tiling including cement mortar bedding complete all as specified and directed.

Material & labour for Glazed ceramic coloured tiles (300x200mm) x 7mmthick, in vertical surface including provsion of backing coat 10mm thick in CM 1:4 set and jointed in neat cement slurry and pointed in coloured cement to match complete all as specified and directed.

Material & labour for 20 mm thick Screed bed or bedding layer over horizontal surface of overhead water tanks in cm 1:3 with admixture @ 0.10 kg per bag of cement complete all as specified and directed. (Make :Sika® Plastocrete Plus or equivalent are measured and paid separately) .

Material & labour for plaster of 15 mm thick in internal vertical surface of overhead water tanks in cm 1:3 with admixture @ 0.10 kg per bag of cement . (Make :Sika® Plastocrete Plus or equivalent are measured and paid separately) .

Supply only admixture for internal plaster complete all as specified and directed.(Make :Sika® Plastocrete Plus or equivalent )

Bharat Enterprises

M/S Gupta and Sons

Shivalik Enterprises