WBPHE /EE/AMD/NIT 50e / 2022-2023

Amount

Removing of old filter media from filter bed using skilled labour at Kalyaneswari WTP site and unloading and disposing the same outsied WTP site within 10 km. After completion of the Work , the site should be properly clean and any damages done during this works by the contractor to be repair in his own cost. All other necessary support should be arranged by the Contractor also. The rate is inclusive of all charges, labour and materials, tools and tackles, contractors profit but excluding of GST and cess required to complete the work in all respect.

Supply of filter media at Kalyaneswari WTP site and placing the same in the each existing filter bed after proper segregation by manually in layers at filter bed as per site condition not exceeding 150 mm, spreading, levelling upto the required depth etc. The filter media shall be quartz sand of effective size of 0.55 mm to 0.70 mm with a uniformity coefficient not exceeding 1.50. The sand shall be granular, hard and screened through appropriate meshes and shall be thoroughly washed to the satisfaction f the Engineer in Charge prior to the loading in filters. The sand shall be free clay, dust and other impurities and shall not contain more than 1% of micaceous matter. The sand immersed in 40% hydrochlorite acid for 24 hours shall not be more than 5% by weight. It shall not contain more than 1.5% of calcium and magnesium calculated as CaCO3 and not more than 2% weight shall be lost after. Filter media shall conform to IS:8419(Part 11)1977. After completion of the works, the site should be properly clean and any damages done during this work by the contractor to the repair in his own cost. All other necessary support should be aranged by the contractor also. The rate is inclusive of all xharges, labour and materials, tools and tackles, contractor profit but excluding GST and cess required to complete the work in all respect.

Supply of filter media at Kalyaneswari WTP site and placing the same in the each existing filter bed after proper segregation by manually in layers at filter bed as per site condition not exceeding 150 mm, spreading, levelling upto the required depth etc. The filter media shall be grit of effective size of 2.5 mm to 6.0 mm. The grit supporting the sand bed shall be hard durable and rounded and shall not disintegrate under the action of Water. The grit shall be screened through appropriate meshes and shall be thoroughly washed to the satisfaction f the Engineer in Charge prior to the loading in filters. The grit shall be free clay, dust and other impurities and shall not contain more than 1% of micaceous matter. The grit immersed in 40% hydrochlorite acid for 24 hours shall not be more than 5% by weight. Filter media shall conform to IS:8419(Part 11)1977. After completion of the works, the site should be properly clean and any damages done during this work by the contractor to the repair in his own cost. All other necessary support should be aranged by the contractor also. The rate is inclusive of all xharges, labour and materials, tools and tackles, contractor profit but excluding GST and cess required to complete the work in all respect.

Supply of filet media at Kalyaneswari WTP site and placing the same in the each existing filter bed after proper segregation by manually in layers at filter bed as per site condition not exceeding 150 mm, spreading, levelling upto the required depth etc. The filter media shall be gravel of effective size of 6.0 mm to 12.0 mm. The gravel supporting the sand bed shall be hard durable and rounded and shall not disintegrate under the action of Water. The gravel shall be screened through appropriate meshes and shall be thoroughly washed to the satisfaction f the Engineer in Charge prior to the loading in filters. The gravel shall be free clay, dust and other impurities and shall not contain more than 1% of micaceous matter. The grit immersed in 40% hydrochlorite acid for 24 hours shall not be more than 10% by weight. Filter media shall conform to IS:8419(Part 11)1977. After completion of the works, the site should be properly clean and any damages done during this work by the contractor to the repair in his own cost. All other necessary support should be aranged by the contractor also. The rate is inclusive of all xharges, labour and materials, tools and tackles, contractor profit but excluding GST and cess required to complete the work in all respect.

Supply of filet media at Kalyaneswari WTP site and placing the same in the each existing filter bed after proper segregation by manually in layers at filter bed as per site condition not exceeding 150 mm, spreading, levelling upto the required depth etc. The filter media shall be gravel of effective size of 12.0 mm to 37.0 mm. The gravel supporting the sand bed shall be hard durable and rounded and shall not disintegrate under the action of Water. The gravel shall be screened through appropriate meshes and shall be thoroughly washed to the satisfaction f the Engineer in Charge prior to the loading in filters. The gravel shall be free clay, dust and other impurities and shall not contain more than 1% of micaceous matter. The grit immersed in 40% hydrochlorite acid for 24 hours shall not be more than 10% by weight. Filter media shall conform to IS:8419(Part 11)1977. After completion of the works, the site should be properly clean and any damages done during this work by the contractor to the repair in his own cost. All other necessary support should be aranged by the contractor also. The rate is inclusive of all xharges, labour and materials, tools and tackles, contractor profit but excluding GST and cess required to complete the work in all respect.

Supply of filter media at Kalyaneswari WTP site and placing the same in the each existing filter bed after proper segregation by manually in layers at filter bed as per site condition not exceeding 150 mm, spreading, levelling upto the required depth etc. The filter media shall be gravel of effective size of 37.0 mm to 40.0 mm. The gravel supporting the sand bed shall be hard durable and rounded and shall not disintegrate under the action of Water. The gravel shall be screened through appropriate meshes and shall be thoroughly washed to the satisfaction f the Engineer in Charge prior to the loading in filters. The gravel shall be free clay, dust and other impurities and shall not contain more than 1% of micaceous matter. The grit immersed in 40% hydrochlorite acid for 24 hours shall not be more than 10% by weight. Filter media shall conform to IS:8419(Part 11)1977. After completion of the works, the site should be properly clean and any damages done during this work by the contractor to the repair in his own cost. All other necessary support should be aranged by the contractor also. The rate is inclusive of all xharges, labour and materials, tools and tackles, contractor profit but excluding GST and cess required to complete the work in all respect.

Dismantling all types of plain Cement concrete works, stacking serviceable materials at site and removing rubbish as directional within a lead of 75m. a. In ground floor including roof.

i. Up to 150mm thick.

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20mm normal size) excluding shuttering and reinforcement if any

a. Pakur variety.

Supply delivery at site of 400 mm dia Cast Iron heavy duty double flanged pncumatically operated sluice valve generally conforming to IS:14846, having body, door, dome, gland in Cast Iron IS:210 Gr. FG 260, four faces and spindle nut og gunmetal to IS318 Gr. LTB 2, outside screw rising stainless steel AISI 410 spindle, valves suitable for a maximum working presure of 10 kg/cm2 (seat Test) & body tested to 15 kg/cm2. langes faced and drilled ti BS 10 Table D. Make-IVIl/Other Approved make)

installation of the above supplied pneumatic sluice valve after dismantling of the damaged one and carrying it to site store including supplying of new nuts, bolts and rubber insertion, making necessary flange joints etc and testing all complete as per direction of EIC.

Add. GST@18%

Add. Cess@1%

M/S. SWAPAN BANERJEE

BENGAL CONSTRUCTION

M/s. Jit Enterprise