Diversion of seepage water from crown inside tunnels under SSE/BTJL section (E File Comp No. 58515)

Providing and injecting water cut PU foaming material like Normat Tampeur125/Mountain Grout Flexible OR Tamcryl 3000(special for concrete lining)or equuilent specification with Electric/Pnumating high pressure grouting pump after drilling holes of diaa 1 20mmx1300mm and fixing NRV packers after cleaning the holes for grouting. The cost includes the NRV packers and cutting the same after grouting is completed and repair with polymer cement/perma plast AC cement etc complete. Note:Before starting the work concern AEN/SEN will mark the area to be tackled for arresting of water seepage and payment shall be made after water seepage is fully arrested by above method Above/

Providing water proofing the tunnel with Norment Tamseal 800 Fibre patch WP (water plug) or equivalent specification with spray application method with contractors own all equipments 1 such as shorcreting machine, air compressor, consumeables, tools and accessories, labours, scaffolding etc. As directed including all lead, life complete. NOTE: Tamseal 800 Fibre patch WP will be supplied by KRCL or will be paid under separate item. Thickness of the spray will be up to 5mm in uniform of tunnel rock/lined surface. Above/

Supply of Norment Tamseal 800(Water proofing Membrane) Grey version Fibre patch WP(water plug)/OR equivalent specification. Above/

Arrangement of scaffolding in MS pipes, clamps, wooden planks etc, for application work at arch portion inside the tunnel Above/

Supply and install RAM injection lances with special driver into the drilled holes up to 2 mtr deep for deep grouting to fill the voids Above/

Drilling of weepholes up to100mm dia of up to 0.8to1.0mtr long to the lined wall in side the tunnel under traffic block including compressor, jack hammer drill rods, driller and other men, materials etc, complete as directed by Engineer-in-charge

Supply of 75mm diameter PVC plug bends with connector at site. Running

Supplying, joining& fixing PVC pipes of 75mm out side diameter and 2.6 mm wall 3 thickness pipes confirming to IS4985 to withstand a pressure of 4.6Kg/sq cm with clamps or solvent cement for joining of pipes including cutting in required length as directed by Engineer-in- Charge with all contractor's own materials, labour, tools, equipment, etc with all leads & lift and as directed by Engineer-in-Charge Above/

Sealing cracks/pores concrete by injection process through nipples/grouting complete as per technical specification222071) Neat Cement Grout with 20% anti shrinkage compound w.r.t Cement. Above/

Supply and using cement Above/

Grouting with micro fine cement using admixtures for attending initial setting time of 1 10 minutes & final setting time in 30 minutes with all contractors own materials, labour, tools, equipment, scaffolding, cement, admixtures etc with all lead & lift and as directed by Engineer-in- charge.