Restoration of rain damages of LWSS NTPC Jamthal Harnoda in Tehsil Sadar District Bilaspur (SH Construction of breast wall to protect the storage tank at Nehar under PDNA).

Excavation in foundation and trenches etc. in earth work in all lead and lifts in all kinds of soil such as pick work, jumper work, blasting work in soft/hard rock chiseling/wedging out of rock) where blasting is prohibited saturated soil including bailing/pumping out of water stacking the excavated soil in 15cm layers, when required into plinths, sides of foundation etc. consolidating each deposited layer by ramming and watering and then disposing of all surplus excavated earth as directed with in all leads and lifts and to the entire satisfaction of the Engineer-in-charge.

Providing and laying cement concrete 1:5:10 (1cement:5sand:10 graded stone aggregate 40mm nominal size) with 15% plum and curing complete excluding the cost of form work in retaining walls, breast walls , the size of plum shall usually be 150 to 300mm as per HPPWD specification and to the entire satisfaction of the Engineer-in-charge.

Providing form work with steel plates 3.15mm thick welded with angle iron in frame 30x30x5mm so as to give a fair finish including centering shuttering, strutting and propping etc. with wooden battens and ballies, height of propping and centering below supporting floor two ceiling not exceeding 4 mtr and removal of the same for in-situ reinforced concrete and plain concrete working:-

Vertical surfaces such as walls (any thickness) partitions and the like including attached pilasters buttresses, plinth and string courses and the like and to the entire satisfaction of the Engineer-in-charge.

Providing and laying cement concrete 1:4:8 (1cement:4sand:8 graded stone agg. 40mmnominal size) and curing complete excluding the cost of form work in foundation and plinth in all depths and to the entire satisfaction of the Engineer-in-charge.

Providing weepholes in brick masonry / stone masonry plain reinforced concrete, abutment, wing wall, return wall with 100 mm dia PVC pipe extending, through the full width of the structures with slopes of 1(V)20 (H) towards drawing face complete in all respect

Stone / boudler filling behind the retaining wall, also under floor and upstream of i/gallery under floor etc. in all leads and lifts and to the entire satisfaction of the Engineer-in-charge.