Construction of 48 Flood protection Anti erosion structures in 06 districts of Tripura SH Protection of right bank of river Gomati to prevent erosion by providing cement concrete block from Bhuiyabari Dakshinpara to Boxibari LI Scheme at Ward No 08 a

Manufacturing of Cement concrete Block with mix 1:4: 8( 1 Cement : 4 River sand : 8 Jhama brick agreegate of 40 mm nominal size) including centering & shuttering of size 0.45 m X 0.45 m X 0.30 m and engraving the serial number of each block as per direction of the Engineer - in- Charge.

Placing of sand cement/cement concrete blocks of size 0.45m X 0.45m X 0.30m in slope of river bank and in river bed including preperation of bed or launching apron as per direction of the Engineer - in- Charge. Cement concrete block

Supplying testing and installation of Woven jute Geotextile (JGT) by special water repellant treatment having pore size (O90) 300 to 400 micron & untreated weight of 760 gsm thickness 2 mm width 1000 mm tensile strength 21 KN/mtr (in wrap direction)X21 KN/mtr (in weft direction) strain at break 10% (both in wrap and weft directions) over a prepared bed and providing side lapping of 150mm and horizontal lapping of 250mm duly secured to slope of embankment by U-shaped M.S staples(11gauge) at an interval of 750 mm as per direction of Engineer - in- Charge. The rate is including of preparation of bed and inclusive of all Govt taxes duties cess as leviable transportation from a reputed jute mill at/near Agartala to the work site upto 100km loading & unloading and storage of the material at site etc complete (Payment to be made on the basis of measurement on finished surface)

Joining of CC Blocks of size 0.45mx 0.45mx 0.30m with 12 mm thick cement mortar 1:6 (1 cement : 6 river sand ) to make panels as per drawing and direction of Engineer- in- Charge. in slopes of embankments and River banks etc.

Providing & fitting fixing 80 mm dia G.I pipes as weep holes including cutting as per required length etc in the centre portion of each panel of blocks as per direction of Engineer-in-charge.

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means over areas (exceeding 30cm in depth, 1.5m in width as well as 10 sqm on plan) including disposal of excavated earth, lead upto 50m and lift upto 1.5m, disposed earth to be levelled and neatly dressed. All kinds of soil (Lumpsum)

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift upto 1.5 m. All kinds of soil (Lumpsum)

Construction of Embankment with Material Obtained from Borrow Pits Construction of Embankment with approved material obtained from borrow pits with all lifts, transporting to site, spreading, grading to required slope and compacting to meet requirement of table 300.1 and 300.2 with a lead upto 1000 m as per MoRT &H Technical Specification clauses of section 300