B.R.R. Vamsadhara Project Circle, Srikakulam

Carrying out Double Check Bench Mark (DCBM) work and establishing Bench Mark values along the alignment on permanent structures, including submission of Level Field Books, cost and conveyance of all materials, stationery, labour, and all other incidental and operational charges, as directed by the Engineer-in-Charge, for the finished item of work.

Investigation , Conducting block levels for contours at an intervel of 30 meter including obtaining approval from competant authority as directed by the Engineer-in-charge.

Carrying out Hydrographic Survey in at 50 m intervals using Echo Sounder, DGPS, Hypack hydrographic software, and survey boat, inclusive of equipment, manpower, and mobilization charges.

Conducting a longitudinal survey at 25 m intervals along river, including the cost of labour charges, and all incidental and operational expenses required to complete the finished item of work as directed by the Engineer-in-Charge.

Conducting cross-section surveys at 100 m intervals, taking levels at 3 m spacing as per standard specifications, for the purpose of preparation of estimates as directed by the Engineer-in-Charge.

Drilling 80 mm dia hole through over-burden using casing shoe bit vertical or inclined upto 10 degrees to vertical as directed including cost of all materials, machinery, labour, water charges, reaming, collection of wash samples at suitable intervals, logging and lebelling, supplying honne wood core box, fixing casing pipes ( excluding cost of casing pipes ) etc., complete for depth upto 30 m from surface including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge. For providing HDPE or light black MS casing pipe add the cost of pipe per Rm.

Drilling 76 mm dia ( NX ) core hole in all types of rocks (other than Hard Rock) including Masonry/CC (where drilling is not possible by casing shoe) using diamond core bit vertical / inclined upto 10 degree to vertical as directed including cost of all materials, machinery, labour, water charges, and redrilling in case of collapse of sides etc., complete for depth upto 30 m from surface for Primary and Secondary Holes 1. For drilling in all types of rocks (other than hard rock) including masonry/CC beyond 30 m upto 60 m from surface increase the rate per Rm by 25 percent. 2. For drilling in all types of rocks (other than hard rock) including masonry/CC beyond 60 m upto 90 m from surface increase the rate per Rm by 40 percent.

Drilling 76 mm dia ( NX ) core hole in hard rock using diamond core bit vertical / inclined upto 10 degree to vertical as directed including cost of all materials, machinery, labour, water charges, collection of core samples, logging and lebelling, supplying honne wood core box and redrilling in case of collapse of sides etc., complete for depth upto 30 m from surface. 1. For drilling in hard rock beyond 30 m upto 60 m from surface increase the rate per Rm by 25 percent. 2. For driiling in hard rock beyond 60 m upto 90 m from surface increase the rate per Rm by 40 percent.

Light black MS casing pipe 100 mm dia (4mm thick) for boreholes

Platform for drilling of bore holes

Collection of Undisturbed soil samples 38/100 mm dia (Foundation Soils), from Trail Pits (2 m depth) @ 150 m along proposed Barrage to access foundation soil properties

Collection of disturbed soil samples (Borrow area Soils)

Conducting all necessary laboratory tests of soil samples & collection of soils samples for Natural density and Moisture content including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting soil testing for Atterberg’s Limits including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting soil testing for Grain size analysis (Sieve & Hydrometer) including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting soil testing for Specific gravity including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting all necessary laboratory tests of soil samples for Field density on 100mm dia samples including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting all necessary laboratory tests of soil samples for Permeability Test including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting all necessary laboratory tests of soil samples for Differential Free swell % including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting all necessary laboratory tests of soil samples & collection of soils samples for Unconsolidated, Undrained Triaxial Quick test without pore pressure measurements at FDD & SMC including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Conducting all necessary laboratory tests of soil samples & for Consolidation Test (Odometer Test) including all other incidental charges and other operations necessary to complete for finished item of work as directed by the Engineer-in-charge.

Natural Density/Bulk Density/Unit weight/Dry Density/Wet Density

Water absorption test

Specific Gravity

Unconfined Compressive strength

Point load strength index

Modulus of Elasticity

Poisson's Ratio

Tensile strength

Triaxial Shear Parameters (c & 𝜙 )

Hardeness of Rock

Preparation of designs and drawings for Barrage & Protection wall as per standard specifications, submission for approval to the competent authority, and as directed by the Engineer-in-Charge

Preparation of estimates for Barrage & Protection wall as per standard specifications, submission for approval to the competent authority, and as directed by the Engineer-in-Charge

Hydro- Mechanical Designs : Hydro Mechanical Design of structures and preparation of drawings in AUTOCAD, design memorandum and writing of Design chapters

Project Hydrology Studies : Detailed studies for estimation of water availability, design flood including writing of the report

Compilation of Studies, Data and Preparation of Detailed Project Report as per CWC guidelines

MOTA and Other Statutory Clearances

TA/DA of Designers Visits (5% of total emoluments)

Preparation of Land Plan Schedules for Barrage, as per the standards duly marking the boundary of land widths both on village maps showing the widths required Survey Number wise and holding wise for acquisition including labour charges, cost of materials and all materials and operations, required to complete finished item of work including obtaining approval from competant authority as directed by the Engineer-in-charge.

Providing and fixing 20 x 20 x 75 cm size roughly dressed boundary / demarcation / chainage / arrow stones including cost of all materials, labour, engraving marks, fixing in position, murum filling etc., complete with lead upto 50 m and all lifts.Centre line stones at 100 m interval for Barrage Banks

Providing and fixing 20 x 20 x 75 cm size roughly dressed boundary / demarcation / chainage / arrow stones including cost of all materials, labour, engraving marks, fixing in position, murum filling etc., complete with lead upto 50 m and all lifts. LA Boundary stones at 100 m interval on both sides for Barrage

Providing and fixing 20 x 20 x 75 cm size temporary bench mark stones at 500 m interval in CC 1 : 4 : 8 using 40 mm down size graded coarse aggregate including cost of all materials, labour, dressing top surface, engraving BM data etc.,complete with lead upto 50 m and all lifts for Barrage

Hiring of vehicles for investigation and Land acquisition work including fuel, lubricants, minor repairs and slary of the driver etc. complete.