CA NO CE CHZ CHM T 02 2026 27 RESTORATION WORK AT MIL STN NAHAN UNDER PARA 35 OF DWP

Soil Investigation:- (a) M & L for mobilization, inception meeting, and complete reporting, including detailing of investigation methodology and coordination for technical vetting with any of the IITs / NITs. (b) Topographical survey using DGPS & Total Station covering approximately 100 m stretch per slope profile (crest, slope face, toe). (c) Processing of topographical data, DEM generation, contour maps, longitudinal & crosssections for slope analysis. (d) Electrical Resistivity Tomography (ERT) for subsurface profiling, weak zone and saturation identification along slope sections 100 m stretch per slope profile. (e) Multichannel Analysis of Surface Waves (MASW) for shear wave velocity and stiffness characterization 100 m stretch per slope profile. (f) Drilling of boreholes up to 15.0 m depth, including SPTs and sampling (2 boreholes total: 2 per site at crest & toe + 2 additional boreholes at critical/large sites either at crest or middle of slope). (g) Laboratory testing of soil samples (index, strength, compressibility & chemical tests) as per relevant IS codes. (h) Slope stability analysis for 4–5 representative sections per profile under natural and fully saturated conditions using 2D limit equilibrium methods, along with seepage analysis. (j) Technical vetting of report from any of the IITs / NITs

Demolition of brickwork or stone/boulder masonary, built in cement mortar including quoins arches, pillers etc, but excluding ashlar facings, dressed stone work and precast concrete article built in cement mortar or cement lime mortar complete all as specified and directed.

Earth work in excavation in any type of soil over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5m, complete all as specified and directed.

Rough excavation in sloping ground where the excavation is accessible from one side, not exceeding 1.5 m deep and getting out, in any type of soil in cesspit etc and getting out complete all as specified and directed.

Returning filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25cm thick each, excavated soil in trenches complete all as specified and directed.

Removing excavated soil to a distance exc.1.5 KM but n exc. 5 KM and depositing where directed complete all as specified and directed.

M&L for PCC 1:4:8 type D-2 (using 40 mm graded stone aggregate) as in foundation, filling and mass concrete incl use & waste of necessary forwork, complete all as specified and directed.

Use and waste of Form work to sides of concrete for fair-finished surface of concrete for fdns, footings, bases of columns, raft and raft beams, sides and soffits of fdn and plinth beams and similar works vertical or to batter complete all as specified and directed.

Use and waste of Form work to sides of concrete for fair-finished surface of concrete to faces of walls, retaining walls, abutments, parapets and staircase railings and similar work including attached pillasters, buttresses, etc. vertical or to batter complete all as specified and directed.

Reinforced Cement Concrete Design Mix M-25 using 20 mm graded stone aggregate in foundations including rafts, footings and mass concrete complete all as specified and directed.