Short term Maintenance Work from Km 36.000 to km 71.000 of NH-512 length 35 Km in the district of Dakshin Dinajpur under N.H. Division No. VII, P. W. Roads Directorate during the year 2026-27 Job No. NH-512 WB 2026-27 STMC-02.

Providing spot reconditioning, reconstruction and regravelling to repair specific erosion or other damages for restoring the eroded area to originally constructed cross section on cuts and fills slopes/shoulders conforming to Technical Specifications Clause no. 3002. Fill material should be brought from borrow areas located outside ROW conforming to Technical Specification no. 305. Watered and well compacted with plate compactor or power rammer with all leads and lifts as directed by the Engineer (Quantity of compacted Fill material to be measured on cross sectional area basis)

Clearing, cleaning, deepening and reshaping of roadside unlined/kaccha drains and making shallow kaccha lateral drains on shoulders wherever required, including removal and disposal of sediments, extraneous debris and vegetation growth blocking the free flow from site outside ROW with all leads and lifts complete in all respects as directed by the Engineerin- Charge and as per Maintenace Standards Clause no. 3.1 (Frequency of cleaning in urban areas will be quarterly whereas in rural areas, it will be twice in a year i.e. before and after monsoon).

Removal of rank vegetation/weeds and undesirable vegetation from shoulders, embankment slopes upto ROW (both sides) complete in all respects including breaking of clods, rough dressing and disposal of waste material and vegetation at a place outside ROW as per direction of Engineer-In-Charge and as per Maintenance Standards Clause 3.3 (Frequency will be once in a quarter).

Providing, laying and compacting Wet Mix Macadam (WMM) base course with approved materials complete as per Technical Specifications Clause no. 406 of MoRTH

Prime Coat on WMM Surface by SS1 Cationic emulsion @ 0.85kg/sqm

Providing, laying and compacting Dense Graded Bituminous Macadam complete as per technical Specification Clause no. 505 including tack coat as per Technical Specifications Clause no.503.

Tack Coat on WMM Surface by RS1 Cationic emulsion @ 0.275kg/sqm

Providing, laying and compacting Bituminous Concrete as per technical Specification Clause no. 507 including tack coat as per Technical Specifications Clause no. 503.

Tack Coat on bituminous surface using RS1 Cationic emulsion @ 0.250kg /sqm.

Replacement of stolen/missing retro-reflectorised traffic sign boards by providing and fixing new retroreflectorised cautionary, mandatory and informatory sign as per ASTM D 4956-04 made of High intensity grade Microprismatic sheeting Type-IV, fixed over aluminium sheeting 2.0 mm thick supported on a MS Angle Iron Frame comprising of 40 mm X 40 mm X 4 mm. This frame is further welded to MS Angle 75 mm X 75 mm X 6 mm size, 3.5 meter high vertical post complete as per drawing. This vertical post shall be embeded in M-15 grade cement concrete in a pit of size 450 mm X 450 mm X 600 mm, 600 mm below ground level complete in all respects as per direction of the Engineer. b) Cautionary/Warning sign i) Triangular 900 mm side