Special Repairs (SR) works for Improvement of cross drainage system by construction of R.C.C. box culverts at flood-prone locations on NH-66 in the State of Goa during FY 2026-27.

Clearing and Grubbing Road Land .(Clearing and grubbing road land including uprooting rank vegetation, grass, bushes, shrubs, saplings and trees girth up to 300 mm, removal of stumps of trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned up to a lead of 1000 metres including removal and disposal of top organic soil not exceeding 150 mm in thickness.) i) By Manual Means:- A) In area of light jungle

Excavation for Structures (Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom, backfilling the excavation earth to the extent required and utilising the remaining earth locally for road work.) v) Marshy Soil A) Manual means (upto 3 m depth)

Rubble packing with hard laterite stone under floors including watering, ramming & consolidating etc. complete

Plain/Reinforced cement concrete in open foundation complete as per drawing and technical specifications A) PCC Grade M15

Plain/Reinforced cement concrete in open foundation complete as per drawing and technical specifications. A) PCC Grade M25 Case I) Using concrete Mixer

Providing and fixing weepholes with rigid PVC make laid in position with a required slope and level while layingpipes of approved the concrete of retaining wall,wing wall and earth retainig structure complete as directed by the Engineer in charge A) 110 mm dia

Supplying and laying Terra Geo-Composite Drain consisting of a HDPE/PP/PE geonet core sandwiched between non-woven needle-punched geotextile filter layers behind abutments/retaining walls. The composite drain shall have a minimum tensile strength of 20 kN/m(MD/CD per ASTM D4595), in-plane flow capacity of 1.5 l/m.s at 100 kPa (ASTM D4716), and CBR static puncture resistance of 3000N (ASTM D6241). The geotextile filter shall feature a perpendicular permeability of ≥70 l/sqm.s(ASTM D4491) and an Apparent Opening Size (AOS) of ≤150microns(ASTM D4751). All properties must represent Minimum Average Roll Values (MARV) verified through an NABL-accredited laboratory test report. Make or Supply by GEOQUEST India , SOLMAX as directed by the Engineer in charge.

Providing and erecting a "Thrie" metal beam crash barrier comprising of following three factory made unites-viz. 1) Thrie Beam 2) Spacer Block 3) Vertical Post. The Thrie beam 3mm thick cold roll formed guard rail raw material Conforming to IS-5986-2011 with minimum Grade 255 & with minimum yield stress of 255 Mpa which is fixed by bolted connection to spacer block C-channel of size 75mmx150mm & 5mm thick, 54.6cm height spaced 2meter centre to centre, fixed to Vertical Post C-channel of size 75mmx150mm &5mm thick cold roll formed section made from HR coils raw material conforming to IS-5986-2011 with minimum Grade 255 & with minimum yield stress of 255MPa, with 85cms free height above road or Ground level, and embedded to 115cms deep in cement concrete block of size 35cm*35*115cm of minimum grade M15 (1:2:4) or as directed by Engineer Incharge, assembled & fixed as per drawings of MORTH&H Circular No.RW/NH/33022/1/94-DO/III, dated 24/6/1994 & construction operation as per 811 or relevant MORT&H specifications for Roads & Bridge Works (latest edition). All fittings (bolts,nuts,fasteners,washers etc.) shall be conforming to IS:1367 & IS:1364 & galvanished by hot dip zinc coated process @0.55kg/m2 conforming to relevent IS specifications all etc.complete

Dismantling of Flexible Pavements (Dismantling of flexible pavements and disposal of dismantled materials up to a lead of 1000 metres, stacking serviceable and nserviceable materials separately) I) By Manual Means A) Bituminous courses

Dismantling of Structures (Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, ncluding T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 metres) i) Lime/Cement Concrete I) By Manual Means B) Cement Concrete Grade M-15 & M-20