WBIW/CTU/CE(North) /e-NIT- 04(e)/ 2026-27 SL01

Supplying Nylon cage netting 1 metre x 1 metre x 1 metre size with knot having mesh size 17.5 cm x 17.5 cm constructed with nylon thread (210 x 24) having tensile strength not less than 250 Kg. / sq. cm. including carriage, delivery and stacking at site inclusive of all taxes complete.

Labour charges for dumping and placing in position properly filled in Nylon crates with filled in gunny / poly cement bags (minimum 25 nos. having capacity 50 kg) with local earth or sand, sewing and tying the crate with nylon wire within a lead of 150 m. and all lifts in river slope or bed by cutting trenches upto 50 cms depth, if necessary, or by boat including cost of hire charges of boat, boatmen and other necessary equipments and also including cost of bags, carriage and charge of filling bags with earth / sand but excluding cost of nylon crate as per direction of the Engineer – in – Charge. NB:- Volume of each earth/ sand filled bags should not be less than 0.028 m3 Size of Nylon crate is 1metre X 1metre X 1metre. Where boats are not necessary

Labour charges for dumping and placing in position properly filled in Nylon crates with filled in gunny / poly cement bags (minimum 25 nos. having capacity 50 kg) with local earth or sand, sewing and tying the crate with nylon wire within a lead of 150 m. and all lifts in river slope or bed by cutting trenches upto 50 cms depth, if necessary, or by boat including cost of hire charges of boat, boatmen and other necessary equipments and also including cost of bags, carriage and charge of filling bags with earth / sand but excluding cost of nylon crate as per direction of the Engineer – in – Charge. NB:- Volume of each earth/ sand filled bags should not be less than 0.028 m3 Size of Nylon crate is 1metre X 1metre X 1metre. Where boats are necessary

Earthwork in excavation in all kinds of soil for making embankments, repairs to the embankment, closing breaches etc. as per profile including supply and transporting the earth by truck or tractor or any other mechanical means on land , including loading, transporting, unloading and stacking with all lifts both ways and head load where necessary and depositing the same on embankments, channels, filling depressions in requisite profile, levelling as per direction of the Engineer-in-charge within a lead of, NB :- Measurement to be taken on the basis of stack measurement / pre- post work section measurement after deduction of void as per norms. No extra payment will be made for stacking. Beyond 1.00 km and up to 2.00 km

Design, supply and installation in position as per drawing and direction of the Engineer in Charge Cementitious Concrete Geosynthetic Mattress (CCGM) /Articulating Block in the form of Mattress with filter point wherever necessary & having biaxial metallic rope or wire or other type of reinforcement, including filling up of the CCGM or Articulating Block with cement sand grouting, mix not leaner than 1:3, having a thickness as per design but not less than 200 mm after grouting, laid over the dressed bank slope and apron, to be extended up to the deepest bed level/ apron should be provided to protect the toe erosion, including provision for tying up of the adjacent panel by zipper arrangement and additional arrangement for toe protection, if felt necessary, further including all charges for underwater grouting, fitting & fixing in position, taxes, duties, contractor’s profit & overhead all complete. Note: 1. The Geosynthetic material of CCGM/AB should conform to the following specifications. 1. Raw Material: PP / HDPE / PET 2. Mass per unit area >200 gm /sqm 3. Tensile Strength (MD) >= 45 kN/m 4. Elongation < 20% 5. CBR Puncture Strength >= 5.0 kN/m 6. Apparent Opening Size ≤ 0.5 mm 7. Water permeability index > 0.013 m/s 2. The bidder is to furnish the design for ascertaining the thickness of CCGM /Articulating Block Mattress. 3. Dressing of bank slope to proper profile has been considered through separate items. 4. The contractor shall be fully responsible for ensuring the stability and integrity of the protected riverbank slope, including countering anticipated toe scour. Accordingly, the contractor shall design and provide suitable toe protection measures, as required, to achieve a stable and continuous bank protection system. Since toe protection has been considered an integral and essential component for overall bank stability; therefore, no extra claim shall be entertained on this account.