e NIT No. -WBIW/EE/BID/e-NIT- 29 of 2025-26, Sl No. - 21

Making cubical bamboo porcupine cages with bamboo of 60 mm to 75mm dia. having length of 2 metre each for all horizontal and vertical struts and 2.8 metre length for diagonal struts, 3 nos horizontal and 3 nos vertical struts should be placed equi-distant from each face to make the square cage of outer dimension 75 cm x 75 cm and projecting each strut by 60 cm on all directions. Two nos dioganals or cross bamboo posts should be placed on each face having their centre tied with the centre of cage properly including fitting, fixing corners, vertical, horizontal and diagonal struts with iron nails not less than 20 cm long and tying corners with 16 SWG galvanized iron wire, filling the cages with 1st class kiln burn Brick @ 80 nos bricks per cage. Cages builts with 10 SWG hexagonal or square pattern 10 cm mesh, with proper lapping, tying and sewing with 10 SWG GI wire including cost of all materials, carriage to site and laying the same in the bed or slope of the river complete as per direction of the Engineer - in - Charge . ( N.B::- If G I wirenetting is not considered then Rs. 348.00 per cage may be deducted from the following costs, towards cost of wire netting including OH and conctarcor's profit .) For cages of size 75cm x 75cm x 75cm with 1st class kiln burn Bricks (a) Single cage.

Extra rate for items abovre for dumping by boat in flowing water including cost of hiring of boat, boatman, loading into boat and dumping in specified location including all other equipments etc. complete as per direction of the Engineer-in-charge.

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