tender for supply fencing material for plantation centers-- 1 galvanized steel barbed wire -wire type - bline wire - galvanised steel wire of 2.5 mm diameterpoint wire - galvanised steel wire of 2.5 mm diametergalvanized steel barbed wire type b the barbs shall have four points and shall be formed by twisting two point wires each two turns, tightly around one line wire making all together four complete turns line wire 2.5 mm, point wire 2.5 mm distance between two barbs 75 mm, conforming to is -278-2009 2 hooks - 7 no., top hook should be provided 100 cm below the top of poles, and bottom hook should be provided 500 cm above the bottom of poles. the central distance between the top and bottom hooks shall be equally divided to fix remaining hooks. manufacturing - in order to ensure desired compressive strength, rcc fencing poles should be compacted with the help of platform vibrators, surface should be uniform and free from voids. the concrete cover over the reinforcement should not be less than 1.5 cm.