ER to Metal crash barrier on Nelakondapally-Palair road at km.5/4-8 (Tankbund portion) in Khammam District.

Supplying and installation of delineators (Roadway indicators) not less than 800mm high above ground level.The delineator shall have a core and shell construction which shall be made of tough, high impact resistant,injection-moulded, thermoplastic outer body. The inner core shall consist of powder coated or painted Mild steelof minimum thickness 1.0mm. The delineator should have top retro-reflective unit consisting of white color micro prismatic non metallic retro-reflective sheeting on both sides having a minimum exposed area of 125 cm2each side and bottom retro-reflective unit consisting of red color micro prismatic non metallic retro-reflective sheeting on both sides having minimum exposed area of 35 cm2 each side confirming to ASTM D4956 type XIstandards. The delineators shall be fixed to the ground by inserting the root of the delineator up to the markedportion and by firm concrete filling as per the instructions by engineer in-charge

Providing and erecting a "W" metal beam crash barrier comprising of 3mm thick corrugated sheet metal beamrail, 70 cm above road/ground level, fixed on ISMC serieschannelvertical post, 150X75X5mm spaced 2mcentre-to-centre, 1.80m high, 1.1m below ground/road level, all steel parts and fitments to be galvanised by hotdipprocess,all fittings to conform to IS: 1367 and IS: 1364, metal beam rail to be fixed on the vertical post witha spacer of channel section 150X75X5mm, 330mm long complete as per Clause 810.