supply of cat b / constructional stores , fabrication and supply of retroreflective cautionary / warning sign boards from serno 1 . 01 to 1 . 17 to be made of triangle / circular as per irc 67-2012 latest revision side of 90cm with radius of 45mm at the corner of triangle made of 3mm thick aluminium composite material ( acm ) with white base of high intensity prismatic ( hip ) sheeting with border of red colour 70mm thick and arrow of black colour on white background . sign board frame shall be made of ms angle 25mmx 25mmx 4mm with nut and bolts / rivets to ensure safety against pilferage . board shall be fixed to one vertical post 50mmx50mmx5mm ms angle 3 . 60m long duly painted with attractive black and white bands of 25cm height conforming to is-1239 ( as per irc 67 / 2012 latest revision and mort&h specification ) , horn please ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , school ahead ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , falling rocks / stones ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , hospital ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , speed limit ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , men at works ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , police station ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , parking ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , steep ascent ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , hair pin bend ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , no parking ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , over taking prohibited ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , sleep descent ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , speed breaker ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , left turn ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , right turn ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification ) , narrow bridge ( dimensions , shape and size as per irc 67 / 2012 latest revision and mort&h specification )