Provision Of New Cop On Platforms And Replacement Of Damaged Valley Gutters And Down Take Pipes In Section Csmt-Cla. (Irpsm Id:01.02.53.24.3.51.040) (A) Improvement Of Leaky Roofing Sheet, Valley Gutter &Amp Down Take Pipe Of Cop Of High Rise Truss Pf-1 To Pf-3 At Csmt