providing and applying colouring to nutan bahuudeshiya school at bhadkal gate , jubly park in ward no . 49 , providing rough cast cement plaster externally in two coats with coloured cement finish to concrete/ brick/ stone masonry surfaces in all positions with base coat 12 to 15 mm . thick in c . m . 1:4 using gray cement and rough cast treatment 12 mm thick in proportion of 1:1 1/2:3 using colour pigment including scaffolding and fourteen days curing etc . complete . ssr no . 32 . 13 , providing and applying one coat of flat oil paint of approved colour to the old structural steel work and iron work previously painted in building including scaffolding , if necessary , cleaning and preparing surface ( excluding primer coat ) etc . complete . ssr no . 35 . 08 , providing and applying priming coat over new/old steel and other metal surfaces including preparing the surface by thoroughly cleaning oil , grease , dirt and other foreign matter and scoured with wire brushes , fine steel wool , scrappers and sand paper , scaffolding etc . complete . ssr no . 35 . 20 , providing and applying two coats of exterior weather shield paint of approved manufacture and of approved colour to the plastered surfaces including cleaning , preparing the plaster surface , applying primer coat , scaffolding if necessary , and watering the surface for two days etc complete . note: for item no . 15 to 18 prior approval of superintending engineer will be necessary ssr no . 35 . 26