Details: taking out carefully g.c.i. or c.i. or asbestos sheets (including ridges etc.) from roof or wall after unscrewing bolts, nuts, screws etc.and stacking the material at site as directed. .(payment to be made on measurement of portionof roof or wall removed.) galvanised corrugated iron sheet work (excluding the supporting frame work) fitted and fixed with 10 mm. dia j or l hook-bolts, limpet and bitumen washers and putty complete with 150 mm. end lap and one corrugation minimum side lap.(payment to be made on area of finished work)(gci sheet to be supplied by contractor)(i) in roof:-c) with 0.80 mm thick sheet galvanised iron sheet ridging fitted with necessary bolts,screws, washers etc complete.(225mm end lapping)(a) 300 mm lapping each way(c) with 0.80 mm sheet m.s. structural works in roof trusses with tubular sections conforming to is: 806-1968 & is: 1161- 1998 cnnected to one another with bracket, gusset cleats as per design, direction of engineer-in-charge complete including cuttin
Sector: Irrigation