tender for building works(m) drain, down pipes, chimney etc?.(c). additional rate?(21)supplying, fitting & fixing upvc pipes a- type and fittings conforming to is:13592-1992 with all necessary clamps nails, including making holes in walls, floor etc. cutting trenches in any soil through masonry concrete structures etc if necessary and mending good damages including joining with jointing materails (spun yarn, valamoid/bitumen/m-seal etc) complete.a) upvc pipes: (iii) 160 mm. dia , a n n e x u r e - i basic rate of materials: (all rates of materials from k-1 to k-14 are excluding vat) 158. 40x6mm thick ms clamp on pole upto 100mm dia , a n n e x u r e - i basic rate of materials: (all rates of materials from k-1 to k-14 are excluding vat) 194. 6mm dia rag bolt with nut , sub total , cgst 9% , sgst 9% , cess 1%