SANS 10120-4 DB:1982 Code of practice for use with standardized specifications for civil engineering construction and contract documents Part 4: Typical schedule of quantities Section DB: Earthworks (pipe trenches)
1982SANS 10120-4 DB:1982 Code of practice for use with standardized specifications for civil engineering construction and contract documents Part 4: Typical schedule of quantities Section DB: Earthworks (pipe trenches)