Drainage and Sewerage Systems for Buildings and Plots of Land; Specifications for the Determination of the Internal Diameters and Nominal Widths of Pipelines— 28 стр.
Contract Procedure for Building Works; Part C: General Technical Specifications for Building Works; Gas, Water and Sewage Installation Works Inside of Buildings— 9 стр.
Contract procedure for building works; part C: general technical specifications for buildings works; gas, water and sewage plumbing works inside of buildings— 10 стр.