Common use of PLUMBING AND DRAINAGE Clause in Contracts

PLUMBING AND DRAINAGE. For preambles see "Model Preambles for Trades (2008 Edition)" and applicable Supplementary Preambles as specified in the Trades. The said Model and Supplementary Preambles apply to all work described in this document. Tenderers are therefor referred to these documents for the full meaning and intention of all descriptions and no claims of any kind whatsoever will be entertained in this regard. SUPPLEMENTARY PREAMBLES Descriptions of gutter outlets etc shall be deemed to include wire balloon gratings Descriptions of channels shall be deemed to include necessary excavation, surface preparation, compaction, etc, and disposal of surplus material on site French drains Descriptions of french drains shall be deemed to include excavation, stone filling graded from 300mm diameter at bottom to 75mm diameter at top, "?" geofabric filter blanket over stone, 300mm earthfilling over and disposal of surplus material on site Descriptions of proprietary type septic tanks shall be deemed to include excavation, bedding and jointing, concrete base slabs, jointing to drains and backfilling, compaction, etc all in accordance with the manufacturer's instructions and disposal of surplus material on site Stainless steel basins, sinks, wash troughs, urinals, etc Stainless steel for economy basins, domestic sinks and worktops shall be Type 430 (17/0) Stainless steel for urinals, basins, quality sinks, wash troughs, institutional equipment, etc shall be Type 304 (18/8) Stainless steel for laboratory sinks, photographic equipment, etc shall be Type 316 (18/8) Units shall have standard aprons on all exposed edges and tiling keys against walls where applicable Sealing of edges Outer edges of sinks, basins, baths, urinals, etc are to be sealed against adjacent surfaces with approved silicone uPVC pipes and fittings Sewer and drainage pipes and fittings shall be jointed and sealed with butyl rubber rings Soil, waste and vent pipes and fittings shall be solvent weld jointed or sealed with butyl rubber rings

PLUMBING AND DRAINAGE. For preambles see "Model Preambles for Trades (2008 Edition)Specification of materials and methods to be used - PW317" Polypropylene pipes 54mm diameter and applicable Supplementary Preambles as specified in the Trades. The said Model and Supplementary Preambles apply to all work described in this document. Tenderers are therefor referred to these documents for the full meaning and intention of all descriptions and no claims of any kind whatsoever will be entertained in this regard. SUPPLEMENTARY PREAMBLES Descriptions of gutter outlets etc under shall be deemed to include wire balloon gratings Descriptions of channels seamless copper coloured class 16 pipes jointed with Fast-fuse heat welded thermoplastic or brass compression fittings as designed for use with copper pipes as stated Pipes shall be deemed firmly fixed to include necessary excavation, surface preparation, compaction, etc, walls etc with coloured nylon snap-in pipe clips with provision for accommodating thermal movement and disposal of surplus material on site French drains Descriptions of french drains shall be deemed to include excavation, stone filling graded from 300mm diameter at bottom to 75mm diameter at top, "?" geofabric filter blanket over stone, 300mm earthfilling over jointed and disposal of surplus material on site Descriptions of proprietary type septic tanks shall be deemed to include excavation, bedding and jointing, concrete base slabs, jointing to drains and backfilling, compaction, etc all fixed strictly in accordance with the manufacturer's instructions All pipe diameters are nominal external Polypropylene pipes 63mm diameter and disposal of surplus material on site Stainless steel basins, sinks, wash troughs, urinals, etc Stainless steel for economy basins, domestic sinks and worktops over shall be Type 430 (17/0) Stainless steel for urinalsclass 12 pipes jointed with cast iron "Supraclamp" running joints Fusion welded bends, basinsonce or twice mitred as necessary, quality sinks, wash troughs, institutional equipment, etc and tees shall be Type 304 (18/8) Stainless steel factory manufactured Fusion welded bends and tees shall include jointing to pipes with PVC rubber ring double Z joint couplers Branch tees shall include flanged and bolted joints to Polycop branch pipes in addition and for laboratory sinks, photographic equipment, etc brass compression male iron to copper straight couplers Reducers shall include jointing to pipes with PVC rubber ring double Z joint couplers and reducers shall be Type 316 (18/8) Units of sufficient overall length to accommodate same All pipes shall have standard aprons be jointed and fixed strictly in accordance with the manufacturer's instructions All pipe diameters are nominal external Pipes shall be jointed with ogee joints with rubber collars or socket and spigot joints with rubber rings Pipes shall rest on all exposed edges and tiling keys against walls solid ground and, where applicable Sealing necessary, pockets of edges Outer edges of sinks, basins, baths, urinals, etc are sufficient size shall be cut around joints to enable the jointing to be sealed against adjacent surfaces with approved silicone uPVC properly performed or, alternatively, pipes shall be bedded full length on and fittings including unreinforced concrete laid in a semi-dry state immediately before pipes are laid Sewer and drainage pipes and fittings shall be jointed and sealed with butyl rubber rings Soil, waste and vent pipes and fittings shall be solvent weld jointed or sealed with butyl rubber ringsjointed

PLUMBING AND DRAINAGE. For preambles see "Model Preambles for Trades (2008 Edition)" and applicable Supplementary Preambles as specified in the Trades. The said Model and Supplementary Preambles apply to all work described in this document. Tenderers are therefor referred to these documents for the full meaning and intention of all descriptions and no claims of any kind whatsoever will be entertained in this regard. SUPPLEMENTARY PREAMBLES Descriptions of gutter outlets etc shall be deemed to include wire balloon gratings Descriptions of channels shall be deemed to include necessary excavation, surface preparation, compaction, etc, and disposal of surplus material on site French drains Descriptions of french drains shall be deemed to include excavation, stone filling graded from 300mm diameter at bottom to 75mm diameter at top, "?" geofabric filter blanket over stone, 300mm earthfilling over and disposal of surplus material on site Descriptions of proprietary type septic tanks shall be deemed to include excavation, bedding and jointing, concrete base slabs, jointing to drains and backfilling, compaction, etc all in accordance with the manufacturer's instructions and disposal of surplus material on site Stainless steel basins, sinks, wash troughs, urinals, etc Stainless steel for economy basins, domestic sinks and worktops shall be Type 430 (17/0) Stainless steel for urinals, basins, quality sinks, wash troughs, institutional equipment, etc shall be Type 304 (18/8) Stainless steel for laboratory sinks, photographic equipment, etc shall be Type type 316 (18/8) Units shall have standard aprons on all exposed edges and tiling keys against walls where applicable Sealing Flush pans shall have straight or side outlets and "P" or "S" traps as necessary Pipes for water supply shall be of edges Outer edges the class described Pipes of sinks, basins, baths, urinals, etc are to 42mm diameter and smaller shall be sealed against adjacent surfaces plain ended with approved silicone solvent welded uPVC pipes loose sockets and fittings Sewer Pipes of 50mm diameter and drainage pipes greater shall have sockets and spigots with push-in type integral rubber ring joints. Bends shall be uPVC and all other fittings shall be cast iron, all with similar push-in type joints Pipes shall be type 4 and of the class specified with "Plasson" or "Alprene" compression fittings Polypropylene pipes of 54mm diameter and smaller shall be seamless copper coloured class 16 pipes jointed with "Fast-fuse" heat welded thermoplastic or brass compression fittings as designed for use with copper pipes, as described Pipes shall be firmly fixed to walls, etc with coloured nylon snap-in pipe clips with provision for accommodating thermal movement and jointed and sealed fixed All pipe diameters are nominal external Copper pipes Pipes shall be hard drawn and half-hard pipes of the class described. Class 0 (thin walled hard drawn) pipes shall not be bent. Class 1 (thin walled half-hard), class 2 (half-hard) and class 3 (heavy walled half-hard) pipes shall only be bent with butyl rubber rings Soilbenders with inner and outer formers. Fittings to copper waste, waste vent and vent pipes anti-syphon pipes, capillary solder fittings and compression fittings shall be solvent weld jointed or sealed "Cobra Watertech" type. Capillary solder fittings shall comply with butyl rubber ringsISO 2016 Carried to Collection R

PLUMBING AND DRAINAGE. For preambles see "The Tenderer is referred to the relevant Clauses in the separate document Model Preambles for Trades (2008 Edition)" and applicable Supplementary Preambles as specified in the Trades. The said Model and Supplementary Preambles apply to all work described in this document. Tenderers are therefor referred to these documents for the full meaning and intention of all descriptions and no claims of any kind whatsoever will be entertained in this regard. SUPPLEMENTARY PREAMBLES Descriptions of gutter outlets etc shall be deemed to include wire balloon gratings Descriptions of channels shall be deemed to include necessary excavation, surface preparation, compaction, etc, and disposal of surplus material on site French drains Descriptions of french drains shall be deemed to include excavation, stone filling graded from 300mm diameter at bottom to 75mm diameter at top, "?" geofabric filter blanket over stone, 300mm earthfilling over and disposal of surplus material on site Descriptions of proprietary type septic tanks shall be deemed to include excavation, bedding and jointing, concrete base slabs, jointing to drains and backfilling, compaction, etc all in accordance with the manufacturer's instructions and disposal of surplus material on site Stainless steel basins, sinks, wash troughs, urinals, etc ) Stainless steel for economy basins, domestic sinks and worktops shall be Type 430 (17/0) Stainless steel for urinals, basins, quality sinks, wash troughs, institutional equipment, etc shall be Type 304 (18/8) Stainless steel for laboratory sinks, photographic equipment, etc shall be Type 316 (18/8) Units shall have standard aprons on all exposed edges and tiling keys against walls where applicable Sealing of edges Outer edges of sinks, basins, baths, urinals, etc are to be sealed against adjacent surfaces with approved silicone uPVC pipes and fittings Sewer and drainage pipes and fittings shall be jointed and sealed with butyl rubber rings Soil, waste and vent pipes and fittings shall be solvent weld jointed or sealed with butyl rubber ringsrings Pipes of 50mm diameter and smaller shall be plain ended with solvent welded uPVC loose sockets and fittings MADIBA VALLEY XXXX Xxxx No. 15 Plumbing and Drainage Pipes of 63mm diameter and greater shall have sockets and spigots with push-in type integral rubber ring joints. Bends shall be uPVC and all other fittings shall be cast iron, all with similar push-in type joints Pipes shall be type IV and of the class specified with "Plasson" or "Alprene" compression fittings Polypropylene pipes 54mm diameter and smaller shall be seamless copper coloured Class 16 pipes jointed with "Fast-fuse" heat welded thermoplastic or where so described "Polylock" compression fittings Pipes shall be firmly fixed to walls, etc with coloured nylon snap-in pipe clips with provision for accommodating thermal movement and jointed and fixed strictly in accordance with the manufacturer's instructions Pipes shall be hard drawn and half-hard "Maksal" pipes of the class described. Class 0 (thin walled hard drawn) pipes shall not be bent. Class 1 (thin walled half-hard), Class 2 (half-hard) and Class 3 (heavy walled half-hard) pipes shall only be bent with benders with inner and outer formers. Fittings to copper waste, vent and anti-syphon pipes, capillary solder fittings and compression fittings shall be "Cobra Watertech" type. Capillary solder fittings shall comply with ISO 2016 Copper pipes are to be installed in accordance with the latest revision of the Code of Practice for Copper Plumbing soldering techniques. Flux, solder, etc to be strictly in accordance with the manufacturer's requirements with special attention to copper flux composition MADIBA VALLEY XXXX Xxxx No. 15 Plumbing and Drainage Where fittings have reducing ends or branches they are described as "reducing" and only the largest end or branch size is given. Should the contractor wish to use other fittings and bushes or reducers he may do so on the understanding that no claim in this regard will be entertained Unless specifically otherwise stated, descriptions of pipes shall be deemed to include fixing to walls, etc, casting in, building in or suspending not exceeding 1m below suspension level Pipes chased into brickwork must be wrapped with two layers of xxxxx brown paper tied with wire. Rates are to include for wrapping around joints and fittings Water pipework is to be disinfected at completion in accordance with SABS 1200L (provision for disinfection elsewhere)