Plumbing: Mechanical Services: Book 1

Plumbing: Mechanical Services Book One, is an essential guide to the core plumbing principles and processes. This fifth edition includes the new regulations on heat-raising appliances and updates on relevant environmental issues and sanitation. This is a key course text for: Plumbing NVQs Levels 2 & 3 Heating & Ventilation NVQs Levels 2 & 3 Suitable for: Technical Certificates in Plumbing Levels 1 & 2. Domestic Heating courses, gas, oil, unvented hot water systems and lead sheet options connected with these courses. Professional building courses covering general aspects of plumbing Cover Plumbing:Mechanical Services Contents Foreword Preface to the fifth edition Safety on site and in the workshop Health and safety at work (HSW Act) Accident reporting Disciplinary procedures Grievance procedures General safety requirements on site First-aid procedures Accidents on site Health and safety when working near lift shafts and in excavations Electric power tools and temporary lighting General site safety Safety signs Toxic and dangerous substances and materials Safety with compressed gases and blowlamps Lifting and handling materials Levers Pulleys Slings Further reading Self-testing questions Hand tools Introduction Classification of hand tools Tools for laying and fixing sheet roof materials Pipework-jointing tools Pipe-bending tools Tools for fitting and fixing pipework Miscellaneous tools Care and maintenance of tools Further reading Self-testing questions Mechanical and special tools Gas heating equipment used by the plumber Machine tools used in plumbers’ workshops Socket- and branch-forming tools Electrical methods of soldering Drain and discharge pipe cleaners Freezing equipment for water services Power cleaning pumps Radial press jointing tools Further reading Self-testing questions Materials and fittings for gas, water services and sanitary pipework Introduction Standards and legislation relating to the construction industry Working properties of materials Pipework materials Joints and fittings Cast iron Synthetic plastics Plastics commonly used for water services and sanitary pipework Jointing materials Corrosion Protection of materials against corrosion Flow characteristics of pipe materials Pipework fixings Water storage vessels Hot water storage vessels Storage calculations Further reading Self-testing questions Working processes The Building Regulations Materials and work Drawings Using a scale rule Connections to existing lead pipe Soft-soldered joints – general principles Jointing copper tube Jointing steel pipe Jointing synthetic plastics Pipe bending Bending by hand Bending by machine Machine-bending processes Steel pipe bending Tapping and threading Soft soldering Further reading Self-testing questions Taps and valves Taps and valves – general requirements Rewashering and maintenance of taps Float-operated valves Further reading Self-testing questions The cold water supply The supply of water Approved plumber scheme Sources of water supply Characteristics and physical properties of water Water treatment Pressure in pipes and fittings Water supplies to consumers Cold water supply systems in buildings Pipe runs Protection from frost damage Cold water storage Water conservation Further reading Self-testing questions The hot water supply Heat Expansion of hot water and heating pipes Transfer of heat Energy-efficient heating and hot water systems Boilers Installation Domestic hot water pipework systems Indirect systems of hot water supply Hot water systems with a secondary circulation Defects in hot water systems Prevention of heat loss Characteristics of good insulating materials Insulation of hot storage vessels and cisterns Further reading Self-testing questions Sanitary appliances Materials for sanitary appliances Storage of sanitary appliances on site Sanitary appliances Overflows to sanitary fittings Waste fittings Brackets and supports for sanitary fittings Further reading Self-testing questions Sanitary pipework Introduction Traps Discharge pipework systems Seal loss due to bad design WC connections to discharge pipe systems Cross flow Ground floor appliances Termination of vent pipes Access points Branch discharge pipe connections Mechanical waste-disposal units Washing machines and dishwashing equipment Further reading Self-testing questions Lead sheet weatherings Introduction Methods of working Physical properties of lead Roofing terms Jointing methods Fixing methods Forming roofing details Damp-proof courses Simple external weatherings Weathering small canopies and flat roofs Valley gutters Tilting fillets Roofing calculations Further reading Self-testing questions Eaves gutters Introduction Materials for eaves gutters Methods of cutting, jointing and fixing gutters Forming and fixing Sizing rainwater gutters Setting out gutter falls Falls in gutters Rainwater pipes for eaves gutters Rainwater conservation Rainwater collection in buildings having large areas of flat roof Rainwater collection from large areas of pitched roof Inspection of gutters Testing Maintenance Further reading Self-testing questions Appendix A: Assignments Appendix B: National Vocational Qualifications Appendix C: Standard symbols formerly recommended by BS 1192 for piped and ducted services Appendix D: Colour coding of pipelines Appendix E: Useful contacts relating to heating and hot water efficiencies, courses and information Index