1. Repairing of Building Services Engineering Systems Rak-43.3313 Repair Methods of Structures, exercise (4 cr) Esko Sistonen

2. Some basics...  Demolition work from the top downwards; HVAC repair vice versa  Ventilation: from negative pressure to overpressure  Cleanliness of bag filter and heat exchanger: supply, exhaust, outside, and waste air duct  Technical systems: ground loop heat pump systems,..

3. Some basics...  Planning before repair action Header Sound absorber Cold (blue) and warm (red) water supply Sewer pipe Pipes (white) from boiler and ground loop heat pump Floor heating pipes Technical room

4. Water leak of wall sump Re-insulated water pipes Dirty exhaust outlet Water leak of storm water drainage from flat roof

5. Water shut off valves -> asbestos, mould District heating system

6. Water leak of cast iron drain pipe Heat distribution room Insulation groove in suspended ceiling Inspection panel of waste sump

7. Minor water leak of old drain pipe Water leak of hot water heating system

8. HVAC Repair Works duct work machinery installations insulation work terminal installation control and monitoring work non-sewers floor drains the heat distribution room pipe installation heating coil installation water and sewer fitments

9. Installation of lining hose into air shaft of natural ventilation From natural ventilation to exhaust ventilation

10. -Bathrooms made of metal plates -Repair of plastic drain pipes

11. Alternative water and sewer pipe repair methods *renewal of the whole piping system -requires the demolition work of structures (structures of channels) -takes-6mths – interference for users (water breaks, toilets, showers, common areas or containers) -dust, noise -the end product is known: the pipes are new *pipe coating -tube in tube coating with epoxy -fast – a bit interference (takes up only 2 days) -no noise -durability of app. 20 years of experience in Western Europe, for a longer time period -Insurance companies does not necessarily give an age reduction -the coating is also possible for a warm and cold water pipes

12. Several internet links and some key words http://www.rehva.eu/ http://www.sulvi.fi/wp-content/uploads/2011/12/Ventilation-in- nZEB_Kurnitski-1.pdf http://www.sisailmayhdistys.fi/portal/fisiaq_in_english/ http://www.epa.gov/iaq/schooldesign/hvac.html http://bse.sagepub.com/ http://en.wikipedia.org/wiki/Building_services_engineering *Condition survey manuals (at least in Finnish) *HVAC (Heating, Ventilation, and Air Conditioning) *Building Services Technology (in Finland)

13. Several standards…  SFS-EN ISO 11295 (October 2010). Classification and information on design of plastics piping systems used for renovation (ISO 11295:2010).  SFS-EN ISO 11296 (2011). Plastics piping systems for renovation of underground nonpressure drainage and sewerage networks - Parts 1- 4.  SFS-EN ISO 11298-1 (2011). Plastics piping systems for renovation of underground water supply networks - Parts 1-3.  SFS-EN 12007-4 (Mars 2013). Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 4: Specific functional requirements for renovation.  SFS-EN 13380 (December 2001). General requirements for components used for renovation and repair of drain and sewer systems outside buildings.

14. Several standards…  SFS-EN 13566 (2003). Plastics piping systems for renovation of underground non-pressure drainage and sewerage Networks - Parts 1-7.  SFS-EN 15885 (January 2011). Classification and characteristics of techniques for renovation and repair of drains and sewers.