This page contains a Flash digital edition of a book.
32


SPN AUG 2010 Pool&spaIndustry


www.swimmingpoolnews.co.uk


Your questions answered In every issue of Swimming Pool News we’ll try and get answers to questions and issues which are concerning SPATA and BISHTA members. Here Peter Lang, SPATA Technical Advisor and Chairman of the SPATA Technical Committee and Howard Gosling, Chairman of the BISHTA Technical Committee, look at some issues which have been raised on association Standards and procedures


What are the main changes to the SPATA Standards and when do they come into effect? The SPATA Standards 2010 came into effect from 1 July this year. Therefore, if you had already started a pool before 1 July, but it is not finished yet, then you should work to the old Standards; if it has not been built yet, but the designs were approved before 1 July, then this should be clarified and either the new, or the old set of Standards can be used. For any designs approved after 1 July 2010, please work towards the new set of Standards. The Standards were last reviewed in 1998 and


published in 1999 and 2000. This latest update is in a new user friendly format, with seven parts forming a single volume. There is a new Introduction volume and an index to make it easier to find items within the document, which is over 400 pages! Some of the main changes relate to updates on:


• Infinity edges – advice now included on being wary about the varying thickness of natural stone, drop the infinity wall top away from the pool so that it is not easily seen from the pool. Requirements for the overflow are the same as deck level pools.


• Electrical – 17th edition amendments check sections on connection of rotary electrical motors; spray protection for electrical equipment / boxes


• Double top tread on ladders – same as commercial pools and make sure the double tread is on the top.


• Double deep suction confirmed in previous technical bulletin


• Code of Ethics (mentioned in the last issue of SPN) • Cage of Safety – simplified version now available


Companies involved in commercial work will need to familiarise themselves with the Design and Operation of Swimming Pools (BS EN 15288), in addition to other documentation. The stance in the UK appears to be to use the most rigorous legislation, (from whatever source) to ensure high standards are maintained.


Although the items below have not been


altered, here are some further thoughts that may be useful to review: • Water take off • Pipe sizing • Filtration and flow rates • Treatment • Water conservation • Energy conservation


I am still really confused about what I have to do in relation to the Building Regulations relating to swimming pool insulation, please can you give me some key issues that I need to be aware of? As a brief summary, Part L relates to the “Conservation of Fuel and Power”, while Part F relates to “Means of Ventilation” and the changes are due to be implemented on 1 October 2010. SPATA Members will be receiving a factsheet outlining more detail about the likely impacts, once it has been finalised with the Department for Communities and Local Government. The relevant information is contained within the Building and Approved Inspectors (Amendment) Regulations 2010 Parts L and F and further information can be found in relevant documents, such as Approved Document L1A 2010 available on the website www.planningportal.gov.uk The first key point is that these Regulations will


affect indoor pools and not outdoor pools. The indoor pools (both commercial and domestic) will be included where the surrounding air and water is artificially heated and so if for any reason the pool project does not include artificial heat sources, then they would fall outside the scope of these Regulations. Although outdoor pools are not included in


these Regulations, the industry is still encouraged to address energy conservation issues for these pools, as this will assist in reducing heating costs for owners and provide a more energy efficient installation which will contribute towards reducing


CO2 emissions. The use of a heat retention cover is not included in the Regulations, but SPATA


considers this a vital part of heat conservation for consumers to consider purchasing as part of a new build, or to fit retrospectively. The main affects for the industry under these


Regulations for Part L are contained in Approved Document L1A, which outlines the changes for swimming pool basins as follows: 3.33 Where a swimming pool is constructed as


part of a new dwelling, reasonable provision should be made to limit the heat loss from the pool basin by achieving a U-value no worse than 0.25W/M2K as calculated according to BS EN ISO 13370. 3.34 In terms of Criterion 1, the dwelling


should be assessed as if the pool basin were not there, although the pool hall should be included. The area covered by the pool should be replaced with the equivalent area of floor with the same U- value as the pool surround. SPATA believes that any projects that are


signed off before 1 October 2010 have 12 months in which to start the work using the current Regulations rather than the new Regulations outlined in this factsheet, but this will be worth checking with your Local Authority where the project is based. It will become increasingly important for


members to be in contact with Building Control staff at Local Authorities to ensure they are satisfied with proposed designs and so any guidance in this factsheet must be tested first. Do not rely on this information to be accepted until you have written confirmation from the relevant Local Authority. It is understood that the current calculation


methodology for basements will be applied to swimming pool basins, although there is still some discussion about whether new calculations will be needed that take into account the effects of pool water on the thermal efficiency calculations. The basis of the thermal efficiency savings that


are required, relate to the heat loss from the pool water to the external air temperature outside the building and therefore the calculation can take into account the thermal properties of the various parts of the pool shell. This would typically include: tiling or liner material, adhesive, render


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92  |  Page 93  |  Page 94  |  Page 95  |  Page 96  |  Page 97  |  Page 98  |  Page 99  |  Page 100
Produced with Yudu - www.yudu.com