Document 7M9ryG86M5RB8eBxoMz1ONmJ6

FILE NAME: ZK/L DATE: DOC#: BO/L DOCUMENT DESCRIPTION: d:Z ---------- ---~---- --~ --- ::. :::- ::;... SEPTEMBER-OCTOBER 1968 VOLUME TWELVE. NuMBER FIVE 183 LEADER 183 NOTES OF THE MONTH Topics and contracts of general interest to spedfiers, manufacturers and installers of ',nsulatlon mclterials. 190 THERMALLY INSULATING MATERIALS 193 INSULATION IN THE COST PLAN-PART 2 195 ACOUSTICS AND DECOR IN CINEMAS 197 100,000 ACOUSTICS TESTING LABORATORY 198 ACOUSTIC AND VENTILATED CEILINGS 200 JOINT SEALANTS AND SOUND INSULATION 201 ACOUSTIC CLADDING FOR DIESEL ENGINES 202 PERSONAL NEWS 203 COMMERCIAL NEWS 205 TECHNICAL LITERATURE 207 TRADE LITERATURE 209 PRODUCTS DIGEST 222 ADVERTISERS INDEX READER ENQURRY FORM fl!RSEI~S CORRESPONDENTS Swemcoperlaan 13, Berkel, Z.H. Holland. et Revetments, 45 Avenue du Roule, Neuilly, Seine. France des Travaux Publics, 169 Rue de Flandre. Brussels, Belgium 1968 INDEXES. No annual index Is published but technical articles offull page length or over, appearing In Insulation are indexed in British Technology Index. 11<; -- SEPTEMBER 1968 For' lurtlaer i.formatw. ple,.8e 8ee form at "adc, 4uoti." Hef. No. 179 LDR/R152 179 technical literature are available from HVRA, Old BrackneU Lane, Bracknell, Berks at I5/3d. and 1O/6d. Thermal Insulation Thermal fnsulation edited by S. D. Probert of University College, Swansea, and D. R. Hub of University College, Cardiff has recently been published by Elsevier. Among the contributors of articles to this book are Prof. T. A. Markus of Strathclyde and J. Lawrie of the Structural Insulation Association. The book contains nine chapters, each written by a specialist in one or other of the fields of insulation. The variety of subjects covered can be seen by a cursory glance at the chapter headings: "Superinsulation in Cryogenic Engineering" "Thermal Insulation using Multiple Glazing", "Design of Walls for Intermittent Furnaces using High Temperature Insulation". Thermal Insulation contains I31 pp, 62 illustrations and 14 tables. It is available price 65s from Elsevier Publishing Co. Ltd., 22 Rippleside Commercial Estate, Barking, Essex. Publications index The CIRIA Index of Technical Publications, an authoritative guide to official and semi-official publications produced for the construction industry is designed to provide quick reference to current technical literature, excluding periodicals, for architects, builders, civil engineers and surveyors, for whommrprisingly-no such guide previously existed. In its first edition, the ClRIA Index covers ['550 publications Iisted by subject alphabetically. Publications on highway and traffic engineering have not been included, but will be incorporated in later enlarged editions, which will also cover industrial and commercial sources. This publication accords with CIRIA's policy of improving the flow f':.1uid effectiveness of construction in. formation. Copies are available at 108 each (Ss to CIRIA members) from the Construction Industry Research and Information Association, 6, Storey's Gate, London S.W.l. if, Cellular plastics -,-----_... _--" A NEW DIGEST from the Building Research Station is entitled Cellular plastics for Building: 1, digest 93. This digest deals with expanded polystyrene and its suitability as a building material. It covers the properties of --.-.., .. ~.--- ..,~- the m;:nerial, its use in roof. floor and wall insulation and other functions ~llch as its lIse in acoustic tiles and in plumbing. Digest 94 will cover other types of cellular plastics and will include a short section on their use in sandwich panels and laminates. These two digests supersede Digest 39 (second series), which has now been withdrawn. These digests a',e published by Her Majesty's Statkmery Office, and cost 4d. each. Overheating A SURVEY WAS UNDERTAKE:'; in 1964 to determine the extent of summer overheating in naturally ventilated offices of modern construction, by the HVRA. The physical factors relating to thermal comfort were measured in a number of offices and the occupants' reactions assessed from established data on thermal sensations in warm environments. Evidence of overheating in east, south and west-facing rooms was found. Even with venetian blinds in use, there were frequent and prolonged periods of uncomfortable warmth in rooms where the glazing exceeded 40 per cent of the external wall area or the glass/ftoor area ratio exceeded 0.25. These spells were found to occur on over half the days in summer and they lasted, on average, more than three hours. The overheating was worse as the glass area increased. To alleviate such conditions, mechanical cooling seems essential. The survey was repeated in 1965 when the weather was cooler and less sunny. Two of the buildings were studied f~r a period of nine weeks. It was found that the thermal conditions in the offices could not be fully explained in terms of the physical parameters of the rooms. The occupants' use of open windows and blinds were significant and this led to marked differences in environment between similar rooms. But when it is remembered that a 2 or 3 per cent improvement of output (or the prevention of a similar fall) will justify the provision of air conditioning, then we may conclude that in buildings fully exposed to sunshine, and with a high proportion (>40 per cent) of the external wall glazed, air conditioning is likely to be an essential service, not merely a luxury. Copies of the reports 31 and 34, A survey of the thermal environment in naturally ventilated offices in summer, Double glazing claims in perspective A NEW CODE of practice controllilll! claims which double glazing manu'. facturers make about their products. has been issued to its members by till' Insulation Glazing Association. The code shows precise insulation values of units with variou, airspaces and ill different exposures, considers claim, for fuel savings and increased comfort and gives examples of the SOl/nd insulation provided by various type. of sealed or fi.xed windows. Cia I!l\ about condensation reduction and the effect of double glazmg in summer ,[re also put in perspective. The publication tided 'Claims lduc/r can reasonably be made for dOllh/, glazing' is available from Insulation Glazing Association, 6 Mount Row. London, W.I. Asbestos and health Hygiene Standards/or Chrysoti/e A.I/>' . !Os Dust from thl;: committee " Hygiene Standards of the Bri[h;' Occupational Hygiene Society jJ.i. recently been published by Perganwl, Press. The committee recognizes that th<:r, is some small risk to health \\ 'll" working in an en' ironment \\ Ill. contains airborne chj'ysotile dust .J makes recommendations on minil" ing the risk. The standards together \\ irh pendices are available in a 28 pp boC', let from Pergamon Press, Headingk Hall, Oxford. Preventing condensation BRS DIGEST 91 (Second Series) ell titled Prevention of Condensation, pu 1lished in March, shows how the f1' of condensation mav be assessed the design of building details. 1 illustrate this it combines a graphic., treatment with worked examples. Th, design data are presented in both imperial and metric forms. This Digest should be read in conjunction with Digests 23, 117 and 132 (First Series). All BRS Digests are obtainable from H.M.S.O. pric~ 4d. each. continued on pal. 169 206 INSULATlO:~ . '. an wi m( Adl FIV the; fron It TI ..[i;;,desi! ':;'~( idng I'ili'Desi Epo; ''lli.:\;&: 'i,.;:and j: ,~:uses , ~:CUsse( iThe . : descri :~applic 1'ifullv i " The <:the re; ~i.for eat :"1ndusr :!iitl Th e~ :iff!POlI1 t ( 'jimmen :~ainee .' InJo