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new from bre

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bre has published a two-part Good Repair Guide on attack by wood- boring insects, dealing with the range of insects which can cause damage and even structural weakening. It does not include the termites which recently hit the headlines, but deals with the common furniture beetle, house longhorn beetle, death watch beetle, Lyctus powderpost beetle, wood- boring weevil and Ptilinus beetle. Part 1 deals with the identification and assessment of damage, and Part 2 with treating it.

Lightning strikes may seem entirely unpredictable, but in fact there is a British Standard (bs 6651) which provides a method for calculating the likelihood of a strike. This uses weighting factors based on the use of the structure, the type of construction, the contents or consequential effects, degree of isolation and type of country. An 'acceptable' risk factor is defined as 1 in 100,000 per year. bre's Digest 428, Protecting Buildings against Lightning, outlines these risk factors and the method of calculation, and then goes on to describe how to design a lightning protection system.

The latest information paper, ip6/98, deals with the implications of a proposed new ec Regulation on the use of refrigerants. This would ban the continued use of cfcs for maintaining existing refrigeration systems and the use of hcfcs in new systems. The paper looks at the options for replacing cfcs and hcfcs in building air-conditioning systems, and reports recent findings of work to investigate the performance of systems converted to an alternative refrigerant.

Wood-boring Insect Attack Parts 1 and 2 costs £7.00, Protecting Buildings against Lightning costs £4.50 and Performance of Air-conditioning Systems with Alternative Refrigerants, by D J G Butler, costs £3.50. All publications are available from crc, 151 Rosebery Avenue, London EC1R 4QX, tel: 0171 505 6622.

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