This Bulletin on preventing dampness in houses covers some aspects that builders and subtrades may occasionally
be required to deal with . It is, however, also intended for general guidance to householders.

Providing safe storage for documents and documentary records within new and existing buildings is a problem faced by many building designers and owners/managers. This Bulletin sets out the common causes of damage and the specific storage criteria for commonly used documents and documentary records, as well as outlining methods to satisfy these criteria.      

This paper gives guidance on assessing the risk of surface condensation and mould growth at thermal bridges around openings in the external elements of buildings, and describes a method of assessing their effect on overall heat loss. It supports the 1995 revision of the Building Regulations for conservation of fuel and power.

The sensory pollution load and microbial contamination of glass-fibre filters at high and low relative humidity were investigated in an experimental set-up in the laboratory. Dust and particles from the outdoor air were collected in two EU7 glass-fibre filters for a pre-conditioning period of 16-18 weeks during which there was a constant airflow with a velocity of 1.9 m/s through the filters. One of the filters was exposed to outdoor air of approximately 40% relative humidity and 10°C, the other to outdoor air of approximately 80% relative humidity and S0 C.

Fans and their associated ventilation ducts are amongst the major sources of airborne noise encountered within a submarine. Health & Safety Standards require that the ship's crew are not exposed to unnecessary high levels of noise and have a suitable environment free from intrusive noise in order to work and rest. The problem with noise emitted from fans and ducts in submarines can be categorised as follows:

An ASHRAE special publication can help designers minimize the number and severity of HVAC system noise and vibration problems.

Is fighting sound with sound the future for noise control? James Macneil hears how active noise technology is slowly being fine-tuned for commercial use.

Designing for grille and diffuser noise is of paramount importance. Neil Jarman looks at the data currently provided by manufacturers and provides some design tips.