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Cheung, S, Lam, K, Wong, S S and Wong S K (2001) The fee sensitive risk exposures of project authorized person in Hong Kong. Construction Economics and Building, 1(02), 65-72.

Jeary, A and Jeary, I (2001) The influence of flooding risk on infrastructure development in western Sydney. Construction Economics and Building, 1(02), 57-64.

Najjir, G, Love, P and Runeson, G (2001) Issues for the global construction market. Construction Economics and Building, 1(02), 73-81.

Nimcharoenwon, P and Miller, G (2001) Combating the 'sick building syndrome' by improving indoor air quality. Construction Economics and Building, 1(02), 82-89.

  • Type: Journal Article
  • Keywords: Sick building syndrome, indoor air quality; negative ions
  • ISBN/ISSN: 1445-2634
  • URL: https://doi.org/10.5130/AJCEB.v1i2.2879
  • Abstract:
    Research indicates that many of symptoms attributed to the Sick Building Syndrome in air-conditioned office buildings are a result of considerably reduced negative ions in the internal atmosphere and that replacing the depleted negative ions can improve indoor air quality. This paper describes a method used to develop a formula (DOF-NIL formula) for calculating the amount of negative ions to be added to air-conditioned buildings, to improve air quality. The formula enables estimates to be made based on how negative ions in the air are reduced by three main factors namely, Video Display Terminals (VDT); heating, ventilation and air conditioning (HVAC) and Building Contents (BC). Calculations for a typical air-conditioned office, are compared with an Air Ion Counter instrument. The results show that the formula, when applied to a typical air-conditioned office, provides an accurate estimate for design purposes. The typical rate of additional negative-ions (ion-generating) for a negative ion condition is found to be approximately 12.0 billion ions/hr for at least 4 hour ion-generating.

Saha, S, greville, C and Mullins, T (2001) Optimisation of construction process inspection rates using a learning approach. Construction Economics and Building, 1(02), 1-13.

Smallwood, J and Venter, D (2001) The role of the media in South African construction health and safety. Construction Economics and Building, 1(02), 37-46.

Stewart, P (2001) The role of e-commerce systems for the construction industry. Construction Economics and Building, 1(02), 24-36.

Teo, A and Runeson, G (2001) Aspects of market differentiation in the building industry. Construction Economics and Building, 1(02), 14-23.

Wilkinson, S (2001) An analysis of the use of information technology for project management in the New Zealand construction industry. Construction Economics and Building, 1(02), 47-56.