AS 2309-2008 pdf free download

AS 2309-2008 pdf free download.Durability of galvanized and electrogalvanized zinc coatings for the protection of steel in structural applications Atmospheric.
Caiegorv C: Medium. This category mainly covers coastal areas with low salinity. The extent of the affected area varies significantly with factors such as winds, topography and vegetation. Around sheltered seas, such as Port Philip Bay. Category C extends beyond about 50 metres from the shoreline to a distance of about one kilometre inland. For a sheltered bay or gulf such as near Adelaide. this category extends from the shoreline to about 3 to 6 kilonietres inland. Along ocean front areas with breaking surf and significant salt spray, it extends from about I kilometre inland to between 10 to 50 kilometres inland. depending on the strength of prevailing winds and topography. Much of the metropolitan areas of Wollongong. Sydney, Newcastle, the Gold Coast. Auckland and Wellington are in this category. In South Australia. the whole of the Yorke peninsula falls within this or a more severe category, and in the south-east of the stale, from Victor Harbour to the Victorian border, this category extends between 30 and 70 kilometres inland. Such regions are also found in urban and industrial areas with low pollution levels and although uncommon in Australia and New Zealand. exist for several kilometres around major industries, such as smelters and steelworks. and in the geothermal areas of New Zealand.
Micro-environmental effects, such as result from proximity to airports and sewage treatment works, may also place a site into this category. Interior environments with Category C corrosivity can occur in humid production rooms, such as food-processing plants. laundries, breweries, printing works and dairies.
caiegorv D: High. This category occurs mainly on the coast. Around sheltered bays. Category D extends up to 50 metres inland from the shoreline. In areas with rough seas and surf, it extends from about several hundred metres inland to about one kilometre inland. As with Categories B and C, the extent depends on winds, wave action and topography. Industrial regions may also be in this category, but in Australia and New Zealand these are only likely tohe found within 1.5 kilornetres of the plant. This category extends inside the plant where it is best considered as a micro-environment. Damp. contaminated interior environments such as occur with swimming pools, the works, paper manufacturers, foundries, smelters and chemical processing plants ma also extend into this category.
categc;rv F: Very High. (E-l: industrial E-M: Marine) This category is common offshore and on the beachfront in regions of rough seas and surf beaches. The region can extend inland for several hundred metres. (In some areas of Newcastle. for example. it extends more than haIfa kilometre from the coast.) This category may also be found in aggressive industrial areas, where the environment may he acidic with a pH of less than 5. For this reason, Category E is divided into Marine and Industrial for purposes of coating selection. Some of the damp andlor contaminated interior environments in Category D may occasionally extend into this category.
C’alegory F: Inland Tropical.AS 2309-2008 pdf free download.