vertical chases) • doors to hallways shall be gasketed or made air tight. where the registered design professional demonstrates that an engineered ventilation system design will prevent the maximum concentration of contaminants from exceeding that obtainable by the rate of outdoor air ventilation determined...
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conditioning (hvac) and refrigeration equipment metal pipework, valves and containers security equipment hardware, ironmongery, cutlery and tools timber, wooden products, machinery and equipment for the woodworking industry building industry civil engineering and building machinery and equipment civil...