10 years ago using the BS EN 10256-3 (British Standard) guidelines CGL created the industry standard gutter design software GDT which allowed users to perform roof drainage calculations utilising gravity fed outlets.
Following on from the success of the GDT gutter design software, GDT2 was developed to use the rainwater data contained within BS EN 10256-3. This software gives the user the ability to calculate their own roof drainage solutions using the Rainpulse rainwater management system.
calculations with GDT2
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register with GDT2