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7.9 Calculation of Critical Fall Height – EN1177 Method
For critical fall height (CFH) calculation using linear regression analysis (i.e. as per EN1177) four
drop tests must be performed, changing the drop height to result in increasing HIC values. The
drops are uploaded as described in section 7.2, and selected by clicking on each of the four drops
while holding the CTRL key.
From the Report drop down menu click Calculate Critical Height to view and print the CFH graph
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