Posi™-Calculator Project Type Select Project Type Floor Roof Flat roof Configuration Select Option Domestic Floor Domestic Floor – Heavy Light Office Heavy Office Domestic Flats Office Separating Communal Heavy Flat Roof – Light Flat Roof – Medium Flat Roof – Heavy Light at 10° Pitch Medium at 10° Pitch Heavy at 10° Pitch Light at 20° Pitch Medium at 20° Pitch Heavy at 20° Pitch Light at 30° Pitch Medium at 30° Pitch Heavy at 30° Pitch Domestic Floor Domestic Floor – Heavy Light Office Heavy Office Domestic Flats Office Separating Communal Heavy Flat Roof – Light Flat Roof – Medium Flat Roof – Heavy Light at 10° Pitch Medium at 10° Pitch Heavy at 10° Pitch Light at 20° Pitch Medium at 20° Pitch Heavy at 20° Pitch Light at 30° Pitch Medium at 30° Pitch Heavy at 30° Pitch Load Details Floor Dead: kN/m2 Roof Dead: kN/m2 Ceiling Dead: kN/m2 Floor Imposed: kN/m2 Partition: kN/m2 Snow: kN/m2 Span (mm) Maximum Height (mm) Results