PROFILE 3 (SLW & ULTIMATE).pdf - Emenite Limited

SOLUTION FOR SUPERLIGHTWEIGHT®NR = RAL /ELSWhere RAL = rafter length including eavesRAL = 1.04 × TP (at 15° slope)= 1.04 × (12000mm + 1200mm) /2 = 6900mm (refer to fig 4.2 & table 4.1on pages 20 and 21 respectively)ELS = Effective length of sheet= 1800mm - 150mm = 1650mmNR = RAL /ELS = 6900mm / 1650mm = 4 rowsNF = LR/EWSwhere LR = length of roof including eaves= 18000mm + 1200mm = 19200mmEWS = Effective width of sheets= 1050mm - 75mm = 975mmNF = 19200mm / 975mm = 20 flesNS = NR × NF= 4 rows × 20 files = 80 sheets × 1.05 (5% for all sundry allowances)= 84sheets (for one span)For two spans as we have in the example= 84 sheets × 2 = 168 sheets34®PROFILE 3 MANUAL