... diagonal bracing covered in this guide. The au-thors recommend the use of a factor of safety of 3 forASD and the use of = 0.5 for LRFD. The CaltransFalsework Manual uses a factor of safety of 2.0 ... thereof must not be reproduced in any form without permission of the publisher.3 080 x0.3x0.7 = 647 .8 sq. ft.The total frame area, Af, isAf = 437.3+ 646 .8 =1 084 sq.ft.F at the level of the ... psiNominalDiameterinches3 /8 7/161/29/165 /8 3/47 /8 1ApproximateWeightlbs./ft.0.220.300.390.500.610 .88 1.201.57ApproximateMetallicAreain.20.0510.0700.0920.1160.1430.2060. 280 0.366NominalBreakingStrength1lbs.10, 480 14, 180 18, 46023,200 28, 60041,00055,40072,0006x7 Classification/Bright (Uncoated),Fiber Core, Improved Plow Steel, E = 13,000,000 psiNominalDiameterinches3 /8 7/161/29/165 /8 3/47 /8 1ApproximateWeightlbs/ft.0.210.290. 38 0. 48 0.590 .84 1.151.50ApproximateMetallicAreain.20.0540.0740.0960.1220.1500.2160.2940. 384 NominalBreakingStrength1lbs.11,72015 ,86 020,60026,00031 ,80 045,40061,40079,4006x37...