Here are the revised numbers obtained in our prior publications. TL-3 Iowa original F-shape concrete barrier - 1.15 m or 45.3 in. Simulated F-shape at 85th percentile conditions - approx. 24 in. Iowa F-shape with tie-down straps - 850 mm at top (33.5 in.) - barrier placed approx. 12 in. from deck edge - recommended that distance could be reduced to 6 in. Kansas/Iowa F-shape concrete barrier with 3 anchor bolts - 287 mm at top (11.3 in.) - barriers placed approx. 1 in. from deck edge TL-3 Plus (Heavier truck) Iowa/Kansas F-shape concrete barrier - approx. 57 in. (p.s. deflection) - more exact analysis still pending
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