Does the steel have adequate Charpy V notch fracture toughness.

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Chapter 3, Problem 3.46QP

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Does the steel have adequate Charpy V notch fracture toughness.

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A Charpy V notch test was conducted for an ASTM A572 Grade 50 bridge steel. The average values of the test results at four different test temperatures were found to be: 10 ft.lb at -50 degrees F 15 ft.lb at 0 degrees F 40 ft.lb at 40 degrees F 50 ft.lb at 100 degrees F The bridge will be located in a region where specifications require a minimum of 25 ft.lb fracture toughness at 30 degree F for welded fracture-critical members. If the bridge contains a welded flange in a fracture-critical member, does the steel have adequate Charpy V notch fracture toughness? Show your supporting Calculations. Only attempt when you are sure ,else skip for others , otherwise I will downvote for wrong answers

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