Question 1982 Deck Safety

The correct answer is C) 100%. A welded joint's effectiveness is considered to be 100% when properly designed and executed. This is because the weld creates a continuous, seamless connection between the two pieces of metal, effectively transferring the full load or stress across the joint. The welded joint does not introduce any points of weakness or discontinuity, assuming the weld is of high quality and meets the necessary standards. The other options are incorrect because they do not accurately represent the full effectiveness of a properly welded joint. A 48% or 90% effectiveness would imply significant losses or weaknesses in the joint, which is not the case for a properly executed weld. A 121% effectiveness is also not possible, as it would suggest the welded joint is stronger than the base material, which is not a realistic scenario.