I got the question below about transitions between existing 27 inch high w-beam barriers and repairs made using 31 inch high versions. The specific question below also asks about using a 27 inch high terminal when the owner wants to use it to terminate a new 31 inch high LON barrier.1) Based on your MGS research and your vast experience with 27 inch high barriers, is there an appropriate transition length over which you may "safely" raise or lower w-beam rail by 3 inches? 1a) Assume all other features are equal. 1b) Assume known differences like G4-1(S) transitioning to MGS or vice-versa.2) If an owner thinks they can save money by specifying a 27-inch high w-beam terminal when using 31 inch high barriers, what is the "safe" place to begin the 3-inch rise?These questions assume the owner is basically satisfied with the performance of 27-inch high barriers and or terminals but wants to begin moving to 31 inch systems whenever possible. If these are questions that should not be trifled with unless crash tested, that, too, is an answer.
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