This. I don't understand where all the confusion is coming from.retired1 wrote:That rule does not need clarification. It plainly states that NO portion can extend below the blocks that it sets on. No means nothing or zero portion of the structure.
1. At start, no part of the bridge may be below the test supports.
2. During testing, the bridge is allowed to extend under the test supports.
3. If, during testing, any part of the bridge touches the test base, this is counted as failure and loading must not continue.
Quite simple really.