In multiple strand tensioning, strand-splice must be used for what scenarios?

In multiple strand tensioning, the use of strand splices is crucial for ensuring structural integrity and effective load distribution across the cables or strands being tensioned. This technique is commonly applied in scenarios where the strands must be tensioned together to achieve uniform distribution of force and maintain the overall stability of the structure.

When the answer states "All or None," it captures the principle that strand splices are necessary in scenarios where every strand is engaged in the tensioning process. This means that either all strands need to be tensioned together with proper splicing or none should be, to avoid causing imbalances or weaknesses that could lead to failure. This approach emphasizes the need for comprehensive engagement in tensioning, ensuring that the system works as a unified whole.

In contrast, choices suggesting a select few or variations imply that splicing might not be essential for all strands, which does not align with best practices in structural engineering principles aimed at maintaining the integrity and performance of the entire system. Having an "All or None" requirement is a safeguard measure that helps mitigate risks associated with uneven load distribution during tensioning.