At what location should joints in deck beams ideally occur?

The ideal location for joints in deck beams is over a support because this positioning allows for better load distribution and structural integrity. When a joint is placed over a support, it helps to minimize the bending moments that the beam experiences. This is crucial for maintaining the strength and stability of the deck. If the joint were to occur in the middle of the beam or at the end, it could lead to weaknesses where the tension and compression forces are not optimally supported, potentially leading to structural failures. Random placement of joints can create unpredictable stress concentrations, further compromising the performance and safety of the structure. Thus, positioning joints directly above a support maximizes the beam's load-bearing capacity.