Final answer:
When the axles are closer together, the maximum allowable axle weight is reduced to prevent stress and potential damage to the structure.
Step-by-step explanation:
In the realm of bridge engineering, the bridge formula serves as a mathematical tool crucial for determining the maximum permissible axle weight on a bridge.
This formula is designed to consider specific factors such as the number of axles, the spacing between these axles, and the overall span length of the bridge.
As per the principles of the bridge formula, a key determinant of the maximum allowable axle weight is the proximity of the axles.
In instances where the axles are situated in close proximity, the formula prescribes a reduction in the permissible axle weight.
The rationale behind this is rooted in the fact that closer axles lead to a more concentrated load on the bridge, potentially escalating stress levels and posing a risk of structural damage.
Therefore, the bridge formula plays a pivotal role in regulating axle weights to ensure the structural integrity and safety of bridges under various loading conditions.