What is the acceptable California Bearing Ratio for installing the lightweight fairlead beam?

The acceptable California Bearing Ratio (CBR) for installing the lightweight fairlead beam is 7. This value indicates the strength and load-bearing capacity of the soil or foundation material where the fairlead beam will be installed. A CBR of 7 ensures that the substrate can adequately support the structural loads imposed by the beam and any associated equipment or forces that may act on it.

In engineering and construction practice, a CBR value is critical for determining whether the ground conditions are suitable for the installation of various structures. A CBR value above 7 typically signifies good soil strength and stability, thus providing reassurance that the installation will be secure and reliable over time. Lower values might suggest potential for inadequate support, leading to structural issues or failures, which is why values like 5 or 6 would not be acceptable.

Values of 8 might indicate overly strong conditions, but the specific requirement here is set at 7, aligning with standard practices and ensuring the balance between safety and material use efficiency.