What is the acceptable relative bearing strength for thick sand, measured in psf?

The acceptable relative bearing strength for thick sand is 6,000 psf. This value is critical for determining the load-supporting capacity of the soil when planning and designing structures. Understanding the bearing strength is paramount because it influences foundation design and ensures that structures remain stable under load.

Thick sand typically has a relatively high bearing capacity, but it is important to recognize that this value can fluctuate based on factors like moisture content, density, and compaction level. The value of 6,000 psf signifies a sufficiently safe margin for most residential and commercial construction when dealing with thick sand conditions, making it a standard reference point in engineering and construction practices.

Higher values, such as 9,000 psf or 12,000 psf, while they may be applicable in some situations, are not generally associated with thick sand and can lead to overly conservative designs, increasing costs unnecessarily. Therefore, 6,000 psf is the most appropriate choice in this context.