What is the safe bearing pressure of compacted and cemented sand?

The safe bearing pressure of compacted and cemented sand is generally established based on the material's ability to support loads without experiencing excessive settlement or failure. Compacted sand that has been stabilized with cement demonstrates enhanced strength and reduces the likelihood of shifting or compressive failure under load.

In this case, 10,000 psf is a reasonable estimate for the safe bearing pressure for well-compacted and cemented sand. This value reflects the ability of such material to support substantial loads typical for commercial pool construction, where the foundation needs to withstand both the weight of the structure and the dynamic loads resulting from water and activities in the pool area.

The other values may be representative of different materials or conditions. For example, a lower safe bearing capacity (like 5,000 psf or 8,000 psf) could apply to loose or poorly compacted sands, while a value around 12,000 psf might be relevant in highly specialized applications or under particularly favorable conditions that exceed common expectations.

Thus, 10,000 psf accurately conveys the safe bearing pressure for compacted and cemented sand in typical construction practices for commercial pools, aligning with engineering standards and safety guidelines.